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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 6891 | . . 3 ⊢ (◡𝐹‘𝐵) ∈ V | |
| 5 | 1, 2, 3, 4 | brpermmodel 45826 | . 2 ⊢ (𝐴𝑅(◡𝐹‘𝐵) ↔ 𝐴 ∈ (𝐹‘(◡𝐹‘𝐵))) |
| 6 | brpermmodel.4 | . . . 4 ⊢ 𝐵 ∈ V | |
| 7 | f1ocnvfv2 7278 | . . . 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 1570 ∈ wcel 2145 Vcvv 3450 class class class wbr 5103 E cep 5554 ◡ccnv 5654 ∘ ccom 5659 –1-1-onto→wf1o 6532 ‘cfv 6533 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-sep 5251 ax-nul 5263 ax-pr 5398 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 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-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4280 df-if 4483 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-opab 5168 df-id 5550 df-eprel 5555 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-iota 6489 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 |
| This theorem is used by: permaxsep 45830 permaxnul 45831 permaxpow 45832 permaxpr 45833 permaxun 45834 permaxinf2lem 45835 permac8prim 45837 |
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