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| Mirrors > Home > MPE Home > Th. List > 2ralbii | Structured version Visualization version GIF version | ||
| Description: Inference adding two restricted universal quantifiers to both sides of an equivalence. (Contributed by NM, 1-Aug-2004.) |
| Ref | Expression |
|---|---|
| 2ralbii.1 | ⊢ (𝜑 ↔ 𝜓) |
| Ref | Expression |
|---|---|
| 2ralbii | ⊢ (∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜑 ↔ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜓) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 2ralbii.1 | . . 3 ⊢ (𝜑 ↔ 𝜓) | |
| 2 | 1 | ralbii 3085 | . 2 ⊢ (∀𝑦 ∈ 𝐵 𝜑 ↔ ∀𝑦 ∈ 𝐵 𝜓) |
| 3 | 2 | ralbii 3085 | 1 ⊢ (∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜑 ↔ ∀𝑥 ∈ 𝐴 ∀𝑦 ∈ 𝐵 𝜓) |
| Colors of variables: wff setvar class |
| Syntax hints: ↔ wb 207 ∀wral 3053 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 |
| This theorem depends on definitions: df-bi 208 df-ral 3054 |
| This theorem is referenced by: 3ralbii 3116 ralnex3 3120 rmo4f 3676 2reu4lem 4451 cnvso 6239 fununi 6560 dff14a 7214 isocnv2 7275 f1opr 7412 sorpss 7671 xpord3inddlem 8094 tpossym 8198 dford2 9532 isffth2 17876 ispos2 18272 issubmgm 18661 issubm 18762 cntzrec 19302 oppgsubm 19328 opprirred 20393 opprsubrng 20531 rhmimasubrng 20538 cntzsubrng 20539 opprsubrg 20565 isdomn5 20682 isdomn3 20687 gsummatr01lem3 22640 gsummatr01 22642 isbasis2g 22931 ist0-3 23328 isfbas2 23818 isclmp 25082 addsproplem4 27982 addsproplem6 27984 addsprop 27986 negsproplem4 28041 negsproplem6 28043 negsprop 28045 mulsprop 28140 dfadj2 31974 adjval2 31980 cnlnadjeui 32166 adjbdln 32172 isarchi 33263 prmidl0 33533 ply1dg3rt0irred 33667 dff15 35265 iccllysconn 35478 dfso3 35948 elpotr 36007 dfon2 36018 idinxpss 38685 inxpssidinxp 38689 idinxpssinxp 38690 dfdisjALTV5a 39170 dfeldisj5 39180 dfeldisj5a 39181 isltrn2N 40612 hashnexinj 42613 fphpd 43261 fiinfi 44017 ntrk1k3eqk13 44494 ordelordALT 44981 dfac5prim 45434 disjinfi 45639 isthinc2 49910 isthinc3 49911 |
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