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Theorem List for Metamath Proof Explorer - 45701-45800   *Has distinct variable group(s)
TypeLabelDescription
Statement
 
TheoremeelT0 45701 An elimination deduction. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
(⊤ → 𝜑)    &   𝜓    &   ((𝜑 ∧ 𝜓) → 𝜒)    ⇒   𝜒
 
Theoreme0bi 45702 Elimination rule identical to mpbi 233. The non-virtual deduction form is the virtual deduction form, which is mpbi 233. (Contributed by Alan Sare, 15-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
𝜑    &   (𝜑 ↔ 𝜓)    ⇒   𝜓
 
Theoreme0bir 45703 Elimination rule identical to mpbir 234. The non-virtual deduction form is the virtual deduction form, which is mpbir 234. (Contributed by Alan Sare, 15-Jun-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
𝜑    &   (𝜓 ↔ 𝜑)    ⇒   𝜓
 
Theoremuun0.1 45704 Convention notation form of un0.1 45705. (Contributed by Alan Sare, 23-Apr-2015.) (Proof modification is discouraged.) (New usage is discouraged.)
(⊤ → 𝜑)    &   (𝜓 → 𝜒)    &   ((⊤ ∧ 𝜓) → 𝜃)    ⇒   (𝜓 → 𝜃)
 
Theoremun0.1 45705 ⊤ is the constant true, a tautology (see df-tru 1573). Kleene's "empty conjunction" is logically equivalent to ⊤. In a virtual deduction we shall interpret ⊤ to be the empty wff or the empty collection of virtual hypotheses. ⊤ in a virtual deduction translated into conventional notation we shall interpret to be Kleene's empty conjunction. If 𝜃 is true given the empty collection of virtual hypotheses and another collection of virtual hypotheses, then it is true given only the other collection of virtual hypotheses. (Contributed by Alan Sare, 23-Apr-2015.) (Proof modification is discouraged.) (New usage is discouraged.)
(   ⊤   ▶   𝜑   )    &   (   𝜓   ▶   𝜒   )    &   (   (   ⊤   ,   𝜓   )   ▶   𝜃   )    ⇒   (   𝜓   ▶   𝜃   )
 
TheoremuunT1 45706 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 3-Dec-2015.) Proof was revised to accommodate a possible future version of df-tru 1573. (Revised by David A. Wheeler, 8-May-2019.) (Proof modification is discouraged.) (New usage is discouraged.)
((⊤ ∧ 𝜑) → 𝜓)    ⇒   (𝜑 → 𝜓)
 
TheoremuunT1p1 45707 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝜑 ∧ ⊤) → 𝜓)    ⇒   (𝜑 → 𝜓)
 
TheoremuunT21 45708 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 3-Dec-2015.) (Proof modification is discouraged.) (New usage is discouraged.) (Proof modification is discouraged.) (New usage is discouraged.)
((⊤ ∧ (𝜑 ∧ 𝜓)) → 𝜒)    ⇒   ((𝜑 ∧ 𝜓) → 𝜒)
 
Theoremuun121 45709 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝜑 ∧ (𝜑 ∧ 𝜓)) → 𝜒)    ⇒   ((𝜑 ∧ 𝜓) → 𝜒)
 
Theoremuun121p1 45710 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
(((𝜑 ∧ 𝜓) ∧ 𝜑) → 𝜒)    ⇒   ((𝜑 ∧ 𝜓) → 𝜒)
 
Theoremuun132 45711 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝜑 ∧ (𝜓 ∧ 𝜒)) → 𝜃)    ⇒   ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃)
 
Theoremuun132p1 45712 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
(((𝜓 ∧ 𝜒) ∧ 𝜑) → 𝜃)    ⇒   ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃)
 
Theoremanabss7p1 45713 A deduction unionizing a non-unionized collection of virtual hypotheses. This would have been named uun221 if the zeroth permutation did not exist in set.mm as anabss7 686. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
(((𝜓 ∧ 𝜑) ∧ 𝜑) → 𝜒)    ⇒   ((𝜓 ∧ 𝜑) → 𝜒)
 
Theoremun10 45714 A unionizing deduction. (Contributed by Alan Sare, 28-Apr-2015.) (Proof modification is discouraged.) (New usage is discouraged.)
(   (   𝜑   ,   ⊤   )   ▶   𝜓   )    ⇒   (   𝜑   ▶   𝜓   )
 
Theoremun01 45715 A unionizing deduction. (Contributed by Alan Sare, 28-Apr-2015.) (Proof modification is discouraged.) (New usage is discouraged.)
(   (   ⊤   ,   𝜑   )   ▶   𝜓   )    ⇒   (   𝜑   ▶   𝜓   )
 
Theoremun2122 45716 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 3-Dec-2015.) (Proof modification is discouraged.) (New usage is discouraged.)
(((𝜑 ∧ 𝜓) ∧ 𝜓 ∧ 𝜓) → 𝜒)    ⇒   ((𝜑 ∧ 𝜓) → 𝜒)
 
Theoremuun2131 45717 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
(((𝜑 ∧ 𝜓) ∧ (𝜑 ∧ 𝜒)) → 𝜃)    ⇒   ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃)
 
Theoremuun2131p1 45718 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
(((𝜑 ∧ 𝜒) ∧ (𝜑 ∧ 𝜓)) → 𝜃)    ⇒   ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃)
 
TheoremuunTT1 45719 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
((⊤ ∧ ⊤ ∧ 𝜑) → 𝜓)    ⇒   (𝜑 → 𝜓)
 
TheoremuunTT1p1 45720 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
((⊤ ∧ 𝜑 ∧ ⊤) → 𝜓)    ⇒   (𝜑 → 𝜓)
 
TheoremuunTT1p2 45721 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝜑 ∧ ⊤ ∧ ⊤) → 𝜓)    ⇒   (𝜑 → 𝜓)
 
TheoremuunT11 45722 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
((⊤ ∧ 𝜑 ∧ 𝜑) → 𝜓)    ⇒   (𝜑 → 𝜓)
 
TheoremuunT11p1 45723 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝜑 ∧ ⊤ ∧ 𝜑) → 𝜓)    ⇒   (𝜑 → 𝜓)
 
TheoremuunT11p2 45724 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝜑 ∧ 𝜑 ∧ ⊤) → 𝜓)    ⇒   (𝜑 → 𝜓)
 
TheoremuunT12 45725 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
((⊤ ∧ 𝜑 ∧ 𝜓) → 𝜒)    ⇒   ((𝜑 ∧ 𝜓) → 𝜒)
 
TheoremuunT12p1 45726 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
((⊤ ∧ 𝜓 ∧ 𝜑) → 𝜒)    ⇒   ((𝜑 ∧ 𝜓) → 𝜒)
 
TheoremuunT12p2 45727 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝜑 ∧ ⊤ ∧ 𝜓) → 𝜒)    ⇒   ((𝜑 ∧ 𝜓) → 𝜒)
 
TheoremuunT12p3 45728 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝜓 ∧ ⊤ ∧ 𝜑) → 𝜒)    ⇒   ((𝜑 ∧ 𝜓) → 𝜒)
 
TheoremuunT12p4 45729 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝜑 ∧ 𝜓 ∧ ⊤) → 𝜒)    ⇒   ((𝜑 ∧ 𝜓) → 𝜒)
 
TheoremuunT12p5 45730 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝜓 ∧ 𝜑 ∧ ⊤) → 𝜒)    ⇒   ((𝜑 ∧ 𝜓) → 𝜒)
 
Theoremuun111 45731 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝜑 ∧ 𝜑 ∧ 𝜑) → 𝜓)    ⇒   (𝜑 → 𝜓)
 
Theorem3anidm12p1 45732 A deduction unionizing a non-unionized collection of virtual hypotheses. 3anidm12 1446 denotes the deduction which would have been named uun112 if it did not pre-exist in set.mm. This second permutation's name is based on this pre-existing name. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝜑 ∧ 𝜓 ∧ 𝜑) → 𝜒)    ⇒   ((𝜑 ∧ 𝜓) → 𝜒)
 
Theorem3anidm12p2 45733 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝜓 ∧ 𝜑 ∧ 𝜑) → 𝜒)    ⇒   ((𝜑 ∧ 𝜓) → 𝜒)
 
Theoremuun123 45734 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝜑 ∧ 𝜒 ∧ 𝜓) → 𝜃)    ⇒   ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃)
 
Theoremuun123p1 45735 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝜓 ∧ 𝜑 ∧ 𝜒) → 𝜃)    ⇒   ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃)
 
Theoremuun123p2 45736 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝜒 ∧ 𝜑 ∧ 𝜓) → 𝜃)    ⇒   ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃)
 
Theoremuun123p3 45737 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝜓 ∧ 𝜒 ∧ 𝜑) → 𝜃)    ⇒   ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃)
 
Theoremuun123p4 45738 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝜒 ∧ 𝜓 ∧ 𝜑) → 𝜃)    ⇒   ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃)
 
Theoremuun2221 45739 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 30-Dec-2016.) (Proof modification is discouraged.) (New usage is discouraged.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝜑 ∧ 𝜑 ∧ (𝜓 ∧ 𝜑)) → 𝜒)    ⇒   ((𝜓 ∧ 𝜑) → 𝜒)
 
Theoremuun2221p1 45740 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝜑 ∧ (𝜓 ∧ 𝜑) ∧ 𝜑) → 𝜒)    ⇒   ((𝜓 ∧ 𝜑) → 𝜒)
 
Theoremuun2221p2 45741 A deduction unionizing a non-unionized collection of virtual hypotheses. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
(((𝜓 ∧ 𝜑) ∧ 𝜑 ∧ 𝜑) → 𝜒)    ⇒   ((𝜓 ∧ 𝜑) → 𝜒)
 
Theorem3impdirp1 45742 A deduction unionizing a non-unionized collection of virtual hypotheses. Commuted version of 3impdir 1370. (Contributed by Alan Sare, 4-Feb-2017.) (Proof modification is discouraged.) (New usage is discouraged.)
(((𝜒 ∧ 𝜓) ∧ (𝜑 ∧ 𝜓)) → 𝜃)    ⇒   ((𝜑 ∧ 𝜒 ∧ 𝜓) → 𝜃)
 
Theorem3impcombi 45743 A 1-hypothesis propositional calculus deduction. (Contributed by Alan Sare, 25-Sep-2017.)
((𝜑 ∧ 𝜓 ∧ 𝜑) → (𝜒 ↔ 𝜃))    ⇒   ((𝜓 ∧ 𝜑 ∧ 𝜒) → 𝜃)
 
21.43.6  Theorems proved using Virtual Deduction
 
TheoremtrsspwALT 45744 Virtual deduction proof of the left-to-right implication of dftr4 5217. A transitive class is a subset of its power class. This proof corresponds to the virtual deduction proof of dftr4 5217 without accumulating results. (Contributed by Alan Sare, 29-Apr-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
(Tr 𝐴 → 𝐴 ⊆ 𝒫 𝐴)
 
TheoremtrsspwALT2 45745 Virtual deduction proof of trsspwALT 45744. This proof is the same as the proof of trsspwALT 45744 except each virtual deduction symbol is replaced by its non-virtual deduction symbol equivalent. A transitive class is a subset of its power class. (Contributed by Alan Sare, 23-Jul-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
(Tr 𝐴 → 𝐴 ⊆ 𝒫 𝐴)
 
TheoremtrsspwALT3 45746 Short predicate calculus proof of the left-to-right implication of dftr4 5217. A transitive class is a subset of its power class. This proof was constructed by applying Metamath's minimize command to the proof of trsspwALT2 45745, which is the virtual deduction proof trsspwALT 45744 without virtual deductions. (Contributed by Alan Sare, 30-Apr-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
(Tr 𝐴 → 𝐴 ⊆ 𝒫 𝐴)
 
Theoremsspwtr 45747 Virtual deduction proof of the right-to-left implication of dftr4 5217. A class which is a subclass of its power class is transitive. This proof corresponds to the virtual deduction proof of sspwtr 45747 without accumulating results. (Contributed by Alan Sare, 2-May-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
(𝐴 ⊆ 𝒫 𝐴 → Tr 𝐴)
 
TheoremsspwtrALT 45748 Virtual deduction proof of sspwtr 45747. This proof is the same as the proof of sspwtr 45747 except each virtual deduction symbol is replaced by its non-virtual deduction symbol equivalent. A class which is a subclass of its power class is transitive. (Contributed by Alan Sare, 3-May-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
(𝐴 ⊆ 𝒫 𝐴 → Tr 𝐴)
 
TheoremsspwtrALT2 45749 Short predicate calculus proof of the right-to-left implication of dftr4 5217. A class which is a subclass of its power class is transitive. This proof was constructed by applying Metamath's minimize command to the proof of sspwtrALT 45748, which is the virtual deduction proof sspwtr 45747 without virtual deductions. (Contributed by Alan Sare, 3-May-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
(𝐴 ⊆ 𝒫 𝐴 → Tr 𝐴)
 
TheorempwtrVD 45750 Virtual deduction proof of pwtr 5419; see pwtrrVD 45751 for the converse. (Contributed by Alan Sare, 25-Aug-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
(Tr 𝐴 → Tr 𝒫 𝐴)
 
TheorempwtrrVD 45751 Virtual deduction proof of pwtr 5419; see pwtrVD 45750 for the converse. (Contributed by Alan Sare, 25-Aug-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
𝐴 ∈ V    ⇒   (Tr 𝒫 𝐴 → Tr 𝐴)
 
TheoremsuctrALT 45752 The successor of a transitive class is transitive. The proof of https://us.metamath.org/other/completeusersproof/suctrvd.html is a Virtual Deduction proof verified by automatically transforming it into the Metamath proof of suctrALT 45752 using completeusersproof, which is verified by the Metamath program. The proof of https://us.metamath.org/other/completeusersproof/suctrro.html 45752 is a form of the completed proof which preserves the Virtual Deduction proof's step numbers and their ordering. See suctr 6440 for the original proof. (Contributed by Alan Sare, 11-Apr-2009.) (Revised by Alan Sare, 12-Jun-2018.) (Proof modification is discouraged.) (New usage is discouraged.)
(Tr 𝐴 → Tr suc 𝐴)
 
TheoremsnssiALTVD 45753 Virtual deduction proof of snssiALT 45754. (Contributed by Alan Sare, 11-Sep-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
(𝐴 ∈ 𝐵 → {𝐴} ⊆ 𝐵)
 
TheoremsnssiALT 45754 If a class is an element of another class, then its singleton is a subclass of that other class. Alternate proof of snssi 4745. This theorem was automatically generated from snssiALTVD 45753 using a translation program. (Contributed by Alan Sare, 11-Sep-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
(𝐴 ∈ 𝐵 → {𝐴} ⊆ 𝐵)
 
TheoremsnsslVD 45755 Virtual deduction proof of snssl 45756. (Contributed by Alan Sare, 25-Aug-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
𝐴 ∈ V    ⇒   ({𝐴} ⊆ 𝐵 → 𝐴 ∈ 𝐵)
 
Theoremsnssl 45756 If a singleton is a subclass of another class, then the singleton's element is an element of that other class. This theorem is the right-to-left implication of the biconditional snss 4744. The proof of this theorem was automatically generated from snsslVD 45755 using a tools command file, translateMWO.cmd, by translating the proof into its non-virtual deduction form and minimizing it. (Contributed by Alan Sare, 25-Aug-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
𝐴 ∈ V    ⇒   ({𝐴} ⊆ 𝐵 → 𝐴 ∈ 𝐵)
 
TheoremsnelpwrVD 45757 Virtual deduction proof of snelpwi 5411. (Contributed by Alan Sare, 25-Aug-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
(𝐴 ∈ 𝐵 → {𝐴} ∈ 𝒫 𝐵)
 
TheoremunipwrVD 45758 Virtual deduction proof of unipwr 45759. (Contributed by Alan Sare, 25-Aug-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
𝐴 ⊆ ∪ 𝒫 𝐴
 
Theoremunipwr 45759 A class is a subclass of the union of its power class. This theorem is the right-to-left subclass lemma of unipw 5417. The proof of this theorem was automatically generated from unipwrVD 45758 using a tools command file , translateMWO.cmd , by translating the proof into its non-virtual deduction form and minimizing it. (Contributed by Alan Sare, 25-Aug-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
𝐴 ⊆ ∪ 𝒫 𝐴
 
TheoremsstrALT2VD 45760 Virtual deduction proof of sstrALT2 45761. (Contributed by Alan Sare, 11-Sep-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝐴 ⊆ 𝐵 ∧ 𝐵 ⊆ 𝐶) → 𝐴 ⊆ 𝐶)
 
TheoremsstrALT2 45761 Virtual deduction proof of sstr 3938, transitivity of subclasses, Theorem 6 of [Suppes] p. 23. This theorem was automatically generated from sstrALT2VD 45760 using the command file translate_without_overwriting.cmd . It was not minimized because the automated minimization excluding duplicates generates a minimized proof which, although not directly containing any duplicates, indirectly contains a duplicate. That is, the trace back of the minimized proof contains a duplicate. This is undesirable because some step(s) of the minimized proof use the proven theorem. (Contributed by Alan Sare, 11-Sep-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝐴 ⊆ 𝐵 ∧ 𝐵 ⊆ 𝐶) → 𝐴 ⊆ 𝐶)
 
TheoremsuctrALT2VD 45762 Virtual deduction proof of suctrALT2 45763. (Contributed by Alan Sare, 11-Sep-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
(Tr 𝐴 → Tr suc 𝐴)
 
TheoremsuctrALT2 45763 Virtual deduction proof of suctr 6440. The successor of a transitive class is transitive. This proof was generated automatically from the virtual deduction proof suctrALT2VD 45762 using the tools command file translate_without_overwriting_minimize_excluding_duplicates.cmd . (Contributed by Alan Sare, 11-Sep-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
(Tr 𝐴 → Tr suc 𝐴)
 
Theoremelex2VD 45764* Virtual deduction proof of elex2 2837. (Contributed by Alan Sare, 25-Sep-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
(𝐴 ∈ 𝐵 → ∃𝑥 𝑥 ∈ 𝐵)
 
Theoremelex22VD 45765* Virtual deduction proof of elex22 3474. (Contributed by Alan Sare, 24-Oct-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝐴 ∈ 𝐵 ∧ 𝐴 ∈ 𝐶) → ∃𝑥(𝑥 ∈ 𝐵 ∧ 𝑥 ∈ 𝐶))
 
Theoremeqsbc2VD 45766* Virtual deduction proof of eqsbc2 3801. (Contributed by Alan Sare, 24-Oct-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
(𝐴 ∈ 𝐵 → ([𝐴 / 𝑥]𝐶 = 𝑥 ↔ 𝐶 = 𝐴))
 
Theoremzfregs2VD 45767* Virtual deduction proof of zfregs2 9712. (Contributed by Alan Sare, 24-Oct-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
(𝐴 ≠ ∅ → ¬ ∀𝑥 ∈ 𝐴 ∃𝑦(𝑦 ∈ 𝐴 ∧ 𝑦 ∈ 𝑥))
 
Theoremtpid3gVD 45768 Virtual deduction proof of tpid3g 4732. (Contributed by Alan Sare, 24-Oct-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
(𝐴 ∈ 𝐵 → 𝐴 ∈ {𝐶, 𝐷, 𝐴})
 
Theoremen3lplem1VD 45769* Virtual deduction proof of en3lplem1 9591. (Contributed by Alan Sare, 24-Oct-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝐴 ∈ 𝐵 ∧ 𝐵 ∈ 𝐶 ∧ 𝐶 ∈ 𝐴) → (𝑥 = 𝐴 → ∃𝑦(𝑦 ∈ {𝐴, 𝐵, 𝐶} ∧ 𝑦 ∈ 𝑥)))
 
Theoremen3lplem2VD 45770* Virtual deduction proof of en3lplem2 9592. (Contributed by Alan Sare, 24-Oct-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝐴 ∈ 𝐵 ∧ 𝐵 ∈ 𝐶 ∧ 𝐶 ∈ 𝐴) → (𝑥 ∈ {𝐴, 𝐵, 𝐶} → ∃𝑦(𝑦 ∈ {𝐴, 𝐵, 𝐶} ∧ 𝑦 ∈ 𝑥)))
 
Theoremen3lpVD 45771 Virtual deduction proof of en3lp 9593. (Contributed by Alan Sare, 24-Oct-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
¬ (𝐴 ∈ 𝐵 ∧ 𝐵 ∈ 𝐶 ∧ 𝐶 ∈ 𝐴)
 
21.43.7  Theorems proved using Virtual Deduction with mmj2 assistance
 
Theoremsimplbi2VD 45772 Virtual deduction proof of simplbi2 506. The following user's proof is completed by invoking mmj2's unify command and using mmj2's StepSelector to pick all remaining steps of the Metamath proof.
h1:: (𝜑 ↔ (𝜓 ∧ 𝜒))
3:1,?: e0a 45698 ((𝜓 ∧ 𝜒) → 𝜑)
qed:3,?: e0a 45698 (𝜓 → (𝜒 → 𝜑))
The proof of simplbi2 506 was automatically derived from it. (Contributed by Alan Sare, 31-Dec-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
(𝜑 ↔ (𝜓 ∧ 𝜒))    ⇒   (𝜓 → (𝜒 → 𝜑))
 
Theorem3ornot23VD 45773 Virtual deduction proof of 3ornot23 45436. The following user's proof is completed by invoking mmj2's unify command and using mmj2's StepSelector to pick all remaining steps of the Metamath proof.
1:: (   (¬ 𝜑 ∧ ¬ 𝜓)   ▶   (¬ 𝜑 ∧ ¬ 𝜓)   )
2:: (   (¬ 𝜑 ∧ ¬ 𝜓)   ,   (𝜒 ∨ 𝜑 ∨ 𝜓)   ▶   (𝜒 ∨ 𝜑 ∨ 𝜓)   )
3:1,?: e1a 45554 (   (¬ 𝜑 ∧ ¬ 𝜓)   ▶   ¬ 𝜑   )
4:1,?: e1a 45554 (   (¬ 𝜑 ∧ ¬ 𝜓)   ▶   ¬ 𝜓   )
5:3,4,?: e11 45615 (   (¬ 𝜑 ∧ ¬ 𝜓)   ▶   ¬ (𝜑 ∨ 𝜓)   )
6:2,?: e2 45558 (   (¬ 𝜑 ∧ ¬ 𝜓)   ,   (𝜒 ∨ 𝜑 ∨ 𝜓)   ▶   (𝜒 ∨ (𝜑 ∨ 𝜓))   )
7:5,6,?: e12 45650 (   (¬ 𝜑 ∧ ¬ 𝜓)   ,   (𝜒 ∨ 𝜑 ∨ 𝜓)   ▶   𝜒   )
8:7: (   (¬ 𝜑 ∧ ¬ 𝜓)   ▶   ((𝜒 ∨ 𝜑 ∨ 𝜓) → 𝜒)   )
qed:8: ((¬ 𝜑 ∧ ¬ 𝜓) → ((𝜒 ∨ 𝜑 ∨ 𝜓) → 𝜒))
(Contributed by Alan Sare, 31-Dec-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
((¬ 𝜑 ∧ ¬ 𝜓) → ((𝜒 ∨ 𝜑 ∨ 𝜓) → 𝜒))
 
Theoremorbi1rVD 45774 Virtual deduction proof of orbi1r 45437. The following user's proof is completed by invoking mmj2's unify command and using mmj2's StepSelector to pick all remaining steps of the Metamath proof.
1:: (   (𝜑 ↔ 𝜓)   ▶   (𝜑 ↔ 𝜓)   )
2:: (   (𝜑 ↔ 𝜓)   ,   (𝜒 ∨ 𝜑)    ▶   (𝜒 ∨ 𝜑)   )
3:2,?: e2 45558 (   (𝜑 ↔ 𝜓)   ,   (𝜒 ∨ 𝜑)    ▶   (𝜑 ∨ 𝜒)   )
4:1,3,?: e12 45650 (   (𝜑 ↔ 𝜓)   ,   (𝜒 ∨ 𝜑)    ▶   (𝜓 ∨ 𝜒)   )
5:4,?: e2 45558 (   (𝜑 ↔ 𝜓)   ,   (𝜒 ∨ 𝜑)    ▶   (𝜒 ∨ 𝜓)   )
6:5: (   (𝜑 ↔ 𝜓)   ▶   ((𝜒 ∨ 𝜑) → (𝜒 ∨ 𝜓))   )
7:: (   (𝜑 ↔ 𝜓)   ,   (𝜒 ∨ 𝜓)    ▶   (𝜒 ∨ 𝜓)   )
8:7,?: e2 45558 (   (𝜑 ↔ 𝜓)   ,   (𝜒 ∨ 𝜓)    ▶   (𝜓 ∨ 𝜒)   )
9:1,8,?: e12 45650 (   (𝜑 ↔ 𝜓)   ,   (𝜒 ∨ 𝜓)    ▶   (𝜑 ∨ 𝜒)   )
10:9,?: e2 45558 (   (𝜑 ↔ 𝜓)   ,   (𝜒 ∨ 𝜓)    ▶   (𝜒 ∨ 𝜑)   )
11:10: (   (𝜑 ↔ 𝜓)   ▶   ((𝜒 ∨ 𝜓) → (𝜒 ∨ 𝜑))   )
12:6,11,?: e11 45615 (   (𝜑 ↔ 𝜓)   ▶   ((𝜒 ∨ 𝜑) ↔ (𝜒 ∨ 𝜓))   )
qed:12: ((𝜑 ↔ 𝜓) → ((𝜒 ∨ 𝜑) ↔ (𝜒 ∨ 𝜓)))
(Contributed by Alan Sare, 31-Dec-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝜑 ↔ 𝜓) → ((𝜒 ∨ 𝜑) ↔ (𝜒 ∨ 𝜓)))
 
Theorembitr3VD 45775 Virtual deduction proof of bitr3 355. The following user's proof is completed by invoking mmj2's unify command and using mmj2's StepSelector to pick all remaining steps of the Metamath proof.
1:: (   (𝜑 ↔ 𝜓)   ▶   (𝜑 ↔ 𝜓)   )
2:1,?: e1a 45554 (   (𝜑 ↔ 𝜓)   ▶   (𝜓 ↔ 𝜑)   )
3:: (   (𝜑 ↔ 𝜓)   ,   (𝜑 ↔ 𝜒)    ▶   (𝜑 ↔ 𝜒)   )
4:3,?: e2 45558 (   (𝜑 ↔ 𝜓)   ,   (𝜑 ↔ 𝜒)    ▶   (𝜒 ↔ 𝜑)   )
5:2,4,?: e12 45650 (   (𝜑 ↔ 𝜓)   ,   (𝜑 ↔ 𝜒)    ▶   (𝜓 ↔ 𝜒)   )
6:5: (   (𝜑 ↔ 𝜓)   ▶   ((𝜑 ↔ 𝜒) → (𝜓 ↔ 𝜒))   )
qed:6: ((𝜑 ↔ 𝜓) → ((𝜑 ↔ 𝜒) → (𝜓 ↔ 𝜒)))
(Contributed by Alan Sare, 31-Dec-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝜑 ↔ 𝜓) → ((𝜑 ↔ 𝜒) → (𝜓 ↔ 𝜒)))
 
Theorem3orbi123VD 45776 Virtual deduction proof of 3orbi123 45438. The following user's proof is completed by invoking mmj2's unify command and using mmj2's StepSelector to pick all remaining steps of the Metamath proof.
1:: (   ((𝜑 ↔ 𝜓) ∧ (𝜒 ↔ 𝜃) ∧ (𝜏 ↔ 𝜂))   ▶   ((𝜑 ↔ 𝜓) ∧ (𝜒 ↔ 𝜃) ∧ (𝜏 ↔ 𝜂))   )
2:1,?: e1a 45554 (   ((𝜑 ↔ 𝜓) ∧ (𝜒 ↔ 𝜃) ∧ (𝜏 ↔ 𝜂))   ▶   (𝜑 ↔ 𝜓)   )
3:1,?: e1a 45554 (   ((𝜑 ↔ 𝜓) ∧ (𝜒 ↔ 𝜃) ∧ (𝜏 ↔ 𝜂))   ▶   (𝜒 ↔ 𝜃)   )
4:1,?: e1a 45554 (   ((𝜑 ↔ 𝜓) ∧ (𝜒 ↔ 𝜃) ∧ (𝜏 ↔ 𝜂))   ▶   (𝜏 ↔ 𝜂)   )
5:2,3,?: e11 45615 (   ((𝜑 ↔ 𝜓) ∧ (𝜒 ↔ 𝜃) ∧ (𝜏 ↔ 𝜂))   ▶   ((𝜑 ∨ 𝜒) ↔ (𝜓 ∨ 𝜃))   )
6:5,4,?: e11 45615 (   ((𝜑 ↔ 𝜓) ∧ (𝜒 ↔ 𝜃) ∧ (𝜏 ↔ 𝜂))   ▶   (((𝜑 ∨ 𝜒) ∨ 𝜏) ↔ ((𝜓 ∨ 𝜃) ∨ 𝜂))   )
7:?: (((𝜑 ∨ 𝜒) ∨ 𝜏) ↔ (𝜑 ∨ 𝜒 ∨ 𝜏))
8:6,7,?: e10 45621 (   ((𝜑 ↔ 𝜓) ∧ (𝜒 ↔ 𝜃) ∧ (𝜏 ↔ 𝜂))   ▶   ((𝜑 ∨ 𝜒 ∨ 𝜏) ↔ ((𝜓 ∨ 𝜃) ∨ 𝜂))   )
9:?: (((𝜓 ∨ 𝜃) ∨ 𝜂) ↔ (𝜓 ∨ 𝜃 ∨ 𝜂))
10:8,9,?: e10 45621 (   ((𝜑 ↔ 𝜓) ∧ (𝜒 ↔ 𝜃) ∧ (𝜏 ↔ 𝜂))   ▶   ((𝜑 ∨ 𝜒 ∨ 𝜏) ↔ (𝜓 ∨ 𝜃 ∨ 𝜂))   )
qed:10: (((𝜑 ↔ 𝜓) ∧ (𝜒 ↔ 𝜃) ∧ (𝜏 ↔ 𝜂)) → ((𝜑 ∨ 𝜒 ∨ 𝜏) ↔ (𝜓 ∨ 𝜃 ∨ 𝜂)))
(Contributed by Alan Sare, 31-Dec-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
(((𝜑 ↔ 𝜓) ∧ (𝜒 ↔ 𝜃) ∧ (𝜏 ↔ 𝜂)) → ((𝜑 ∨ 𝜒 ∨ 𝜏) ↔ (𝜓 ∨ 𝜃 ∨ 𝜂)))
 
Theoremsbc3orgVD 45777 Virtual deduction proof of the analogue of sbcor 3788 with three disjuncts. The following user's proof is completed by invoking mmj2's unify command and using mmj2's StepSelector to pick all remaining steps of the Metamath proof.
1:: (   𝐴 ∈ 𝐵   ▶   𝐴 ∈ 𝐵   )
2:1,?: e1a 45554 (   𝐴 ∈ 𝐵   ▶   ([𝐴 / 𝑥]((𝜑 ∨ 𝜓) ∨ 𝜒) ↔ ([𝐴 / 𝑥](𝜑 ∨ 𝜓) ∨ [𝐴 / 𝑥]𝜒))   )
3:: (((𝜑 ∨ 𝜓) ∨ 𝜒) ↔ (𝜑 ∨ 𝜓 ∨ 𝜒))
32:3: ∀𝑥(((𝜑 ∨ 𝜓) ∨ 𝜒) ↔ (𝜑 ∨ 𝜓 ∨ 𝜒))
33:1,32,?: e10 45621 (   𝐴 ∈ 𝐵   ▶   [𝐴 / 𝑥](((𝜑 ∨ 𝜓) ∨ 𝜒) ↔ (𝜑 ∨ 𝜓 ∨ 𝜒))   )
4:1,33,?: e11 45615 (   𝐴 ∈ 𝐵   ▶   ([𝐴 / 𝑥]((𝜑 ∨ 𝜓) ∨ 𝜒) ↔ [𝐴 / 𝑥](𝜑 ∨ 𝜓 ∨ 𝜒))   )
5:2,4,?: e11 45615 (   𝐴 ∈ 𝐵   ▶   ([𝐴 / 𝑥](𝜑 ∨ 𝜓 ∨ 𝜒) ↔ ([𝐴 / 𝑥](𝜑 ∨ 𝜓) ∨ [𝐴 / 𝑥]𝜒))   )
6:1,?: e1a 45554 (   𝐴 ∈ 𝐵   ▶   ([𝐴 / 𝑥](𝜑 ∨ 𝜓) ↔ ([𝐴 / 𝑥]𝜑 ∨ [𝐴 / 𝑥]𝜓))   )
7:6,?: e1a 45554 (   𝐴 ∈ 𝐵   ▶   (([𝐴 / 𝑥](𝜑 ∨ 𝜓) ∨ [𝐴 / 𝑥]𝜒) ↔ (([𝐴 / 𝑥]𝜑 ∨ [𝐴 / 𝑥]𝜓) ∨ [𝐴 / 𝑥]𝜒))   )
8:5,7,?: e11 45615 (   𝐴 ∈ 𝐵   ▶   ([𝐴 / 𝑥](𝜑 ∨ 𝜓 ∨ 𝜒) ↔ (([𝐴 / 𝑥]𝜑 ∨ [𝐴 / 𝑥]𝜓) ∨ [𝐴 / 𝑥]𝜒))   )
9:?: ((([𝐴 / 𝑥]𝜑 ∨ [𝐴 / 𝑥]𝜓) ∨ [𝐴 / 𝑥]𝜒) ↔ ([𝐴 / 𝑥]𝜑 ∨ [𝐴 / 𝑥]𝜓 ∨ [𝐴 / 𝑥]𝜒))
10:8,9,?: e10 45621 (   𝐴 ∈ 𝐵   ▶   ([𝐴 / 𝑥](𝜑 ∨ 𝜓 ∨ 𝜒) ↔ ([𝐴 / 𝑥]𝜑 ∨ [𝐴 / 𝑥]𝜓 ∨ [𝐴 / 𝑥]𝜒))   )
qed:10: (𝐴 ∈ 𝐵 → ([𝐴 / 𝑥](𝜑 ∨ 𝜓 ∨ 𝜒) ↔ ([𝐴 / 𝑥]𝜑 ∨ [𝐴 / 𝑥]𝜓 ∨ [𝐴 / 𝑥]𝜒)))
(Contributed by Alan Sare, 31-Dec-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
(𝐴 ∈ 𝐵 → ([𝐴 / 𝑥](𝜑 ∨ 𝜓 ∨ 𝜒) ↔ ([𝐴 / 𝑥]𝜑 ∨ [𝐴 / 𝑥]𝜓 ∨ [𝐴 / 𝑥]𝜒)))
 
Theorem19.21a3con13vVD 45778* Virtual deduction proof of alrim3con13v 45460. The following user's proof is completed by invoking mmj2's unify command and using mmj2's StepSelector to pick all remaining steps of the Metamath proof.
1:: (   (𝜑 → ∀𝑥𝜑)    ▶   (𝜑 → ∀𝑥𝜑)   )
2:: (   (𝜑 → ∀𝑥𝜑)   ,   (𝜓 ∧ 𝜑 ∧ 𝜒)   ▶   (𝜓 ∧ 𝜑 ∧ 𝜒)   )
3:2,?: e2 45558 (   (𝜑 → ∀𝑥𝜑)   ,   (𝜓 ∧ 𝜑 ∧ 𝜒)   ▶   𝜓   )
4:2,?: e2 45558 (   (𝜑 → ∀𝑥𝜑)   ,   (𝜓 ∧ 𝜑 ∧ 𝜒)   ▶   𝜑   )
5:2,?: e2 45558 (   (𝜑 → ∀𝑥𝜑)   ,   (𝜓 ∧ 𝜑 ∧ 𝜒)   ▶   𝜒   )
6:1,4,?: e12 45650 (   (𝜑 → ∀𝑥𝜑)   ,   (𝜓 ∧ 𝜑 ∧ 𝜒)   ▶   ∀𝑥𝜑   )
7:3,?: e2 45558 (   (𝜑 → ∀𝑥𝜑)   ,   (𝜓 ∧ 𝜑 ∧ 𝜒)   ▶   ∀𝑥𝜓   )
8:5,?: e2 45558 (   (𝜑 → ∀𝑥𝜑)   ,   (𝜓 ∧ 𝜑 ∧ 𝜒)   ▶   ∀𝑥𝜒   )
9:7,6,8,?: e222 45563 (   (𝜑 → ∀𝑥𝜑)   ,   (𝜓 ∧ 𝜑 ∧ 𝜒)   ▶   (∀𝑥𝜓 ∧ ∀𝑥𝜑 ∧ ∀𝑥𝜒)   )
10:9,?: e2 45558 (   (𝜑 → ∀𝑥𝜑)   ,   (𝜓 ∧ 𝜑 ∧ 𝜒)   ▶   ∀𝑥(𝜓 ∧ 𝜑 ∧ 𝜒)   )
11:10:in2 (   (𝜑 → ∀𝑥𝜑)   ▶   ((𝜓 ∧ 𝜑 ∧ 𝜒) → ∀𝑥(𝜓 ∧ 𝜑 ∧ 𝜒))   )
qed:11:in1 ((𝜑 → ∀𝑥𝜑) → ((𝜓 ∧ 𝜑 ∧ 𝜒) → ∀𝑥(𝜓 ∧ 𝜑 ∧ 𝜒)))
(Contributed by Alan Sare, 31-Dec-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝜑 → ∀𝑥𝜑) → ((𝜓 ∧ 𝜑 ∧ 𝜒) → ∀𝑥(𝜓 ∧ 𝜑 ∧ 𝜒)))
 
TheoremexbirVD 45779 Virtual deduction proof of exbir 45406. The following user's proof is completed by invoking mmj2's unify command and using mmj2's StepSelector to pick all remaining steps of the Metamath proof.
1:: (   ((𝜑 ∧ 𝜓) → (𝜒 ↔ 𝜃))    ▶   ((𝜑 ∧ 𝜓) → (𝜒 ↔ 𝜃))   )
2:: (   ((𝜑 ∧ 𝜓) → (𝜒 ↔ 𝜃))   ,    (𝜑 ∧ 𝜓)   ▶   (𝜑 ∧ 𝜓)   )
3:: (   ((𝜑 ∧ 𝜓) → (𝜒 ↔ 𝜃))   ,    (𝜑 ∧ 𝜓), 𝜃   ▶   𝜃   )
5:1,2,?: e12 45650 (   ((𝜑 ∧ 𝜓) → (𝜒 ↔ 𝜃)), (𝜑 ∧ 𝜓)   ▶   (𝜒 ↔ 𝜃)   )
6:3,5,?: e32 45684 (   ((𝜑 ∧ 𝜓) → (𝜒 ↔ 𝜃)), (𝜑 ∧ 𝜓), 𝜃   ▶   𝜒   )
7:6: (   ((𝜑 ∧ 𝜓) → (𝜒 ↔ 𝜃)), (𝜑 ∧ 𝜓)   ▶   (𝜃 → 𝜒)   )
8:7: (   ((𝜑 ∧ 𝜓) → (𝜒 ↔ 𝜃))    ▶   ((𝜑 ∧ 𝜓) → (𝜃 → 𝜒))   )
9:8,?: e1a 45554 (   ((𝜑 ∧ 𝜓) → (𝜒 ↔ 𝜃))   ▶   (𝜑 → (𝜓 → (𝜃 → 𝜒)))   )
qed:9: (((𝜑 ∧ 𝜓) → (𝜒 ↔ 𝜃)) → (𝜑 → (𝜓 → (𝜃 → 𝜒))))
(Contributed by Alan Sare, 13-Dec-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
(((𝜑 ∧ 𝜓) → (𝜒 ↔ 𝜃)) → (𝜑 → (𝜓 → (𝜃 → 𝜒))))
 
TheoremexbiriVD 45780 Virtual deduction proof of exbiri 823. The following user's proof is completed by invoking mmj2's unify command and using mmj2's StepSelector to pick all remaining steps of the Metamath proof.
h1:: ((𝜑 ∧ 𝜓) → (𝜒 ↔ 𝜃))
2:: (   𝜑   ▶   𝜑   )
3:: (   𝜑   ,   𝜓   ▶   𝜓   )
4:: (   𝜑   ,   𝜓   ,   𝜃   ▶   𝜃   )
5:2,1,?: e10 45621 (   𝜑   ▶   (𝜓 → (𝜒 ↔ 𝜃))   )
6:3,5,?: e21 45656 (   𝜑   ,   𝜓   ▶   (𝜒 ↔ 𝜃)   )
7:4,6,?: e32 45684 (   𝜑   ,   𝜓   ,   𝜃   ▶   𝜒   )
8:7: (   𝜑   ,   𝜓   ▶   (𝜃 → 𝜒)   )
9:8: (   𝜑   ▶   (𝜓 → (𝜃 → 𝜒))   )
qed:9: (𝜑 → (𝜓 → (𝜃 → 𝜒)))
(Contributed by Alan Sare, 31-Dec-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝜑 ∧ 𝜓) → (𝜒 ↔ 𝜃))    ⇒   (𝜑 → (𝜓 → (𝜃 → 𝜒)))
 
Theoremrspsbc2VD 45781* Virtual deduction proof of rspsbc2 45461. The following user's proof is completed by invoking mmj2's unify command and using mmj2's StepSelector to pick all remaining steps of the Metamath proof.
1:: (   𝐴 ∈ 𝐵   ▶   𝐴 ∈ 𝐵   )
2:: (   𝐴 ∈ 𝐵   ,   𝐶 ∈ 𝐷   ▶   𝐶 ∈ 𝐷   )
3:: (   𝐴 ∈ 𝐵   ,   𝐶 ∈ 𝐷   ,   ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐷𝜑   ▶   ∀𝑥 ∈ 𝐵∀𝑦 ∈ 𝐷𝜑   )
4:1,3,?: e13 45674 (   𝐴 ∈ 𝐵   ,   𝐶 ∈ 𝐷   ,   ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐷𝜑   ▶   [𝐴 / 𝑥]∀𝑦 ∈ 𝐷𝜑   )
5:1,4,?: e13 45674 (   𝐴 ∈ 𝐵   ,   𝐶 ∈ 𝐷   ,   ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐷𝜑   ▶   ∀𝑦 ∈ 𝐷[𝐴 / 𝑥]𝜑   )
6:2,5,?: e23 45681 (   𝐴 ∈ 𝐵   ,   𝐶 ∈ 𝐷   ,   ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐷𝜑   ▶   [𝐶 / 𝑦][𝐴 / 𝑥]𝜑   )
7:6: (   𝐴 ∈ 𝐵   ,   𝐶 ∈ 𝐷   ▶   (∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐷𝜑 → [𝐶 / 𝑦][𝐴 / 𝑥]𝜑)   )
8:7: (   𝐴 ∈ 𝐵   ▶   (𝐶 ∈ 𝐷 → (∀𝑥 ∈ 𝐵∀𝑦 ∈ 𝐷𝜑 → [𝐶 / 𝑦][𝐴 / 𝑥]𝜑))   )
qed:8: (𝐴 ∈ 𝐵 → (𝐶 ∈ 𝐷 → (∀𝑥 ∈ 𝐵∀𝑦 ∈ 𝐷𝜑 → [𝐶 / 𝑦][𝐴 / 𝑥]𝜑)))
(Contributed by Alan Sare, 31-Dec-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
(𝐴 ∈ 𝐵 → (𝐶 ∈ 𝐷 → (∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐷 𝜑 → [𝐶 / 𝑦][𝐴 / 𝑥]𝜑)))
 
Theorem3impexpVD 45782 Virtual deduction proof of 3impexp 1377. The following user's proof is completed by invoking mmj2's unify command and using mmj2's StepSelector to pick all remaining steps of the Metamath proof.
1:: (   ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃)   ▶   ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃)   )
2:: ((𝜑 ∧ 𝜓 ∧ 𝜒) ↔ ((𝜑 ∧ 𝜓) ∧ 𝜒))
3:1,2,?: e10 45621 (   ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃)   ▶   (((𝜑 ∧ 𝜓) ∧ 𝜒) → 𝜃)   )
4:3,?: e1a 45554 (   ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃)   ▶   ((𝜑 ∧ 𝜓) → (𝜒 → 𝜃))   )
5:4,?: e1a 45554 (   ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃)   ▶   (𝜑 → (𝜓 → (𝜒 → 𝜃)))   )
6:5: (((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃) → (𝜑 → (𝜓 → (𝜒 → 𝜃))))
7:: (   (𝜑 → (𝜓 → (𝜒 → 𝜃)))   ▶   (𝜑 → (𝜓 → (𝜒 → 𝜃)))   )
8:7,?: e1a 45554 (   (𝜑 → (𝜓 → (𝜒 → 𝜃)))   ▶   ((𝜑 ∧ 𝜓) → (𝜒 → 𝜃))   )
9:8,?: e1a 45554 (   (𝜑 → (𝜓 → (𝜒 → 𝜃)))   ▶   (((𝜑 ∧ 𝜓) ∧ 𝜒) → 𝜃)   )
10:2,9,?: e01 45618 (   (𝜑 → (𝜓 → (𝜒 → 𝜃)))   ▶   ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃)   )
11:10: ((𝜑 → (𝜓 → (𝜒 → 𝜃))) → ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃))
qed:6,11,?: e00 45694 (((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃) ↔ (𝜑 → (𝜓 → (𝜒 → 𝜃))))
(Contributed by Alan Sare, 31-Dec-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
(((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃) ↔ (𝜑 → (𝜓 → (𝜒 → 𝜃))))
 
Theorem3impexpbicomVD 45783 Virtual deduction proof of 3impexpbicom 45407. The following user's proof is completed by invoking mmj2's unify command and using mmj2's StepSelector to pick all remaining steps of the Metamath proof.
1:: (   ((𝜑 ∧ 𝜓 ∧ 𝜒) → (𝜃 ↔ 𝜏))   ▶   ((𝜑 ∧ 𝜓 ∧ 𝜒) → (𝜃 ↔ 𝜏))   )
2:: ((𝜃 ↔ 𝜏) ↔ (𝜏 ↔ 𝜃))
3:1,2,?: e10 45621 (   ((𝜑 ∧ 𝜓 ∧ 𝜒) → (𝜃 ↔ 𝜏))   ▶   ((𝜑 ∧ 𝜓 ∧ 𝜒) → (𝜏 ↔ 𝜃))   )
4:3,?: e1a 45554 (   ((𝜑 ∧ 𝜓 ∧ 𝜒) → (𝜃 ↔ 𝜏))   ▶   (𝜑 → (𝜓 → (𝜒 → (𝜏 ↔ 𝜃))))   )
5:4: (((𝜑 ∧ 𝜓 ∧ 𝜒) → (𝜃 ↔ 𝜏)) → (𝜑 → (𝜓 → (𝜒 → (𝜏 ↔ 𝜃)))))
6:: (   (𝜑 → (𝜓 → (𝜒 → (𝜏 ↔ 𝜃))))   ▶   (𝜑 → (𝜓 → (𝜒 → (𝜏 ↔ 𝜃))))   )
7:6,?: e1a 45554 (   (𝜑 → (𝜓 → (𝜒 → (𝜏 ↔ 𝜃))))   ▶   ((𝜑 ∧ 𝜓 ∧ 𝜒) → (𝜏 ↔ 𝜃))   )
8:7,2,?: e10 45621 (   (𝜑 → (𝜓 → (𝜒 → (𝜏 ↔ 𝜃))))   ▶   ((𝜑 ∧ 𝜓 ∧ 𝜒) → (𝜃 ↔ 𝜏))   )
9:8: ((𝜑 → (𝜓 → (𝜒 → (𝜏 ↔ 𝜃)))) → ((𝜑 ∧ 𝜓 ∧ 𝜒) → (𝜃 ↔ 𝜏)))
qed:5,9,?: e00 45694 (((𝜑 ∧ 𝜓 ∧ 𝜒) → (𝜃 ↔ 𝜏)) ↔ (𝜑 → (𝜓 → (𝜒 → (𝜏 ↔ 𝜃)))))
(Contributed by Alan Sare, 31-Dec-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
(((𝜑 ∧ 𝜓 ∧ 𝜒) → (𝜃 ↔ 𝜏)) ↔ (𝜑 → (𝜓 → (𝜒 → (𝜏 ↔ 𝜃)))))
 
Theorem3impexpbicomiVD 45784 Virtual deduction proof of 3impexpbicomi 45408. The following user's proof is completed by invoking mmj2's unify command and using mmj2's StepSelector to pick all remaining steps of the Metamath proof.
h1:: ((𝜑 ∧ 𝜓 ∧ 𝜒) → (𝜃 ↔ 𝜏))
qed:1,?: e0a 45698 (𝜑 → (𝜓 → (𝜒 → (𝜏 ↔ 𝜃))))
(Contributed by Alan Sare, 31-Dec-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝜑 ∧ 𝜓 ∧ 𝜒) → (𝜃 ↔ 𝜏))    ⇒   (𝜑 → (𝜓 → (𝜒 → (𝜏 ↔ 𝜃))))
 
TheoremsbcoreleleqVD 45785* Virtual deduction proof of sbcoreleleq 45462. The following user's proof is completed by invoking mmj2's unify command and using mmj2's StepSelector to pick all remaining steps of the Metamath proof.
1:: (   𝐴 ∈ 𝐵   ▶   𝐴 ∈ 𝐵   )
2:1,?: e1a 45554 (   𝐴 ∈ 𝐵   ▶   ([𝐴 / 𝑦]𝑥 ∈ 𝑦 ↔ 𝑥 ∈ 𝐴)   )
3:1,?: e1a 45554 (   𝐴 ∈ 𝐵   ▶   ([𝐴 / 𝑦]𝑦 ∈ 𝑥 ↔ 𝐴 ∈ 𝑥)   )
4:1,?: e1a 45554 (   𝐴 ∈ 𝐵   ▶   ([𝐴 / 𝑦]𝑥 = 𝑦 ↔ 𝑥 = 𝐴)   )
5:2,3,4,?: e111 45601 (   𝐴 ∈ 𝐵   ▶   ((𝑥 ∈ 𝐴 ∨ 𝐴 ∈ 𝑥 ∨ 𝑥 = 𝐴) ↔ ([𝐴 / 𝑦]𝑥 ∈ 𝑦 ∨ [𝐴 / 𝑦]𝑦 ∈ 𝑥 ∨ [𝐴 / 𝑦]𝑥 = 𝑦))   )
6:1,?: e1a 45554 (   𝐴 ∈ 𝐵    ▶   ([𝐴 / 𝑦](𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ↔ ([𝐴 / 𝑦]𝑥 ∈ 𝑦 ∨ [𝐴 / 𝑦]𝑦 ∈ 𝑥 ∨ [𝐴 / 𝑦]𝑥 = 𝑦))   )
7:5,6: e11 45615 (   𝐴 ∈ 𝐵   ▶   ([𝐴 / 𝑦](𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ↔ (𝑥 ∈ 𝐴 ∨ 𝐴 ∈ 𝑥 ∨ 𝑥 = 𝐴))   )
qed:7: (𝐴 ∈ 𝐵 → ([𝐴 / 𝑦](𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ↔ (𝑥 ∈ 𝐴 ∨ 𝐴 ∈ 𝑥 ∨ 𝑥 = 𝐴)))
(Contributed by Alan Sare, 31-Dec-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
(𝐴 ∈ 𝐵 → ([𝐴 / 𝑦](𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ↔ (𝑥 ∈ 𝐴 ∨ 𝐴 ∈ 𝑥 ∨ 𝑥 = 𝐴)))
 
Theoremhbra2VD 45786* Virtual deduction proof of nfra2 3361. The following user's proof is completed by invoking mmj2's unify command and using mmj2's StepSelector to pick all remaining steps of the Metamath proof.
1:: (∀𝑦 ∈ 𝐵∀𝑥 ∈ 𝐴𝜑 → ∀𝑦∀𝑦 ∈ 𝐵∀𝑥 ∈ 𝐴𝜑)
2:: (∀𝑥 ∈ 𝐴∀𝑦 ∈ 𝐵𝜑 ↔ ∀𝑦 ∈ 𝐵∀𝑥 ∈ 𝐴𝜑)
3:1,2,?: e00 45694 (∀𝑥 ∈ 𝐴∀𝑦 ∈ 𝐵𝜑 → ∀𝑦∀𝑦 ∈ 𝐵∀𝑥 ∈ 𝐴𝜑)
4:2: ∀𝑦(∀𝑥 ∈ 𝐴∀𝑦 ∈ 𝐵𝜑 ↔ ∀𝑦 ∈ 𝐵∀𝑥 ∈ 𝐴𝜑)
5:4,?: e0a 45698 (∀𝑦∀𝑥 ∈ 𝐴∀𝑦 ∈ 𝐵𝜑 ↔ ∀𝑦∀𝑦 ∈ 𝐵∀𝑥 ∈ 𝐴𝜑)
qed:3,5,?: e00 45694 (∀𝑥 ∈ 𝐴∀𝑦 ∈ 𝐵𝜑 → ∀𝑦∀𝑥 ∈ 𝐴∀𝑦 ∈ 𝐵𝜑)
(Contributed by Alan Sare, 31-Dec-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
(∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜑 → ∀𝑦∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜑)
 
TheoremtratrbVD 45787* Virtual deduction proof of tratrb 45463. The following user's proof is completed by invoking mmj2's unify command and using mmj2's StepSelector to pick all remaining steps of the Metamath proof.
1:: (   (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴)    ▶   (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴)   )
2:1,?: e1a 45554 (   (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴)   ▶   Tr 𝐴   )
3:1,?: e1a 45554 (   (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴)    ▶   ∀𝑥 ∈ 𝐴∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦)   )
4:1,?: e1a 45554 (   (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴)   ▶   𝐵 ∈ 𝐴   )
5:: (   (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴), (𝑥 ∈ 𝑦 ∧ 𝑦 ∈ 𝐵)   ▶   (𝑥 ∈ 𝑦 ∧ 𝑦 ∈ 𝐵)   )
6:5,?: e2 45558 (   (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴), (𝑥 ∈ 𝑦 ∧ 𝑦 ∈ 𝐵)   ▶   𝑥 ∈ 𝑦   )
7:5,?: e2 45558 (   (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴), (𝑥 ∈ 𝑦 ∧ 𝑦 ∈ 𝐵)   ▶   𝑦 ∈ 𝐵   )
8:2,7,4,?: e121 45583 (   (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴), (𝑥 ∈ 𝑦 ∧ 𝑦 ∈ 𝐵)   ▶   𝑦 ∈ 𝐴   )
9:2,6,8,?: e122 45580 (   (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴), (𝑥 ∈ 𝑦 ∧ 𝑦 ∈ 𝐵)   ▶   𝑥 ∈ 𝐴   )
10:: (   (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴), (𝑥 ∈ 𝑦 ∧ 𝑦 ∈ 𝐵), 𝐵 ∈ 𝑥   ▶   𝐵 ∈ 𝑥   )
11:6,7,10,?: e223 45562 (   (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴), (𝑥 ∈ 𝑦 ∧ 𝑦 ∈ 𝐵), 𝐵 ∈ 𝑥   ▶   (𝑥 ∈ 𝑦 ∧ 𝑦 ∈ 𝐵 ∧ 𝐵 ∈ 𝑥)   )
12:11: (   (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴), (𝑥 ∈ 𝑦 ∧ 𝑦 ∈ 𝐵)   ▶   (𝐵 ∈ 𝑥 → (𝑥 ∈ 𝑦 ∧ 𝑦 ∈ 𝐵 ∧ 𝐵 ∈ 𝑥))   )
13:: ¬ (𝑥 ∈ 𝑦 ∧ 𝑦 ∈ 𝐵 ∧ 𝐵 ∈ 𝑥)
14:12,13,?: e20 45653 (   (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴), (𝑥 ∈ 𝑦 ∧ 𝑦 ∈ 𝐵)   ▶   ¬ 𝐵 ∈ 𝑥   )
15:: (   (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴), (𝑥 ∈ 𝑦 ∧ 𝑦 ∈ 𝐵), 𝑥 = 𝐵   ▶   𝑥 = 𝐵   )
16:7,15,?: e23 45681 (   (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴), (𝑥 ∈ 𝑦 ∧ 𝑦 ∈ 𝐵), 𝑥 = 𝐵   ▶   𝑦 ∈ 𝑥   )
17:6,16,?: e23 45681 (   (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴), (𝑥 ∈ 𝑦 ∧ 𝑦 ∈ 𝐵), 𝑥 = 𝐵   ▶   (𝑥 ∈ 𝑦 ∧ 𝑦 ∈ 𝑥)   )
18:17: (   (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴), (𝑥 ∈ 𝑦 ∧ 𝑦 ∈ 𝐵)   ▶   (𝑥 = 𝐵 → (𝑥 ∈ 𝑦 ∧ 𝑦 ∈ 𝑥))   )
19:: ¬ (𝑥 ∈ 𝑦 ∧ 𝑦 ∈ 𝑥)
20:18,19,?: e20 45653 (   (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴), (𝑥 ∈ 𝑦 ∧ 𝑦 ∈ 𝐵)   ▶   ¬ 𝑥 = 𝐵   )
21:3,?: e1a 45554 (   (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴)   ▶   ∀𝑦 ∈ 𝐴 ∀𝑥 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦)   )
22:21,9,4,?: e121 45583 (   (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴), (𝑥 ∈ 𝑦 ∧ 𝑦 ∈ 𝐵)   ▶   [𝑥 / 𝑥][𝐵 / 𝑦](𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦)   )
23:22,?: e2 45558 (   (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴), (𝑥 ∈ 𝑦 ∧ 𝑦 ∈ 𝐵)   ▶   [𝐵 / 𝑦](𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦)   )
24:4,23,?: e12 45650 (   (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴), (𝑥 ∈ 𝑦 ∧ 𝑦 ∈ 𝐵)   ▶   (𝑥 ∈ 𝐵 ∨ 𝐵 ∈ 𝑥 ∨ 𝑥 = 𝐵)   )
25:14,20,24,?: e222 45563 (   (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴), (𝑥 ∈ 𝑦 ∧ 𝑦 ∈ 𝐵)   ▶   𝑥 ∈ 𝐵   )
26:25: (   (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴)   ▶   ((𝑥 ∈ 𝑦 ∧ 𝑦 ∈ 𝐵) → 𝑥 ∈ 𝐵)   )
27:: (∀𝑥 ∈ 𝐴∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) → ∀𝑦∀𝑥 ∈ 𝐴∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦))
28:27,?: e0a 45698 ((Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴) → ∀𝑦(Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴))
29:28,26: (   (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴)    ▶   ∀𝑦((𝑥 ∈ 𝑦 ∧ 𝑦 ∈ 𝐵) → 𝑥 ∈ 𝐵)   )
30:: (∀𝑥 ∈ 𝐴∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) → ∀𝑥∀𝑥 ∈ 𝐴∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦))
31:30,?: e0a 45698 ((Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴) → ∀𝑥(Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴))
32:31,29: (   (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴)   ▶   ∀𝑥 ∀𝑦((𝑥 ∈ 𝑦 ∧ 𝑦 ∈ 𝐵) → 𝑥 ∈ 𝐵)   )
33:32,?: e1a 45554 (   (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴)   ▶   Tr 𝐵   )
qed:33: ((Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴) → Tr 𝐵)
(Contributed by Alan Sare, 31-Dec-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
((Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴 (𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦) ∧ 𝐵 ∈ 𝐴) → Tr 𝐵)
 
Theoremal2imVD 45788 Virtual deduction proof of al2im 1847. The following user's proof is completed by invoking mmj2's unify command and using mmj2's StepSelector to pick all remaining steps of the Metamath proof.
1:: (   ∀𝑥(𝜑 → (𝜓 → 𝜒))    ▶   ∀𝑥(𝜑 → (𝜓 → 𝜒))   )
2:1,?: e1a 45554 (   ∀𝑥(𝜑 → (𝜓 → 𝜒))    ▶   (∀𝑥𝜑 → ∀𝑥(𝜓 → 𝜒))   )
3:: (∀𝑥(𝜓 → 𝜒) → (∀𝑥𝜓 → ∀𝑥𝜒))
4:2,3,?: e10 45621 (   ∀𝑥(𝜑 → (𝜓 → 𝜒))    ▶   (∀𝑥𝜑 → (∀𝑥𝜓 → ∀𝑥𝜒))   )
qed:4: (∀𝑥(𝜑 → (𝜓 → 𝜒)) → (∀𝑥𝜑 → (∀𝑥𝜓 → ∀𝑥𝜒)))
(Contributed by Alan Sare, 31-Dec-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
(∀𝑥(𝜑 → (𝜓 → 𝜒)) → (∀𝑥𝜑 → (∀𝑥𝜓 → ∀𝑥𝜒)))
 
Theoremsyl5impVD 45789 Virtual deduction proof of syl5imp 45439. The following user's proof is completed by invoking mmj2's unify command and using mmj2's StepSelector to pick all remaining steps of the Metamath proof.
1:: (   (𝜑 → (𝜓 → 𝜒))   ▶   (𝜑 → (𝜓 → 𝜒))   )
2:1,?: e1a 45554 (   (𝜑 → (𝜓 → 𝜒))   ▶   (𝜓 → (𝜑 → 𝜒))   )
3:: (   (𝜑 → (𝜓 → 𝜒))   ,   (𝜃 → 𝜓)   ▶   (𝜃 → 𝜓)   )
4:3,2,?: e21 45656 (   (𝜑 → (𝜓 → 𝜒))   ,   (𝜃 → 𝜓)   ▶   (𝜃 → (𝜑 → 𝜒))   )
5:4,?: e2 45558 (   (𝜑 → (𝜓 → 𝜒))   ,   (𝜃 → 𝜓)   ▶   (𝜑 → (𝜃 → 𝜒))   )
6:5: (   (𝜑 → (𝜓 → 𝜒))   ▶   ((𝜃 → 𝜓) → (𝜑 → (𝜃 → 𝜒)))   )
qed:6: ((𝜑 → (𝜓 → 𝜒)) → ((𝜃 → 𝜓) → (𝜑 → (𝜃 → 𝜒))))
(Contributed by Alan Sare, 31-Dec-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝜑 → (𝜓 → 𝜒)) → ((𝜃 → 𝜓) → (𝜑 → (𝜃 → 𝜒))))
 
TheoremidiVD 45790 Virtual deduction proof of idiALT 45405. The following user's proof is completed by invoking mmj2's unify command and using mmj2's StepSelector to pick all remaining steps of the Metamath proof.
h1:: 𝜑
qed:1,?: e0a 45698 𝜑
(Contributed by Alan Sare, 31-Dec-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
𝜑    ⇒   𝜑
 
TheoremancomstVD 45791 Closed form of ancoms 464. The following user's proof is completed by invoking mmj2's unify command and using mmj2's StepSelector to pick all remaining steps of the Metamath proof.
1:: ((𝜑 ∧ 𝜓) ↔ (𝜓 ∧ 𝜑))
qed:1,?: e0a 45698 (((𝜑 ∧ 𝜓) → 𝜒) ↔ ((𝜓 ∧ 𝜑) → 𝜒))
The proof of ancomst 470 is derived automatically from it. (Contributed by Alan Sare, 25-Dec-2011.) (Proof modification is discouraged.) (New usage is discouraged.)
(((𝜑 ∧ 𝜓) → 𝜒) ↔ ((𝜓 ∧ 𝜑) → 𝜒))
 
Theoremssralv2VD 45792* Quantification restricted to a subclass for two quantifiers. ssralv 3999 for two quantifiers. The following User's Proof is a Virtual Deduction proof completed automatically by the tools program completeusersproof.cmd, which invokes Mel L. O'Cat's mmj2 and Norm Megill's Metamath Proof Assistant. ssralv2 45458 is ssralv2VD 45792 without virtual deductions and was automatically derived from ssralv2VD 45792.
1:: (   (𝐴 ⊆ 𝐵 ∧ 𝐶 ⊆ 𝐷)   ▶   (𝐴 ⊆ 𝐵 ∧ 𝐶 ⊆ 𝐷)   )
2:: (   (𝐴 ⊆ 𝐵 ∧ 𝐶 ⊆ 𝐷)   ,   ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐷𝜑   ▶   ∀𝑥 ∈ 𝐵∀𝑦 ∈ 𝐷𝜑   )
3:1: (   (𝐴 ⊆ 𝐵 ∧ 𝐶 ⊆ 𝐷)   ▶   𝐴 ⊆ 𝐵   )
4:3,2: (   (𝐴 ⊆ 𝐵 ∧ 𝐶 ⊆ 𝐷)   ,   ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐷𝜑   ▶   ∀𝑥 ∈ 𝐴∀𝑦 ∈ 𝐷𝜑   )
5:4: (   (𝐴 ⊆ 𝐵 ∧ 𝐶 ⊆ 𝐷)   ,   ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐷𝜑   ▶   ∀𝑥(𝑥 ∈ 𝐴 → ∀𝑦 ∈ 𝐷𝜑)   )
6:5: (   (𝐴 ⊆ 𝐵 ∧ 𝐶 ⊆ 𝐷)   ,   ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐷𝜑   ▶   (𝑥 ∈ 𝐴 → ∀𝑦 ∈ 𝐷𝜑)   )
7:: (   (𝐴 ⊆ 𝐵 ∧ 𝐶 ⊆ 𝐷)   ,   ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐷𝜑, 𝑥 ∈ 𝐴   ▶   𝑥 ∈ 𝐴   )
8:7,6: (   (𝐴 ⊆ 𝐵 ∧ 𝐶 ⊆ 𝐷)   ,   ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐷𝜑, 𝑥 ∈ 𝐴   ▶   ∀𝑦 ∈ 𝐷𝜑   )
9:1: (   (𝐴 ⊆ 𝐵 ∧ 𝐶 ⊆ 𝐷)   ▶   𝐶 ⊆ 𝐷   )
10:9,8: (   (𝐴 ⊆ 𝐵 ∧ 𝐶 ⊆ 𝐷)   ,   ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐷𝜑, 𝑥 ∈ 𝐴   ▶   ∀𝑦 ∈ 𝐶𝜑   )
11:10: (   (𝐴 ⊆ 𝐵 ∧ 𝐶 ⊆ 𝐷)   ,   ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐷𝜑   ▶   (𝑥 ∈ 𝐴 → ∀𝑦 ∈ 𝐶𝜑)   )
12:: ((𝐴 ⊆ 𝐵 ∧ 𝐶 ⊆ 𝐷) → ∀𝑥(𝐴 ⊆ 𝐵 ∧ 𝐶 ⊆ 𝐷))
13:: (∀𝑥 ∈ 𝐵∀𝑦 ∈ 𝐷𝜑 → ∀𝑥∀𝑥 ∈ 𝐵∀𝑦 ∈ 𝐷𝜑)
14:12,13,11: (   (𝐴 ⊆ 𝐵 ∧ 𝐶 ⊆ 𝐷)   ,   ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐷𝜑   ▶   ∀𝑥(𝑥 ∈ 𝐴 → ∀𝑦 ∈ 𝐶𝜑)   )
15:14: (   (𝐴 ⊆ 𝐵 ∧ 𝐶 ⊆ 𝐷)   ,   ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐷𝜑   ▶   ∀𝑥 ∈ 𝐴∀𝑦 ∈ 𝐶𝜑   )
16:15: (   (𝐴 ⊆ 𝐵 ∧ 𝐶 ⊆ 𝐷)    ▶   (∀𝑥 ∈ 𝐵∀𝑦 ∈ 𝐷𝜑 → ∀𝑥 ∈ 𝐴∀𝑦 ∈ 𝐶𝜑)   )
qed:16: ((𝐴 ⊆ 𝐵 ∧ 𝐶 ⊆ 𝐷) → (∀𝑥 ∈ 𝐵∀𝑦 ∈ 𝐷𝜑 → ∀𝑥 ∈ 𝐴∀𝑦 ∈ 𝐶𝜑))
(Contributed by Alan Sare, 10-Feb-2012.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝐴 ⊆ 𝐵 ∧ 𝐶 ⊆ 𝐷) → (∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐷 𝜑 → ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐶 𝜑))
 
TheoremordelordALTVD 45793 An element of an ordinal class is ordinal. Proposition 7.6 of [TakeutiZaring] p. 36. This is an alternate proof of ordelord 6373 using the Axiom of Regularity indirectly through dford2 9599. dford2 is a weaker definition of ordinal number. Given the Axiom of Regularity, it need not be assumed that E Fr 𝐴 because this is inferred by the Axiom of Regularity. The following User's Proof is a Virtual Deduction proof completed automatically by the tools program completeusersproof.cmd, which invokes Mel L. O'Cat's mmj2 and Norm Megill's Metamath Proof Assistant. ordelordALT 45464 is ordelordALTVD 45793 without virtual deductions and was automatically derived from ordelordALTVD 45793 using the tools program translate..without..overwriting.cmd and the Metamath program "MM-PA> MINIMIZE_WITH *" command.
1:: (   (Ord 𝐴 ∧ 𝐵 ∈ 𝐴)   ▶   (Ord 𝐴 ∧ 𝐵 ∈ 𝐴)   )
2:1: (   (Ord 𝐴 ∧ 𝐵 ∈ 𝐴)   ▶   Ord 𝐴   )
3:1: (   (Ord 𝐴 ∧ 𝐵 ∈ 𝐴)   ▶   𝐵 ∈ 𝐴   )
4:2: (   (Ord 𝐴 ∧ 𝐵 ∈ 𝐴)   ▶   Tr 𝐴   )
5:2: (   (Ord 𝐴 ∧ 𝐵 ∈ 𝐴)   ▶   ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑥 = 𝑦 ∨ 𝑦 ∈ 𝑥)   )
6:4,3: (   (Ord 𝐴 ∧ 𝐵 ∈ 𝐴)   ▶   𝐵 ⊆ 𝐴   )
7:6,6,5: (   (Ord 𝐴 ∧ 𝐵 ∈ 𝐴)   ▶   ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ 𝐵(𝑥 ∈ 𝑦 ∨ 𝑥 = 𝑦 ∨ 𝑦 ∈ 𝑥)   )
8:: ((𝑥 ∈ 𝑦 ∨ 𝑥 = 𝑦 ∨ 𝑦 ∈ 𝑥) ↔ (𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦))
9:8: ∀𝑦((𝑥 ∈ 𝑦 ∨ 𝑥 = 𝑦 ∨ 𝑦 ∈ 𝑥) ↔ (𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦))
10:9: ∀𝑦 ∈ 𝐴((𝑥 ∈ 𝑦 ∨ 𝑥 = 𝑦 ∨ 𝑦 ∈ 𝑥) ↔ (𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦))
11:10: (∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑥 = 𝑦 ∨ 𝑦 ∈ 𝑥) ↔ ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦))
12:11: ∀𝑥(∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑥 = 𝑦 ∨ 𝑦 ∈ 𝑥) ↔ ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦))
13:12: ∀𝑥 ∈ 𝐴(∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑥 = 𝑦 ∨ 𝑦 ∈ 𝑥) ↔ ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦))
14:13: (∀𝑥 ∈ 𝐴∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑥 = 𝑦 ∨ 𝑦 ∈ 𝑥) ↔ ∀𝑥 ∈ 𝐴∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦))
15:14,5: (   (Ord 𝐴 ∧ 𝐵 ∈ 𝐴)   ▶   ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑦 ∈ 𝑥 ∨ 𝑥 = 𝑦)   )
16:4,15,3: (   (Ord 𝐴 ∧ 𝐵 ∈ 𝐴)   ▶   Tr 𝐵   )
17:16,7: (   (Ord 𝐴 ∧ 𝐵 ∈ 𝐴)   ▶   Ord 𝐵   )
qed:17: ((Ord 𝐴 ∧ 𝐵 ∈ 𝐴) → Ord 𝐵)
(Contributed by Alan Sare, 12-Feb-2012.) (Proof modification is discouraged.) (New usage is discouraged.)
((Ord 𝐴 ∧ 𝐵 ∈ 𝐴) → Ord 𝐵)
 
TheoremequncomVD 45794 If a class equals the union of two other classes, then it equals the union of those two classes commuted. The following User's Proof is a Virtual Deduction proof completed automatically by the tools program completeusersproof.cmd, which invokes Mel L. O'Cat's mmj2 and Norm Megill's Metamath Proof Assistant. equncom 4105 is equncomVD 45794 without virtual deductions and was automatically derived from equncomVD 45794.
1:: (   𝐴 = (𝐵 ∪ 𝐶)   ▶   𝐴 = (𝐵 ∪ 𝐶)   )
2:: (𝐵 ∪ 𝐶) = (𝐶 ∪ 𝐵)
3:1,2: (   𝐴 = (𝐵 ∪ 𝐶)   ▶   𝐴 = (𝐶 ∪ 𝐵)   )
4:3: (𝐴 = (𝐵 ∪ 𝐶) → 𝐴 = (𝐶 ∪ 𝐵))
5:: (   𝐴 = (𝐶 ∪ 𝐵)   ▶   𝐴 = (𝐶 ∪ 𝐵)   )
6:5,2: (   𝐴 = (𝐶 ∪ 𝐵)   ▶   𝐴 = (𝐵 ∪ 𝐶)   )
7:6: (𝐴 = (𝐶 ∪ 𝐵) → 𝐴 = (𝐵 ∪ 𝐶))
8:4,7: (𝐴 = (𝐵 ∪ 𝐶) ↔ 𝐴 = (𝐶 ∪ 𝐵))
(Contributed by Alan Sare, 17-Feb-2012.) (Proof modification is discouraged.) (New usage is discouraged.)
(𝐴 = (𝐵 ∪ 𝐶) ↔ 𝐴 = (𝐶 ∪ 𝐵))
 
TheoremequncomiVD 45795 Inference form of equncom 4105. The following User's Proof is a Virtual Deduction proof completed automatically by the tools program completeusersproof.cmd, which invokes Mel L. O'Cat's mmj2 and Norm Megill's Metamath Proof Assistant. equncomi 4106 is equncomiVD 45795 without virtual deductions and was automatically derived from equncomiVD 45795.
h1:: 𝐴 = (𝐵 ∪ 𝐶)
qed:1: 𝐴 = (𝐶 ∪ 𝐵)
(Contributed by Alan Sare, 18-Feb-2012.) (Proof modification is discouraged.) (New usage is discouraged.)
𝐴 = (𝐵 ∪ 𝐶)    ⇒   𝐴 = (𝐶 ∪ 𝐵)
 
TheoremsucidALTVD 45796 A set belongs to its successor. Alternate proof of sucid 6436. The following User's Proof is a Virtual Deduction proof completed automatically by the tools program completeusersproof.cmd, which invokes Mel L. O'Cat's mmj2 and Norm Megill's Metamath Proof Assistant. sucidALT 45797 is sucidALTVD 45796 without virtual deductions and was automatically derived from sucidALTVD 45796. This proof illustrates that completeusersproof.cmd will generate a Metamath proof from any User's Proof which is "conventional" in the sense that no step is a virtual deduction, provided that all necessary unification theorems and transformation deductions are in set.mm. completeusersproof.cmd automatically converts such a conventional proof into a Virtual Deduction proof for which each step happens to be a 0-virtual hypothesis virtual deduction. The user does not need to search for reference theorem labels or deduction labels nor does he(she) need to use theorems and deductions which unify with reference theorems and deductions in set.mm. All that is necessary is that each theorem or deduction of the User's Proof unifies with some reference theorem or deduction in set.mm or is a semantic variation of some theorem or deduction which unifies with some reference theorem or deduction in set.mm. The definition of "semantic variation" has not been precisely defined. If it is obvious that a theorem or deduction has the same meaning as another theorem or deduction, then it is a semantic variation of the latter theorem or deduction. For example, step 4 of the User's Proof is a semantic variation of the definition (axiom) suc 𝐴 = (𝐴 ∪ {𝐴}), which unifies with df-suc 6357, a reference definition (axiom) in set.mm. Also, a theorem or deduction is said to be a semantic variation of another theorem or deduction if it is obvious upon cursory inspection that it has the same meaning as a weaker form of the latter theorem or deduction. For example, the deduction Ord 𝐴 infers ∀𝑥 ∈ 𝐴∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑥 = 𝑦 ∨ 𝑦 ∈ 𝑥) is a semantic variation of the theorem (Ord 𝐴 ↔ (Tr 𝐴 ∧ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐴(𝑥 ∈ 𝑦 ∨ 𝑥 = 𝑦 ∨ 𝑦 ∈ 𝑥))), which unifies with the set.mm reference definition (axiom) dford2 9599.
h1:: 𝐴 ∈ V
2:1: 𝐴 ∈ {𝐴}
3:2: 𝐴 ∈ ({𝐴} ∪ 𝐴)
4:: suc 𝐴 = ({𝐴} ∪ 𝐴)
qed:3,4: 𝐴 ∈ suc 𝐴
(Contributed by Alan Sare, 18-Feb-2012.) (Proof modification is discouraged.) (New usage is discouraged.)
𝐴 ∈ V    ⇒   𝐴 ∈ suc 𝐴
 
TheoremsucidALT 45797 A set belongs to its successor. This proof was automatically derived from sucidALTVD 45796 using translate_without_overwriting.cmd and minimizing. (Contributed by Alan Sare, 18-Feb-2012.) (Proof modification is discouraged.) (New usage is discouraged.)
𝐴 ∈ V    ⇒   𝐴 ∈ suc 𝐴
 
TheoremsucidVD 45798 A set belongs to its successor. The following User's Proof is a Virtual Deduction proof completed automatically by the tools program completeusersproof.cmd, which invokes Mel L. O'Cat's mmj2 and Norm Megill's Metamath Proof Assistant. sucid 6436 is sucidVD 45798 without virtual deductions and was automatically derived from sucidVD 45798.
h1:: 𝐴 ∈ V
2:1: 𝐴 ∈ {𝐴}
3:2: 𝐴 ∈ (𝐴 ∪ {𝐴})
4:: suc 𝐴 = (𝐴 ∪ {𝐴})
qed:3,4: 𝐴 ∈ suc 𝐴
(Contributed by Alan Sare, 18-Feb-2012.) (Proof modification is discouraged.) (New usage is discouraged.)
𝐴 ∈ V    ⇒   𝐴 ∈ suc 𝐴
 
Theoremimbi12VD 45799 Implication form of imbi12i 353. The following User's Proof is a Virtual Deduction proof completed automatically by the tools program completeusersproof.cmd, which invokes Mel L. O'Cat's mmj2 and Norm Megill's Metamath Proof Assistant. imbi12 349 is imbi12VD 45799 without virtual deductions and was automatically derived from imbi12VD 45799.
1:: (   (𝜑 ↔ 𝜓)   ▶   (𝜑 ↔ 𝜓)   )
2:: (   (𝜑 ↔ 𝜓)   ,   (𝜒 ↔ 𝜃)    ▶   (𝜒 ↔ 𝜃)   )
3:: (   (𝜑 ↔ 𝜓)   ,   (𝜒 ↔ 𝜃)   ,   (𝜑 → 𝜒)   ▶   (𝜑 → 𝜒)   )
4:1,3: (   (𝜑 ↔ 𝜓)   ,   (𝜒 ↔ 𝜃)   ,   (𝜑 → 𝜒)   ▶   (𝜓 → 𝜒)   )
5:2,4: (   (𝜑 ↔ 𝜓)   ,   (𝜒 ↔ 𝜃)   ,   (𝜑 → 𝜒)   ▶   (𝜓 → 𝜃)   )
6:5: (   (𝜑 ↔ 𝜓)   ,   (𝜒 ↔ 𝜃)    ▶   ((𝜑 → 𝜒) → (𝜓 → 𝜃))   )
7:: (   (𝜑 ↔ 𝜓)   ,   (𝜒 ↔ 𝜃)   ,   (𝜓 → 𝜃)   ▶   (𝜓 → 𝜃)   )
8:1,7: (   (𝜑 ↔ 𝜓)   ,   (𝜒 ↔ 𝜃)   ,   (𝜓 → 𝜃)   ▶   (𝜑 → 𝜃)   )
9:2,8: (   (𝜑 ↔ 𝜓)   ,   (𝜒 ↔ 𝜃)   ,   (𝜓 → 𝜃)   ▶   (𝜑 → 𝜒)   )
10:9: (   (𝜑 ↔ 𝜓)   ,   (𝜒 ↔ 𝜃)    ▶   ((𝜓 → 𝜃) → (𝜑 → 𝜒))   )
11:6,10: (   (𝜑 ↔ 𝜓)   ,   (𝜒 ↔ 𝜃)    ▶   ((𝜑 → 𝜒) ↔ (𝜓 → 𝜃))   )
12:11: (   (𝜑 ↔ 𝜓)   ▶   ((𝜒 ↔ 𝜃) → ((𝜑 → 𝜒) ↔ (𝜓 → 𝜃)))   )
qed:12: ((𝜑 ↔ 𝜓) → ((𝜒 ↔ 𝜃) → ((𝜑 → 𝜒) ↔ (𝜓 → 𝜃))))
(Contributed by Alan Sare, 18-Mar-2012.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝜑 ↔ 𝜓) → ((𝜒 ↔ 𝜃) → ((𝜑 → 𝜒) ↔ (𝜓 → 𝜃))))
 
Theoremimbi13VD 45800 Join three logical equivalences to form equivalence of implications. The following User's Proof is a Virtual Deduction proof completed automatically by the tools program completeusersproof.cmd, which invokes Mel L. O'Cat's mmj2 and Norm Megill's Metamath Proof Assistant. imbi13 45447 is imbi13VD 45800 without virtual deductions and was automatically derived from imbi13VD 45800.
1:: (   (𝜑 ↔ 𝜓)   ▶   (𝜑 ↔ 𝜓)   )
2:: (   (𝜑 ↔ 𝜓)   ,   (𝜒 ↔ 𝜃)    ▶   (𝜒 ↔ 𝜃)   )
3:: (   (𝜑 ↔ 𝜓)   ,   (𝜒 ↔ 𝜃)   ,   (𝜏 ↔ 𝜂)   ▶   (𝜏 ↔ 𝜂)   )
4:2,3: (   (𝜑 ↔ 𝜓)   ,   (𝜒 ↔ 𝜃)   ,   (𝜏 ↔ 𝜂)   ▶   ((𝜒 → 𝜏) ↔ (𝜃 → 𝜂))   )
5:1,4: (   (𝜑 ↔ 𝜓)   ,   (𝜒 ↔ 𝜃)   ,   (𝜏 ↔ 𝜂)   ▶   ((𝜑 → (𝜒 → 𝜏)) ↔ (𝜓 → (𝜃 → 𝜂)))   )
6:5: (   (𝜑 ↔ 𝜓)   ,   (𝜒 ↔ 𝜃)    ▶   ((𝜏 ↔ 𝜂) → ((𝜑 → (𝜒 → 𝜏)) ↔ (𝜓 → (𝜃 → 𝜂))))   )
7:6: (   (𝜑 ↔ 𝜓)   ▶   ((𝜒 ↔ 𝜃) → ((𝜏 ↔ 𝜂) → ((𝜑 → (𝜒 → 𝜏)) ↔ (𝜓 → (𝜃 → 𝜂)))))   )
qed:7: ((𝜑 ↔ 𝜓) → ((𝜒 ↔ 𝜃) → ((𝜏 ↔ 𝜂) → ((𝜑 → (𝜒 → 𝜏)) ↔ (𝜓 → (𝜃 → 𝜂))))))
(Contributed by Alan Sare, 18-Mar-2012.) (Proof modification is discouraged.) (New usage is discouraged.)
((𝜑 ↔ 𝜓) → ((𝜒 ↔ 𝜃) → ((𝜏 ↔ 𝜂) → ((𝜑 → (𝜒 → 𝜏)) ↔ (𝜓 → (𝜃 → 𝜂))))))
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