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| Mirrors > Home > MPE Home > Th. List > Mathboxes > fnopafv2b | Structured version Visualization version GIF version | ||
| Description: Equivalence of function value and ordered pair membership, analogous to fnopfvb 6927. (Contributed by AV, 6-Sep-2022.) |
| Ref | Expression |
|---|---|
| fnopafv2b | ⊢ ((𝐹 Fn 𝐴 ∧ 𝐵 ∈ 𝐴) → ((𝐹''''𝐵) = 𝐶 ↔ 〈𝐵, 𝐶〉 ∈ 𝐹)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fnbrafv2b 47213 | . 2 ⊢ ((𝐹 Fn 𝐴 ∧ 𝐵 ∈ 𝐴) → ((𝐹''''𝐵) = 𝐶 ↔ 𝐵𝐹𝐶)) | |
| 2 | df-br 5118 | . 2 ⊢ (𝐵𝐹𝐶 ↔ 〈𝐵, 𝐶〉 ∈ 𝐹) | |
| 3 | 1, 2 | bitrdi 287 | 1 ⊢ ((𝐹 Fn 𝐴 ∧ 𝐵 ∈ 𝐴) → ((𝐹''''𝐵) = 𝐶 ↔ 〈𝐵, 𝐶〉 ∈ 𝐹)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1539 ∈ wcel 2107 〈cop 4605 class class class wbr 5117 Fn wfn 6523 ''''cafv2 47173 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1794 ax-4 1808 ax-5 1909 ax-6 1966 ax-7 2006 ax-8 2109 ax-9 2117 ax-10 2140 ax-11 2156 ax-12 2176 ax-ext 2706 ax-sep 5264 ax-nul 5274 ax-pow 5333 ax-pr 5400 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1779 df-nf 1783 df-sb 2064 df-mo 2538 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2808 df-nfc 2884 df-ne 2932 df-ral 3051 df-rex 3060 df-rab 3414 df-v 3459 df-dif 3927 df-un 3929 df-in 3931 df-ss 3941 df-nul 4307 df-if 4499 df-sn 4600 df-pr 4602 df-op 4606 df-uni 4882 df-br 5118 df-opab 5180 df-id 5546 df-xp 5658 df-rel 5659 df-cnv 5660 df-co 5661 df-dm 5662 df-res 5664 df-iota 6481 df-fun 6530 df-fn 6531 df-dfat 47084 df-afv2 47174 |
| This theorem is referenced by: funopafv2b 47216 |
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