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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 6650 | . 2 ⊢ (𝜑 → (𝐹:𝐴⟶𝐶 ↔ 𝐺:𝐴⟶𝐶)) |
| 3 | feq12d.2 | . . 3 ⊢ (𝜑 → 𝐴 = 𝐵) | |
| 4 | 3 | feq2d 6652 | . 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 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-8 2116 ax-9 2124 ax-ext 2708 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-sb 2069 df-clab 2715 df-cleq 2728 df-clel 2811 df-rab 3390 df-v 3431 df-dif 3892 df-un 3894 df-ss 3906 df-nul 4274 df-if 4467 df-sn 4568 df-pr 4570 df-op 4574 df-br 5086 df-opab 5148 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-fun 6500 df-fn 6501 df-f 6502 |
| This theorem is referenced by: feq123d 6657 fprg 7109 smoeq 8290 oif 9445 1fv 13601 catcisolem 18077 hofcl 18225 dmdprd 19975 dpjf 20034 pjf2 21694 mat1dimmul 22441 lmbr2 23224 lmff 23266 dfac14 23583 lmmbr2 25226 lmcau 25280 perfdvf 25870 dvnfre 25919 dvle 25974 dvfsumle 25988 dvfsumge 25989 dvmptrecl 25991 uhgr0e 29140 uhgrstrrepe 29147 incistruhgr 29148 upgr1e 29182 1hevtxdg1 29575 umgr2v2e 29594 iswlk 29679 0wlkons1 30191 resf1o 32803 ismeas 34343 omsmeas 34467 breprexplema 34774 satfun 35593 mbfresfi 37987 sdclem1 38064 dfac21 43494 fnlimfvre 46102 climrescn 46176 fourierdlem74 46608 fourierdlem103 46637 fourierdlem104 46638 sge0iunmpt 46846 ismea 46879 isome 46922 sssmf 47166 smflimlem3 47201 smflimlem4 47202 isupwlk 48612 fmpodg 49344 fucof1 49797 |
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