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Mathbox for Jonathan Ben-Naim |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > bnj556 | Structured version Visualization version GIF version |
Description: Technical lemma for bnj852 31872. This lemma may no longer be used or have become an indirect lemma of the theorem in question (i.e. a lemma of a lemma... of the theorem). (Contributed by Jonathan Ben-Naim, 3-Jun-2011.) (New usage is discouraged.) |
Ref | Expression |
---|---|
bnj556.18 | ⊢ (𝜎 ↔ (𝑚 ∈ 𝐷 ∧ 𝑛 = suc 𝑚 ∧ 𝑝 ∈ 𝑚)) |
bnj556.19 | ⊢ (𝜂 ↔ (𝑚 ∈ 𝐷 ∧ 𝑛 = suc 𝑚 ∧ 𝑝 ∈ ω ∧ 𝑚 = suc 𝑝)) |
Ref | Expression |
---|---|
bnj556 | ⊢ (𝜂 → 𝜎) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | vex 3420 | . . . . 5 ⊢ 𝑝 ∈ V | |
2 | 1 | bnj216 31682 | . . . 4 ⊢ (𝑚 = suc 𝑝 → 𝑝 ∈ 𝑚) |
3 | 2 | 3anim3i 1135 | . . 3 ⊢ ((𝑚 ∈ 𝐷 ∧ 𝑛 = suc 𝑚 ∧ 𝑚 = suc 𝑝) → (𝑚 ∈ 𝐷 ∧ 𝑛 = suc 𝑚 ∧ 𝑝 ∈ 𝑚)) |
4 | 3 | adantr 473 | . 2 ⊢ (((𝑚 ∈ 𝐷 ∧ 𝑛 = suc 𝑚 ∧ 𝑚 = suc 𝑝) ∧ 𝑝 ∈ ω) → (𝑚 ∈ 𝐷 ∧ 𝑛 = suc 𝑚 ∧ 𝑝 ∈ 𝑚)) |
5 | bnj556.19 | . . 3 ⊢ (𝜂 ↔ (𝑚 ∈ 𝐷 ∧ 𝑛 = suc 𝑚 ∧ 𝑝 ∈ ω ∧ 𝑚 = suc 𝑝)) | |
6 | bnj258 31658 | . . 3 ⊢ ((𝑚 ∈ 𝐷 ∧ 𝑛 = suc 𝑚 ∧ 𝑝 ∈ ω ∧ 𝑚 = suc 𝑝) ↔ ((𝑚 ∈ 𝐷 ∧ 𝑛 = suc 𝑚 ∧ 𝑚 = suc 𝑝) ∧ 𝑝 ∈ ω)) | |
7 | 5, 6 | bitri 267 | . 2 ⊢ (𝜂 ↔ ((𝑚 ∈ 𝐷 ∧ 𝑛 = suc 𝑚 ∧ 𝑚 = suc 𝑝) ∧ 𝑝 ∈ ω)) |
8 | bnj556.18 | . 2 ⊢ (𝜎 ↔ (𝑚 ∈ 𝐷 ∧ 𝑛 = suc 𝑚 ∧ 𝑝 ∈ 𝑚)) | |
9 | 4, 7, 8 | 3imtr4i 284 | 1 ⊢ (𝜂 → 𝜎) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 198 ∧ wa 387 ∧ w3a 1069 = wceq 1508 ∈ wcel 2051 suc csuc 6036 ωcom 7402 ∧ w-bnj17 31636 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1759 ax-4 1773 ax-5 1870 ax-6 1929 ax-7 1966 ax-8 2053 ax-9 2060 ax-10 2080 ax-11 2094 ax-12 2107 ax-ext 2752 |
This theorem depends on definitions: df-bi 199 df-an 388 df-or 835 df-3an 1071 df-tru 1511 df-ex 1744 df-nf 1748 df-sb 2017 df-clab 2761 df-cleq 2773 df-clel 2848 df-nfc 2920 df-v 3419 df-un 3836 df-sn 4445 df-suc 6040 df-bnj17 31637 |
This theorem is referenced by: bnj557 31852 bnj561 31854 bnj562 31855 |
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