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Mirrors > Home > MPE Home > Th. List > fnopfvb | Structured version Visualization version GIF version |
Description: Equivalence of function value and ordered pair membership. (Contributed by NM, 7-Nov-1995.) |
Ref | Expression |
---|---|
fnopfvb | ⊢ ((𝐹 Fn 𝐴 ∧ 𝐵 ∈ 𝐴) → ((𝐹‘𝐵) = 𝐶 ↔ 〈𝐵, 𝐶〉 ∈ 𝐹)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | fnbrfvb 6949 | . 2 ⊢ ((𝐹 Fn 𝐴 ∧ 𝐵 ∈ 𝐴) → ((𝐹‘𝐵) = 𝐶 ↔ 𝐵𝐹𝐶)) | |
2 | df-br 5150 | . 2 ⊢ (𝐵𝐹𝐶 ↔ 〈𝐵, 𝐶〉 ∈ 𝐹) | |
3 | 1, 2 | bitrdi 286 | 1 ⊢ ((𝐹 Fn 𝐴 ∧ 𝐵 ∈ 𝐴) → ((𝐹‘𝐵) = 𝐶 ↔ 〈𝐵, 𝐶〉 ∈ 𝐹)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 394 = wceq 1533 ∈ wcel 2098 〈cop 4636 class class class wbr 5149 Fn wfn 6544 ‘cfv 6549 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-12 2166 ax-ext 2696 ax-sep 5300 ax-nul 5307 ax-pr 5429 |
This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2528 df-eu 2557 df-clab 2703 df-cleq 2717 df-clel 2802 df-ne 2930 df-ral 3051 df-rex 3060 df-rab 3419 df-v 3463 df-dif 3947 df-un 3949 df-ss 3961 df-nul 4323 df-if 4531 df-sn 4631 df-pr 4633 df-op 4637 df-uni 4910 df-br 5150 df-opab 5212 df-id 5576 df-xp 5684 df-rel 5685 df-cnv 5686 df-co 5687 df-dm 5688 df-iota 6501 df-fun 6551 df-fn 6552 df-fv 6557 |
This theorem is referenced by: funopfvb 6952 fdmeu 6954 fvopab3g 6999 f1ofveu 7413 ovid 7562 ov 7565 ovg 7586 funelss 8052 wfrlem14OLD 8343 tfrlem11 8409 rdglim2 8453 tz7.48-1 8464 mdetunilem9 22566 tfsconcatfv2 42911 |
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