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| Mirrors > Home > MPE Home > Th. List > feq12d | Structured version Visualization version GIF version | ||
| Description: Equality deduction for functions. (Contributed by Paul Chapman, 22-Jun-2011.) |
| Ref | Expression |
|---|---|
| feq12d.1 | ⊢ (𝜑 → 𝐹 = 𝐺) |
| feq12d.2 | ⊢ (𝜑 → 𝐴 = 𝐵) |
| Ref | Expression |
|---|---|
| feq12d | ⊢ (𝜑 → (𝐹:𝐴⟶𝐶 ↔ 𝐺:𝐵⟶𝐶)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | feq12d.1 | . . 3 ⊢ (𝜑 → 𝐹 = 𝐺) | |
| 2 | 1 | feq1d 6672 | . 2 ⊢ (𝜑 → (𝐹:𝐴⟶𝐶 ↔ 𝐺:𝐴⟶𝐶)) |
| 3 | feq12d.2 | . . 3 ⊢ (𝜑 → 𝐴 = 𝐵) | |
| 4 | 3 | feq2d 6674 | . 2 ⊢ (𝜑 → (𝐺:𝐴⟶𝐶 ↔ 𝐺:𝐵⟶𝐶)) |
| 5 | 2, 4 | bitrd 279 | 1 ⊢ (𝜑 → (𝐹:𝐴⟶𝐶 ↔ 𝐺:𝐵⟶𝐶)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 = wceq 1540 ⟶wf 6509 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-ext 2702 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-sb 2066 df-clab 2709 df-cleq 2722 df-clel 2804 df-rab 3409 df-v 3452 df-dif 3919 df-un 3921 df-ss 3933 df-nul 4299 df-if 4491 df-sn 4592 df-pr 4594 df-op 4598 df-br 5110 df-opab 5172 df-rel 5647 df-cnv 5648 df-co 5649 df-dm 5650 df-rn 5651 df-fun 6515 df-fn 6516 df-f 6517 |
| This theorem is referenced by: feq123d 6679 fprg 7129 smoeq 8321 oif 9489 1fv 13614 catcisolem 18078 hofcl 18226 dmdprd 19936 dpjf 19995 pjf2 21629 mat1dimmul 22369 lmbr2 23152 lmff 23194 dfac14 23511 lmmbr2 25165 lmcau 25219 perfdvf 25810 dvnfre 25862 dvle 25918 dvfsumle 25932 dvfsumleOLD 25933 dvfsumge 25934 dvmptrecl 25936 uhgr0e 29004 uhgrstrrepe 29011 incistruhgr 29012 upgr1e 29046 1hevtxdg1 29440 umgr2v2e 29459 iswlk 29544 0wlkons1 30056 resf1o 32659 ismeas 34195 omsmeas 34320 breprexplema 34627 satfun 35398 mbfresfi 37655 sdclem1 37732 dfac21 43048 fnlimfvre 45665 climrescn 45739 fourierdlem74 46171 fourierdlem103 46200 fourierdlem104 46201 sge0iunmpt 46409 ismea 46442 isome 46485 sssmf 46729 smflimlem3 46764 smflimlem4 46765 isupwlk 48114 fmpodg 48845 fucof1 49293 |
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