Theorem climinfmpt 44417

Description: A bounded below, monotonic nonincreasing sequence converges to the infimum of its range. (Contributed by Glauco Siliprandi, 23-Oct-2021.)

Hypotheses

Ref	Expression
climinfmpt.p	⊢ Ⅎ𝑘𝜑
climinfmpt.j	⊢ Ⅎ𝑗𝜑
climinfmpt.m	⊢ (𝜑 → 𝑀 ∈ ℤ)
climinfmpt.z	⊢ 𝑍 = (ℤ≥‘𝑀)
climinfmpt.b	⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → 𝐵 ∈ ℝ)
climinfmpt.c	⊢ (𝑘 = 𝑗 → 𝐵 = 𝐶)
climinfmpt.l	⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍 ∧ 𝑗 = (𝑘 + 1)) → 𝐶 ≤ 𝐵)
climinfmpt.e	⊢ (𝜑 → ∃𝑥 ∈ ℝ ∀𝑘 ∈ 𝑍 𝑥 ≤ 𝐵)

Assertion

Ref	Expression
climinfmpt	⊢ (𝜑 → (𝑘 ∈ 𝑍 ↦ 𝐵) ⇝ inf(ran (𝑘 ∈ 𝑍 ↦ 𝐵), ℝ*, < ))

Distinct variable groups:   𝐵,𝑗   𝑥,𝐵   𝐶,𝑘   𝑗,𝑍,𝑘   𝑥,𝑍,𝑘

Allowed substitution hints:   𝜑(𝑥,𝑗,𝑘)   𝐵(𝑘)   𝐶(𝑥,𝑗)   𝑀(𝑥,𝑗,𝑘)

Proof of Theorem climinfmpt

Dummy variables 𝑖 𝑦 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		nfv 1917	. 2 ⊢ Ⅎ𝑖𝜑
2		nfcv 2903	. 2 ⊢ Ⅎ𝑖(𝑘 ∈ 𝑍 ↦ 𝐵)
3		climinfmpt.z	. 2 ⊢ 𝑍 = (ℤ≥‘𝑀)
4		climinfmpt.m	. 2 ⊢ (𝜑 → 𝑀 ∈ ℤ)
5		climinfmpt.p	. . 3 ⊢ Ⅎ𝑘𝜑
6		climinfmpt.b	. . 3 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → 𝐵 ∈ ℝ)
7	5, 6	fmptd2f 43922	. 2 ⊢ (𝜑 → (𝑘 ∈ 𝑍 ↦ 𝐵):𝑍⟶ℝ)
8		nfv 1917	. . . . . . 7 ⊢ Ⅎ𝑘 𝑖 ∈ 𝑍
9	5, 8	nfan 1902	. . . . . 6 ⊢ Ⅎ𝑘(𝜑 ∧ 𝑖 ∈ 𝑍)
10		nfv 1917	. . . . . 6 ⊢ Ⅎ𝑘⦋(𝑖 + 1) / 𝑗⦌𝐶 ≤ ⦋𝑖 / 𝑗⦌𝐶
11	9, 10	nfim 1899	. . . . 5 ⊢ Ⅎ𝑘((𝜑 ∧ 𝑖 ∈ 𝑍) → ⦋(𝑖 + 1) / 𝑗⦌𝐶 ≤ ⦋𝑖 / 𝑗⦌𝐶)
12		eleq1 2821	. . . . . . 7 ⊢ (𝑘 = 𝑖 → (𝑘 ∈ 𝑍 ↔ 𝑖 ∈ 𝑍))
13	12	anbi2d 629	. . . . . 6 ⊢ (𝑘 = 𝑖 → ((𝜑 ∧ 𝑘 ∈ 𝑍) ↔ (𝜑 ∧ 𝑖 ∈ 𝑍)))
14		oveq1 7412	. . . . . . . 8 ⊢ (𝑘 = 𝑖 → (𝑘 + 1) = (𝑖 + 1))
15	14	csbeq1d 3896	. . . . . . 7 ⊢ (𝑘 = 𝑖 → ⦋(𝑘 + 1) / 𝑗⦌𝐶 = ⦋(𝑖 + 1) / 𝑗⦌𝐶)
16		eqidd 2733	. . . . . . . 8 ⊢ (𝑘 = 𝑖 → 𝐵 = 𝐵)
17		csbcow 3907	. . . . . . . . . . 11 ⊢ ⦋𝑘 / 𝑗⦌⦋𝑗 / 𝑘⦌𝐵 = ⦋𝑘 / 𝑘⦌𝐵
18		csbid 3905	. . . . . . . . . . 11 ⊢ ⦋𝑘 / 𝑘⦌𝐵 = 𝐵
19	17, 18	eqtr2i 2761	. . . . . . . . . 10 ⊢ 𝐵 = ⦋𝑘 / 𝑗⦌⦋𝑗 / 𝑘⦌𝐵
20		nfcv 2903	. . . . . . . . . . . . 13 ⊢ Ⅎ𝑗𝐵
21		nfcv 2903	. . . . . . . . . . . . 13 ⊢ Ⅎ𝑘𝐶
22		climinfmpt.c	. . . . . . . . . . . . 13 ⊢ (𝑘 = 𝑗 → 𝐵 = 𝐶)
23	20, 21, 22	cbvcsbw 3902	. . . . . . . . . . . 12 ⊢ ⦋𝑗 / 𝑘⦌𝐵 = ⦋𝑗 / 𝑗⦌𝐶
24		csbid 3905	. . . . . . . . . . . 12 ⊢ ⦋𝑗 / 𝑗⦌𝐶 = 𝐶
25	23, 24	eqtri 2760	. . . . . . . . . . 11 ⊢ ⦋𝑗 / 𝑘⦌𝐵 = 𝐶
26	25	csbeq2i 3900	. . . . . . . . . 10 ⊢ ⦋𝑘 / 𝑗⦌⦋𝑗 / 𝑘⦌𝐵 = ⦋𝑘 / 𝑗⦌𝐶
27	19, 26	eqtri 2760	. . . . . . . . 9 ⊢ 𝐵 = ⦋𝑘 / 𝑗⦌𝐶
28	27	a1i 11	. . . . . . . 8 ⊢ (𝑘 = 𝑖 → 𝐵 = ⦋𝑘 / 𝑗⦌𝐶)
29		csbeq1 3895	. . . . . . . 8 ⊢ (𝑘 = 𝑖 → ⦋𝑘 / 𝑗⦌𝐶 = ⦋𝑖 / 𝑗⦌𝐶)
30	16, 28, 29	3eqtrd 2776	. . . . . . 7 ⊢ (𝑘 = 𝑖 → 𝐵 = ⦋𝑖 / 𝑗⦌𝐶)
31	15, 30	breq12d 5160	. . . . . 6 ⊢ (𝑘 = 𝑖 → (⦋(𝑘 + 1) / 𝑗⦌𝐶 ≤ 𝐵 ↔ ⦋(𝑖 + 1) / 𝑗⦌𝐶 ≤ ⦋𝑖 / 𝑗⦌𝐶))
32	13, 31	imbi12d 344	. . . . 5 ⊢ (𝑘 = 𝑖 → (((𝜑 ∧ 𝑘 ∈ 𝑍) → ⦋(𝑘 + 1) / 𝑗⦌𝐶 ≤ 𝐵) ↔ ((𝜑 ∧ 𝑖 ∈ 𝑍) → ⦋(𝑖 + 1) / 𝑗⦌𝐶 ≤ ⦋𝑖 / 𝑗⦌𝐶)))
33		simpl 483	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → 𝜑)
34		simpr 485	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → 𝑘 ∈ 𝑍)
35		eqidd 2733	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝑘 + 1) = (𝑘 + 1))
36		climinfmpt.j	. . . . . . . . 9 ⊢ Ⅎ𝑗𝜑
37		nfv 1917	. . . . . . . . 9 ⊢ Ⅎ𝑗 𝑘 ∈ 𝑍
38		nfv 1917	. . . . . . . . 9 ⊢ Ⅎ𝑗(𝑘 + 1) = (𝑘 + 1)
39	36, 37, 38	nf3an 1904	. . . . . . . 8 ⊢ Ⅎ𝑗(𝜑 ∧ 𝑘 ∈ 𝑍 ∧ (𝑘 + 1) = (𝑘 + 1))
40		nfcsb1v 3917	. . . . . . . . 9 ⊢ Ⅎ𝑗⦋(𝑘 + 1) / 𝑗⦌𝐶
41		nfcv 2903	. . . . . . . . 9 ⊢ Ⅎ𝑗 ≤
42	40, 41, 20	nfbr 5194	. . . . . . . 8 ⊢ Ⅎ𝑗⦋(𝑘 + 1) / 𝑗⦌𝐶 ≤ 𝐵
43	39, 42	nfim 1899	. . . . . . 7 ⊢ Ⅎ𝑗((𝜑 ∧ 𝑘 ∈ 𝑍 ∧ (𝑘 + 1) = (𝑘 + 1)) → ⦋(𝑘 + 1) / 𝑗⦌𝐶 ≤ 𝐵)
44		ovex 7438	. . . . . . 7 ⊢ (𝑘 + 1) ∈ V
45		eqeq1 2736	. . . . . . . . 9 ⊢ (𝑗 = (𝑘 + 1) → (𝑗 = (𝑘 + 1) ↔ (𝑘 + 1) = (𝑘 + 1)))
46	45	3anbi3d 1442	. . . . . . . 8 ⊢ (𝑗 = (𝑘 + 1) → ((𝜑 ∧ 𝑘 ∈ 𝑍 ∧ 𝑗 = (𝑘 + 1)) ↔ (𝜑 ∧ 𝑘 ∈ 𝑍 ∧ (𝑘 + 1) = (𝑘 + 1))))
47		csbeq1a 3906	. . . . . . . . 9 ⊢ (𝑗 = (𝑘 + 1) → 𝐶 = ⦋(𝑘 + 1) / 𝑗⦌𝐶)
48	47	breq1d 5157	. . . . . . . 8 ⊢ (𝑗 = (𝑘 + 1) → (𝐶 ≤ 𝐵 ↔ ⦋(𝑘 + 1) / 𝑗⦌𝐶 ≤ 𝐵))
49	46, 48	imbi12d 344	. . . . . . 7 ⊢ (𝑗 = (𝑘 + 1) → (((𝜑 ∧ 𝑘 ∈ 𝑍 ∧ 𝑗 = (𝑘 + 1)) → 𝐶 ≤ 𝐵) ↔ ((𝜑 ∧ 𝑘 ∈ 𝑍 ∧ (𝑘 + 1) = (𝑘 + 1)) → ⦋(𝑘 + 1) / 𝑗⦌𝐶 ≤ 𝐵)))
50		climinfmpt.l	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍 ∧ 𝑗 = (𝑘 + 1)) → 𝐶 ≤ 𝐵)
51	43, 44, 49, 50	vtoclf 3547	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍 ∧ (𝑘 + 1) = (𝑘 + 1)) → ⦋(𝑘 + 1) / 𝑗⦌𝐶 ≤ 𝐵)
52	33, 34, 35, 51	syl3anc 1371	. . . . 5 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → ⦋(𝑘 + 1) / 𝑗⦌𝐶 ≤ 𝐵)
53	11, 32, 52	chvarfv 2233	. . . 4 ⊢ ((𝜑 ∧ 𝑖 ∈ 𝑍) → ⦋(𝑖 + 1) / 𝑗⦌𝐶 ≤ ⦋𝑖 / 𝑗⦌𝐶)
54	20, 21, 22	cbvcsbw 3902	. . . . . 6 ⊢ ⦋(𝑖 + 1) / 𝑘⦌𝐵 = ⦋(𝑖 + 1) / 𝑗⦌𝐶
55	54	a1i 11	. . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ 𝑍) → ⦋(𝑖 + 1) / 𝑘⦌𝐵 = ⦋(𝑖 + 1) / 𝑗⦌𝐶)
56		eqidd 2733	. . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ 𝑍) → ⦋𝑖 / 𝑗⦌𝐶 = ⦋𝑖 / 𝑗⦌𝐶)
57	55, 56	breq12d 5160	. . . 4 ⊢ ((𝜑 ∧ 𝑖 ∈ 𝑍) → (⦋(𝑖 + 1) / 𝑘⦌𝐵 ≤ ⦋𝑖 / 𝑗⦌𝐶 ↔ ⦋(𝑖 + 1) / 𝑗⦌𝐶 ≤ ⦋𝑖 / 𝑗⦌𝐶))
58	53, 57	mpbird 256	. . 3 ⊢ ((𝜑 ∧ 𝑖 ∈ 𝑍) → ⦋(𝑖 + 1) / 𝑘⦌𝐵 ≤ ⦋𝑖 / 𝑗⦌𝐶)
59	3	peano2uzs 12882	. . . . . 6 ⊢ (𝑖 ∈ 𝑍 → (𝑖 + 1) ∈ 𝑍)
60	59	adantl 482	. . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ 𝑍) → (𝑖 + 1) ∈ 𝑍)
61		nfv 1917	. . . . . . . . 9 ⊢ Ⅎ𝑘(𝑖 + 1) ∈ 𝑍
62	5, 61	nfan 1902	. . . . . . . 8 ⊢ Ⅎ𝑘(𝜑 ∧ (𝑖 + 1) ∈ 𝑍)
63		nfcv 2903	. . . . . . . . . 10 ⊢ Ⅎ𝑘(𝑖 + 1)
64	63	nfcsb1 3916	. . . . . . . . 9 ⊢ Ⅎ𝑘⦋(𝑖 + 1) / 𝑘⦌𝐵
65	64	nfel1 2919	. . . . . . . 8 ⊢ Ⅎ𝑘⦋(𝑖 + 1) / 𝑘⦌𝐵 ∈ ℝ
66	62, 65	nfim 1899	. . . . . . 7 ⊢ Ⅎ𝑘((𝜑 ∧ (𝑖 + 1) ∈ 𝑍) → ⦋(𝑖 + 1) / 𝑘⦌𝐵 ∈ ℝ)
67		ovex 7438	. . . . . . 7 ⊢ (𝑖 + 1) ∈ V
68		eleq1 2821	. . . . . . . . 9 ⊢ (𝑘 = (𝑖 + 1) → (𝑘 ∈ 𝑍 ↔ (𝑖 + 1) ∈ 𝑍))
69	68	anbi2d 629	. . . . . . . 8 ⊢ (𝑘 = (𝑖 + 1) → ((𝜑 ∧ 𝑘 ∈ 𝑍) ↔ (𝜑 ∧ (𝑖 + 1) ∈ 𝑍)))
70		csbeq1a 3906	. . . . . . . . 9 ⊢ (𝑘 = (𝑖 + 1) → 𝐵 = ⦋(𝑖 + 1) / 𝑘⦌𝐵)
71	70	eleq1d 2818	. . . . . . . 8 ⊢ (𝑘 = (𝑖 + 1) → (𝐵 ∈ ℝ ↔ ⦋(𝑖 + 1) / 𝑘⦌𝐵 ∈ ℝ))
72	69, 71	imbi12d 344	. . . . . . 7 ⊢ (𝑘 = (𝑖 + 1) → (((𝜑 ∧ 𝑘 ∈ 𝑍) → 𝐵 ∈ ℝ) ↔ ((𝜑 ∧ (𝑖 + 1) ∈ 𝑍) → ⦋(𝑖 + 1) / 𝑘⦌𝐵 ∈ ℝ)))
73	66, 67, 72, 6	vtoclf 3547	. . . . . 6 ⊢ ((𝜑 ∧ (𝑖 + 1) ∈ 𝑍) → ⦋(𝑖 + 1) / 𝑘⦌𝐵 ∈ ℝ)
74	59, 73	sylan2 593	. . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ 𝑍) → ⦋(𝑖 + 1) / 𝑘⦌𝐵 ∈ ℝ)
75		eqid 2732	. . . . . 6 ⊢ (𝑘 ∈ 𝑍 ↦ 𝐵) = (𝑘 ∈ 𝑍 ↦ 𝐵)
76	63, 64, 70, 75	fvmptf 7016	. . . . 5 ⊢ (((𝑖 + 1) ∈ 𝑍 ∧ ⦋(𝑖 + 1) / 𝑘⦌𝐵 ∈ ℝ) → ((𝑘 ∈ 𝑍 ↦ 𝐵)‘(𝑖 + 1)) = ⦋(𝑖 + 1) / 𝑘⦌𝐵)
77	60, 74, 76	syl2anc 584	. . . 4 ⊢ ((𝜑 ∧ 𝑖 ∈ 𝑍) → ((𝑘 ∈ 𝑍 ↦ 𝐵)‘(𝑖 + 1)) = ⦋(𝑖 + 1) / 𝑘⦌𝐵)
78		simpr 485	. . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ 𝑍) → 𝑖 ∈ 𝑍)
79		nfv 1917	. . . . . . . 8 ⊢ Ⅎ𝑗 𝑖 ∈ 𝑍
80	36, 79	nfan 1902	. . . . . . 7 ⊢ Ⅎ𝑗(𝜑 ∧ 𝑖 ∈ 𝑍)
81		nfcsb1v 3917	. . . . . . . 8 ⊢ Ⅎ𝑗⦋𝑖 / 𝑗⦌𝐶
82		nfcv 2903	. . . . . . . 8 ⊢ Ⅎ𝑗ℝ
83	81, 82	nfel 2917	. . . . . . 7 ⊢ Ⅎ𝑗⦋𝑖 / 𝑗⦌𝐶 ∈ ℝ
84	80, 83	nfim 1899	. . . . . 6 ⊢ Ⅎ𝑗((𝜑 ∧ 𝑖 ∈ 𝑍) → ⦋𝑖 / 𝑗⦌𝐶 ∈ ℝ)
85		eleq1 2821	. . . . . . . 8 ⊢ (𝑗 = 𝑖 → (𝑗 ∈ 𝑍 ↔ 𝑖 ∈ 𝑍))
86	85	anbi2d 629	. . . . . . 7 ⊢ (𝑗 = 𝑖 → ((𝜑 ∧ 𝑗 ∈ 𝑍) ↔ (𝜑 ∧ 𝑖 ∈ 𝑍)))
87		csbeq1a 3906	. . . . . . . 8 ⊢ (𝑗 = 𝑖 → 𝐶 = ⦋𝑖 / 𝑗⦌𝐶)
88	87	eleq1d 2818	. . . . . . 7 ⊢ (𝑗 = 𝑖 → (𝐶 ∈ ℝ ↔ ⦋𝑖 / 𝑗⦌𝐶 ∈ ℝ))
89	86, 88	imbi12d 344	. . . . . 6 ⊢ (𝑗 = 𝑖 → (((𝜑 ∧ 𝑗 ∈ 𝑍) → 𝐶 ∈ ℝ) ↔ ((𝜑 ∧ 𝑖 ∈ 𝑍) → ⦋𝑖 / 𝑗⦌𝐶 ∈ ℝ)))
90		nfv 1917	. . . . . . . . 9 ⊢ Ⅎ𝑘 𝑗 ∈ 𝑍
91	5, 90	nfan 1902	. . . . . . . 8 ⊢ Ⅎ𝑘(𝜑 ∧ 𝑗 ∈ 𝑍)
92		nfv 1917	. . . . . . . 8 ⊢ Ⅎ𝑘 𝐶 ∈ ℝ
93	91, 92	nfim 1899	. . . . . . 7 ⊢ Ⅎ𝑘((𝜑 ∧ 𝑗 ∈ 𝑍) → 𝐶 ∈ ℝ)
94		eleq1 2821	. . . . . . . . 9 ⊢ (𝑘 = 𝑗 → (𝑘 ∈ 𝑍 ↔ 𝑗 ∈ 𝑍))
95	94	anbi2d 629	. . . . . . . 8 ⊢ (𝑘 = 𝑗 → ((𝜑 ∧ 𝑘 ∈ 𝑍) ↔ (𝜑 ∧ 𝑗 ∈ 𝑍)))
96	22	eleq1d 2818	. . . . . . . 8 ⊢ (𝑘 = 𝑗 → (𝐵 ∈ ℝ ↔ 𝐶 ∈ ℝ))
97	95, 96	imbi12d 344	. . . . . . 7 ⊢ (𝑘 = 𝑗 → (((𝜑 ∧ 𝑘 ∈ 𝑍) → 𝐵 ∈ ℝ) ↔ ((𝜑 ∧ 𝑗 ∈ 𝑍) → 𝐶 ∈ ℝ)))
98	93, 97, 6	chvarfv 2233	. . . . . 6 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝑍) → 𝐶 ∈ ℝ)
99	84, 89, 98	chvarfv 2233	. . . . 5 ⊢ ((𝜑 ∧ 𝑖 ∈ 𝑍) → ⦋𝑖 / 𝑗⦌𝐶 ∈ ℝ)
100		nfcv 2903	. . . . . 6 ⊢ Ⅎ𝑘𝑖
101		nfcv 2903	. . . . . 6 ⊢ Ⅎ𝑘⦋𝑖 / 𝑗⦌𝐶
102	100, 101, 30, 75	fvmptf 7016	. . . . 5 ⊢ ((𝑖 ∈ 𝑍 ∧ ⦋𝑖 / 𝑗⦌𝐶 ∈ ℝ) → ((𝑘 ∈ 𝑍 ↦ 𝐵)‘𝑖) = ⦋𝑖 / 𝑗⦌𝐶)
103	78, 99, 102	syl2anc 584	. . . 4 ⊢ ((𝜑 ∧ 𝑖 ∈ 𝑍) → ((𝑘 ∈ 𝑍 ↦ 𝐵)‘𝑖) = ⦋𝑖 / 𝑗⦌𝐶)
104	77, 103	breq12d 5160	. . 3 ⊢ ((𝜑 ∧ 𝑖 ∈ 𝑍) → (((𝑘 ∈ 𝑍 ↦ 𝐵)‘(𝑖 + 1)) ≤ ((𝑘 ∈ 𝑍 ↦ 𝐵)‘𝑖) ↔ ⦋(𝑖 + 1) / 𝑘⦌𝐵 ≤ ⦋𝑖 / 𝑗⦌𝐶))
105	58, 104	mpbird 256	. 2 ⊢ ((𝜑 ∧ 𝑖 ∈ 𝑍) → ((𝑘 ∈ 𝑍 ↦ 𝐵)‘(𝑖 + 1)) ≤ ((𝑘 ∈ 𝑍 ↦ 𝐵)‘𝑖))
106		climinfmpt.e	. . . 4 ⊢ (𝜑 → ∃𝑥 ∈ ℝ ∀𝑘 ∈ 𝑍 𝑥 ≤ 𝐵)
107		breq1 5150	. . . . . 6 ⊢ (𝑥 = 𝑦 → (𝑥 ≤ 𝐵 ↔ 𝑦 ≤ 𝐵))
108	107	ralbidv 3177	. . . . 5 ⊢ (𝑥 = 𝑦 → (∀𝑘 ∈ 𝑍 𝑥 ≤ 𝐵 ↔ ∀𝑘 ∈ 𝑍 𝑦 ≤ 𝐵))
109	108	cbvrexvw 3235	. . . 4 ⊢ (∃𝑥 ∈ ℝ ∀𝑘 ∈ 𝑍 𝑥 ≤ 𝐵 ↔ ∃𝑦 ∈ ℝ ∀𝑘 ∈ 𝑍 𝑦 ≤ 𝐵)
110	106, 109	sylib 217	. . 3 ⊢ (𝜑 → ∃𝑦 ∈ ℝ ∀𝑘 ∈ 𝑍 𝑦 ≤ 𝐵)
111		nfcv 2903	. . . . . . . 8 ⊢ Ⅎ𝑘𝑦
112		nfcv 2903	. . . . . . . 8 ⊢ Ⅎ𝑘 ≤
113		nfmpt1 5255	. . . . . . . . 9 ⊢ Ⅎ𝑘(𝑘 ∈ 𝑍 ↦ 𝐵)
114	113, 100	nffv 6898	. . . . . . . 8 ⊢ Ⅎ𝑘((𝑘 ∈ 𝑍 ↦ 𝐵)‘𝑖)
115	111, 112, 114	nfbr 5194	. . . . . . 7 ⊢ Ⅎ𝑘 𝑦 ≤ ((𝑘 ∈ 𝑍 ↦ 𝐵)‘𝑖)
116		nfv 1917	. . . . . . 7 ⊢ Ⅎ𝑖 𝑦 ≤ ((𝑘 ∈ 𝑍 ↦ 𝐵)‘𝑘)
117		fveq2 6888	. . . . . . . 8 ⊢ (𝑖 = 𝑘 → ((𝑘 ∈ 𝑍 ↦ 𝐵)‘𝑖) = ((𝑘 ∈ 𝑍 ↦ 𝐵)‘𝑘))
118	117	breq2d 5159	. . . . . . 7 ⊢ (𝑖 = 𝑘 → (𝑦 ≤ ((𝑘 ∈ 𝑍 ↦ 𝐵)‘𝑖) ↔ 𝑦 ≤ ((𝑘 ∈ 𝑍 ↦ 𝐵)‘𝑘)))
119	115, 116, 118	cbvralw 3303	. . . . . 6 ⊢ (∀𝑖 ∈ 𝑍 𝑦 ≤ ((𝑘 ∈ 𝑍 ↦ 𝐵)‘𝑖) ↔ ∀𝑘 ∈ 𝑍 𝑦 ≤ ((𝑘 ∈ 𝑍 ↦ 𝐵)‘𝑘))
120	119	a1i 11	. . . . 5 ⊢ (𝜑 → (∀𝑖 ∈ 𝑍 𝑦 ≤ ((𝑘 ∈ 𝑍 ↦ 𝐵)‘𝑖) ↔ ∀𝑘 ∈ 𝑍 𝑦 ≤ ((𝑘 ∈ 𝑍 ↦ 𝐵)‘𝑘)))
121	75	a1i 11	. . . . . . . 8 ⊢ (𝜑 → (𝑘 ∈ 𝑍 ↦ 𝐵) = (𝑘 ∈ 𝑍 ↦ 𝐵))
122	121, 6	fvmpt2d 7008	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → ((𝑘 ∈ 𝑍 ↦ 𝐵)‘𝑘) = 𝐵)
123	122	breq2d 5159	. . . . . 6 ⊢ ((𝜑 ∧ 𝑘 ∈ 𝑍) → (𝑦 ≤ ((𝑘 ∈ 𝑍 ↦ 𝐵)‘𝑘) ↔ 𝑦 ≤ 𝐵))
124	5, 123	ralbida 3267	. . . . 5 ⊢ (𝜑 → (∀𝑘 ∈ 𝑍 𝑦 ≤ ((𝑘 ∈ 𝑍 ↦ 𝐵)‘𝑘) ↔ ∀𝑘 ∈ 𝑍 𝑦 ≤ 𝐵))
125	120, 124	bitrd 278	. . . 4 ⊢ (𝜑 → (∀𝑖 ∈ 𝑍 𝑦 ≤ ((𝑘 ∈ 𝑍 ↦ 𝐵)‘𝑖) ↔ ∀𝑘 ∈ 𝑍 𝑦 ≤ 𝐵))
126	125	rexbidv 3178	. . 3 ⊢ (𝜑 → (∃𝑦 ∈ ℝ ∀𝑖 ∈ 𝑍 𝑦 ≤ ((𝑘 ∈ 𝑍 ↦ 𝐵)‘𝑖) ↔ ∃𝑦 ∈ ℝ ∀𝑘 ∈ 𝑍 𝑦 ≤ 𝐵))
127	110, 126	mpbird 256	. 2 ⊢ (𝜑 → ∃𝑦 ∈ ℝ ∀𝑖 ∈ 𝑍 𝑦 ≤ ((𝑘 ∈ 𝑍 ↦ 𝐵)‘𝑖))
128	1, 2, 3, 4, 7, 105, 127	climinf2 44409	1 ⊢ (𝜑 → (𝑘 ∈ 𝑍 ↦ 𝐵) ⇝ inf(ran (𝑘 ∈ 𝑍 ↦ 𝐵), ℝ*, < ))

Syntax hints:   → wi 4   ↔ wb 205   ∧ wa 396   ∧ w3a 1087   = wceq 1541  Ⅎwnf 1785   ∈ wcel 2106  ∀wral 3061  ∃wrex 3070  ⦋csb 3892   class class class wbr 5147   ↦ cmpt 5230  ran crn 5676  ‘cfv 6540  (class class class)co 7405  infcinf 9432  ℝcr 11105  1c1 11107   + caddc 11109  ℝ^*cxr 11243   < clt 11244   ≤ cle 11245  ℤcz 12554  ℤ_≥cuz 12818   ⇝ cli 15424

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 1913  ax-6 1971  ax-7 2011  ax-8 2108  ax-9 2116  ax-10 2137  ax-11 2154  ax-12 2171  ax-ext 2703  ax-rep 5284  ax-sep 5298  ax-nul 5305  ax-pow 5362  ax-pr 5426  ax-un 7721  ax-cnex 11162  ax-resscn 11163  ax-1cn 11164  ax-icn 11165  ax-addcl 11166  ax-addrcl 11167  ax-mulcl 11168  ax-mulrcl 11169  ax-mulcom 11170  ax-addass 11171  ax-mulass 11172  ax-distr 11173  ax-i2m1 11174  ax-1ne0 11175  ax-1rid 11176  ax-rnegex 11177  ax-rrecex 11178  ax-cnre 11179  ax-pre-lttri 11180  ax-pre-lttrn 11181  ax-pre-ltadd 11182  ax-pre-mulgt0 11183  ax-pre-sup 11184

This theorem depends on definitions:  df-bi 206  df-an 397  df-or 846  df-3or 1088  df-3an 1089  df-tru 1544  df-fal 1554  df-ex 1782  df-nf 1786  df-sb 2068  df-mo 2534  df-eu 2563  df-clab 2710  df-cleq 2724  df-clel 2810  df-nfc 2885  df-ne 2941  df-nel 3047  df-ral 3062  df-rex 3071  df-rmo 3376  df-reu 3377  df-rab 3433  df-v 3476  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 6297  df-ord 6364  df-on 6365  df-lim 6366  df-suc 6367  df-iota 6492  df-fun 6542  df-fn 6543  df-f 6544  df-f1 6545  df-fo 6546  df-f1o 6547  df-fv 6548  df-riota 7361  df-ov 7408  df-oprab 7409  df-mpo 7410  df-om 7852  df-1st 7971  df-2nd 7972  df-frecs 8262  df-wrecs 8293  df-recs 8367  df-rdg 8406  df-er 8699  df-en 8936  df-dom 8937  df-sdom 8938  df-sup 9433  df-inf 9434  df-pnf 11246  df-mnf 11247  df-xr 11248  df-ltxr 11249  df-le 11250  df-sub 11442  df-neg 11443  df-div 11868  df-nn 12209  df-2 12271  df-3 12272  df-n0 12469  df-z 12555  df-uz 12819  df-rp 12971  df-fz 13481  df-seq 13963  df-exp 14024  df-cj 15042  df-re 15043  df-im 15044  df-sqrt 15178  df-abs 15179  df-clim 15428

This theorem is referenced by: (None)