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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 2761 | . . 3 ⊢ (Homa‘𝐶) = (Homa‘𝐶) | |
| 6 | 1, 2, 3, 4, 5 | idahom 18074 | . 2 ⊢ (𝜑 → (𝐼‘𝑋) ∈ (𝑋(Homa‘𝐶)𝑋)) |
| 7 | 5 | homadm 18054 | . 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 1559 ∈ wcel 2141 ‘cfv 6515 (class class class)co 7390 Basecbs 17226 Catccat 17677 domacdoma 18034 Homachoma 18037 Idacida 18067 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-rep 5226 ax-sep 5245 ax-nul 5255 ax-pow 5321 ax-pr 5389 ax-un 7712 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-ral 3076 df-rex 3086 df-rmo 3366 df-reu 3367 df-rab 3414 df-v 3455 df-sbc 3745 df-csb 3853 df-dif 3907 df-un 3909 df-in 3911 df-ss 3921 df-nul 4286 df-if 4480 df-pw 4556 df-sn 4582 df-pr 4584 df-op 4588 df-ot 4590 df-uni 4865 df-iun 4950 df-br 5100 df-opab 5162 df-mpt 5181 df-id 5540 df-xp 5651 df-rel 5652 df-cnv 5653 df-co 5654 df-dm 5655 df-rn 5656 df-res 5657 df-ima 5658 df-iota 6471 df-fun 6517 df-fn 6518 df-f 6519 df-f1 6520 df-fo 6521 df-f1o 6522 df-fv 6523 df-riota 7347 df-ov 7393 df-1st 7964 df-2nd 7965 df-cat 17681 df-cid 17682 df-doma 18038 df-homa 18040 df-ida 18069 |
| This theorem is referenced by: (None) |
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