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Theorem reldmlmd2 50140
Description: The domain of (𝐶 Limit 𝐷) is a relation. (Contributed by Zhi Wang, 14-Nov-2025.)
Assertion
Ref Expression
reldmlmd2 Rel dom (𝐶 Limit 𝐷)

Proof of Theorem reldmlmd2
Dummy variable 𝑓 is distinct from all other variables.
StepHypRef Expression
1 relfunc 17820 . 2 Rel (𝐷 Func 𝐶)
2 ovex 7393 . . . 4 (( oppFunc ‘(𝐶Δfunc𝐷))((oppCat‘𝐶) UP (oppCat‘(𝐷 FuncCat 𝐶)))𝑓) ∈ V
3 lmdfval 50136 . . . 4 (𝐶 Limit 𝐷) = (𝑓 ∈ (𝐷 Func 𝐶) ↦ (( oppFunc ‘(𝐶Δfunc𝐷))((oppCat‘𝐶) UP (oppCat‘(𝐷 FuncCat 𝐶)))𝑓))
42, 3dmmpti 6636 . . 3 dom (𝐶 Limit 𝐷) = (𝐷 Func 𝐶)
54releqi 5727 . 2 (Rel dom (𝐶 Limit 𝐷) ↔ Rel (𝐷 Func 𝐶))
61, 5mpbir 231 1 Rel dom (𝐶 Limit 𝐷)
Colors of variables: wff setvar class
Syntax hints:  dom cdm 5624  Rel wrel 5629  cfv 6492  (class class class)co 7360  oppCatcoppc 17668   Func cfunc 17812   FuncCat cfuc 17903  Δfunccdiag 18169   oppFunc coppf 49609   UP cup 49660   Limit clmd 50130
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-11 2163  ax-12 2185  ax-ext 2709  ax-rep 5212  ax-sep 5231  ax-nul 5241  ax-pr 5370  ax-un 7682
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-mo 2540  df-eu 2570  df-clab 2716  df-cleq 2729  df-clel 2812  df-nfc 2886  df-ne 2934  df-ral 3053  df-rex 3063  df-reu 3344  df-rab 3391  df-v 3432  df-sbc 3730  df-csb 3839  df-dif 3893  df-un 3895  df-in 3897  df-ss 3907  df-nul 4275  df-if 4468  df-sn 4569  df-pr 4571  df-op 4575  df-uni 4852  df-iun 4936  df-br 5087  df-opab 5149  df-mpt 5168  df-id 5519  df-xp 5630  df-rel 5631  df-cnv 5632  df-co 5633  df-dm 5634  df-rn 5635  df-res 5636  df-ima 5637  df-iota 6448  df-fun 6494  df-fn 6495  df-f 6496  df-f1 6497  df-fo 6498  df-f1o 6499  df-fv 6500  df-ov 7363  df-oprab 7364  df-mpo 7365  df-1st 7935  df-2nd 7936  df-func 17816  df-lmd 50132
This theorem is referenced by: (None)
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