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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 6642 | . 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 1541 ⟶wf 6488 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-9 2123 ax-ext 2708 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1781 df-cleq 2728 df-ss 3918 df-f 6496 |
| This theorem is referenced by: feq3dd 6649 feq123d 6651 fsn2 7081 fsng 7082 fsnunf 7131 funcres2b 17821 funcres2 17822 funcres2c 17827 catciso 18035 hofcl 18182 yonedalem4c 18200 yonedalem3b 18202 yonedainv 18204 gsumress 18607 resmgmhm2b 18638 resmhm2b 18747 pwsdiagmhm 18756 frmdup3lem 18791 frmdup3 18792 isghmOLD 19145 frgpup3lem 19706 gsumzsubmcl 19847 dmdprd 19929 zrtermorngc 20576 zrtermoringc 20608 imadrhmcl 20730 rngqiprngghm 21254 frlmup2 21754 evlsvvval 22048 scmatghm 22477 scmatmhm 22478 mdetdiaglem 22542 cnpf2 23194 2ndcctbss 23399 1stcelcls 23405 uptx 23569 txcn 23570 tsmssubm 24087 cnextucn 24246 pi1addf 25003 caufval 25231 equivcau 25256 lmcau 25269 plypf1 26173 coef2 26192 ulmval 26345 uhgr0vb 29145 uhgrun 29147 uhgrstrrepe 29151 isumgrs 29169 upgrun 29191 umgrun 29193 wksfval 29683 wlkres 29742 ajfval 30884 chscllem4 31715 rlocf1 33355 imasmhm 33435 imasghm 33436 imasrhm 33437 lindfpropd 33463 ply1degltdimlem 33779 fedgmullem1 33786 rrhf 34155 sibff 34493 sibfof 34497 orvcval4 34618 bj-finsumval0 37486 matunitlindflem2 37814 poimirlem9 37826 isbnd3 37981 prdsbnd 37990 heibor 38018 elghomlem1OLD 38082 aks6d1c6lem2 42421 aks6d1c6lem3 42422 aks6d1c6isolem2 42425 aks6d1c6lem5 42427 cnfsmf 46980 upwlksfval 48377 |
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