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| Mirrors > Home > MPE Home > Th. List > Mathboxes > reldmcmd2 | Structured version Visualization version GIF version | ||
| Description: The domain of (𝐶 Colimit 𝐷) is a relation. (Contributed by Zhi Wang, 13-Nov-2025.) |
| Ref | Expression |
|---|---|
| reldmcmd2 | ⊢ Rel dom (𝐶 Colimit 𝐷) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | relfunc 18087 | . 2 ⊢ Rel (𝐷 Func 𝐶) | |
| 2 | ovex 7484 | . . . 4 ⊢ ((𝐶Δfunc𝐷)(𝐶 UP (𝐷 FuncCat 𝐶))𝑓) ∈ V | |
| 3 | cmdfval 51164 | . . . 4 ⊢ (𝐶 Colimit 𝐷) = (𝑓 ∈ (𝐷 Func 𝐶) ↦ ((𝐶Δfunc𝐷)(𝐶 UP (𝐷 FuncCat 𝐶))𝑓)) | |
| 4 | 2, 3 | dmmpti 6713 | . . 3 ⊢ dom (𝐶 Colimit 𝐷) = (𝐷 Func 𝐶) |
| 5 | 4 | releqi 5762 | . 2 ⊢ (Rel dom (𝐶 Colimit 𝐷) ↔ Rel (𝐷 Func 𝐶)) |
| 6 | 1, 5 | mpbir 234 | 1 ⊢ Rel dom (𝐶 Colimit 𝐷) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: dom cdm 5658 Rel wrel 5663 (class class class)co 7451 Func cfunc 18079 FuncCat cfuc 18170 Δfunccdiag 18436 UP cup 50620 Colimit ccmd 51158 |
| 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-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-rep 5238 ax-sep 5255 ax-nul 5266 ax-pr 5398 |
| 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-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-ral 3081 df-rex 3091 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-sn 4589 df-pr 4591 df-op 4841 df-uni 4873 df-iun 4958 df-br 5109 df-opab 5174 df-mpt 5193 df-id 5553 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-rn 5669 df-res 5670 df-ima 5671 df-iota 6520 df-fun 6568 df-fn 6569 df-f 6570 df-f1 6571 df-fo 6572 df-f1o 6573 df-fv 6574 df-ov 7454 df-oprab 7455 df-mpo 7456 df-func 18083 df-cmd 51160 |
| This theorem is used by: (None) |
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