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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 6771 | . . 3 ⊢ (𝐹 = 𝐺 → (𝐹:𝐴–1-1→𝐶 ↔ 𝐺:𝐴–1-1→𝐶)) | |
| 3 | 1, 2 | syl 18 | . 2 ⊢ (𝜑 → (𝐹:𝐴–1-1→𝐶 ↔ 𝐺:𝐴–1-1→𝐶)) |
| 4 | f1eq123d.2 | . . 3 ⊢ (𝜑 → 𝐴 = 𝐵) | |
| 5 | f1eq2 6772 | . . 3 ⊢ (𝐴 = 𝐵 → (𝐺:𝐴–1-1→𝐶 ↔ 𝐺:𝐵–1-1→𝐶)) | |
| 6 | 4, 5 | syl 18 | . 2 ⊢ (𝜑 → (𝐺:𝐴–1-1→𝐶 ↔ 𝐺:𝐵–1-1→𝐶)) |
| 7 | f1eq123d.3 | . . 3 ⊢ (𝜑 → 𝐶 = 𝐷) | |
| 8 | f1eq3 6773 | . . 3 ⊢ (𝐶 = 𝐷 → (𝐺:𝐵–1-1→𝐶 ↔ 𝐺:𝐵–1-1→𝐷)) | |
| 9 | 7, 8 | syl 18 | . 2 ⊢ (𝜑 → (𝐺:𝐵–1-1→𝐶 ↔ 𝐺:𝐵–1-1→𝐷)) |
| 10 | 3, 6, 9 | 3bitrd 308 | 1 ⊢ (𝜑 → (𝐹:𝐴–1-1→𝐶 ↔ 𝐺:𝐵–1-1→𝐷)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 209 = wceq 1570 –1-1→wf1 6535 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1825 ax-4 1839 ax-5 1940 ax-6 1997 ax-7 2038 ax-8 2145 ax-9 2153 ax-ext 2735 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1810 df-sb 2097 df-clab 2742 df-cleq 2755 df-clel 2838 df-rab 3417 df-v 3457 df-dif 3909 df-un 3911 df-ss 3923 df-nul 4288 df-if 4489 df-sn 4591 df-pr 4593 df-op 4597 df-br 5111 df-opab 5175 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-fun 6540 df-fn 6541 df-f 6542 df-f1 6543 |
| This theorem is referenced by: f10d 6857 fthf1 17977 cofth 17995 rngqiprngimf1 21421 istrkgld 28706 istrkg2ld 28707 isushgr 29389 isuspgr 29480 isusgr 29481 isuspgrop 29489 isusgrop 29490 ausgrusgrb 29493 ausgrusgri 29496 usgrstrrepe 29563 uspgr1e 29572 usgrres1 29643 usgrexi 29769 uspgr2wlkeq 29973 usgr2trlncl 30087 aciunf1 32986 pfxf1 33240 s1f1 33241 tocycfv 33407 tocycf 33415 tocyc01 33416 cycpmco2f1 33422 cycpmco2rn 33423 cycpmco2lem1 33424 cycpmco2lem2 33425 cycpmco2lem3 33426 cycpmco2lem4 33427 cycpmco2lem5 33428 cycpmco2lem6 33429 cycpmco2lem7 33430 cycpmco2 33431 cycpm3cl2 33434 cycpmconjv 33440 tocyccntz 33442 cyc3evpm 33448 cycpmgcl 33451 cycpmconjslem2 33453 cyc3conja 33455 dimkerim 33995 f1resfz0f1d 35583 aks6d1c2 42875 f1cof1b 47791 fundcmpsurinjALT 48138 upgrimtrls 48648 stgrusgra 48701 gpgusgra 48799 cofidf2 49875 |
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