| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > feq2d | GIF version | ||
| Description: Equality deduction for functions. (Contributed by Paul Chapman, 22-Jun-2011.) |
| Ref | Expression |
|---|---|
| feq2d.1 | ⊢ (𝜑 → 𝐴 = 𝐵) |
| Ref | Expression |
|---|---|
| feq2d | ⊢ (𝜑 → (𝐹:𝐴⟶𝐶 ↔ 𝐹:𝐵⟶𝐶)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | feq2d.1 | . 2 ⊢ (𝜑 → 𝐴 = 𝐵) | |
| 2 | feq2 5460 | . 2 ⊢ (𝐴 = 𝐵 → (𝐹:𝐴⟶𝐶 ↔ 𝐹:𝐵⟶𝐶)) | |
| 3 | 1, 2 | syl 14 | 1 ⊢ (𝜑 → (𝐹:𝐴⟶𝐶 ↔ 𝐹:𝐵⟶𝐶)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ↔ wb 105 = wceq 1395 ⟶wf 5317 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-5 1493 ax-gen 1495 ax-4 1556 ax-17 1572 ax-ext 2211 |
| This theorem depends on definitions: df-bi 117 df-cleq 2222 df-fn 5324 df-f 5325 |
| This theorem is referenced by: feq12d 5466 ffdm 5499 fsng 5813 issmo2 6446 qliftf 6780 elpm2r 6826 casef 7271 fseq1p1m1 10307 fseq1m1p1 10308 seqf 10703 seqf2 10707 seqf1og 10760 iswrdinn0 11094 wrdf 11095 iswrdiz 11096 wrdffz 11110 ffz0iswrdnn0 11116 wrdnval 11120 ccatalpha 11166 swrdf 11208 swrdwrdsymbg 11217 cats1un 11274 s2dmg 11343 intopsn 13421 gsumprval 13453 resmhm 13541 gsumwsubmcl 13550 gsumwmhm 13552 isghm 13801 resghm 13818 psrelbasfi 14661 lmtopcnp 14945 ellimc3apf 15355 dvidlemap 15386 dvidrelem 15387 dvidsslem 15388 dviaddf 15400 dvimulf 15401 dvcjbr 15403 dvcj 15404 dvrecap 15408 dvmptclx 15413 uhgrm 15899 wrdupgren 15917 upgrfnen 15919 wrdumgren 15927 umgrfnen 15929 upgr2wlkdc 16147 wlkres 16149 |
| Copyright terms: Public domain | W3C validator |