Theorem isnvlem 28873

Description: Lemma for isnv 28875. (Contributed by NM, 11-Nov-2006.) (New usage is discouraged.)

Hypotheses

Ref	Expression
isnvlem.1	⊢ 𝑋 = ran 𝐺
isnvlem.2	⊢ 𝑍 = (GId‘𝐺)

Assertion

Ref	Expression
isnvlem	⊢ ((𝐺 ∈ V ∧ 𝑆 ∈ V ∧ 𝑁 ∈ V) → (⟨⟨𝐺, 𝑆⟩, 𝑁⟩ ∈ NrmCVec ↔ (⟨𝐺, 𝑆⟩ ∈ CVecOLD ∧ 𝑁:𝑋⟶ℝ ∧ ∀𝑥 ∈ 𝑋 (((𝑁‘𝑥) = 0 → 𝑥 = 𝑍) ∧ ∀𝑦 ∈ ℂ (𝑁‘(𝑦𝑆𝑥)) = ((abs‘𝑦) · (𝑁‘𝑥)) ∧ ∀𝑦 ∈ 𝑋 (𝑁‘(𝑥𝐺𝑦)) ≤ ((𝑁‘𝑥) + (𝑁‘𝑦))))))

Distinct variable groups:   𝑥,𝑦,𝐺   𝑥,𝑁,𝑦   𝑥,𝑆,𝑦   𝑥,𝑋,𝑦

Allowed substitution hints:   𝑍(𝑥,𝑦)

Proof of Theorem isnvlem

Dummy variables 𝑔 𝑛 𝑠 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		df-nv 28855	. . 3 ⊢ NrmCVec = {⟨⟨𝑔, 𝑠⟩, 𝑛⟩ ∣ (⟨𝑔, 𝑠⟩ ∈ CVecOLD ∧ 𝑛:ran 𝑔⟶ℝ ∧ ∀𝑥 ∈ ran 𝑔(((𝑛‘𝑥) = 0 → 𝑥 = (GId‘𝑔)) ∧ ∀𝑦 ∈ ℂ (𝑛‘(𝑦𝑠𝑥)) = ((abs‘𝑦) · (𝑛‘𝑥)) ∧ ∀𝑦 ∈ ran 𝑔(𝑛‘(𝑥𝑔𝑦)) ≤ ((𝑛‘𝑥) + (𝑛‘𝑦))))}
2	1	eleq2i 2830	. 2 ⊢ (⟨⟨𝐺, 𝑆⟩, 𝑁⟩ ∈ NrmCVec ↔ ⟨⟨𝐺, 𝑆⟩, 𝑁⟩ ∈ {⟨⟨𝑔, 𝑠⟩, 𝑛⟩ ∣ (⟨𝑔, 𝑠⟩ ∈ CVecOLD ∧ 𝑛:ran 𝑔⟶ℝ ∧ ∀𝑥 ∈ ran 𝑔(((𝑛‘𝑥) = 0 → 𝑥 = (GId‘𝑔)) ∧ ∀𝑦 ∈ ℂ (𝑛‘(𝑦𝑠𝑥)) = ((abs‘𝑦) · (𝑛‘𝑥)) ∧ ∀𝑦 ∈ ran 𝑔(𝑛‘(𝑥𝑔𝑦)) ≤ ((𝑛‘𝑥) + (𝑛‘𝑦))))})
3		opeq1 4801	. . . . 5 ⊢ (𝑔 = 𝐺 → ⟨𝑔, 𝑠⟩ = ⟨𝐺, 𝑠⟩)
4	3	eleq1d 2823	. . . 4 ⊢ (𝑔 = 𝐺 → (⟨𝑔, 𝑠⟩ ∈ CVecOLD ↔ ⟨𝐺, 𝑠⟩ ∈ CVecOLD))
5		rneq 5834	. . . . . 6 ⊢ (𝑔 = 𝐺 → ran 𝑔 = ran 𝐺)
6		isnvlem.1	. . . . . 6 ⊢ 𝑋 = ran 𝐺
7	5, 6	eqtr4di 2797	. . . . 5 ⊢ (𝑔 = 𝐺 → ran 𝑔 = 𝑋)
8	7	feq2d 6570	. . . 4 ⊢ (𝑔 = 𝐺 → (𝑛:ran 𝑔⟶ℝ ↔ 𝑛:𝑋⟶ℝ))
9		fveq2 6756	. . . . . . . . 9 ⊢ (𝑔 = 𝐺 → (GId‘𝑔) = (GId‘𝐺))
10		isnvlem.2	. . . . . . . . 9 ⊢ 𝑍 = (GId‘𝐺)
11	9, 10	eqtr4di 2797	. . . . . . . 8 ⊢ (𝑔 = 𝐺 → (GId‘𝑔) = 𝑍)
12	11	eqeq2d 2749	. . . . . . 7 ⊢ (𝑔 = 𝐺 → (𝑥 = (GId‘𝑔) ↔ 𝑥 = 𝑍))
13	12	imbi2d 340	. . . . . 6 ⊢ (𝑔 = 𝐺 → (((𝑛‘𝑥) = 0 → 𝑥 = (GId‘𝑔)) ↔ ((𝑛‘𝑥) = 0 → 𝑥 = 𝑍)))
14		oveq 7261	. . . . . . . . 9 ⊢ (𝑔 = 𝐺 → (𝑥𝑔𝑦) = (𝑥𝐺𝑦))
15	14	fveq2d 6760	. . . . . . . 8 ⊢ (𝑔 = 𝐺 → (𝑛‘(𝑥𝑔𝑦)) = (𝑛‘(𝑥𝐺𝑦)))
16	15	breq1d 5080	. . . . . . 7 ⊢ (𝑔 = 𝐺 → ((𝑛‘(𝑥𝑔𝑦)) ≤ ((𝑛‘𝑥) + (𝑛‘𝑦)) ↔ (𝑛‘(𝑥𝐺𝑦)) ≤ ((𝑛‘𝑥) + (𝑛‘𝑦))))
17	7, 16	raleqbidv 3327	. . . . . 6 ⊢ (𝑔 = 𝐺 → (∀𝑦 ∈ ran 𝑔(𝑛‘(𝑥𝑔𝑦)) ≤ ((𝑛‘𝑥) + (𝑛‘𝑦)) ↔ ∀𝑦 ∈ 𝑋 (𝑛‘(𝑥𝐺𝑦)) ≤ ((𝑛‘𝑥) + (𝑛‘𝑦))))
18	13, 17	3anbi13d 1436	. . . . 5 ⊢ (𝑔 = 𝐺 → ((((𝑛‘𝑥) = 0 → 𝑥 = (GId‘𝑔)) ∧ ∀𝑦 ∈ ℂ (𝑛‘(𝑦𝑠𝑥)) = ((abs‘𝑦) · (𝑛‘𝑥)) ∧ ∀𝑦 ∈ ran 𝑔(𝑛‘(𝑥𝑔𝑦)) ≤ ((𝑛‘𝑥) + (𝑛‘𝑦))) ↔ (((𝑛‘𝑥) = 0 → 𝑥 = 𝑍) ∧ ∀𝑦 ∈ ℂ (𝑛‘(𝑦𝑠𝑥)) = ((abs‘𝑦) · (𝑛‘𝑥)) ∧ ∀𝑦 ∈ 𝑋 (𝑛‘(𝑥𝐺𝑦)) ≤ ((𝑛‘𝑥) + (𝑛‘𝑦)))))
19	7, 18	raleqbidv 3327	. . . 4 ⊢ (𝑔 = 𝐺 → (∀𝑥 ∈ ran 𝑔(((𝑛‘𝑥) = 0 → 𝑥 = (GId‘𝑔)) ∧ ∀𝑦 ∈ ℂ (𝑛‘(𝑦𝑠𝑥)) = ((abs‘𝑦) · (𝑛‘𝑥)) ∧ ∀𝑦 ∈ ran 𝑔(𝑛‘(𝑥𝑔𝑦)) ≤ ((𝑛‘𝑥) + (𝑛‘𝑦))) ↔ ∀𝑥 ∈ 𝑋 (((𝑛‘𝑥) = 0 → 𝑥 = 𝑍) ∧ ∀𝑦 ∈ ℂ (𝑛‘(𝑦𝑠𝑥)) = ((abs‘𝑦) · (𝑛‘𝑥)) ∧ ∀𝑦 ∈ 𝑋 (𝑛‘(𝑥𝐺𝑦)) ≤ ((𝑛‘𝑥) + (𝑛‘𝑦)))))
20	4, 8, 19	3anbi123d 1434	. . 3 ⊢ (𝑔 = 𝐺 → ((⟨𝑔, 𝑠⟩ ∈ CVecOLD ∧ 𝑛:ran 𝑔⟶ℝ ∧ ∀𝑥 ∈ ran 𝑔(((𝑛‘𝑥) = 0 → 𝑥 = (GId‘𝑔)) ∧ ∀𝑦 ∈ ℂ (𝑛‘(𝑦𝑠𝑥)) = ((abs‘𝑦) · (𝑛‘𝑥)) ∧ ∀𝑦 ∈ ran 𝑔(𝑛‘(𝑥𝑔𝑦)) ≤ ((𝑛‘𝑥) + (𝑛‘𝑦)))) ↔ (⟨𝐺, 𝑠⟩ ∈ CVecOLD ∧ 𝑛:𝑋⟶ℝ ∧ ∀𝑥 ∈ 𝑋 (((𝑛‘𝑥) = 0 → 𝑥 = 𝑍) ∧ ∀𝑦 ∈ ℂ (𝑛‘(𝑦𝑠𝑥)) = ((abs‘𝑦) · (𝑛‘𝑥)) ∧ ∀𝑦 ∈ 𝑋 (𝑛‘(𝑥𝐺𝑦)) ≤ ((𝑛‘𝑥) + (𝑛‘𝑦))))))
21		opeq2 4802	. . . . 5 ⊢ (𝑠 = 𝑆 → ⟨𝐺, 𝑠⟩ = ⟨𝐺, 𝑆⟩)
22	21	eleq1d 2823	. . . 4 ⊢ (𝑠 = 𝑆 → (⟨𝐺, 𝑠⟩ ∈ CVecOLD ↔ ⟨𝐺, 𝑆⟩ ∈ CVecOLD))
23		oveq 7261	. . . . . . . 8 ⊢ (𝑠 = 𝑆 → (𝑦𝑠𝑥) = (𝑦𝑆𝑥))
24	23	fveqeq2d 6764	. . . . . . 7 ⊢ (𝑠 = 𝑆 → ((𝑛‘(𝑦𝑠𝑥)) = ((abs‘𝑦) · (𝑛‘𝑥)) ↔ (𝑛‘(𝑦𝑆𝑥)) = ((abs‘𝑦) · (𝑛‘𝑥))))
25	24	ralbidv 3120	. . . . . 6 ⊢ (𝑠 = 𝑆 → (∀𝑦 ∈ ℂ (𝑛‘(𝑦𝑠𝑥)) = ((abs‘𝑦) · (𝑛‘𝑥)) ↔ ∀𝑦 ∈ ℂ (𝑛‘(𝑦𝑆𝑥)) = ((abs‘𝑦) · (𝑛‘𝑥))))
26	25	3anbi2d 1439	. . . . 5 ⊢ (𝑠 = 𝑆 → ((((𝑛‘𝑥) = 0 → 𝑥 = 𝑍) ∧ ∀𝑦 ∈ ℂ (𝑛‘(𝑦𝑠𝑥)) = ((abs‘𝑦) · (𝑛‘𝑥)) ∧ ∀𝑦 ∈ 𝑋 (𝑛‘(𝑥𝐺𝑦)) ≤ ((𝑛‘𝑥) + (𝑛‘𝑦))) ↔ (((𝑛‘𝑥) = 0 → 𝑥 = 𝑍) ∧ ∀𝑦 ∈ ℂ (𝑛‘(𝑦𝑆𝑥)) = ((abs‘𝑦) · (𝑛‘𝑥)) ∧ ∀𝑦 ∈ 𝑋 (𝑛‘(𝑥𝐺𝑦)) ≤ ((𝑛‘𝑥) + (𝑛‘𝑦)))))
27	26	ralbidv 3120	. . . 4 ⊢ (𝑠 = 𝑆 → (∀𝑥 ∈ 𝑋 (((𝑛‘𝑥) = 0 → 𝑥 = 𝑍) ∧ ∀𝑦 ∈ ℂ (𝑛‘(𝑦𝑠𝑥)) = ((abs‘𝑦) · (𝑛‘𝑥)) ∧ ∀𝑦 ∈ 𝑋 (𝑛‘(𝑥𝐺𝑦)) ≤ ((𝑛‘𝑥) + (𝑛‘𝑦))) ↔ ∀𝑥 ∈ 𝑋 (((𝑛‘𝑥) = 0 → 𝑥 = 𝑍) ∧ ∀𝑦 ∈ ℂ (𝑛‘(𝑦𝑆𝑥)) = ((abs‘𝑦) · (𝑛‘𝑥)) ∧ ∀𝑦 ∈ 𝑋 (𝑛‘(𝑥𝐺𝑦)) ≤ ((𝑛‘𝑥) + (𝑛‘𝑦)))))
28	22, 27	3anbi13d 1436	. . 3 ⊢ (𝑠 = 𝑆 → ((⟨𝐺, 𝑠⟩ ∈ CVecOLD ∧ 𝑛:𝑋⟶ℝ ∧ ∀𝑥 ∈ 𝑋 (((𝑛‘𝑥) = 0 → 𝑥 = 𝑍) ∧ ∀𝑦 ∈ ℂ (𝑛‘(𝑦𝑠𝑥)) = ((abs‘𝑦) · (𝑛‘𝑥)) ∧ ∀𝑦 ∈ 𝑋 (𝑛‘(𝑥𝐺𝑦)) ≤ ((𝑛‘𝑥) + (𝑛‘𝑦)))) ↔ (⟨𝐺, 𝑆⟩ ∈ CVecOLD ∧ 𝑛:𝑋⟶ℝ ∧ ∀𝑥 ∈ 𝑋 (((𝑛‘𝑥) = 0 → 𝑥 = 𝑍) ∧ ∀𝑦 ∈ ℂ (𝑛‘(𝑦𝑆𝑥)) = ((abs‘𝑦) · (𝑛‘𝑥)) ∧ ∀𝑦 ∈ 𝑋 (𝑛‘(𝑥𝐺𝑦)) ≤ ((𝑛‘𝑥) + (𝑛‘𝑦))))))
29		feq1 6565	. . . 4 ⊢ (𝑛 = 𝑁 → (𝑛:𝑋⟶ℝ ↔ 𝑁:𝑋⟶ℝ))
30		fveq1 6755	. . . . . . . 8 ⊢ (𝑛 = 𝑁 → (𝑛‘𝑥) = (𝑁‘𝑥))
31	30	eqeq1d 2740	. . . . . . 7 ⊢ (𝑛 = 𝑁 → ((𝑛‘𝑥) = 0 ↔ (𝑁‘𝑥) = 0))
32	31	imbi1d 341	. . . . . 6 ⊢ (𝑛 = 𝑁 → (((𝑛‘𝑥) = 0 → 𝑥 = 𝑍) ↔ ((𝑁‘𝑥) = 0 → 𝑥 = 𝑍)))
33		fveq1 6755	. . . . . . . 8 ⊢ (𝑛 = 𝑁 → (𝑛‘(𝑦𝑆𝑥)) = (𝑁‘(𝑦𝑆𝑥)))
34	30	oveq2d 7271	. . . . . . . 8 ⊢ (𝑛 = 𝑁 → ((abs‘𝑦) · (𝑛‘𝑥)) = ((abs‘𝑦) · (𝑁‘𝑥)))
35	33, 34	eqeq12d 2754	. . . . . . 7 ⊢ (𝑛 = 𝑁 → ((𝑛‘(𝑦𝑆𝑥)) = ((abs‘𝑦) · (𝑛‘𝑥)) ↔ (𝑁‘(𝑦𝑆𝑥)) = ((abs‘𝑦) · (𝑁‘𝑥))))
36	35	ralbidv 3120	. . . . . 6 ⊢ (𝑛 = 𝑁 → (∀𝑦 ∈ ℂ (𝑛‘(𝑦𝑆𝑥)) = ((abs‘𝑦) · (𝑛‘𝑥)) ↔ ∀𝑦 ∈ ℂ (𝑁‘(𝑦𝑆𝑥)) = ((abs‘𝑦) · (𝑁‘𝑥))))
37		fveq1 6755	. . . . . . . 8 ⊢ (𝑛 = 𝑁 → (𝑛‘(𝑥𝐺𝑦)) = (𝑁‘(𝑥𝐺𝑦)))
38		fveq1 6755	. . . . . . . . 9 ⊢ (𝑛 = 𝑁 → (𝑛‘𝑦) = (𝑁‘𝑦))
39	30, 38	oveq12d 7273	. . . . . . . 8 ⊢ (𝑛 = 𝑁 → ((𝑛‘𝑥) + (𝑛‘𝑦)) = ((𝑁‘𝑥) + (𝑁‘𝑦)))
40	37, 39	breq12d 5083	. . . . . . 7 ⊢ (𝑛 = 𝑁 → ((𝑛‘(𝑥𝐺𝑦)) ≤ ((𝑛‘𝑥) + (𝑛‘𝑦)) ↔ (𝑁‘(𝑥𝐺𝑦)) ≤ ((𝑁‘𝑥) + (𝑁‘𝑦))))
41	40	ralbidv 3120	. . . . . 6 ⊢ (𝑛 = 𝑁 → (∀𝑦 ∈ 𝑋 (𝑛‘(𝑥𝐺𝑦)) ≤ ((𝑛‘𝑥) + (𝑛‘𝑦)) ↔ ∀𝑦 ∈ 𝑋 (𝑁‘(𝑥𝐺𝑦)) ≤ ((𝑁‘𝑥) + (𝑁‘𝑦))))
42	32, 36, 41	3anbi123d 1434	. . . . 5 ⊢ (𝑛 = 𝑁 → ((((𝑛‘𝑥) = 0 → 𝑥 = 𝑍) ∧ ∀𝑦 ∈ ℂ (𝑛‘(𝑦𝑆𝑥)) = ((abs‘𝑦) · (𝑛‘𝑥)) ∧ ∀𝑦 ∈ 𝑋 (𝑛‘(𝑥𝐺𝑦)) ≤ ((𝑛‘𝑥) + (𝑛‘𝑦))) ↔ (((𝑁‘𝑥) = 0 → 𝑥 = 𝑍) ∧ ∀𝑦 ∈ ℂ (𝑁‘(𝑦𝑆𝑥)) = ((abs‘𝑦) · (𝑁‘𝑥)) ∧ ∀𝑦 ∈ 𝑋 (𝑁‘(𝑥𝐺𝑦)) ≤ ((𝑁‘𝑥) + (𝑁‘𝑦)))))
43	42	ralbidv 3120	. . . 4 ⊢ (𝑛 = 𝑁 → (∀𝑥 ∈ 𝑋 (((𝑛‘𝑥) = 0 → 𝑥 = 𝑍) ∧ ∀𝑦 ∈ ℂ (𝑛‘(𝑦𝑆𝑥)) = ((abs‘𝑦) · (𝑛‘𝑥)) ∧ ∀𝑦 ∈ 𝑋 (𝑛‘(𝑥𝐺𝑦)) ≤ ((𝑛‘𝑥) + (𝑛‘𝑦))) ↔ ∀𝑥 ∈ 𝑋 (((𝑁‘𝑥) = 0 → 𝑥 = 𝑍) ∧ ∀𝑦 ∈ ℂ (𝑁‘(𝑦𝑆𝑥)) = ((abs‘𝑦) · (𝑁‘𝑥)) ∧ ∀𝑦 ∈ 𝑋 (𝑁‘(𝑥𝐺𝑦)) ≤ ((𝑁‘𝑥) + (𝑁‘𝑦)))))
44	29, 43	3anbi23d 1437	. . 3 ⊢ (𝑛 = 𝑁 → ((⟨𝐺, 𝑆⟩ ∈ CVecOLD ∧ 𝑛:𝑋⟶ℝ ∧ ∀𝑥 ∈ 𝑋 (((𝑛‘𝑥) = 0 → 𝑥 = 𝑍) ∧ ∀𝑦 ∈ ℂ (𝑛‘(𝑦𝑆𝑥)) = ((abs‘𝑦) · (𝑛‘𝑥)) ∧ ∀𝑦 ∈ 𝑋 (𝑛‘(𝑥𝐺𝑦)) ≤ ((𝑛‘𝑥) + (𝑛‘𝑦)))) ↔ (⟨𝐺, 𝑆⟩ ∈ CVecOLD ∧ 𝑁:𝑋⟶ℝ ∧ ∀𝑥 ∈ 𝑋 (((𝑁‘𝑥) = 0 → 𝑥 = 𝑍) ∧ ∀𝑦 ∈ ℂ (𝑁‘(𝑦𝑆𝑥)) = ((abs‘𝑦) · (𝑁‘𝑥)) ∧ ∀𝑦 ∈ 𝑋 (𝑁‘(𝑥𝐺𝑦)) ≤ ((𝑁‘𝑥) + (𝑁‘𝑦))))))
45	20, 28, 44	eloprabg 7362	. 2 ⊢ ((𝐺 ∈ V ∧ 𝑆 ∈ V ∧ 𝑁 ∈ V) → (⟨⟨𝐺, 𝑆⟩, 𝑁⟩ ∈ {⟨⟨𝑔, 𝑠⟩, 𝑛⟩ ∣ (⟨𝑔, 𝑠⟩ ∈ CVecOLD ∧ 𝑛:ran 𝑔⟶ℝ ∧ ∀𝑥 ∈ ran 𝑔(((𝑛‘𝑥) = 0 → 𝑥 = (GId‘𝑔)) ∧ ∀𝑦 ∈ ℂ (𝑛‘(𝑦𝑠𝑥)) = ((abs‘𝑦) · (𝑛‘𝑥)) ∧ ∀𝑦 ∈ ran 𝑔(𝑛‘(𝑥𝑔𝑦)) ≤ ((𝑛‘𝑥) + (𝑛‘𝑦))))} ↔ (⟨𝐺, 𝑆⟩ ∈ CVecOLD ∧ 𝑁:𝑋⟶ℝ ∧ ∀𝑥 ∈ 𝑋 (((𝑁‘𝑥) = 0 → 𝑥 = 𝑍) ∧ ∀𝑦 ∈ ℂ (𝑁‘(𝑦𝑆𝑥)) = ((abs‘𝑦) · (𝑁‘𝑥)) ∧ ∀𝑦 ∈ 𝑋 (𝑁‘(𝑥𝐺𝑦)) ≤ ((𝑁‘𝑥) + (𝑁‘𝑦))))))
46	2, 45	syl5bb 282	1 ⊢ ((𝐺 ∈ V ∧ 𝑆 ∈ V ∧ 𝑁 ∈ V) → (⟨⟨𝐺, 𝑆⟩, 𝑁⟩ ∈ NrmCVec ↔ (⟨𝐺, 𝑆⟩ ∈ CVecOLD ∧ 𝑁:𝑋⟶ℝ ∧ ∀𝑥 ∈ 𝑋 (((𝑁‘𝑥) = 0 → 𝑥 = 𝑍) ∧ ∀𝑦 ∈ ℂ (𝑁‘(𝑦𝑆𝑥)) = ((abs‘𝑦) · (𝑁‘𝑥)) ∧ ∀𝑦 ∈ 𝑋 (𝑁‘(𝑥𝐺𝑦)) ≤ ((𝑁‘𝑥) + (𝑁‘𝑦))))))

Syntax hints:   → wi 4   ↔ wb 205   ∧ w3a 1085   = wceq 1539   ∈ wcel 2108  ∀wral 3063  Vcvv 3422  ⟨cop 4564   class class class wbr 5070  ran crn 5581  ⟶wf 6414  ‘cfv 6418  (class class class)co 7255  {coprab 7256  ℂcc 10800  ℝcr 10801  0cc0 10802   + caddc 10805   · cmul 10807   ≤ cle 10941  abscabs 14873  GIdcgi 28753  CVec_OLDcvc 28821  NrmCVeccnv 28847

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1799  ax-4 1813  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2110  ax-9 2118  ax-12 2173  ax-ext 2709  ax-sep 5218  ax-nul 5225  ax-pr 5347

This theorem depends on definitions:  df-bi 206  df-an 396  df-or 844  df-3an 1087  df-tru 1542  df-fal 1552  df-ex 1784  df-sb 2069  df-clab 2716  df-cleq 2730  df-clel 2817  df-ral 3068  df-rab 3072  df-v 3424  df-dif 3886  df-un 3888  df-in 3890  df-ss 3900  df-nul 4254  df-if 4457  df-sn 4559  df-pr 4561  df-op 4565  df-uni 4837  df-br 5071  df-opab 5133  df-rel 5587  df-cnv 5588  df-co 5589  df-dm 5590  df-rn 5591  df-iota 6376  df-fun 6420  df-fn 6421  df-f 6422  df-fv 6426  df-ov 7258  df-oprab 7259  df-nv 28855

This theorem is referenced by:  isnv  28875