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| Mirrors > Home > MPE Home > Th. List > idadm | Structured version Visualization version GIF version | ||
| Description: Domain 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 |
|---|---|
| idadm | ⊢ (𝜑 → (doma‘(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 2730 | . . 3 ⊢ (Homa‘𝐶) = (Homa‘𝐶) | |
| 6 | 1, 2, 3, 4, 5 | idahom 18028 | . 2 ⊢ (𝜑 → (𝐼‘𝑋) ∈ (𝑋(Homa‘𝐶)𝑋)) |
| 7 | 5 | homadm 18008 | . 2 ⊢ ((𝐼‘𝑋) ∈ (𝑋(Homa‘𝐶)𝑋) → (doma‘(𝐼‘𝑋)) = 𝑋) |
| 8 | 6, 7 | syl 17 | 1 ⊢ (𝜑 → (doma‘(𝐼‘𝑋)) = 𝑋) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1540 ∈ wcel 2109 ‘cfv 6513 (class class class)co 7389 Basecbs 17185 Catccat 17631 domacdoma 17988 Homachoma 17991 Idacida 18021 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2702 ax-rep 5236 ax-sep 5253 ax-nul 5263 ax-pow 5322 ax-pr 5389 ax-un 7713 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2534 df-eu 2563 df-clab 2709 df-cleq 2722 df-clel 2804 df-nfc 2879 df-ne 2927 df-ral 3046 df-rex 3055 df-rmo 3356 df-reu 3357 df-rab 3409 df-v 3452 df-sbc 3756 df-csb 3865 df-dif 3919 df-un 3921 df-in 3923 df-ss 3933 df-nul 4299 df-if 4491 df-pw 4567 df-sn 4592 df-pr 4594 df-op 4598 df-ot 4600 df-uni 4874 df-iun 4959 df-br 5110 df-opab 5172 df-mpt 5191 df-id 5535 df-xp 5646 df-rel 5647 df-cnv 5648 df-co 5649 df-dm 5650 df-rn 5651 df-res 5652 df-ima 5653 df-iota 6466 df-fun 6515 df-fn 6516 df-f 6517 df-f1 6518 df-fo 6519 df-f1o 6520 df-fv 6521 df-riota 7346 df-ov 7392 df-1st 7970 df-2nd 7971 df-cat 17635 df-cid 17636 df-doma 17992 df-homa 17994 df-ida 18023 |
| This theorem is referenced by: (None) |
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