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Theorem rrxmvallem 25153

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 768	. . . . . . . . . 10 ⊢ ((((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) ∧ ((𝐹‘𝑥) = 0 ∧ (𝐺‘𝑥) = 0)) → (𝐹‘𝑥) = 0)
2		0cn 11211	. . . . . . . . . 10 ⊢ 0 ∈ ℂ
3	1, 2	eqeltrdi 2840	. . . . . . . . 9 ⊢ ((((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) ∧ ((𝐹‘𝑥) = 0 ∧ (𝐺‘𝑥) = 0)) → (𝐹‘𝑥) ∈ ℂ)
4		simprr 770	. . . . . . . . . 10 ⊢ ((((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) ∧ ((𝐹‘𝑥) = 0 ∧ (𝐺‘𝑥) = 0)) → (𝐺‘𝑥) = 0)
5	1, 4	eqtr4d 2774	. . . . . . . . 9 ⊢ ((((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) ∧ ((𝐹‘𝑥) = 0 ∧ (𝐺‘𝑥) = 0)) → (𝐹‘𝑥) = (𝐺‘𝑥))
6	3, 5	subeq0bd 11645	. . . . . . . 8 ⊢ ((((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) ∧ ((𝐹‘𝑥) = 0 ∧ (𝐺‘𝑥) = 0)) → ((𝐹‘𝑥) − (𝐺‘𝑥)) = 0)
7	6	sq0id 14163	. . . . . . 7 ⊢ ((((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) ∧ ((𝐹‘𝑥) = 0 ∧ (𝐺‘𝑥) = 0)) → (((𝐹‘𝑥) − (𝐺‘𝑥))↑2) = 0)
8	7	ex 412	. . . . . 6 ⊢ (((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) → (((𝐹‘𝑥) = 0 ∧ (𝐺‘𝑥) = 0) → (((𝐹‘𝑥) − (𝐺‘𝑥))↑2) = 0))
9		ioran 981	. . . . . . . 8 ⊢ (¬ ((𝐹‘𝑥) ≠ 0 ∨ (𝐺‘𝑥) ≠ 0) ↔ (¬ (𝐹‘𝑥) ≠ 0 ∧ ¬ (𝐺‘𝑥) ≠ 0))
10		nne 2943	. . . . . . . . 9 ⊢ (¬ (𝐹‘𝑥) ≠ 0 ↔ (𝐹‘𝑥) = 0)
11		nne 2943	. . . . . . . . 9 ⊢ (¬ (𝐺‘𝑥) ≠ 0 ↔ (𝐺‘𝑥) = 0)
12	10, 11	anbi12i 626	. . . . . . . 8 ⊢ ((¬ (𝐹‘𝑥) ≠ 0 ∧ ¬ (𝐺‘𝑥) ≠ 0) ↔ ((𝐹‘𝑥) = 0 ∧ (𝐺‘𝑥) = 0))
13	9, 12	bitri 275	. . . . . . 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 2732	. . . . . . . . . 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 484	. . . . . . . . . . . . 13 ⊢ ((((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) ∧ 𝑘 = 𝑥) → 𝑘 = 𝑥)
17	16	fveq2d 6895	. . . . . . . . . . . 12 ⊢ ((((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) ∧ 𝑘 = 𝑥) → (𝐹‘𝑘) = (𝐹‘𝑥))
18	16	fveq2d 6895	. . . . . . . . . . . 12 ⊢ ((((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) ∧ 𝑘 = 𝑥) → (𝐺‘𝑘) = (𝐺‘𝑥))
19	17, 18	oveq12d 7430	. . . . . . . . . . 11 ⊢ ((((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) ∧ 𝑘 = 𝑥) → ((𝐹‘𝑘) − (𝐺‘𝑘)) = ((𝐹‘𝑥) − (𝐺‘𝑥)))
20	19	oveq1d 7427	. . . . . . . . . 10 ⊢ ((((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) ∧ 𝑘 = 𝑥) → (((𝐹‘𝑘) − (𝐺‘𝑘))↑2) = (((𝐹‘𝑥) − (𝐺‘𝑥))↑2))
21		simpr 484	. . . . . . . . . 10 ⊢ (((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) ∧ 𝑥 ∈ 𝐼) → 𝑥 ∈ 𝐼)
22		ovex 7445	. . . . . . . . . . 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 7005	. . . . . . . . 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 2999	. . . . . . . 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 2979	. . . . . 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 294	. . . . 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 4073	. . 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 4305	. . 3 ⊢ ({𝑥 ∈ 𝐼 ∣ (𝐹‘𝑥) ≠ 0} ∪ {𝑥 ∈ 𝐼 ∣ (𝐺‘𝑥) ≠ 0}) = {𝑥 ∈ 𝐼 ∣ ((𝐹‘𝑥) ≠ 0 ∨ (𝐺‘𝑥) ≠ 0)}
32	30, 31	sseqtrrdi 4033	. 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 1135	. . 3 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) → 𝐼 ∈ 𝑉)
34		ovex 7445	. . . . 5 ⊢ (((𝐹‘𝑘) − (𝐺‘𝑘))↑2) ∈ V
35		eqid 2731	. . . . 5 ⊢ (𝑘 ∈ 𝐼 ↦ (((𝐹‘𝑘) − (𝐺‘𝑘))↑2)) = (𝑘 ∈ 𝐼 ↦ (((𝐹‘𝑘) − (𝐺‘𝑘))↑2))
36	34, 35	fnmpti 6693	. . . 4 ⊢ (𝑘 ∈ 𝐼 ↦ (((𝐹‘𝑘) − (𝐺‘𝑘))↑2)) Fn 𝐼
37		suppvalfn 8158	. . . 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 1451	. . 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 3677	. . . . . . 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 2850	. . . . . 6 ⊢ (𝐹 ∈ 𝑋 → 𝐹 ∈ (ℝ ↑_m 𝐼))
43		elmapi 8847	. . . . . 6 ⊢ (𝐹 ∈ (ℝ ↑_m 𝐼) → 𝐹:𝐼⟶ℝ)
44		ffn 6717	. . . . . 6 ⊢ (𝐹:𝐼⟶ℝ → 𝐹 Fn 𝐼)
45	42, 43, 44	3syl 18	. . . . 5 ⊢ (𝐹 ∈ 𝑋 → 𝐹 Fn 𝐼)
46	45	3ad2ant2 1133	. . . 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 8158	. . . 4 ⊢ ((𝐹 Fn 𝐼 ∧ 𝐼 ∈ 𝑉 ∧ 0 ∈ ℂ) → (𝐹 supp 0) = {𝑥 ∈ 𝐼 ∣ (𝐹‘𝑥) ≠ 0})
49	46, 33, 47, 48	syl3anc 1370	. . 3 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) → (𝐹 supp 0) = {𝑥 ∈ 𝐼 ∣ (𝐹‘𝑥) ≠ 0})
50		elrabi 3677	. . . . . . 7 ⊢ (𝐺 ∈ {ℎ ∈ (ℝ ↑_m 𝐼) ∣ ℎ finSupp 0} → 𝐺 ∈ (ℝ ↑_m 𝐼))
51	50, 41	eleq2s 2850	. . . . . 6 ⊢ (𝐺 ∈ 𝑋 → 𝐺 ∈ (ℝ ↑_m 𝐼))
52		elmapi 8847	. . . . . 6 ⊢ (𝐺 ∈ (ℝ ↑_m 𝐼) → 𝐺:𝐼⟶ℝ)
53		ffn 6717	. . . . . 6 ⊢ (𝐺:𝐼⟶ℝ → 𝐺 Fn 𝐼)
54	51, 52, 53	3syl 18	. . . . 5 ⊢ (𝐺 ∈ 𝑋 → 𝐺 Fn 𝐼)
55	54	3ad2ant3 1134	. . . 4 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) → 𝐺 Fn 𝐼)
56		suppvalfn 8158	. . . 4 ⊢ ((𝐺 Fn 𝐼 ∧ 𝐼 ∈ 𝑉 ∧ 0 ∈ ℂ) → (𝐺 supp 0) = {𝑥 ∈ 𝐼 ∣ (𝐺‘𝑥) ≠ 0})
57	55, 33, 47, 56	syl3anc 1370	. . 3 ⊢ ((𝐼 ∈ 𝑉 ∧ 𝐹 ∈ 𝑋 ∧ 𝐺 ∈ 𝑋) → (𝐺 supp 0) = {𝑥 ∈ 𝐼 ∣ (𝐺‘𝑥) ≠ 0})
58	49, 57	uneq12d 4164	. 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 4029	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 395 ∨ wo 844 ∧ w3a 1086 = wceq 1540 ∈ wcel 2105 ≠ wne 2939 {crab 3431 Vcvv 3473 ∪ cun 3946 ⊆ wss 3948 class class class wbr 5148 ↦ cmpt 5231 Fn wfn 6538 ⟶wf 6539 ‘cfv 6543 (class class class)co 7412 supp csupp 8150 ↑_m cmap 8824 finSupp cfsupp 9365 ℂcc 11112 ℝcr 11113 0cc0 11114 − cmin 11449 2c2 12272 ↑cexp 14032

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1912 ax-6 1970 ax-7 2010 ax-8 2107 ax-9 2115 ax-10 2136 ax-11 2153 ax-12 2170 ax-ext 2702 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7729 ax-cnex 11170 ax-resscn 11171 ax-1cn 11172 ax-icn 11173 ax-addcl 11174 ax-addrcl 11175 ax-mulcl 11176 ax-mulrcl 11177 ax-mulcom 11178 ax-addass 11179 ax-mulass 11180 ax-distr 11181 ax-i2m1 11182 ax-1ne0 11183 ax-1rid 11184 ax-rnegex 11185 ax-rrecex 11186 ax-cnre 11187 ax-pre-lttri 11188 ax-pre-lttrn 11189 ax-pre-ltadd 11190 ax-pre-mulgt0 11191

This theorem depends on definitions: df-bi 206 df-an 396 df-or 845 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1781 df-nf 1785 df-sb 2067 df-mo 2533 df-eu 2562 df-clab 2709 df-cleq 2723 df-clel 2809 df-nfc 2884 df-ne 2940 df-nel 3046 df-ral 3061 df-rex 3070 df-reu 3376 df-rab 3432 df-v 3475 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-pss 3967 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-op 4635 df-uni 4909 df-iun 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5574 df-eprel 5580 df-po 5588 df-so 5589 df-fr 5631 df-we 5633 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-pred 6300 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6495 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7368 df-ov 7415 df-oprab 7416 df-mpo 7417 df-om 7860 df-1st 7979 df-2nd 7980 df-supp 8151 df-frecs 8270 df-wrecs 8301 df-recs 8375 df-rdg 8414 df-er 8707 df-map 8826 df-en 8944 df-dom 8945 df-sdom 8946 df-pnf 11255 df-mnf 11256 df-xr 11257 df-ltxr 11258 df-le 11259 df-sub 11451 df-neg 11452 df-nn 12218 df-2 12280 df-n0 12478 df-z 12564 df-uz 12828 df-seq 13972 df-exp 14033

This theorem is referenced by: rrxmval 25154

W3C validator