Theorem zeroopropdlem 49717

Description: Lemma for zeroopropd 49720. (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 17956	. 2 ⊢ ZeroO Fn Cat
2		initopropdlem.1	. 2 ⊢ (𝜑 → ¬ 𝐶 ∈ V)
3		ssv 3946	. 2 ⊢ Cat ⊆ V
4		simpr 484	. . . 4 ⊢ ((𝜑 ∧ 𝐷 ∈ Cat) → 𝐷 ∈ Cat)
5		eqid 2736	. . . 4 ⊢ (Base‘𝐷) = (Base‘𝐷)
6		eqid 2736	. . . 4 ⊢ (Hom ‘𝐷) = (Hom ‘𝐷)
7	4, 5, 6	zerooval 17962	. . 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 49715	. . . . . . 7 ⊢ (𝜑 → (InitO‘𝐶) = (InitO‘𝐷))
11		fvprc 6832	. . . . . . . 8 ⊢ (¬ 𝐶 ∈ V → (InitO‘𝐶) = ∅)
12	2, 11	syl 17	. . . . . . 7 ⊢ (𝜑 → (InitO‘𝐶) = ∅)
13	10, 12	eqtr3d 2773	. . . . . 6 ⊢ (𝜑 → (InitO‘𝐷) = ∅)
14	13	adantr 480	. . . . 5 ⊢ ((𝜑 ∧ 𝐷 ∈ Cat) → (InitO‘𝐷) = ∅)
15	8, 9, 2	termopropdlem 49716	. . . . . . 7 ⊢ (𝜑 → (TermO‘𝐶) = (TermO‘𝐷))
16		fvprc 6832	. . . . . . . 8 ⊢ (¬ 𝐶 ∈ V → (TermO‘𝐶) = ∅)
17	2, 16	syl 17	. . . . . . 7 ⊢ (𝜑 → (TermO‘𝐶) = ∅)
18	15, 17	eqtr3d 2773	. . . . . 6 ⊢ (𝜑 → (TermO‘𝐷) = ∅)
19	18	adantr 480	. . . . 5 ⊢ ((𝜑 ∧ 𝐷 ∈ Cat) → (TermO‘𝐷) = ∅)
20	14, 19	ineq12d 4161	. . . 4 ⊢ ((𝜑 ∧ 𝐷 ∈ Cat) → ((InitO‘𝐷) ∩ (TermO‘𝐷)) = (∅ ∩ ∅))
21		inidm 4167	. . . 4 ⊢ (∅ ∩ ∅) = ∅
22	20, 21	eqtrdi 2787	. . 3 ⊢ ((𝜑 ∧ 𝐷 ∈ Cat) → ((InitO‘𝐷) ∩ (TermO‘𝐷)) = ∅)
23	7, 22	eqtrd 2771	. 2 ⊢ ((𝜑 ∧ 𝐷 ∈ Cat) → (ZeroO‘𝐷) = ∅)
24	1, 2, 3, 23	initopropdlemlem 49714	1 ⊢ (𝜑 → (ZeroO‘𝐶) = (ZeroO‘𝐷))

Syntax hints:  ¬ wn 3   → wi 4   ∧ wa 395   = wceq 1542   ∈ wcel 2114  Vcvv 3429   ∩ cin 3888  ∅c0 4273  ‘cfv 6498  Basecbs 17179  Hom chom 17231  Catccat 17630  Hom_f chomf 17632  comp_fccomf 17633  InitOcinito 17948  TermOctermo 17949  ZeroOczeroo 17950

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 2708  ax-rep 5212  ax-sep 5231  ax-nul 5241  ax-pow 5307  ax-pr 5375  ax-un 7689

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 2539  df-eu 2569  df-clab 2715  df-cleq 2728  df-clel 2811  df-nfc 2885  df-ne 2933  df-ral 3052  df-rex 3062  df-reu 3343  df-rab 3390  df-v 3431  df-sbc 3729  df-csb 3838  df-dif 3892  df-un 3894  df-in 3896  df-ss 3906  df-nul 4274  df-if 4467  df-pw 4543  df-sn 4568  df-pr 4570  df-op 4574  df-uni 4851  df-iun 4935  df-br 5086  df-opab 5148  df-mpt 5167  df-id 5526  df-xp 5637  df-rel 5638  df-cnv 5639  df-co 5640  df-dm 5641  df-rn 5642  df-res 5643  df-ima 5644  df-iota 6454  df-fun 6500  df-fn 6501  df-f 6502  df-f1 6503  df-fo 6504  df-f1o 6505  df-fv 6506  df-ov 7370  df-oprab 7371  df-mpo 7372  df-1st 7942  df-2nd 7943  df-homf 17636  df-inito 17951  df-termo 17952  df-zeroo 17953

This theorem is referenced by:  zeroopropd  49720