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Theorem zeroopropdlem 50472
Description: Lemma for zeroopropd 50475. (Contributed by Zhi Wang, 26-Oct-2025.)
Hypotheses
Ref Expression
initopropd.1 (𝜑 → (Homf ‘𝐶) = (Homf ‘𝐷))
initopropd.2 (𝜑 → (compf‘𝐶) = (compf‘𝐷))
initopropdlem.1 (𝜑 → ¬ 𝐶 ∈ V)
Assertion
Ref Expression
zeroopropdlem (𝜑 → (ZeroO‘𝐶) = (ZeroO‘𝐷))

Proof of Theorem zeroopropdlem
StepHypRef Expression
1 zeroofn 18173 . 2 ZeroO Fn Cat
2 initopropdlem.1 . 2 (𝜑 → ¬ 𝐶 ∈ V)
3 ssv 3933 . 2 Cat ⊆ V
4 simpr 490 . . . 4 ((𝜑 ∧ 𝐷 ∈ Cat) → 𝐷 ∈ Cat)
5 eqid 2760 . . . 4 (Base‘𝐷) = (Base‘𝐷)
6 eqid 2760 . . . 4 (Hom ‘𝐷) = (Hom ‘𝐷)
74, 5, 6zerooval 18179 . . 3 ((𝜑 ∧ 𝐷 ∈ Cat) → (ZeroO‘𝐷) = ((InitO‘𝐷) ∩ (TermO‘𝐷)))
8 initopropd.1 . . . . . . . 8 (𝜑 → (Homf ‘𝐶) = (Homf ‘𝐷))
9 initopropd.2 . . . . . . . 8 (𝜑 → (compf‘𝐶) = (compf‘𝐷))
108, 9, 2initopropdlem 50470 . . . . . . 7 (𝜑 → (InitO‘𝐶) = (InitO‘𝐷))
11 fvprc 6882 . . . . . . . 8 (¬ 𝐶 ∈ V → (InitO‘𝐶) = ∅)
122, 11syl 18 . . . . . . 7 (𝜑 → (InitO‘𝐶) = ∅)
1310, 12eqtr3d 2797 . . . . . 6 (𝜑 → (InitO‘𝐷) = ∅)
1413adantr 486 . . . . 5 ((𝜑 ∧ 𝐷 ∈ Cat) → (InitO‘𝐷) = ∅)
158, 9, 2termopropdlem 50471 . . . . . . 7 (𝜑 → (TermO‘𝐶) = (TermO‘𝐷))
16 fvprc 6882 . . . . . . . 8 (¬ 𝐶 ∈ V → (TermO‘𝐶) = ∅)
172, 16syl 18 . . . . . . 7 (𝜑 → (TermO‘𝐶) = ∅)
1815, 17eqtr3d 2797 . . . . . 6 (𝜑 → (TermO‘𝐷) = ∅)
1918adantr 486 . . . . 5 ((𝜑 ∧ 𝐷 ∈ Cat) → (TermO‘𝐷) = ∅)
2014, 19ineq12d 4117 . . . 4 ((𝜑 ∧ 𝐷 ∈ Cat) → ((InitO‘𝐷) ∩ (TermO‘𝐷)) = (∅ ∩ ∅))
21 inidm 4122 . . . 4 (∅ ∩ ∅) = ∅
2220, 21eqtrdi 2811 . . 3 ((𝜑 ∧ 𝐷 ∈ Cat) → ((InitO‘𝐷) ∩ (TermO‘𝐷)) = ∅)
237, 22eqtrd 2795 . 2 ((𝜑 ∧ 𝐷 ∈ Cat) → (ZeroO‘𝐷) = ∅)
241, 2, 3, 23initopropdlemlem 50469 1 (𝜑 → (ZeroO‘𝐶) = (ZeroO‘𝐷))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  ¬ wn 3   → wi 4   ∧ wa 401   = wceq 1569   ∈ wcel 2144  Vcvv 3450   ∩ cin 4088  ∅c0 4277  ‘cfv 6543  Basecbs 17396  Hom chom 17448  Catccat 17847  Homf chomf 17849  compfccomf 17850  InitOcinito 18165  TermOctermo 18166  ZeroOczeroo 18167
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1827  ax-4 1841  ax-5 1942  ax-6 1999  ax-7 2040  ax-8 2146  ax-9 2154  ax-10 2177  ax-11 2193  ax-12 2212  ax-ext 2732  ax-rep 5231  ax-sep 5248  ax-nul 5259  ax-pow 5327  ax-pr 5391  ax-un 7755
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1572  df-fal 1582  df-ex 1812  df-nf 1816  df-sb 2099  df-mo 2564  df-eu 2594  df-clab 2739  df-cleq 2752  df-clel 2835  df-nfc 2909  df-ne 2956  df-ral 3077  df-rex 3087  df-reu 3366  df-rab 3413  df-v 3452  df-sbc 3739  df-csb 3848  df-ss 3897  df-dif 4046  df-in 4090  df-un 4150  df-nul 4278  df-if 4482  df-pw 4558  df-sn 4585  df-pr 4587  df-op 4835  df-uni 4867  df-iun 4952  df-br 5103  df-opab 5167  df-mpt 5186  df-id 5546  df-xp 5657  df-rel 5658  df-cnv 5659  df-co 5660  df-dm 5661  df-rn 5662  df-res 5663  df-ima 5664  df-iota 6497  df-fun 6545  df-fn 6546  df-f 6547  df-f1 6548  df-fo 6549  df-f1o 6550  df-fv 6551  df-ov 7427  df-oprab 7428  df-mpo 7429  df-1st 8005  df-2nd 8006  df-homf 17853  df-inito 18168  df-termo 18169  df-zeroo 18170
This theorem is used by:  zeroopropd  50475
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