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Theorem rrxmvallem 25152

Description: Support of the function used for building the distance . (Contributed by Thierry Arnoux, 30-Jun-2019.)

**Hypothesis**
Ref	Expression
rrxmval.1	⊢ 𝑋 = {ℎ ∈ (ℝ ↑_m 𝐼) ∣ ℎ finSupp 0}

**Assertion**
Ref	Expression
rrxmvallem	⊢ ((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) → ((𝑘 ∈ 𝐼 ↦ (((𝐹‘𝑘) − (𝐺‘𝑘))↑2)) supp 0) ⊆ ((𝐹 supp 0) ∪ (𝐺 supp 0)))

Distinct variable groups: ℎ,𝐹,𝑘 ℎ,𝐺,𝑘 ℎ,𝐼,𝑘 ℎ,𝑉,𝑘 𝑘,𝑋 Allowed substitution hint: 𝑋(ℎ)

Proof of Theorem rrxmvallem Dummy variable 𝑥 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		simprl 767	. . . . . . . . . 10 ⊢ ((((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) ∧ ((𝐹‘𝑥) = 0 ∧ (𝐺‘𝑥) = 0)) → (𝐹‘𝑥) = 0)
2		0cn 11210	. . . . . . . . . 10 ⊢ 0 ∈ ℂ
3	1, 2	eqeltrdi 2839	. . . . . . . . 9 ⊢ ((((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) ∧ ((𝐹‘𝑥) = 0 ∧ (𝐺‘𝑥) = 0)) → (𝐹‘𝑥) ∈ ℂ)
4		simprr 769	. . . . . . . . . 10 ⊢ ((((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) ∧ ((𝐹‘𝑥) = 0 ∧ (𝐺‘𝑥) = 0)) → (𝐺‘𝑥) = 0)
5	1, 4	eqtr4d 2773	. . . . . . . . 9 ⊢ ((((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) ∧ ((𝐹‘𝑥) = 0 ∧ (𝐺‘𝑥) = 0)) → (𝐹‘𝑥) = (𝐺‘𝑥))
6	3, 5	subeq0bd 11644	. . . . . . . 8 ⊢ ((((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) ∧ ((𝐹‘𝑥) = 0 ∧ (𝐺‘𝑥) = 0)) → ((𝐹‘𝑥) − (𝐺‘𝑥)) = 0)
7	6	sq0id 14162	. . . . . . 7 ⊢ ((((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) ∧ ((𝐹‘𝑥) = 0 ∧ (𝐺‘𝑥) = 0)) → (((𝐹‘𝑥) − (𝐺‘𝑥))↑2) = 0)
8	7	ex 411	. . . . . 6 ⊢ (((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) → (((𝐹‘𝑥) = 0 ∧ (𝐺‘𝑥) = 0) → (((𝐹‘𝑥) − (𝐺‘𝑥))↑2) = 0))
9		ioran 980	. . . . . . . 8 ⊢ (¬ ((𝐹‘𝑥) ≠ 0 ∨ (𝐺‘𝑥) ≠ 0) ↔ (¬ (𝐹‘𝑥) ≠ 0 ∧ ¬ (𝐺‘𝑥) ≠ 0))
10		nne 2942	. . . . . . . . 9 ⊢ (¬ (𝐹‘𝑥) ≠ 0 ↔ (𝐹‘𝑥) = 0)
11		nne 2942	. . . . . . . . 9 ⊢ (¬ (𝐺‘𝑥) ≠ 0 ↔ (𝐺‘𝑥) = 0)
12	10, 11	anbi12i 625	. . . . . . . 8 ⊢ ((¬ (𝐹‘𝑥) ≠ 0 ∧ ¬ (𝐺‘𝑥) ≠ 0) ↔ ((𝐹‘𝑥) = 0 ∧ (𝐺‘𝑥) = 0))
13	9, 12	bitri 274	. . . . . . 7 ⊢ (¬ ((𝐹‘𝑥) ≠ 0 ∨ (𝐺‘𝑥) ≠ 0) ↔ ((𝐹‘𝑥) = 0 ∧ (𝐺‘𝑥) = 0))
14	13	a1i 11	. . . . . 6 ⊢ (((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) → (¬ ((𝐹‘𝑥) ≠ 0 ∨ (𝐺‘𝑥) ≠ 0) ↔ ((𝐹‘𝑥) = 0 ∧ (𝐺‘𝑥) = 0)))
15		eqidd 2731	. . . . . . . . . 10 ⊢ (((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) → (𝑘 ∈ 𝐼 ↦ (((𝐹‘𝑘) − (𝐺‘𝑘))↑2)) = (𝑘 ∈ 𝐼 ↦ (((𝐹‘𝑘) − (𝐺‘𝑘))↑2)))
16		simpr 483	. . . . . . . . . . . . 13 ⊢ ((((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) ∧ 𝑘 = 𝑥) → 𝑘 = 𝑥)
17	16	fveq2d 6894	. . . . . . . . . . . 12 ⊢ ((((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) ∧ 𝑘 = 𝑥) → (𝐹‘𝑘) = (𝐹‘𝑥))
18	16	fveq2d 6894	. . . . . . . . . . . 12 ⊢ ((((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) ∧ 𝑘 = 𝑥) → (𝐺‘𝑘) = (𝐺‘𝑥))
19	17, 18	oveq12d 7429	. . . . . . . . . . 11 ⊢ ((((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) ∧ 𝑘 = 𝑥) → ((𝐹‘𝑘) − (𝐺‘𝑘)) = ((𝐹‘𝑥) − (𝐺‘𝑥)))
20	19	oveq1d 7426	. . . . . . . . . 10 ⊢ ((((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) ∧ 𝑘 = 𝑥) → (((𝐹‘𝑘) − (𝐺‘𝑘))↑2) = (((𝐹‘𝑥) − (𝐺‘𝑥))↑2))
21		simpr 483	. . . . . . . . . 10 ⊢ (((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) → 𝑥 ∈ 𝐼)
22		ovex 7444	. . . . . . . . . . 11 ⊢ (((𝐹‘𝑥) − (𝐺‘𝑥))↑2) ∈ V
23	22	a1i 11	. . . . . . . . . 10 ⊢ (((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) → (((𝐹‘𝑥) − (𝐺‘𝑥))↑2) ∈ V)
24	15, 20, 21, 23	fvmptd 7004	. . . . . . . . 9 ⊢ (((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) → ((𝑘 ∈ 𝐼 ↦ (((𝐹‘𝑘) − (𝐺‘𝑘))↑2))‘𝑥) = (((𝐹‘𝑥) − (𝐺‘𝑥))↑2))
25	24	neeq1d 2998	. . . . . . . 8 ⊢ (((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) → (((𝑘 ∈ 𝐼 ↦ (((𝐹‘𝑘) − (𝐺‘𝑘))↑2))‘𝑥) ≠ 0 ↔ (((𝐹‘𝑥) − (𝐺‘𝑥))↑2) ≠ 0))
26	25	bicomd 222	. . . . . . 7 ⊢ (((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) → ((((𝐹‘𝑥) − (𝐺‘𝑥))↑2) ≠ 0 ↔ ((𝑘 ∈ 𝐼 ↦ (((𝐹‘𝑘) − (𝐺‘𝑘))↑2))‘𝑥) ≠ 0))
27	26	necon1bbid 2978	. . . . . 6 ⊢ (((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) → (¬ ((𝑘 ∈ 𝐼 ↦ (((𝐹‘𝑘) − (𝐺‘𝑘))↑2))‘𝑥) ≠ 0 ↔ (((𝐹‘𝑥) − (𝐺‘𝑥))↑2) = 0))
28	8, 14, 27	3imtr4d 293	. . . . 5 ⊢ (((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) → (¬ ((𝐹‘𝑥) ≠ 0 ∨ (𝐺‘𝑥) ≠ 0) → ¬ ((𝑘 ∈ 𝐼 ↦ (((𝐹‘𝑘) − (𝐺‘𝑘))↑2))‘𝑥) ≠ 0))
29	28	con4d 115	. . . 4 ⊢ (((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) → (((𝑘 ∈ 𝐼 ↦ (((𝐹‘𝑘) − (𝐺‘𝑘))↑2))‘𝑥) ≠ 0 → ((𝐹‘𝑥) ≠ 0 ∨ (𝐺‘𝑥) ≠ 0)))
30	29	ss2rabdv 4072	. . 3 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) → {𝑥 ∈ 𝐼 ∣ ((𝑘 ∈ 𝐼 ↦ (((𝐹‘𝑘) − (𝐺‘𝑘))↑2))‘𝑥) ≠ 0} ⊆ {𝑥 ∈ 𝐼 ∣ ((𝐹‘𝑥) ≠ 0 ∨ (𝐺‘𝑥) ≠ 0)})
31		unrab 4304	. . 3 ⊢ ({𝑥 ∈ 𝐼 ∣ (𝐹‘𝑥) ≠ 0} ∪ {𝑥 ∈ 𝐼 ∣ (𝐺‘𝑥) ≠ 0}) = {𝑥 ∈ 𝐼 ∣ ((𝐹‘𝑥) ≠ 0 ∨ (𝐺‘𝑥) ≠ 0)}
32	30, 31	sseqtrrdi 4032	. 2 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) → {𝑥 ∈ 𝐼 ∣ ((𝑘 ∈ 𝐼 ↦ (((𝐹‘𝑘) − (𝐺‘𝑘))↑2))‘𝑥) ≠ 0} ⊆ ({𝑥 ∈ 𝐼 ∣ (𝐹‘𝑥) ≠ 0} ∪ {𝑥 ∈ 𝐼 ∣ (𝐺‘𝑥) ≠ 0}))
33		simp1 1134	. . 3 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) → 𝐼 ∈ 𝑉)
34		ovex 7444	. . . . 5 ⊢ (((𝐹‘𝑘) − (𝐺‘𝑘))↑2) ∈ V
35		eqid 2730	. . . . 5 ⊢ (𝑘 ∈ 𝐼 ↦ (((𝐹‘𝑘) − (𝐺‘𝑘))↑2)) = (𝑘 ∈ 𝐼 ↦ (((𝐹‘𝑘) − (𝐺‘𝑘))↑2))
36	34, 35	fnmpti 6692	. . . 4 ⊢ (𝑘 ∈ 𝐼 ↦ (((𝐹‘𝑘) − (𝐺‘𝑘))↑2)) Fn 𝐼
37		suppvalfn 8156	. . . 4 ⊢ (((𝑘 ∈ 𝐼 ↦ (((𝐹‘𝑘) − (𝐺‘𝑘))↑2)) Fn 𝐼 ∧ 𝐼 ∈ 𝑉 ∧ 0 ∈ ℂ) → ((𝑘 ∈ 𝐼 ↦ (((𝐹‘𝑘) − (𝐺‘𝑘))↑2)) supp 0) = {𝑥 ∈ 𝐼 ∣ ((𝑘 ∈ 𝐼 ↦ (((𝐹‘𝑘) − (𝐺‘𝑘))↑2))‘𝑥) ≠ 0})
38	36, 2, 37	mp3an13 1450	. . 3 ⊢ (𝐼 ∈ 𝑉 → ((𝑘 ∈ 𝐼 ↦ (((𝐹‘𝑘) − (𝐺‘𝑘))↑2)) supp 0) = {𝑥 ∈ 𝐼 ∣ ((𝑘 ∈ 𝐼 ↦ (((𝐹‘𝑘) − (𝐺‘𝑘))↑2))‘𝑥) ≠ 0})
39	33, 38	syl 17	. 2 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) → ((𝑘 ∈ 𝐼 ↦ (((𝐹‘𝑘) − (𝐺‘𝑘))↑2)) supp 0) = {𝑥 ∈ 𝐼 ∣ ((𝑘 ∈ 𝐼 ↦ (((𝐹‘𝑘) − (𝐺‘𝑘))↑2))‘𝑥) ≠ 0})
40		elrabi 3676	. . . . . . 7 ⊢ (𝐹 ∈ {ℎ ∈ (ℝ ↑_m 𝐼) ∣ ℎ finSupp 0} → 𝐹 ∈ (ℝ ↑_m 𝐼))
41		rrxmval.1	. . . . . . 7 ⊢ 𝑋 = {ℎ ∈ (ℝ ↑_m 𝐼) ∣ ℎ finSupp 0}
42	40, 41	eleq2s 2849	. . . . . 6 ⊢ (𝐹 ∈ 𝑋 → 𝐹 ∈ (ℝ ↑_m 𝐼))
43		elmapi 8845	. . . . . 6 ⊢ (𝐹 ∈ (ℝ ↑_m 𝐼) → 𝐹:𝐼⟶ℝ)
44		ffn 6716	. . . . . 6 ⊢ (𝐹:𝐼⟶ℝ → 𝐹 Fn 𝐼)
45	42, 43, 44	3syl 18	. . . . 5 ⊢ (𝐹 ∈ 𝑋 → 𝐹 Fn 𝐼)
46	45	3ad2ant2 1132	. . . 4 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) → 𝐹 Fn 𝐼)
47	2	a1i 11	. . . 4 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) → 0 ∈ ℂ)
48		suppvalfn 8156	. . . 4 ⊢ ((𝐹 Fn 𝐼 ∧ 𝐼 ∈ 𝑉 ∧ 0 ∈ ℂ) → (𝐹 supp 0) = {𝑥 ∈ 𝐼 ∣ (𝐹‘𝑥) ≠ 0})
49	46, 33, 47, 48	syl3anc 1369	. . 3 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) → (𝐹 supp 0) = {𝑥 ∈ 𝐼 ∣ (𝐹‘𝑥) ≠ 0})
50		elrabi 3676	. . . . . . 7 ⊢ (𝐺 ∈ {ℎ ∈ (ℝ ↑_m 𝐼) ∣ ℎ finSupp 0} → 𝐺 ∈ (ℝ ↑_m 𝐼))
51	50, 41	eleq2s 2849	. . . . . 6 ⊢ (𝐺 ∈ 𝑋 → 𝐺 ∈ (ℝ ↑_m 𝐼))
52		elmapi 8845	. . . . . 6 ⊢ (𝐺 ∈ (ℝ ↑_m 𝐼) → 𝐺:𝐼⟶ℝ)
53		ffn 6716	. . . . . 6 ⊢ (𝐺:𝐼⟶ℝ → 𝐺 Fn 𝐼)
54	51, 52, 53	3syl 18	. . . . 5 ⊢ (𝐺 ∈ 𝑋 → 𝐺 Fn 𝐼)
55	54	3ad2ant3 1133	. . . 4 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) → 𝐺 Fn 𝐼)
56		suppvalfn 8156	. . . 4 ⊢ ((𝐺 Fn 𝐼 ∧ 𝐼 ∈ 𝑉 ∧ 0 ∈ ℂ) → (𝐺 supp 0) = {𝑥 ∈ 𝐼 ∣ (𝐺‘𝑥) ≠ 0})
57	55, 33, 47, 56	syl3anc 1369	. . 3 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) → (𝐺 supp 0) = {𝑥 ∈ 𝐼 ∣ (𝐺‘𝑥) ≠ 0})
58	49, 57	uneq12d 4163	. 2 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) → ((𝐹 supp 0) ∪ (𝐺 supp 0)) = ({𝑥 ∈ 𝐼 ∣ (𝐹‘𝑥) ≠ 0} ∪ {𝑥 ∈ 𝐼 ∣ (𝐺‘𝑥) ≠ 0}))
59	32, 39, 58	3sstr4d 4028	1 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) → ((𝑘 ∈ 𝐼 ↦ (((𝐹‘𝑘) − (𝐺‘𝑘))↑2)) supp 0) ⊆ ((𝐹 supp 0) ∪ (𝐺 supp 0)))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ↔ wb 205 ∧ wa 394 ∨ wo 843 ∧ w3a 1085 = wceq 1539 ∈ wcel 2104 ≠ wne 2938 {crab 3430 Vcvv 3472 ∪ cun 3945 ⊆ wss 3947 class class class wbr 5147 ↦ cmpt 5230 Fn wfn 6537 ⟶wf 6538 ‘cfv 6542 (class class class)co 7411 supp csupp 8148 ↑_m cmap 8822 finSupp cfsupp 9363 ℂcc 11110 ℝcr 11111 0cc0 11112 − cmin 11448 2c2 12271 ↑cexp 14031

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1911 ax-6 1969 ax-7 2009 ax-8 2106 ax-9 2114 ax-10 2135 ax-11 2152 ax-12 2169 ax-ext 2701 ax-rep 5284 ax-sep 5298 ax-nul 5305 ax-pow 5362 ax-pr 5426 ax-un 7727 ax-cnex 11168 ax-resscn 11169 ax-1cn 11170 ax-icn 11171 ax-addcl 11172 ax-addrcl 11173 ax-mulcl 11174 ax-mulrcl 11175 ax-mulcom 11176 ax-addass 11177 ax-mulass 11178 ax-distr 11179 ax-i2m1 11180 ax-1ne0 11181 ax-1rid 11182 ax-rnegex 11183 ax-rrecex 11184 ax-cnre 11185 ax-pre-lttri 11186 ax-pre-lttrn 11187 ax-pre-ltadd 11188 ax-pre-mulgt0 11189

This theorem depends on definitions: df-bi 206 df-an 395 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2532 df-eu 2561 df-clab 2708 df-cleq 2722 df-clel 2808 df-nfc 2883 df-ne 2939 df-nel 3045 df-ral 3060 df-rex 3069 df-reu 3375 df-rab 3431 df-v 3474 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4322 df-if 4528 df-pw 4603 df-sn 4628 df-pr 4630 df-op 4634 df-uni 4908 df-iun 4998 df-br 5148 df-opab 5210 df-mpt 5231 df-tr 5265 df-id 5573 df-eprel 5579 df-po 5587 df-so 5588 df-fr 5630 df-we 5632 df-xp 5681 df-rel 5682 df-cnv 5683 df-co 5684 df-dm 5685 df-rn 5686 df-res 5687 df-ima 5688 df-pred 6299 df-ord 6366 df-on 6367 df-lim 6368 df-suc 6369 df-iota 6494 df-fun 6544 df-fn 6545 df-f 6546 df-f1 6547 df-fo 6548 df-f1o 6549 df-fv 6550 df-riota 7367 df-ov 7414 df-oprab 7415 df-mpo 7416 df-om 7858 df-1st 7977 df-2nd 7978 df-supp 8149 df-frecs 8268 df-wrecs 8299 df-recs 8373 df-rdg 8412 df-er 8705 df-map 8824 df-en 8942 df-dom 8943 df-sdom 8944 df-pnf 11254 df-mnf 11255 df-xr 11256 df-ltxr 11257 df-le 11258 df-sub 11450 df-neg 11451 df-nn 12217 df-2 12279 df-n0 12477 df-z 12563 df-uz 12827 df-seq 13971 df-exp 14032

This theorem is referenced by: rrxmval 25153

W3C validator