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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 6658 | . . 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 6659 | . . 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 6660 | . . 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 1539 –1-1→wf1 6424 |
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 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-ext 2709 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 845 df-3an 1088 df-tru 1542 df-fal 1552 df-ex 1783 df-sb 2068 df-clab 2716 df-cleq 2730 df-clel 2816 df-rab 3073 df-v 3432 df-dif 3890 df-un 3892 df-in 3894 df-ss 3904 df-nul 4258 df-if 4461 df-sn 4563 df-pr 4565 df-op 4569 df-br 5075 df-opab 5137 df-rel 5592 df-cnv 5593 df-co 5594 df-dm 5595 df-rn 5596 df-fun 6429 df-fn 6430 df-f 6431 df-f1 6432 |
This theorem is referenced by: f10d 6743 fthf1 17621 cofth 17639 istrkgld 26808 istrkg2ld 26809 isushgr 27419 isuspgr 27510 isusgr 27511 isuspgrop 27519 isusgrop 27520 ausgrusgrb 27523 ausgrusgri 27526 usgrstrrepe 27590 uspgr1e 27599 usgrexmpl 27618 usgrres1 27670 usgrexi 27796 uspgr2wlkeq 28000 usgr2trlncl 28114 aciunf1 30986 pfxf1 31202 s1f1 31203 tocycfv 31362 tocycf 31370 tocyc01 31371 cycpmco2f1 31377 cycpmco2rn 31378 cycpmco2lem1 31379 cycpmco2lem2 31380 cycpmco2lem3 31381 cycpmco2lem4 31382 cycpmco2lem5 31383 cycpmco2lem6 31384 cycpmco2lem7 31385 cycpmco2 31386 cycpm3cl2 31389 cycpmconjv 31395 tocyccntz 31397 cyc3evpm 31403 cycpmgcl 31406 cycpmconjslem2 31408 cyc3conja 31410 dimkerim 31694 f1resfz0f1d 33058 f1cof1b 44525 fundcmpsurinjALT 44820 |
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