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| Mirrors > Home > MPE Home > Th. List > idacd | Structured version Visualization version GIF version | ||
| Description: Codomain of the identity arrow. (Contributed by Mario Carneiro, 11-Jan-2017.) |
| Ref | Expression |
|---|---|
| idafval.i | ⊢ 𝐼 = (Ida‘𝐶) |
| idafval.b | ⊢ 𝐵 = (Base‘𝐶) |
| idafval.c | ⊢ (𝜑 → 𝐶 ∈ Cat) |
| idahom.x | ⊢ (𝜑 → 𝑋 ∈ 𝐵) |
| Ref | Expression |
|---|---|
| idacd | ⊢ (𝜑 → (coda‘(𝐼‘𝑋)) = 𝑋) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | idafval.i | . . 3 ⊢ 𝐼 = (Ida‘𝐶) | |
| 2 | idafval.b | . . 3 ⊢ 𝐵 = (Base‘𝐶) | |
| 3 | idafval.c | . . 3 ⊢ (𝜑 → 𝐶 ∈ Cat) | |
| 4 | idahom.x | . . 3 ⊢ (𝜑 → 𝑋 ∈ 𝐵) | |
| 5 | eqid 2735 | . . 3 ⊢ (Homa‘𝐶) = (Homa‘𝐶) | |
| 6 | 1, 2, 3, 4, 5 | idahom 18016 | . 2 ⊢ (𝜑 → (𝐼‘𝑋) ∈ (𝑋(Homa‘𝐶)𝑋)) |
| 7 | 5 | homacd 17997 | . 2 ⊢ ((𝐼‘𝑋) ∈ (𝑋(Homa‘𝐶)𝑋) → (coda‘(𝐼‘𝑋)) = 𝑋) |
| 8 | 6, 7 | syl 17 | 1 ⊢ (𝜑 → (coda‘(𝐼‘𝑋)) = 𝑋) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 ‘cfv 6487 (class class class)co 7356 Basecbs 17168 Catccat 17619 codaccoda 17977 Homachoma 17979 Idacida 18009 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2184 ax-ext 2707 ax-rep 5201 ax-sep 5220 ax-nul 5230 ax-pow 5296 ax-pr 5364 ax-un 7678 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2538 df-eu 2568 df-clab 2714 df-cleq 2727 df-clel 2810 df-nfc 2884 df-ne 2931 df-ral 3050 df-rex 3060 df-rmo 3340 df-reu 3341 df-rab 3388 df-v 3429 df-sbc 3726 df-csb 3834 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-nul 4264 df-if 4457 df-pw 4533 df-sn 4558 df-pr 4560 df-op 4564 df-ot 4566 df-uni 4841 df-iun 4925 df-br 5075 df-opab 5137 df-mpt 5156 df-id 5515 df-xp 5626 df-rel 5627 df-cnv 5628 df-co 5629 df-dm 5630 df-rn 5631 df-res 5632 df-ima 5633 df-iota 6443 df-fun 6489 df-fn 6490 df-f 6491 df-f1 6492 df-fo 6493 df-f1o 6494 df-fv 6495 df-riota 7313 df-ov 7359 df-1st 7931 df-2nd 7932 df-cat 17623 df-cid 17624 df-coda 17981 df-homa 17982 df-ida 18011 |
| This theorem is referenced by: (None) |
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