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| Mirrors > Home > MPE Home > Th. List > feq3d | Structured version Visualization version GIF version | ||
| Description: Equality deduction for functions. (Contributed by AV, 1-Jan-2020.) |
| Ref | Expression |
|---|---|
| feq2d.1 | ⊢ (𝜑 → 𝐴 = 𝐵) |
| Ref | Expression |
|---|---|
| feq3d | ⊢ (𝜑 → (𝐹:𝑋⟶𝐴 ↔ 𝐹:𝑋⟶𝐵)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | feq2d.1 | . 2 ⊢ (𝜑 → 𝐴 = 𝐵) | |
| 2 | feq3 6648 | . 2 ⊢ (𝐴 = 𝐵 → (𝐹:𝑋⟶𝐴 ↔ 𝐹:𝑋⟶𝐵)) | |
| 3 | 1, 2 | syl 17 | 1 ⊢ (𝜑 → (𝐹:𝑋⟶𝐴 ↔ 𝐹:𝑋⟶𝐵)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 = wceq 1542 ⟶wf 6494 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-9 2124 ax-ext 2708 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1782 df-cleq 2728 df-ss 3906 df-f 6502 |
| This theorem is referenced by: feq3dd 6655 feq123d 6657 fsn2 7089 fsng 7090 fsnunf 7140 funcres2b 17864 funcres2 17865 funcres2c 17870 catciso 18078 hofcl 18225 yonedalem4c 18243 yonedalem3b 18245 yonedainv 18247 gsumress 18650 resmgmhm2b 18681 resmhm2b 18790 pwsdiagmhm 18799 frmdup3lem 18834 frmdup3 18835 isghmOLD 19191 frgpup3lem 19752 gsumzsubmcl 19893 dmdprd 19975 zrtermorngc 20620 zrtermoringc 20652 imadrhmcl 20774 rngqiprngghm 21297 frlmup2 21779 evlsvvval 22071 scmatghm 22498 scmatmhm 22499 mdetdiaglem 22563 cnpf2 23215 2ndcctbss 23420 1stcelcls 23426 uptx 23590 txcn 23591 tsmssubm 24108 cnextucn 24267 pi1addf 25014 caufval 25242 equivcau 25267 lmcau 25280 plypf1 26177 coef2 26196 ulmval 26345 uhgr0vb 29141 uhgrun 29143 uhgrstrrepe 29147 isumgrs 29165 upgrun 29187 umgrun 29189 wksfval 29678 wlkres 29737 ajfval 30880 chscllem4 31711 rlocf1 33334 imasmhm 33414 imasghm 33415 imasrhm 33416 lindfpropd 33442 ply1degltdimlem 33766 fedgmullem1 33773 rrhf 34142 sibff 34480 sibfof 34484 orvcval4 34605 bj-finsumval0 37599 matunitlindflem2 37938 poimirlem9 37950 isbnd3 38105 prdsbnd 38114 heibor 38142 elghomlem1OLD 38206 aks6d1c6lem2 42610 aks6d1c6lem3 42611 aks6d1c6isolem2 42614 aks6d1c6lem5 42616 cnfsmf 47168 upwlksfval 48611 |
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