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| Mirrors > Home > MPE Home > Th. List > funbrfvb | Structured version Visualization version GIF version | ||
| Description: Equivalence of function value and binary relation. (Contributed by NM, 26-Mar-2006.) |
| Ref | Expression |
|---|---|
| funbrfvb | ⊢ ((Fun 𝐹 ∧ 𝐴 ∈ dom 𝐹) → ((𝐹‘𝐴) = 𝐵 ↔ 𝐴𝐹𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | funfn 6545 | . 2 ⊢ (Fun 𝐹 ↔ 𝐹 Fn dom 𝐹) | |
| 2 | fnbrfvb 6911 | . 2 ⊢ ((𝐹 Fn dom 𝐹 ∧ 𝐴 ∈ dom 𝐹) → ((𝐹‘𝐴) = 𝐵 ↔ 𝐴𝐹𝐵)) | |
| 3 | 1, 2 | sylanb 590 | 1 ⊢ ((Fun 𝐹 ∧ 𝐴 ∈ dom 𝐹) → ((𝐹‘𝐴) = 𝐵 ↔ 𝐴𝐹𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 208 ∧ wa 399 = wceq 1559 ∈ wcel 2141 class class class wbr 5097 dom cdm 5643 Fun wfun 6509 Fn wfn 6510 ‘cfv 6515 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-12 2211 ax-ext 2733 ax-sep 5243 ax-nul 5253 ax-pr 5387 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-ne 2957 df-ral 3076 df-rex 3086 df-rab 3414 df-v 3455 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4284 df-if 4478 df-sn 4580 df-pr 4582 df-op 4586 df-uni 4863 df-br 5098 df-opab 5160 df-id 5538 df-xp 5649 df-rel 5650 df-cnv 5651 df-co 5652 df-dm 5653 df-iota 6471 df-fun 6517 df-fn 6518 df-fv 6523 |
| This theorem is referenced by: funbrfv2b 6918 dfimafn 6923 funimass4 6925 funcnvmpt 6971 eqfunresadj 7338 dcomex 10397 dvidlem 25964 taylthlem1 26423 dfimafnf 32798 cantnf2 43862 frege124d 44297 frege129d 44299 ntrclsfv1 44591 ntrneifv1 44615 ntrneifv2 44616 |
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