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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 6652 | . 2 ⊢ (𝜑 → (𝐹:𝐴⟶𝐶 ↔ 𝐺:𝐴⟶𝐶)) |
| 3 | feq12d.2 | . . 3 ⊢ (𝜑 → 𝐴 = 𝐵) | |
| 4 | 3 | feq2d 6654 | . 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 6496 |
| 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 2709 |
| 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 2716 df-cleq 2729 df-clel 2812 df-rab 3402 df-v 3444 df-dif 3906 df-un 3908 df-ss 3920 df-nul 4288 df-if 4482 df-sn 4583 df-pr 4585 df-op 4589 df-br 5101 df-opab 5163 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-fun 6502 df-fn 6503 df-f 6504 |
| This theorem is referenced by: feq123d 6659 fprg 7110 smoeq 8292 oif 9447 1fv 13575 catcisolem 18046 hofcl 18194 dmdprd 19941 dpjf 20000 pjf2 21681 mat1dimmul 22432 lmbr2 23215 lmff 23257 dfac14 23574 lmmbr2 25227 lmcau 25281 perfdvf 25872 dvnfre 25924 dvle 25980 dvfsumle 25994 dvfsumleOLD 25995 dvfsumge 25996 dvmptrecl 25998 uhgr0e 29156 uhgrstrrepe 29163 incistruhgr 29164 upgr1e 29198 1hevtxdg1 29592 umgr2v2e 29611 iswlk 29696 0wlkons1 30208 resf1o 32819 ismeas 34376 omsmeas 34500 breprexplema 34807 satfun 35624 mbfresfi 37911 sdclem1 37988 dfac21 43417 fnlimfvre 46026 climrescn 46100 fourierdlem74 46532 fourierdlem103 46561 fourierdlem104 46562 sge0iunmpt 46770 ismea 46803 isome 46846 sssmf 47090 smflimlem3 47125 smflimlem4 47126 isupwlk 48490 fmpodg 49222 fucof1 49675 |
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