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Mirrors > Home > MPE Home > Th. List > f1eq123d | Structured version Visualization version GIF version |
Description: Equality deduction for one-to-one functions. (Contributed by Mario Carneiro, 27-Jan-2017.) |
Ref | Expression |
---|---|
f1eq123d.1 | ⊢ (𝜑 → 𝐹 = 𝐺) |
f1eq123d.2 | ⊢ (𝜑 → 𝐴 = 𝐵) |
f1eq123d.3 | ⊢ (𝜑 → 𝐶 = 𝐷) |
Ref | Expression |
---|---|
f1eq123d | ⊢ (𝜑 → (𝐹:𝐴–1-1→𝐶 ↔ 𝐺:𝐵–1-1→𝐷)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | f1eq123d.1 | . . 3 ⊢ (𝜑 → 𝐹 = 𝐺) | |
2 | f1eq1 6734 | . . 3 ⊢ (𝐹 = 𝐺 → (𝐹:𝐴–1-1→𝐶 ↔ 𝐺:𝐴–1-1→𝐶)) | |
3 | 1, 2 | syl 17 | . 2 ⊢ (𝜑 → (𝐹:𝐴–1-1→𝐶 ↔ 𝐺:𝐴–1-1→𝐶)) |
4 | f1eq123d.2 | . . 3 ⊢ (𝜑 → 𝐴 = 𝐵) | |
5 | f1eq2 6735 | . . 3 ⊢ (𝐴 = 𝐵 → (𝐺:𝐴–1-1→𝐶 ↔ 𝐺:𝐵–1-1→𝐶)) | |
6 | 4, 5 | syl 17 | . 2 ⊢ (𝜑 → (𝐺:𝐴–1-1→𝐶 ↔ 𝐺:𝐵–1-1→𝐶)) |
7 | f1eq123d.3 | . . 3 ⊢ (𝜑 → 𝐶 = 𝐷) | |
8 | f1eq3 6736 | . . 3 ⊢ (𝐶 = 𝐷 → (𝐺:𝐵–1-1→𝐶 ↔ 𝐺:𝐵–1-1→𝐷)) | |
9 | 7, 8 | syl 17 | . 2 ⊢ (𝜑 → (𝐺:𝐵–1-1→𝐶 ↔ 𝐺:𝐵–1-1→𝐷)) |
10 | 3, 6, 9 | 3bitrd 305 | 1 ⊢ (𝜑 → (𝐹:𝐴–1-1→𝐶 ↔ 𝐺:𝐵–1-1→𝐷)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 = wceq 1542 –1-1→wf1 6494 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-ext 2708 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-sb 2069 df-clab 2715 df-cleq 2729 df-clel 2815 df-rab 3409 df-v 3448 df-dif 3914 df-un 3916 df-in 3918 df-ss 3928 df-nul 4284 df-if 4488 df-sn 4588 df-pr 4590 df-op 4594 df-br 5107 df-opab 5169 df-rel 5641 df-cnv 5642 df-co 5643 df-dm 5644 df-rn 5645 df-fun 6499 df-fn 6500 df-f 6501 df-f1 6502 |
This theorem is referenced by: f10d 6819 fthf1 17805 cofth 17823 istrkgld 27404 istrkg2ld 27405 isushgr 28015 isuspgr 28106 isusgr 28107 isuspgrop 28115 isusgrop 28116 ausgrusgrb 28119 ausgrusgri 28122 usgrstrrepe 28186 uspgr1e 28195 usgrexmpl 28214 usgrres1 28266 usgrexi 28392 uspgr2wlkeq 28597 usgr2trlncl 28711 aciunf1 31582 pfxf1 31801 s1f1 31802 tocycfv 31961 tocycf 31969 tocyc01 31970 cycpmco2f1 31976 cycpmco2rn 31977 cycpmco2lem1 31978 cycpmco2lem2 31979 cycpmco2lem3 31980 cycpmco2lem4 31981 cycpmco2lem5 31982 cycpmco2lem6 31983 cycpmco2lem7 31984 cycpmco2 31985 cycpm3cl2 31988 cycpmconjv 31994 tocyccntz 31996 cyc3evpm 32002 cycpmgcl 32005 cycpmconjslem2 32007 cyc3conja 32009 dimkerim 32325 f1resfz0f1d 33707 f1cof1b 45316 fundcmpsurinjALT 45611 |
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