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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 1542 ⟶wf 6488 |
| 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 2709 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-ex 1782 df-cleq 2729 df-ss 3907 df-f 6496 |
| This theorem is referenced by: feq3dd 6649 feq123d 6651 fsn2 7083 fsng 7084 fsnunf 7133 funcres2b 17855 funcres2 17856 funcres2c 17861 catciso 18069 hofcl 18216 yonedalem4c 18234 yonedalem3b 18236 yonedainv 18238 gsumress 18641 resmgmhm2b 18672 resmhm2b 18781 pwsdiagmhm 18790 frmdup3lem 18825 frmdup3 18826 isghmOLD 19182 frgpup3lem 19743 gsumzsubmcl 19884 dmdprd 19966 zrtermorngc 20611 zrtermoringc 20643 imadrhmcl 20765 rngqiprngghm 21289 frlmup2 21789 evlsvvval 22081 scmatghm 22508 scmatmhm 22509 mdetdiaglem 22573 cnpf2 23225 2ndcctbss 23430 1stcelcls 23436 uptx 23600 txcn 23601 tsmssubm 24118 cnextucn 24277 pi1addf 25024 caufval 25252 equivcau 25277 lmcau 25290 plypf1 26187 coef2 26206 ulmval 26358 uhgr0vb 29155 uhgrun 29157 uhgrstrrepe 29161 isumgrs 29179 upgrun 29201 umgrun 29203 wksfval 29693 wlkres 29752 ajfval 30895 chscllem4 31726 rlocf1 33349 imasmhm 33429 imasghm 33430 imasrhm 33431 lindfpropd 33457 ply1degltdimlem 33782 fedgmullem1 33789 rrhf 34158 sibff 34496 sibfof 34500 orvcval4 34621 bj-finsumval0 37615 matunitlindflem2 37952 poimirlem9 37964 isbnd3 38119 prdsbnd 38128 heibor 38156 elghomlem1OLD 38220 aks6d1c6lem2 42624 aks6d1c6lem3 42625 aks6d1c6isolem2 42628 aks6d1c6lem5 42630 cnfsmf 47186 upwlksfval 48623 |
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