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Theorem reldmcmd2 50432
Description: The domain of (𝐶 Colimit 𝐷) is a relation. (Contributed by Zhi Wang, 13-Nov-2025.)
Assertion
Ref Expression
reldmcmd2 Rel dom (𝐶 Colimit 𝐷)

Proof of Theorem reldmcmd2
Dummy variable 𝑓 is distinct from all other variables.
StepHypRef Expression
1 relfunc 17914 . 2 Rel (𝐷 Func 𝐶)
2 ovex 7443 . . . 4 ((𝐶Δfunc𝐷)(𝐶 UP (𝐷 FuncCat 𝐶))𝑓) ∈ V
3 cmdfval 50428 . . . 4 (𝐶 Colimit 𝐷) = (𝑓 ∈ (𝐷 Func 𝐶) ↦ ((𝐶Δfunc𝐷)(𝐶 UP (𝐷 FuncCat 𝐶))𝑓))
42, 3dmmpti 6679 . . 3 dom (𝐶 Colimit 𝐷) = (𝐷 Func 𝐶)
54releqi 5764 . 2 (Rel dom (𝐶 Colimit 𝐷) ↔ Rel (𝐷 Func 𝐶))
61, 5mpbir 234 1 Rel dom (𝐶 Colimit 𝐷)
Colors of variables: wff setvar class
Syntax hints:  dom cdm 5661  Rel wrel 5666  (class class class)co 7410   Func cfunc 17906   FuncCat cfuc 17997  Δfunccdiag 18263   UP cup 49951   Colimit ccmd 50422
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1825  ax-4 1839  ax-5 1940  ax-6 1997  ax-7 2038  ax-8 2145  ax-9 2153  ax-10 2176  ax-11 2192  ax-12 2213  ax-ext 2735  ax-rep 5238  ax-sep 5257  ax-nul 5269  ax-pr 5404  ax-un 7732
This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1810  df-nf 1814  df-sb 2097  df-mo 2567  df-eu 2597  df-clab 2742  df-cleq 2755  df-clel 2838  df-nfc 2912  df-ne 2959  df-ral 3080  df-rex 3090  df-reu 3370  df-rab 3417  df-v 3457  df-sbc 3745  df-csb 3854  df-dif 3908  df-un 3910  df-in 3912  df-ss 3922  df-nul 4287  df-if 4488  df-sn 4590  df-pr 4592  df-op 4596  df-uni 4873  df-iun 4958  df-br 5110  df-opab 5174  df-mpt 5193  df-id 5556  df-xp 5667  df-rel 5668  df-cnv 5669  df-co 5670  df-dm 5671  df-rn 5672  df-res 5673  df-ima 5674  df-iota 6492  df-fun 6538  df-fn 6539  df-f 6540  df-f1 6541  df-fo 6542  df-f1o 6543  df-fv 6544  df-ov 7413  df-oprab 7414  df-mpo 7415  df-1st 7982  df-2nd 7983  df-func 17910  df-cmd 50424
This theorem is referenced by: (None)
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