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| Mirrors > Home > MPE Home > Th. List > Mathboxes > brpermmodelcnv | Structured version Visualization version GIF version | ||
| Description: Ordinary membership expressed in terms of the permutation model's membership relation. (Contributed by Eric Schmidt, 6-Nov-2025.) |
| Ref | Expression |
|---|---|
| permmodel.1 | ⊢ 𝐹:V–1-1-onto→V |
| permmodel.2 | ⊢ 𝑅 = (◡𝐹 ∘ E ) |
| brpermmodel.3 | ⊢ 𝐴 ∈ V |
| brpermmodel.4 | ⊢ 𝐵 ∈ V |
| Ref | Expression |
|---|---|
| brpermmodelcnv | ⊢ (𝐴𝑅(◡𝐹‘𝐵) ↔ 𝐴 ∈ 𝐵) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | permmodel.1 | . . 3 ⊢ 𝐹:V–1-1-onto→V | |
| 2 | permmodel.2 | . . 3 ⊢ 𝑅 = (◡𝐹 ∘ E ) | |
| 3 | brpermmodel.3 | . . 3 ⊢ 𝐴 ∈ V | |
| 4 | fvex 6903 | . . 3 ⊢ (◡𝐹‘𝐵) ∈ V | |
| 5 | 1, 2, 3, 4 | brpermmodel 46101 | . 2 ⊢ (𝐴𝑅(◡𝐹‘𝐵) ↔ 𝐴 ∈ (𝐹‘(◡𝐹‘𝐵))) |
| 6 | brpermmodel.4 | . . . 4 ⊢ 𝐵 ∈ V | |
| 7 | f1ocnvfv2 7289 | . . . 4 ⊢ ((𝐹:V–1-1-onto→V ∧ 𝐵 ∈ V) → (𝐹‘(◡𝐹‘𝐵)) = 𝐵) | |
| 8 | 1, 6, 7 | mp2an 705 | . . 3 ⊢ (𝐹‘(◡𝐹‘𝐵)) = 𝐵 |
| 9 | 8 | eleq2i 2852 | . 2 ⊢ (𝐴 ∈ (𝐹‘(◡𝐹‘𝐵)) ↔ 𝐴 ∈ 𝐵) |
| 10 | 5, 9 | bitri 278 | 1 ⊢ (𝐴𝑅(◡𝐹‘𝐵) ↔ 𝐴 ∈ 𝐵) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ↔ wb 209 = wceq 1569 ∈ wcel 2144 Vcvv 3450 class class class wbr 5102 E cep 5550 ◡ccnv 5650 ∘ ccom 5655 –1-1-onto→wf1o 6542 ‘cfv 6543 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pr 5391 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 df-mo 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-ne 2956 df-ral 3077 df-rex 3087 df-rab 3413 df-v 3452 df-ss 3897 df-dif 4046 df-in 4090 df-un 4150 df-nul 4278 df-if 4482 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-br 5103 df-opab 5167 df-id 5546 df-eprel 5551 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-iota 6497 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 |
| This theorem is used by: permaxsep 46105 permaxnul 46106 permaxpow 46107 permaxpr 46108 permaxun 46109 permaxinf2lem 46110 permac8prim 46112 |
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