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Mirrors > Home > MPE Home > Th. List > sectid | Structured version Visualization version GIF version |
Description: The identity is a section of itself. (Contributed by AV, 8-Apr-2020.) |
Ref | Expression |
---|---|
invid.b | ⊢ 𝐵 = (Base‘𝐶) |
invid.i | ⊢ 𝐼 = (Id‘𝐶) |
invid.c | ⊢ (𝜑 → 𝐶 ∈ Cat) |
invid.x | ⊢ (𝜑 → 𝑋 ∈ 𝐵) |
Ref | Expression |
---|---|
sectid | ⊢ (𝜑 → (𝐼‘𝑋)(𝑋(Sect‘𝐶)𝑋)(𝐼‘𝑋)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | invid.b | . . 3 ⊢ 𝐵 = (Base‘𝐶) | |
2 | eqid 2738 | . . 3 ⊢ (Hom ‘𝐶) = (Hom ‘𝐶) | |
3 | invid.i | . . 3 ⊢ 𝐼 = (Id‘𝐶) | |
4 | invid.c | . . 3 ⊢ (𝜑 → 𝐶 ∈ Cat) | |
5 | invid.x | . . 3 ⊢ (𝜑 → 𝑋 ∈ 𝐵) | |
6 | eqid 2738 | . . 3 ⊢ (comp‘𝐶) = (comp‘𝐶) | |
7 | 1, 2, 3, 4, 5 | catidcl 17210 | . . 3 ⊢ (𝜑 → (𝐼‘𝑋) ∈ (𝑋(Hom ‘𝐶)𝑋)) |
8 | 1, 2, 3, 4, 5, 6, 5, 7 | catlid 17211 | . 2 ⊢ (𝜑 → ((𝐼‘𝑋)(〈𝑋, 𝑋〉(comp‘𝐶)𝑋)(𝐼‘𝑋)) = (𝐼‘𝑋)) |
9 | eqid 2738 | . . 3 ⊢ (Sect‘𝐶) = (Sect‘𝐶) | |
10 | 1, 2, 6, 3, 9, 4, 5, 5, 7, 7 | issect2 17284 | . 2 ⊢ (𝜑 → ((𝐼‘𝑋)(𝑋(Sect‘𝐶)𝑋)(𝐼‘𝑋) ↔ ((𝐼‘𝑋)(〈𝑋, 𝑋〉(comp‘𝐶)𝑋)(𝐼‘𝑋)) = (𝐼‘𝑋))) |
11 | 8, 10 | mpbird 260 | 1 ⊢ (𝜑 → (𝐼‘𝑋)(𝑋(Sect‘𝐶)𝑋)(𝐼‘𝑋)) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 = wceq 1543 ∈ wcel 2111 〈cop 4562 class class class wbr 5068 ‘cfv 6398 (class class class)co 7232 Basecbs 16785 Hom chom 16838 compcco 16839 Catccat 17192 Idccid 17193 Sectcsect 17274 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1976 ax-7 2016 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2159 ax-12 2176 ax-ext 2709 ax-rep 5194 ax-sep 5207 ax-nul 5214 ax-pow 5273 ax-pr 5337 ax-un 7542 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 848 df-3an 1091 df-tru 1546 df-fal 1556 df-ex 1788 df-nf 1792 df-sb 2072 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2887 df-ne 2942 df-ral 3067 df-rex 3068 df-reu 3069 df-rmo 3070 df-rab 3071 df-v 3423 df-sbc 3710 df-csb 3827 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-nul 4253 df-if 4455 df-pw 4530 df-sn 4557 df-pr 4559 df-op 4563 df-uni 4835 df-iun 4921 df-br 5069 df-opab 5131 df-mpt 5151 df-id 5470 df-xp 5572 df-rel 5573 df-cnv 5574 df-co 5575 df-dm 5576 df-rn 5577 df-res 5578 df-ima 5579 df-iota 6356 df-fun 6400 df-fn 6401 df-f 6402 df-f1 6403 df-fo 6404 df-f1o 6405 df-fv 6406 df-riota 7189 df-ov 7235 df-oprab 7236 df-mpo 7237 df-1st 7780 df-2nd 7781 df-cat 17196 df-cid 17197 df-sect 17277 |
This theorem is referenced by: invid 17317 |
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