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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⟶1-1𝐶 ↔ 𝐺:𝐵⟶1-1𝐷)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | f1eq123d.1 | . . 3 ⊢ (𝜑 → 𝐹 = 𝐺) | |
| 2 | f1eq1 6798 | . . 3 ⊢ (𝐹 = 𝐺 → (𝐹:𝐴⟶1-1𝐶 ↔ 𝐺:𝐴⟶1-1𝐶)) | |
| 3 | 1, 2 | syl 18 | . 2 ⊢ (𝜑 → (𝐹:𝐴⟶1-1𝐶 ↔ 𝐺:𝐴⟶1-1𝐶)) |
| 4 | f1eq123d.2 | . . 3 ⊢ (𝜑 → 𝐴 = 𝐵) | |
| 5 | f1eq2 6799 | . . 3 ⊢ (𝐴 = 𝐵 → (𝐺:𝐴⟶1-1𝐶 ↔ 𝐺:𝐵⟶1-1𝐶)) | |
| 6 | 4, 5 | syl 18 | . 2 ⊢ (𝜑 → (𝐺:𝐴⟶1-1𝐶 ↔ 𝐺:𝐵⟶1-1𝐶)) |
| 7 | f1eq123d.3 | . . 3 ⊢ (𝜑 → 𝐶 = 𝐷) | |
| 8 | f1eq3 6800 | . . 3 ⊢ (𝐶 = 𝐷 → (𝐺:𝐵⟶1-1𝐶 ↔ 𝐺:𝐵⟶1-1𝐷)) | |
| 9 | 7, 8 | syl 18 | . 2 ⊢ (𝜑 → (𝐺:𝐵⟶1-1𝐶 ↔ 𝐺:𝐵⟶1-1𝐷)) |
| 10 | 3, 6, 9 | 3bitrd 308 | 1 ⊢ (𝜑 → (𝐹:𝐴⟶1-1𝐶 ↔ 𝐺:𝐵⟶1-1𝐷)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 = wceq 1570 ⟶1-1wf1 6558 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-ext 2735 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2102 df-clab 2742 df-cleq 2755 df-clel 2839 df-rab 3417 df-v 3456 df-ss 3901 df-dif 4050 df-un 4154 df-nul 4282 df-if 4486 df-sn 4589 df-pr 4591 df-op 4839 df-br 5107 df-opab 5172 df-rel 5663 df-cnv 5664 df-co 5665 df-dm 5666 df-rn 5667 df-fun 6563 df-fn 6564 df-f 6565 df-f1 6566 |
| This theorem is used by: f10d 6885 f1resfz0f1d 13957 s1f1 14787 fthf1 18126 cofth 18144 rngqiprngimf1 21629 istrkgld 28954 istrkg2ld 28955 isushgr 29672 isuspgr 29766 isusgr 29767 isuspgrop 29775 isusgrop 29776 ausgrusgrb 29779 ausgrusgri 29782 usgrstrrepe 29849 uspgr1e 29858 usgrres1 29929 usgrexi 30055 uspgr2wlkeq 30259 usgr2trlncl 30379 aciunf1 33332 pfxf1 33582 tocycfv 33746 tocycf 33754 tocyc01 33755 cycpmco2f1 33761 cycpmco2rn 33762 cycpmco2lem1 33763 cycpmco2lem2 33764 cycpmco2lem3 33765 cycpmco2lem4 33766 cycpmco2lem5 33767 cycpmco2lem6 33768 cycpmco2lem7 33769 cycpmco2 33770 cycpm3cl2 33773 cycpmconjv 33779 tocyccntz 33781 cyc3evpm 33787 cycpmgcl 33790 cycpmconjslem2 33792 cyc3conja 33794 dimkerim 34342 aks6d1c2 43383 f1cof1b 48362 fundcmpsurinjALT 48709 upgrimtrls 49219 stgrusgra 49272 gpgusgra 49370 cofidf2 50451 |
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