Theorem zeroopropdlem 49824

Description: Lemma for zeroopropd 49827. (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

Step	Hyp	Ref	Expression
1		zeroofn 18013	. 2 ⊢ ZeroO Fn Cat
2		initopropdlem.1	. 2 ⊢ (𝜑 → ¬ 𝐶 ∈ V)
3		ssv 3958	. 2 ⊢ Cat ⊆ V
4		simpr 488	. . . 4 ⊢ ((𝜑 ∧ 𝐷 ∈ Cat) → 𝐷 ∈ Cat)
5		eqid 2761	. . . 4 ⊢ (Base‘𝐷) = (Base‘𝐷)
6		eqid 2761	. . . 4 ⊢ (Hom ‘𝐷) = (Hom ‘𝐷)
7	4, 5, 6	zerooval 18019	. . 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))
10	8, 9, 2	initopropdlem 49822	. . . . . . 7 ⊢ (𝜑 → (InitO‘𝐶) = (InitO‘𝐷))
11		fvprc 6854	. . . . . . . 8 ⊢ (¬ 𝐶 ∈ V → (InitO‘𝐶) = ∅)
12	2, 11	syl 17	. . . . . . 7 ⊢ (𝜑 → (InitO‘𝐶) = ∅)
13	10, 12	eqtr3d 2798	. . . . . 6 ⊢ (𝜑 → (InitO‘𝐷) = ∅)
14	13	adantr 484	. . . . 5 ⊢ ((𝜑 ∧ 𝐷 ∈ Cat) → (InitO‘𝐷) = ∅)
15	8, 9, 2	termopropdlem 49823	. . . . . . 7 ⊢ (𝜑 → (TermO‘𝐶) = (TermO‘𝐷))
16		fvprc 6854	. . . . . . . 8 ⊢ (¬ 𝐶 ∈ V → (TermO‘𝐶) = ∅)
17	2, 16	syl 17	. . . . . . 7 ⊢ (𝜑 → (TermO‘𝐶) = ∅)
18	15, 17	eqtr3d 2798	. . . . . 6 ⊢ (𝜑 → (TermO‘𝐷) = ∅)
19	18	adantr 484	. . . . 5 ⊢ ((𝜑 ∧ 𝐷 ∈ Cat) → (TermO‘𝐷) = ∅)
20	14, 19	ineq12d 4171	. . . 4 ⊢ ((𝜑 ∧ 𝐷 ∈ Cat) → ((InitO‘𝐷) ∩ (TermO‘𝐷)) = (∅ ∩ ∅))
21		inidm 4176	. . . 4 ⊢ (∅ ∩ ∅) = ∅
22	20, 21	eqtrdi 2812	. . 3 ⊢ ((𝜑 ∧ 𝐷 ∈ Cat) → ((InitO‘𝐷) ∩ (TermO‘𝐷)) = ∅)
23	7, 22	eqtrd 2796	. 2 ⊢ ((𝜑 ∧ 𝐷 ∈ Cat) → (ZeroO‘𝐷) = ∅)
24	1, 2, 3, 23	initopropdlemlem 49821	1 ⊢ (𝜑 → (ZeroO‘𝐶) = (ZeroO‘𝐷))

Syntax hints:  ¬ wn 3   → wi 4   ∧ wa 399   = wceq 1559   ∈ wcel 2141  Vcvv 3453   ∩ cin 3901  ∅c0 4283  ‘cfv 6516  Basecbs 17236  Hom chom 17288  Catccat 17687  Hom_f chomf 17689  comp_fccomf 17690  InitOcinito 18005  TermOctermo 18006  ZeroOczeroo 18007

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1814  ax-4 1828  ax-5 1929  ax-6 1986  ax-7 2027  ax-8 2143  ax-9 2151  ax-10 2174  ax-11 2190  ax-12 2211  ax-ext 2733  ax-rep 5224  ax-sep 5243  ax-nul 5253  ax-pow 5319  ax-pr 5387  ax-un 7713

This theorem depends on definitions:  df-bi 209  df-an 400  df-or 859  df-3an 1099  df-tru 1562  df-fal 1572  df-ex 1799  df-nf 1803  df-sb 2090  df-mo 2565  df-eu 2595  df-clab 2740  df-cleq 2753  df-clel 2836  df-nfc 2910  df-ne 2957  df-ral 3076  df-rex 3086  df-reu 3367  df-rab 3414  df-v 3455  df-sbc 3743  df-csb 3851  df-dif 3905  df-un 3907  df-in 3909  df-ss 3919  df-nul 4284  df-if 4478  df-pw 4554  df-sn 4580  df-pr 4582  df-op 4586  df-uni 4863  df-iun 4948  df-br 5098  df-opab 5160  df-mpt 5179  df-id 5538  df-xp 5649  df-rel 5650  df-cnv 5651  df-co 5652  df-dm 5653  df-rn 5654  df-res 5655  df-ima 5656  df-iota 6472  df-fun 6518  df-fn 6519  df-f 6520  df-f1 6521  df-fo 6522  df-f1o 6523  df-fv 6524  df-ov 7394  df-oprab 7395  df-mpo 7396  df-1st 7965  df-2nd 7966  df-homf 17693  df-inito 18008  df-termo 18009  df-zeroo 18010

This theorem is referenced by:  zeroopropd  49827