Theorem zeroopropdlem 49900

Description: Lemma for zeroopropd 49903. (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 18042	. 2 ⊢ ZeroO Fn Cat
2		initopropdlem.1	. 2 ⊢ (𝜑 → ¬ 𝐶 ∈ V)
3		ssv 3969	. 2 ⊢ Cat ⊆ V
4		simpr 489	. . . 4 ⊢ ((𝜑 ∧ 𝐷 ∈ Cat) → 𝐷 ∈ Cat)
5		eqid 2769	. . . 4 ⊢ (Base‘𝐷) = (Base‘𝐷)
6		eqid 2769	. . . 4 ⊢ (Hom ‘𝐷) = (Hom ‘𝐷)
7	4, 5, 6	zerooval 18048	. . 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 49898	. . . . . . 7 ⊢ (𝜑 → (InitO‘𝐶) = (InitO‘𝐷))
11		fvprc 6871	. . . . . . . 8 ⊢ (¬ 𝐶 ∈ V → (InitO‘𝐶) = ∅)
12	2, 11	syl 18	. . . . . . 7 ⊢ (𝜑 → (InitO‘𝐶) = ∅)
13	10, 12	eqtr3d 2806	. . . . . 6 ⊢ (𝜑 → (InitO‘𝐷) = ∅)
14	13	adantr 485	. . . . 5 ⊢ ((𝜑 ∧ 𝐷 ∈ Cat) → (InitO‘𝐷) = ∅)
15	8, 9, 2	termopropdlem 49899	. . . . . . 7 ⊢ (𝜑 → (TermO‘𝐶) = (TermO‘𝐷))
16		fvprc 6871	. . . . . . . 8 ⊢ (¬ 𝐶 ∈ V → (TermO‘𝐶) = ∅)
17	2, 16	syl 18	. . . . . . 7 ⊢ (𝜑 → (TermO‘𝐶) = ∅)
18	15, 17	eqtr3d 2806	. . . . . 6 ⊢ (𝜑 → (TermO‘𝐷) = ∅)
19	18	adantr 485	. . . . 5 ⊢ ((𝜑 ∧ 𝐷 ∈ Cat) → (TermO‘𝐷) = ∅)
20	14, 19	ineq12d 4182	. . . 4 ⊢ ((𝜑 ∧ 𝐷 ∈ Cat) → ((InitO‘𝐷) ∩ (TermO‘𝐷)) = (∅ ∩ ∅))
21		inidm 4187	. . . 4 ⊢ (∅ ∩ ∅) = ∅
22	20, 21	eqtrdi 2820	. . 3 ⊢ ((𝜑 ∧ 𝐷 ∈ Cat) → ((InitO‘𝐷) ∩ (TermO‘𝐷)) = ∅)
23	7, 22	eqtrd 2804	. 2 ⊢ ((𝜑 ∧ 𝐷 ∈ Cat) → (ZeroO‘𝐷) = ∅)
24	1, 2, 3, 23	initopropdlemlem 49897	1 ⊢ (𝜑 → (ZeroO‘𝐶) = (ZeroO‘𝐷))

Syntax hints:  ¬ wn 3   → wi 4   ∧ wa 400   = wceq 1567   ∈ wcel 2149  Vcvv 3463   ∩ cin 3912  ∅c0 4294  ‘cfv 6534  Basecbs 17265  Hom chom 17317  Catccat 17716  Hom_f chomf 17718  comp_fccomf 17719  InitOcinito 18034  TermOctermo 18035  ZeroOczeroo 18036

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1822  ax-4 1836  ax-5 1937  ax-6 1994  ax-7 2035  ax-8 2151  ax-9 2159  ax-10 2182  ax-11 2198  ax-12 2219  ax-ext 2741  ax-rep 5239  ax-sep 5258  ax-nul 5268  ax-pow 5334  ax-pr 5402  ax-un 7730

This theorem depends on definitions:  df-bi 210  df-an 401  df-or 861  df-3an 1103  df-tru 1570  df-fal 1580  df-ex 1807  df-nf 1811  df-sb 2098  df-mo 2573  df-eu 2603  df-clab 2748  df-cleq 2761  df-clel 2844  df-nfc 2918  df-ne 2965  df-ral 3086  df-rex 3096  df-reu 3377  df-rab 3424  df-v 3465  df-sbc 3754  df-csb 3862  df-dif 3916  df-un 3918  df-in 3920  df-ss 3930  df-nul 4295  df-if 4490  df-pw 4566  df-sn 4592  df-pr 4594  df-op 4598  df-uni 4874  df-iun 4959  df-br 5111  df-opab 5175  df-mpt 5194  df-id 5554  df-xp 5665  df-rel 5666  df-cnv 5667  df-co 5668  df-dm 5669  df-rn 5670  df-res 5671  df-ima 5672  df-iota 6490  df-fun 6536  df-fn 6537  df-f 6538  df-f1 6539  df-fo 6540  df-f1o 6541  df-fv 6542  df-ov 7411  df-oprab 7412  df-mpo 7413  df-1st 7982  df-2nd 7983  df-homf 17722  df-inito 18037  df-termo 18038  df-zeroo 18039

This theorem is referenced by:  zeroopropd  49903