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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 6644 | . 2 ⊢ (𝜑 → (𝐹:𝐴⟶𝐶 ↔ 𝐺:𝐴⟶𝐶)) |
| 3 | feq12d.2 | . . 3 ⊢ (𝜑 → 𝐴 = 𝐵) | |
| 4 | 3 | feq2d 6646 | . 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 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-8 2115 ax-9 2123 ax-ext 2708 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-sb 2068 df-clab 2715 df-cleq 2728 df-clel 2811 df-rab 3400 df-v 3442 df-dif 3904 df-un 3906 df-ss 3918 df-nul 4286 df-if 4480 df-sn 4581 df-pr 4583 df-op 4587 df-br 5099 df-opab 5161 df-rel 5631 df-cnv 5632 df-co 5633 df-dm 5634 df-rn 5635 df-fun 6494 df-fn 6495 df-f 6496 |
| This theorem is referenced by: feq123d 6651 fprg 7100 smoeq 8282 oif 9435 1fv 13563 catcisolem 18034 hofcl 18182 dmdprd 19929 dpjf 19988 pjf2 21669 mat1dimmul 22420 lmbr2 23203 lmff 23245 dfac14 23562 lmmbr2 25215 lmcau 25269 perfdvf 25860 dvnfre 25912 dvle 25968 dvfsumle 25982 dvfsumleOLD 25983 dvfsumge 25984 dvmptrecl 25986 uhgr0e 29144 uhgrstrrepe 29151 incistruhgr 29152 upgr1e 29186 1hevtxdg1 29580 umgr2v2e 29599 iswlk 29684 0wlkons1 30196 resf1o 32809 ismeas 34356 omsmeas 34480 breprexplema 34787 satfun 35605 mbfresfi 37863 sdclem1 37940 dfac21 43304 fnlimfvre 45914 climrescn 45988 fourierdlem74 46420 fourierdlem103 46449 fourierdlem104 46450 sge0iunmpt 46658 ismea 46691 isome 46734 sssmf 46978 smflimlem3 47013 smflimlem4 47014 isupwlk 48378 fmpodg 49110 fucof1 49563 |
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