Theorem hoicvr 41693

Description: 𝐼 is a countable set of half-open intervals that covers the whole multidimensional reals. See Definition 1135 (b) of [Fremlin1] p. 29. (Contributed by Glauco Siliprandi, 11-Oct-2020.)

Hypotheses

Ref	Expression
hoicvr.2	⊢ 𝐼 = (𝑗 ∈ ℕ ↦ (𝑥 ∈ 𝑋 ↦ ⟨-𝑗, 𝑗⟩))
hoicvr.3	⊢ (𝜑 → 𝑋 ∈ Fin)

Assertion

Ref	Expression
hoicvr	⊢ (𝜑 → (ℝ ↑𝑚 𝑋) ⊆ ∪ 𝑗 ∈ ℕ X𝑖 ∈ 𝑋 (([,) ∘ (𝐼‘𝑗))‘𝑖))

Distinct variable groups:   𝑖,𝑋,𝑗,𝑥   𝜑,𝑖,𝑗,𝑥

Allowed substitution hints:   𝐼(𝑥,𝑖,𝑗)

Proof of Theorem hoicvr

Dummy variables 𝑓 𝑦 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		reex 10363	. . . . . . 7 ⊢ ℝ ∈ V
2		mapdm0 8155	. . . . . . 7 ⊢ (ℝ ∈ V → (ℝ ↑𝑚 ∅) = {∅})
3	1, 2	ax-mp 5	. . . . . 6 ⊢ (ℝ ↑𝑚 ∅) = {∅}
4	3	a1i 11	. . . . 5 ⊢ (𝑋 = ∅ → (ℝ ↑𝑚 ∅) = {∅})
5		oveq2 6930	. . . . 5 ⊢ (𝑋 = ∅ → (ℝ ↑𝑚 𝑋) = (ℝ ↑𝑚 ∅))
6		ixpeq1 8205	. . . . . . 7 ⊢ (𝑋 = ∅ → X𝑖 ∈ 𝑋 (([,) ∘ (𝐼‘𝑗))‘𝑖) = X𝑖 ∈ ∅ (([,) ∘ (𝐼‘𝑗))‘𝑖))
7	6	iuneq2d 4780	. . . . . 6 ⊢ (𝑋 = ∅ → ∪ 𝑗 ∈ ℕ X𝑖 ∈ 𝑋 (([,) ∘ (𝐼‘𝑗))‘𝑖) = ∪ 𝑗 ∈ ℕ X𝑖 ∈ ∅ (([,) ∘ (𝐼‘𝑗))‘𝑖))
8		ixp0x 8222	. . . . . . . . . 10 ⊢ X𝑖 ∈ ∅ (([,) ∘ (𝐼‘𝑗))‘𝑖) = {∅}
9	8	a1i 11	. . . . . . . . 9 ⊢ (𝑗 ∈ ℕ → X𝑖 ∈ ∅ (([,) ∘ (𝐼‘𝑗))‘𝑖) = {∅})
10	9	iuneq2i 4772	. . . . . . . 8 ⊢ ∪ 𝑗 ∈ ℕ X𝑖 ∈ ∅ (([,) ∘ (𝐼‘𝑗))‘𝑖) = ∪ 𝑗 ∈ ℕ {∅}
11		1nn 11387	. . . . . . . . . 10 ⊢ 1 ∈ ℕ
12	11	ne0ii 4152	. . . . . . . . 9 ⊢ ℕ ≠ ∅
13		iunconst 4762	. . . . . . . . 9 ⊢ (ℕ ≠ ∅ → ∪ 𝑗 ∈ ℕ {∅} = {∅})
14	12, 13	ax-mp 5	. . . . . . . 8 ⊢ ∪ 𝑗 ∈ ℕ {∅} = {∅}
15	10, 14	eqtri 2802	. . . . . . 7 ⊢ ∪ 𝑗 ∈ ℕ X𝑖 ∈ ∅ (([,) ∘ (𝐼‘𝑗))‘𝑖) = {∅}
16	15	a1i 11	. . . . . 6 ⊢ (𝑋 = ∅ → ∪ 𝑗 ∈ ℕ X𝑖 ∈ ∅ (([,) ∘ (𝐼‘𝑗))‘𝑖) = {∅})
17	7, 16	eqtrd 2814	. . . . 5 ⊢ (𝑋 = ∅ → ∪ 𝑗 ∈ ℕ X𝑖 ∈ 𝑋 (([,) ∘ (𝐼‘𝑗))‘𝑖) = {∅})
18	4, 5, 17	3eqtr4d 2824	. . . 4 ⊢ (𝑋 = ∅ → (ℝ ↑𝑚 𝑋) = ∪ 𝑗 ∈ ℕ X𝑖 ∈ 𝑋 (([,) ∘ (𝐼‘𝑗))‘𝑖))
19		eqimss 3876	. . . 4 ⊢ ((ℝ ↑𝑚 𝑋) = ∪ 𝑗 ∈ ℕ X𝑖 ∈ 𝑋 (([,) ∘ (𝐼‘𝑗))‘𝑖) → (ℝ ↑𝑚 𝑋) ⊆ ∪ 𝑗 ∈ ℕ X𝑖 ∈ 𝑋 (([,) ∘ (𝐼‘𝑗))‘𝑖))
20	18, 19	syl 17	. . 3 ⊢ (𝑋 = ∅ → (ℝ ↑𝑚 𝑋) ⊆ ∪ 𝑗 ∈ ℕ X𝑖 ∈ 𝑋 (([,) ∘ (𝐼‘𝑗))‘𝑖))
21	20	adantl 475	. 2 ⊢ ((𝜑 ∧ 𝑋 = ∅) → (ℝ ↑𝑚 𝑋) ⊆ ∪ 𝑗 ∈ ℕ X𝑖 ∈ 𝑋 (([,) ∘ (𝐼‘𝑗))‘𝑖))
22		simpll 757	. . . . . 6 ⊢ (((𝜑 ∧ ¬ 𝑋 = ∅) ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) → 𝜑)
23		simpr 479	. . . . . 6 ⊢ (((𝜑 ∧ ¬ 𝑋 = ∅) ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) → 𝑓 ∈ (ℝ ↑𝑚 𝑋))
24		simplr 759	. . . . . 6 ⊢ (((𝜑 ∧ ¬ 𝑋 = ∅) ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) → ¬ 𝑋 = ∅)
25		rncoss 5632	. . . . . . . . . . 11 ⊢ ran (abs ∘ 𝑓) ⊆ ran abs
26		absf 14484	. . . . . . . . . . . 12 ⊢ abs:ℂ⟶ℝ
27		frn 6297	. . . . . . . . . . . 12 ⊢ (abs:ℂ⟶ℝ → ran abs ⊆ ℝ)
28	26, 27	ax-mp 5	. . . . . . . . . . 11 ⊢ ran abs ⊆ ℝ
29	25, 28	sstri 3830	. . . . . . . . . 10 ⊢ ran (abs ∘ 𝑓) ⊆ ℝ
30	29	a1i 11	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ ¬ 𝑋 = ∅) → ran (abs ∘ 𝑓) ⊆ ℝ)
31		ltso 10457	. . . . . . . . . . 11 ⊢ < Or ℝ
32	31	a1i 11	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ ¬ 𝑋 = ∅) → < Or ℝ)
33	26	a1i 11	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) → abs:ℂ⟶ℝ)
34		elmapi 8162	. . . . . . . . . . . . . . 15 ⊢ (𝑓 ∈ (ℝ ↑𝑚 𝑋) → 𝑓:𝑋⟶ℝ)
35	34	adantl 475	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) → 𝑓:𝑋⟶ℝ)
36		ax-resscn 10329	. . . . . . . . . . . . . . 15 ⊢ ℝ ⊆ ℂ
37	36	a1i 11	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) → ℝ ⊆ ℂ)
38	35, 37	fssd 6305	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) → 𝑓:𝑋⟶ℂ)
39		fco 6308	. . . . . . . . . . . . 13 ⊢ ((abs:ℂ⟶ℝ ∧ 𝑓:𝑋⟶ℂ) → (abs ∘ 𝑓):𝑋⟶ℝ)
40	33, 38, 39	syl2anc 579	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) → (abs ∘ 𝑓):𝑋⟶ℝ)
41		hoicvr.3	. . . . . . . . . . . . 13 ⊢ (𝜑 → 𝑋 ∈ Fin)
42	41	adantr 474	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) → 𝑋 ∈ Fin)
43		rnffi 40284	. . . . . . . . . . . 12 ⊢ (((abs ∘ 𝑓):𝑋⟶ℝ ∧ 𝑋 ∈ Fin) → ran (abs ∘ 𝑓) ∈ Fin)
44	40, 42, 43	syl2anc 579	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) → ran (abs ∘ 𝑓) ∈ Fin)
45	44	adantr 474	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ ¬ 𝑋 = ∅) → ran (abs ∘ 𝑓) ∈ Fin)
46	34	frnd 6298	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑓 ∈ (ℝ ↑𝑚 𝑋) → ran 𝑓 ⊆ ℝ)
47	26	fdmi 6301	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ dom abs = ℂ
48	47	eqcomi 2787	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ℂ = dom abs
49	36, 48	sseqtri 3856	. . . . . . . . . . . . . . . . . . . 20 ⊢ ℝ ⊆ dom abs
50	49	a1i 11	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑓 ∈ (ℝ ↑𝑚 𝑋) → ℝ ⊆ dom abs)
51	46, 50	sstrd 3831	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑓 ∈ (ℝ ↑𝑚 𝑋) → ran 𝑓 ⊆ dom abs)
52		dmcosseq 5633	. . . . . . . . . . . . . . . . . 18 ⊢ (ran 𝑓 ⊆ dom abs → dom (abs ∘ 𝑓) = dom 𝑓)
53	51, 52	syl 17	. . . . . . . . . . . . . . . . 17 ⊢ (𝑓 ∈ (ℝ ↑𝑚 𝑋) → dom (abs ∘ 𝑓) = dom 𝑓)
54	34	fdmd 6300	. . . . . . . . . . . . . . . . 17 ⊢ (𝑓 ∈ (ℝ ↑𝑚 𝑋) → dom 𝑓 = 𝑋)
55	53, 54	eqtrd 2814	. . . . . . . . . . . . . . . 16 ⊢ (𝑓 ∈ (ℝ ↑𝑚 𝑋) → dom (abs ∘ 𝑓) = 𝑋)
56	55	adantr 474	. . . . . . . . . . . . . . 15 ⊢ ((𝑓 ∈ (ℝ ↑𝑚 𝑋) ∧ ¬ 𝑋 = ∅) → dom (abs ∘ 𝑓) = 𝑋)
57		neqne 2977	. . . . . . . . . . . . . . . 16 ⊢ (¬ 𝑋 = ∅ → 𝑋 ≠ ∅)
58	57	adantl 475	. . . . . . . . . . . . . . 15 ⊢ ((𝑓 ∈ (ℝ ↑𝑚 𝑋) ∧ ¬ 𝑋 = ∅) → 𝑋 ≠ ∅)
59	56, 58	eqnetrd 3036	. . . . . . . . . . . . . 14 ⊢ ((𝑓 ∈ (ℝ ↑𝑚 𝑋) ∧ ¬ 𝑋 = ∅) → dom (abs ∘ 𝑓) ≠ ∅)
60	59	neneqd 2974	. . . . . . . . . . . . 13 ⊢ ((𝑓 ∈ (ℝ ↑𝑚 𝑋) ∧ ¬ 𝑋 = ∅) → ¬ dom (abs ∘ 𝑓) = ∅)
61		dm0rn0 5587	. . . . . . . . . . . . 13 ⊢ (dom (abs ∘ 𝑓) = ∅ ↔ ran (abs ∘ 𝑓) = ∅)
62	60, 61	sylnib 320	. . . . . . . . . . . 12 ⊢ ((𝑓 ∈ (ℝ ↑𝑚 𝑋) ∧ ¬ 𝑋 = ∅) → ¬ ran (abs ∘ 𝑓) = ∅)
63	62	neqned 2976	. . . . . . . . . . 11 ⊢ ((𝑓 ∈ (ℝ ↑𝑚 𝑋) ∧ ¬ 𝑋 = ∅) → ran (abs ∘ 𝑓) ≠ ∅)
64	63	adantll 704	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ ¬ 𝑋 = ∅) → ran (abs ∘ 𝑓) ≠ ∅)
65		fisupcl 8663	. . . . . . . . . 10 ⊢ (( < Or ℝ ∧ (ran (abs ∘ 𝑓) ∈ Fin ∧ ran (abs ∘ 𝑓) ≠ ∅ ∧ ran (abs ∘ 𝑓) ⊆ ℝ)) → sup(ran (abs ∘ 𝑓), ℝ, < ) ∈ ran (abs ∘ 𝑓))
66	32, 45, 64, 30, 65	syl13anc 1440	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ ¬ 𝑋 = ∅) → sup(ran (abs ∘ 𝑓), ℝ, < ) ∈ ran (abs ∘ 𝑓))
67	30, 66	sseldd 3822	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ ¬ 𝑋 = ∅) → sup(ran (abs ∘ 𝑓), ℝ, < ) ∈ ℝ)
68		arch 11639	. . . . . . . 8 ⊢ (sup(ran (abs ∘ 𝑓), ℝ, < ) ∈ ℝ → ∃𝑗 ∈ ℕ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗)
69	67, 68	syl 17	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ ¬ 𝑋 = ∅) → ∃𝑗 ∈ ℕ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗)
70	35	ffnd 6292	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) → 𝑓 Fn 𝑋)
71	70	ad2antrr 716	. . . . . . . . . . . 12 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ ¬ 𝑋 = ∅) ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) → 𝑓 Fn 𝑋)
72	71	adantlr 705	. . . . . . . . . . 11 ⊢ (((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ ¬ 𝑋 = ∅) ∧ 𝑗 ∈ ℕ) ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) → 𝑓 Fn 𝑋)
73		simplll 765	. . . . . . . . . . . . . . . 16 ⊢ (((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ) ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → (𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)))
74		id 22	. . . . . . . . . . . . . . . . 17 ⊢ (𝑗 ∈ ℕ → 𝑗 ∈ ℕ)
75	74	ad3antlr 721	. . . . . . . . . . . . . . . 16 ⊢ (((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ) ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → 𝑗 ∈ ℕ)
76		simplr 759	. . . . . . . . . . . . . . . 16 ⊢ (((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ) ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗)
77		simpr 479	. . . . . . . . . . . . . . . 16 ⊢ (((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ) ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → 𝑖 ∈ 𝑋)
78		simp2 1128	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) → 𝑗 ∈ ℕ)
79		zssre 11735	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ℤ ⊆ ℝ
80		ressxr 10420	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ℝ ⊆ ℝ*
81	79, 80	sstri 3830	. . . . . . . . . . . . . . . . . . . 20 ⊢ ℤ ⊆ ℝ*
82		nnnegz 11731	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑗 ∈ ℕ → -𝑗 ∈ ℤ)
83	81, 82	sseldi 3819	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑗 ∈ ℕ → -𝑗 ∈ ℝ*)
84	83	adantr 474	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑗 ∈ ℕ ∧ 𝑖 ∈ 𝑋) → -𝑗 ∈ ℝ*)
85	78, 84	sylan 575	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → -𝑗 ∈ ℝ*)
86	74	nnxrd 40138	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑗 ∈ ℕ → 𝑗 ∈ ℝ*)
87	86	adantr 474	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑗 ∈ ℕ ∧ 𝑖 ∈ 𝑋) → 𝑗 ∈ ℝ*)
88	78, 87	sylan 575	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → 𝑗 ∈ ℝ*)
89	34	3ad2ant1 1124	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝑓 ∈ (ℝ ↑𝑚 𝑋) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) → 𝑓:𝑋⟶ℝ)
90	80	a1i 11	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝑓 ∈ (ℝ ↑𝑚 𝑋) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) → ℝ ⊆ ℝ*)
91	89, 90	fssd 6305	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑓 ∈ (ℝ ↑𝑚 𝑋) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) → 𝑓:𝑋⟶ℝ*)
92	91	3adant1l 1178	. . . . . . . . . . . . . . . . . 18 ⊢ (((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) → 𝑓:𝑋⟶ℝ*)
93	92	ffvelrnda 6623	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → (𝑓‘𝑖) ∈ ℝ*)
94		nnre 11382	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑗 ∈ ℕ → 𝑗 ∈ ℝ)
95	94	adantr 474	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝑗 ∈ ℕ ∧ 𝑖 ∈ 𝑋) → 𝑗 ∈ ℝ)
96	95	3ad2antl2 1194	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → 𝑗 ∈ ℝ)
97	96	renegcld 10802	. . . . . . . . . . . . . . . . . 18 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → -𝑗 ∈ ℝ)
98	35	ffvelrnda 6623	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑖 ∈ 𝑋) → (𝑓‘𝑖) ∈ ℝ)
99	98	3ad2antl1 1193	. . . . . . . . . . . . . . . . . 18 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → (𝑓‘𝑖) ∈ ℝ)
100	99	renegcld 10802	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → -(𝑓‘𝑖) ∈ ℝ)
101		simpll 757	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑖 ∈ 𝑋) → 𝜑)
102		simplr 759	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑖 ∈ 𝑋) → 𝑓 ∈ (ℝ ↑𝑚 𝑋))
103		n0i 4148	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (𝑖 ∈ 𝑋 → ¬ 𝑋 = ∅)
104	103	adantl 475	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑖 ∈ 𝑋) → ¬ 𝑋 = ∅)
105	101, 102, 104, 67	syl21anc 828	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑖 ∈ 𝑋) → sup(ran (abs ∘ 𝑓), ℝ, < ) ∈ ℝ)
106	105	3ad2antl1 1193	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → sup(ran (abs ∘ 𝑓), ℝ, < ) ∈ ℝ)
107	34	ffvelrnda 6623	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((𝑓 ∈ (ℝ ↑𝑚 𝑋) ∧ 𝑖 ∈ 𝑋) → (𝑓‘𝑖) ∈ ℝ)
108	36, 107	sseldi 3819	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ ((𝑓 ∈ (ℝ ↑𝑚 𝑋) ∧ 𝑖 ∈ 𝑋) → (𝑓‘𝑖) ∈ ℂ)
109	108	abscld 14583	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ((𝑓 ∈ (ℝ ↑𝑚 𝑋) ∧ 𝑖 ∈ 𝑋) → (abs‘(𝑓‘𝑖)) ∈ ℝ)
110	109	adantll 704	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑖 ∈ 𝑋) → (abs‘(𝑓‘𝑖)) ∈ ℝ)
111	110	3ad2antl1 1193	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → (abs‘(𝑓‘𝑖)) ∈ ℝ)
112	107	renegcld 10802	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((𝑓 ∈ (ℝ ↑𝑚 𝑋) ∧ 𝑖 ∈ 𝑋) → -(𝑓‘𝑖) ∈ ℝ)
113	112	leabsd 14561	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ ((𝑓 ∈ (ℝ ↑𝑚 𝑋) ∧ 𝑖 ∈ 𝑋) → -(𝑓‘𝑖) ≤ (abs‘-(𝑓‘𝑖)))
114	108	absnegd 14596	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ ((𝑓 ∈ (ℝ ↑𝑚 𝑋) ∧ 𝑖 ∈ 𝑋) → (abs‘-(𝑓‘𝑖)) = (abs‘(𝑓‘𝑖)))
115	113, 114	breqtrd 4912	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ((𝑓 ∈ (ℝ ↑𝑚 𝑋) ∧ 𝑖 ∈ 𝑋) → -(𝑓‘𝑖) ≤ (abs‘(𝑓‘𝑖)))
116	115	adantll 704	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑖 ∈ 𝑋) → -(𝑓‘𝑖) ≤ (abs‘(𝑓‘𝑖)))
117	116	3ad2antl1 1193	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → -(𝑓‘𝑖) ≤ (abs‘(𝑓‘𝑖)))
118	29	a1i 11	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → ran (abs ∘ 𝑓) ⊆ ℝ)
119	104, 64	syldan 585	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑖 ∈ 𝑋) → ran (abs ∘ 𝑓) ≠ ∅)
120	119	3ad2antl1 1193	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → ran (abs ∘ 𝑓) ≠ ∅)
121		fimaxre2 11323	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((ran (abs ∘ 𝑓) ⊆ ℝ ∧ ran (abs ∘ 𝑓) ∈ Fin) → ∃𝑦 ∈ ℝ ∀𝑧 ∈ ran (abs ∘ 𝑓)𝑧 ≤ 𝑦)
122	29, 44, 121	sylancr 581	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ ((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) → ∃𝑦 ∈ ℝ ∀𝑧 ∈ ran (abs ∘ 𝑓)𝑧 ≤ 𝑦)
123	122	adantr 474	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑖 ∈ 𝑋) → ∃𝑦 ∈ ℝ ∀𝑧 ∈ ran (abs ∘ 𝑓)𝑧 ≤ 𝑦)
124	123	3ad2antl1 1193	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → ∃𝑦 ∈ ℝ ∀𝑧 ∈ ran (abs ∘ 𝑓)𝑧 ≤ 𝑦)
125		elmapfun 8164	. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ⊢ (𝑓 ∈ (ℝ ↑𝑚 𝑋) → Fun 𝑓)
126	125	adantr 474	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ ((𝑓 ∈ (ℝ ↑𝑚 𝑋) ∧ 𝑖 ∈ 𝑋) → Fun 𝑓)
127		simpr 479	. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ⊢ ((𝑓 ∈ (ℝ ↑𝑚 𝑋) ∧ 𝑖 ∈ 𝑋) → 𝑖 ∈ 𝑋)
128	54	eqcomd 2784	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ⊢ (𝑓 ∈ (ℝ ↑𝑚 𝑋) → 𝑋 = dom 𝑓)
129	128	adantr 474	. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ⊢ ((𝑓 ∈ (ℝ ↑𝑚 𝑋) ∧ 𝑖 ∈ 𝑋) → 𝑋 = dom 𝑓)
130	127, 129	eleqtrd 2861	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ ((𝑓 ∈ (ℝ ↑𝑚 𝑋) ∧ 𝑖 ∈ 𝑋) → 𝑖 ∈ dom 𝑓)
131		fvco 6534	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ ((Fun 𝑓 ∧ 𝑖 ∈ dom 𝑓) → ((abs ∘ 𝑓)‘𝑖) = (abs‘(𝑓‘𝑖)))
132	126, 130, 131	syl2anc 579	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ ((𝑓 ∈ (ℝ ↑𝑚 𝑋) ∧ 𝑖 ∈ 𝑋) → ((abs ∘ 𝑓)‘𝑖) = (abs‘(𝑓‘𝑖)))
133	132	eqcomd 2784	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((𝑓 ∈ (ℝ ↑𝑚 𝑋) ∧ 𝑖 ∈ 𝑋) → (abs‘(𝑓‘𝑖)) = ((abs ∘ 𝑓)‘𝑖))
134		absfun 40478	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 ⊢ Fun abs
135	134	a1i 11	. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ⊢ (𝑓 ∈ (ℝ ↑𝑚 𝑋) → Fun abs)
136		funco 6175	. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ⊢ ((Fun abs ∧ Fun 𝑓) → Fun (abs ∘ 𝑓))
137	135, 125, 136	syl2anc 579	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ (𝑓 ∈ (ℝ ↑𝑚 𝑋) → Fun (abs ∘ 𝑓))
138	137	adantr 474	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ ((𝑓 ∈ (ℝ ↑𝑚 𝑋) ∧ 𝑖 ∈ 𝑋) → Fun (abs ∘ 𝑓))
139	108, 48	syl6eleq 2869	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ ((𝑓 ∈ (ℝ ↑𝑚 𝑋) ∧ 𝑖 ∈ 𝑋) → (𝑓‘𝑖) ∈ dom abs)
140		dmfco 6532	. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 ⊢ ((Fun 𝑓 ∧ 𝑖 ∈ dom 𝑓) → (𝑖 ∈ dom (abs ∘ 𝑓) ↔ (𝑓‘𝑖) ∈ dom abs))
141	126, 130, 140	syl2anc 579	. . . . . . . . . . . . . . . . . . . . . . . . . . . 28 ⊢ ((𝑓 ∈ (ℝ ↑𝑚 𝑋) ∧ 𝑖 ∈ 𝑋) → (𝑖 ∈ dom (abs ∘ 𝑓) ↔ (𝑓‘𝑖) ∈ dom abs))
142	139, 141	mpbird 249	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ ((𝑓 ∈ (ℝ ↑𝑚 𝑋) ∧ 𝑖 ∈ 𝑋) → 𝑖 ∈ dom (abs ∘ 𝑓))
143		fvelrn 6616	. . . . . . . . . . . . . . . . . . . . . . . . . . 27 ⊢ ((Fun (abs ∘ 𝑓) ∧ 𝑖 ∈ dom (abs ∘ 𝑓)) → ((abs ∘ 𝑓)‘𝑖) ∈ ran (abs ∘ 𝑓))
144	138, 142, 143	syl2anc 579	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ ((𝑓 ∈ (ℝ ↑𝑚 𝑋) ∧ 𝑖 ∈ 𝑋) → ((abs ∘ 𝑓)‘𝑖) ∈ ran (abs ∘ 𝑓))
145	133, 144	eqeltrd 2859	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ ((𝑓 ∈ (ℝ ↑𝑚 𝑋) ∧ 𝑖 ∈ 𝑋) → (abs‘(𝑓‘𝑖)) ∈ ran (abs ∘ 𝑓))
146	145	adantll 704	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ (((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑖 ∈ 𝑋) → (abs‘(𝑓‘𝑖)) ∈ ran (abs ∘ 𝑓))
147	146	3ad2antl1 1193	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → (abs‘(𝑓‘𝑖)) ∈ ran (abs ∘ 𝑓))
148		suprub 11338	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (((ran (abs ∘ 𝑓) ⊆ ℝ ∧ ran (abs ∘ 𝑓) ≠ ∅ ∧ ∃𝑦 ∈ ℝ ∀𝑧 ∈ ran (abs ∘ 𝑓)𝑧 ≤ 𝑦) ∧ (abs‘(𝑓‘𝑖)) ∈ ran (abs ∘ 𝑓)) → (abs‘(𝑓‘𝑖)) ≤ sup(ran (abs ∘ 𝑓), ℝ, < ))
149	118, 120, 124, 147, 148	syl31anc 1441	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → (abs‘(𝑓‘𝑖)) ≤ sup(ran (abs ∘ 𝑓), ℝ, < ))
150	100, 111, 106, 117, 149	letrd 10533	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → -(𝑓‘𝑖) ≤ sup(ran (abs ∘ 𝑓), ℝ, < ))
151		simpl3 1203	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗)
152	100, 106, 96, 150, 151	lelttrd 10534	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → -(𝑓‘𝑖) < 𝑗)
153	100, 96	ltnegd 10953	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → (-(𝑓‘𝑖) < 𝑗 ↔ -𝑗 < --(𝑓‘𝑖)))
154	152, 153	mpbid 224	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → -𝑗 < --(𝑓‘𝑖))
155	36, 99	sseldi 3819	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → (𝑓‘𝑖) ∈ ℂ)
156	155	negnegd 10725	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → --(𝑓‘𝑖) = (𝑓‘𝑖))
157	154, 156	breqtrd 4912	. . . . . . . . . . . . . . . . . 18 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → -𝑗 < (𝑓‘𝑖))
158	97, 99, 157	ltled 10524	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → -𝑗 ≤ (𝑓‘𝑖))
159	99	leabsd 14561	. . . . . . . . . . . . . . . . . . 19 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → (𝑓‘𝑖) ≤ (abs‘(𝑓‘𝑖)))
160	99, 111, 106, 159, 149	letrd 10533	. . . . . . . . . . . . . . . . . 18 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → (𝑓‘𝑖) ≤ sup(ran (abs ∘ 𝑓), ℝ, < ))
161	99, 106, 96, 160, 151	lelttrd 10534	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → (𝑓‘𝑖) < 𝑗)
162	85, 88, 93, 158, 161	elicod 12536	. . . . . . . . . . . . . . . 16 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → (𝑓‘𝑖) ∈ (-𝑗[,)𝑗))
163	73, 75, 76, 77, 162	syl31anc 1441	. . . . . . . . . . . . . . 15 ⊢ (((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ) ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → (𝑓‘𝑖) ∈ (-𝑗[,)𝑗))
164	163	adantl3r 740	. . . . . . . . . . . . . 14 ⊢ ((((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ ¬ 𝑋 = ∅) ∧ 𝑗 ∈ ℕ) ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → (𝑓‘𝑖) ∈ (-𝑗[,)𝑗))
165		simpr 479	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ((𝜑 ∧ 𝑗 ∈ ℕ) → 𝑗 ∈ ℕ)
166		mptexg 6756	. . . . . . . . . . . . . . . . . . . . . . . . . 26 ⊢ (𝑋 ∈ Fin → (𝑥 ∈ 𝑋 ↦ ⟨-𝑗, 𝑗⟩) ∈ V)
167	41, 166	syl 17	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ (𝜑 → (𝑥 ∈ 𝑋 ↦ ⟨-𝑗, 𝑗⟩) ∈ V)
168	167	adantr 474	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ((𝜑 ∧ 𝑗 ∈ ℕ) → (𝑥 ∈ 𝑋 ↦ ⟨-𝑗, 𝑗⟩) ∈ V)
169		hoicvr.2	. . . . . . . . . . . . . . . . . . . . . . . . 25 ⊢ 𝐼 = (𝑗 ∈ ℕ ↦ (𝑥 ∈ 𝑋 ↦ ⟨-𝑗, 𝑗⟩))
170	169	fvmpt2 6552	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ((𝑗 ∈ ℕ ∧ (𝑥 ∈ 𝑋 ↦ ⟨-𝑗, 𝑗⟩) ∈ V) → (𝐼‘𝑗) = (𝑥 ∈ 𝑋 ↦ ⟨-𝑗, 𝑗⟩))
171	165, 168, 170	syl2anc 579	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ ((𝜑 ∧ 𝑗 ∈ ℕ) → (𝐼‘𝑗) = (𝑥 ∈ 𝑋 ↦ ⟨-𝑗, 𝑗⟩))
172	171	fveq1d 6448	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ ((𝜑 ∧ 𝑗 ∈ ℕ) → ((𝐼‘𝑗)‘𝑖) = ((𝑥 ∈ 𝑋 ↦ ⟨-𝑗, 𝑗⟩)‘𝑖))
173	172	3adant3 1123	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝜑 ∧ 𝑗 ∈ ℕ ∧ 𝑖 ∈ 𝑋) → ((𝐼‘𝑗)‘𝑖) = ((𝑥 ∈ 𝑋 ↦ ⟨-𝑗, 𝑗⟩)‘𝑖))
174		eqidd 2779	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (𝑖 ∈ 𝑋 → (𝑥 ∈ 𝑋 ↦ ⟨-𝑗, 𝑗⟩) = (𝑥 ∈ 𝑋 ↦ ⟨-𝑗, 𝑗⟩))
175		eqid 2778	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ⟨-𝑗, 𝑗⟩ = ⟨-𝑗, 𝑗⟩
176	175	a1i 11	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ ((𝑖 ∈ 𝑋 ∧ 𝑥 = 𝑖) → ⟨-𝑗, 𝑗⟩ = ⟨-𝑗, 𝑗⟩)
177		id 22	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (𝑖 ∈ 𝑋 → 𝑖 ∈ 𝑋)
178		opex 5164	. . . . . . . . . . . . . . . . . . . . . . . 24 ⊢ ⟨-𝑗, 𝑗⟩ ∈ V
179	178	a1i 11	. . . . . . . . . . . . . . . . . . . . . . 23 ⊢ (𝑖 ∈ 𝑋 → ⟨-𝑗, 𝑗⟩ ∈ V)
180	174, 176, 177, 179	fvmptd 6548	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (𝑖 ∈ 𝑋 → ((𝑥 ∈ 𝑋 ↦ ⟨-𝑗, 𝑗⟩)‘𝑖) = ⟨-𝑗, 𝑗⟩)
181	180	3ad2ant3 1126	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝜑 ∧ 𝑗 ∈ ℕ ∧ 𝑖 ∈ 𝑋) → ((𝑥 ∈ 𝑋 ↦ ⟨-𝑗, 𝑗⟩)‘𝑖) = ⟨-𝑗, 𝑗⟩)
182	173, 181	eqtrd 2814	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝜑 ∧ 𝑗 ∈ ℕ ∧ 𝑖 ∈ 𝑋) → ((𝐼‘𝑗)‘𝑖) = ⟨-𝑗, 𝑗⟩)
183	182	fveq2d 6450	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝜑 ∧ 𝑗 ∈ ℕ ∧ 𝑖 ∈ 𝑋) → (1st ‘((𝐼‘𝑗)‘𝑖)) = (1st ‘⟨-𝑗, 𝑗⟩))
184		negex 10620	. . . . . . . . . . . . . . . . . . . . 21 ⊢ -𝑗 ∈ V
185		vex 3401	. . . . . . . . . . . . . . . . . . . . 21 ⊢ 𝑗 ∈ V
186	184, 185	op1st 7453	. . . . . . . . . . . . . . . . . . . 20 ⊢ (1st ‘⟨-𝑗, 𝑗⟩) = -𝑗
187	186	a1i 11	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝜑 ∧ 𝑗 ∈ ℕ ∧ 𝑖 ∈ 𝑋) → (1st ‘⟨-𝑗, 𝑗⟩) = -𝑗)
188	183, 187	eqtrd 2814	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝜑 ∧ 𝑗 ∈ ℕ ∧ 𝑖 ∈ 𝑋) → (1st ‘((𝐼‘𝑗)‘𝑖)) = -𝑗)
189	182	fveq2d 6450	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝜑 ∧ 𝑗 ∈ ℕ ∧ 𝑖 ∈ 𝑋) → (2nd ‘((𝐼‘𝑗)‘𝑖)) = (2nd ‘⟨-𝑗, 𝑗⟩))
190	184, 185	op2nd 7454	. . . . . . . . . . . . . . . . . . . 20 ⊢ (2nd ‘⟨-𝑗, 𝑗⟩) = 𝑗
191	190	a1i 11	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝜑 ∧ 𝑗 ∈ ℕ ∧ 𝑖 ∈ 𝑋) → (2nd ‘⟨-𝑗, 𝑗⟩) = 𝑗)
192	189, 191	eqtrd 2814	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝜑 ∧ 𝑗 ∈ ℕ ∧ 𝑖 ∈ 𝑋) → (2nd ‘((𝐼‘𝑗)‘𝑖)) = 𝑗)
193	188, 192	oveq12d 6940	. . . . . . . . . . . . . . . . 17 ⊢ ((𝜑 ∧ 𝑗 ∈ ℕ ∧ 𝑖 ∈ 𝑋) → ((1st ‘((𝐼‘𝑗)‘𝑖))[,)(2nd ‘((𝐼‘𝑗)‘𝑖))) = (-𝑗[,)𝑗))
194	193	eqcomd 2784	. . . . . . . . . . . . . . . 16 ⊢ ((𝜑 ∧ 𝑗 ∈ ℕ ∧ 𝑖 ∈ 𝑋) → (-𝑗[,)𝑗) = ((1st ‘((𝐼‘𝑗)‘𝑖))[,)(2nd ‘((𝐼‘𝑗)‘𝑖))))
195	194	3adant1r 1180	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ 𝑗 ∈ ℕ ∧ 𝑖 ∈ 𝑋) → (-𝑗[,)𝑗) = ((1st ‘((𝐼‘𝑗)‘𝑖))[,)(2nd ‘((𝐼‘𝑗)‘𝑖))))
196	195	ad5ant135 1434	. . . . . . . . . . . . . 14 ⊢ ((((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ ¬ 𝑋 = ∅) ∧ 𝑗 ∈ ℕ) ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → (-𝑗[,)𝑗) = ((1st ‘((𝐼‘𝑗)‘𝑖))[,)(2nd ‘((𝐼‘𝑗)‘𝑖))))
197	164, 196	eleqtrd 2861	. . . . . . . . . . . . 13 ⊢ ((((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ ¬ 𝑋 = ∅) ∧ 𝑗 ∈ ℕ) ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → (𝑓‘𝑖) ∈ ((1st ‘((𝐼‘𝑗)‘𝑖))[,)(2nd ‘((𝐼‘𝑗)‘𝑖))))
198	79, 82	sseldi 3819	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑗 ∈ ℕ → -𝑗 ∈ ℝ)
199		opelxpi 5392	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((-𝑗 ∈ ℝ ∧ 𝑗 ∈ ℝ) → ⟨-𝑗, 𝑗⟩ ∈ (ℝ × ℝ))
200	198, 94, 199	syl2anc 579	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑗 ∈ ℕ → ⟨-𝑗, 𝑗⟩ ∈ (ℝ × ℝ))
201	200	ad2antlr 717	. . . . . . . . . . . . . . . . . . 19 ⊢ (((𝜑 ∧ 𝑗 ∈ ℕ) ∧ 𝑥 ∈ 𝑋) → ⟨-𝑗, 𝑗⟩ ∈ (ℝ × ℝ))
202		eqid 2778	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑥 ∈ 𝑋 ↦ ⟨-𝑗, 𝑗⟩) = (𝑥 ∈ 𝑋 ↦ ⟨-𝑗, 𝑗⟩)
203	201, 202	fmptd 6648	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝜑 ∧ 𝑗 ∈ ℕ) → (𝑥 ∈ 𝑋 ↦ ⟨-𝑗, 𝑗⟩):𝑋⟶(ℝ × ℝ))
204	171	feq1d 6276	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝜑 ∧ 𝑗 ∈ ℕ) → ((𝐼‘𝑗):𝑋⟶(ℝ × ℝ) ↔ (𝑥 ∈ 𝑋 ↦ ⟨-𝑗, 𝑗⟩):𝑋⟶(ℝ × ℝ)))
205	203, 204	mpbird 249	. . . . . . . . . . . . . . . . 17 ⊢ ((𝜑 ∧ 𝑗 ∈ ℕ) → (𝐼‘𝑗):𝑋⟶(ℝ × ℝ))
206	205	ad4ant14 742	. . . . . . . . . . . . . . . 16 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ ¬ 𝑋 = ∅) ∧ 𝑗 ∈ ℕ) → (𝐼‘𝑗):𝑋⟶(ℝ × ℝ))
207	206	ad2antrr 716	. . . . . . . . . . . . . . 15 ⊢ ((((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ ¬ 𝑋 = ∅) ∧ 𝑗 ∈ ℕ) ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → (𝐼‘𝑗):𝑋⟶(ℝ × ℝ))
208		simpr 479	. . . . . . . . . . . . . . 15 ⊢ ((((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ ¬ 𝑋 = ∅) ∧ 𝑗 ∈ ℕ) ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → 𝑖 ∈ 𝑋)
209	207, 208	fvovco 40308	. . . . . . . . . . . . . 14 ⊢ ((((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ ¬ 𝑋 = ∅) ∧ 𝑗 ∈ ℕ) ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → (([,) ∘ (𝐼‘𝑗))‘𝑖) = ((1st ‘((𝐼‘𝑗)‘𝑖))[,)(2nd ‘((𝐼‘𝑗)‘𝑖))))
210	209	eqcomd 2784	. . . . . . . . . . . . 13 ⊢ ((((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ ¬ 𝑋 = ∅) ∧ 𝑗 ∈ ℕ) ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → ((1st ‘((𝐼‘𝑗)‘𝑖))[,)(2nd ‘((𝐼‘𝑗)‘𝑖))) = (([,) ∘ (𝐼‘𝑗))‘𝑖))
211	197, 210	eleqtrd 2861	. . . . . . . . . . . 12 ⊢ ((((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ ¬ 𝑋 = ∅) ∧ 𝑗 ∈ ℕ) ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) ∧ 𝑖 ∈ 𝑋) → (𝑓‘𝑖) ∈ (([,) ∘ (𝐼‘𝑗))‘𝑖))
212	211	ralrimiva 3148	. . . . . . . . . . 11 ⊢ (((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ ¬ 𝑋 = ∅) ∧ 𝑗 ∈ ℕ) ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) → ∀𝑖 ∈ 𝑋 (𝑓‘𝑖) ∈ (([,) ∘ (𝐼‘𝑗))‘𝑖))
213	72, 212	jca 507	. . . . . . . . . 10 ⊢ (((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ ¬ 𝑋 = ∅) ∧ 𝑗 ∈ ℕ) ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) → (𝑓 Fn 𝑋 ∧ ∀𝑖 ∈ 𝑋 (𝑓‘𝑖) ∈ (([,) ∘ (𝐼‘𝑗))‘𝑖)))
214		vex 3401	. . . . . . . . . . 11 ⊢ 𝑓 ∈ V
215	214	elixp 8201	. . . . . . . . . 10 ⊢ (𝑓 ∈ X𝑖 ∈ 𝑋 (([,) ∘ (𝐼‘𝑗))‘𝑖) ↔ (𝑓 Fn 𝑋 ∧ ∀𝑖 ∈ 𝑋 (𝑓‘𝑖) ∈ (([,) ∘ (𝐼‘𝑗))‘𝑖)))
216	213, 215	sylibr 226	. . . . . . . . 9 ⊢ (((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ ¬ 𝑋 = ∅) ∧ 𝑗 ∈ ℕ) ∧ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗) → 𝑓 ∈ X𝑖 ∈ 𝑋 (([,) ∘ (𝐼‘𝑗))‘𝑖))
217	216	ex 403	. . . . . . . 8 ⊢ ((((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ ¬ 𝑋 = ∅) ∧ 𝑗 ∈ ℕ) → (sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗 → 𝑓 ∈ X𝑖 ∈ 𝑋 (([,) ∘ (𝐼‘𝑗))‘𝑖)))
218	217	reximdva 3198	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ ¬ 𝑋 = ∅) → (∃𝑗 ∈ ℕ sup(ran (abs ∘ 𝑓), ℝ, < ) < 𝑗 → ∃𝑗 ∈ ℕ 𝑓 ∈ X𝑖 ∈ 𝑋 (([,) ∘ (𝐼‘𝑗))‘𝑖)))
219	69, 218	mpd 15	. . . . . 6 ⊢ (((𝜑 ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) ∧ ¬ 𝑋 = ∅) → ∃𝑗 ∈ ℕ 𝑓 ∈ X𝑖 ∈ 𝑋 (([,) ∘ (𝐼‘𝑗))‘𝑖))
220	22, 23, 24, 219	syl21anc 828	. . . . 5 ⊢ (((𝜑 ∧ ¬ 𝑋 = ∅) ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) → ∃𝑗 ∈ ℕ 𝑓 ∈ X𝑖 ∈ 𝑋 (([,) ∘ (𝐼‘𝑗))‘𝑖))
221		eliun 4757	. . . . 5 ⊢ (𝑓 ∈ ∪ 𝑗 ∈ ℕ X𝑖 ∈ 𝑋 (([,) ∘ (𝐼‘𝑗))‘𝑖) ↔ ∃𝑗 ∈ ℕ 𝑓 ∈ X𝑖 ∈ 𝑋 (([,) ∘ (𝐼‘𝑗))‘𝑖))
222	220, 221	sylibr 226	. . . 4 ⊢ (((𝜑 ∧ ¬ 𝑋 = ∅) ∧ 𝑓 ∈ (ℝ ↑𝑚 𝑋)) → 𝑓 ∈ ∪ 𝑗 ∈ ℕ X𝑖 ∈ 𝑋 (([,) ∘ (𝐼‘𝑗))‘𝑖))
223	222	ralrimiva 3148	. . 3 ⊢ ((𝜑 ∧ ¬ 𝑋 = ∅) → ∀𝑓 ∈ (ℝ ↑𝑚 𝑋)𝑓 ∈ ∪ 𝑗 ∈ ℕ X𝑖 ∈ 𝑋 (([,) ∘ (𝐼‘𝑗))‘𝑖))
224		dfss3 3810	. . 3 ⊢ ((ℝ ↑𝑚 𝑋) ⊆ ∪ 𝑗 ∈ ℕ X𝑖 ∈ 𝑋 (([,) ∘ (𝐼‘𝑗))‘𝑖) ↔ ∀𝑓 ∈ (ℝ ↑𝑚 𝑋)𝑓 ∈ ∪ 𝑗 ∈ ℕ X𝑖 ∈ 𝑋 (([,) ∘ (𝐼‘𝑗))‘𝑖))
225	223, 224	sylibr 226	. 2 ⊢ ((𝜑 ∧ ¬ 𝑋 = ∅) → (ℝ ↑𝑚 𝑋) ⊆ ∪ 𝑗 ∈ ℕ X𝑖 ∈ 𝑋 (([,) ∘ (𝐼‘𝑗))‘𝑖))
226	21, 225	pm2.61dan 803	1 ⊢ (𝜑 → (ℝ ↑𝑚 𝑋) ⊆ ∪ 𝑗 ∈ ℕ X𝑖 ∈ 𝑋 (([,) ∘ (𝐼‘𝑗))‘𝑖))

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 198   ∧ wa 386   ∧ w3a 1071   = wceq 1601   ∈ wcel 2107   ≠ wne 2969  ∀wral 3090  ∃wrex 3091  Vcvv 3398   ⊆ wss 3792  ∅c0 4141  {csn 4398  ⟨cop 4404  ∪ ciun 4753   class class class wbr 4886   ↦ cmpt 4965   Or wor 5273   × cxp 5353  dom cdm 5355  ran crn 5356   ∘ ccom 5359  Fun wfun 6129   Fn wfn 6130  ⟶wf 6131  ‘cfv 6135  (class class class)co 6922  1^st c1st 7443  2^nd c2nd 7444   ↑_𝑚 cmap 8140  Xcixp 8194  Fincfn 8241  supcsup 8634  ℂcc 10270  ℝcr 10271  1c1 10273  ℝ^*cxr 10410   < clt 10411   ≤ cle 10412  -cneg 10607  ℕcn 11374  ℤcz 11728  [,)cico 12489  abscabs 14381

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1839  ax-4 1853  ax-5 1953  ax-6 2021  ax-7 2055  ax-8 2109  ax-9 2116  ax-10 2135  ax-11 2150  ax-12 2163  ax-13 2334  ax-ext 2754  ax-rep 5006  ax-sep 5017  ax-nul 5025  ax-pow 5077  ax-pr 5138  ax-un 7226  ax-cnex 10328  ax-resscn 10329  ax-1cn 10330  ax-icn 10331  ax-addcl 10332  ax-addrcl 10333  ax-mulcl 10334  ax-mulrcl 10335  ax-mulcom 10336  ax-addass 10337  ax-mulass 10338  ax-distr 10339  ax-i2m1 10340  ax-1ne0 10341  ax-1rid 10342  ax-rnegex 10343  ax-rrecex 10344  ax-cnre 10345  ax-pre-lttri 10346  ax-pre-lttrn 10347  ax-pre-ltadd 10348  ax-pre-mulgt0 10349  ax-pre-sup 10350

This theorem depends on definitions:  df-bi 199  df-an 387  df-or 837  df-3or 1072  df-3an 1073  df-tru 1605  df-ex 1824  df-nf 1828  df-sb 2012  df-mo 2551  df-eu 2587  df-clab 2764  df-cleq 2770  df-clel 2774  df-nfc 2921  df-ne 2970  df-nel 3076  df-ral 3095  df-rex 3096  df-reu 3097  df-rmo 3098  df-rab 3099  df-v 3400  df-sbc 3653  df-csb 3752  df-dif 3795  df-un 3797  df-in 3799  df-ss 3806  df-pss 3808  df-nul 4142  df-if 4308  df-pw 4381  df-sn 4399  df-pr 4401  df-tp 4403  df-op 4405  df-uni 4672  df-int 4711  df-iun 4755  df-br 4887  df-opab 4949  df-mpt 4966  df-tr 4988  df-id 5261  df-eprel 5266  df-po 5274  df-so 5275  df-fr 5314  df-we 5316  df-xp 5361  df-rel 5362  df-cnv 5363  df-co 5364  df-dm 5365  df-rn 5366  df-res 5367  df-ima 5368  df-pred 5933  df-ord 5979  df-on 5980  df-lim 5981  df-suc 5982  df-iota 6099  df-fun 6137  df-fn 6138  df-f 6139  df-f1 6140  df-fo 6141  df-f1o 6142  df-fv 6143  df-riota 6883  df-ov 6925  df-oprab 6926  df-mpt2 6927  df-om 7344  df-1st 7445  df-2nd 7446  df-wrecs 7689  df-recs 7751  df-rdg 7789  df-1o 7843  df-oadd 7847  df-er 8026  df-map 8142  df-ixp 8195  df-en 8242  df-dom 8243  df-sdom 8244  df-fin 8245  df-sup 8636  df-pnf 10413  df-mnf 10414  df-xr 10415  df-ltxr 10416  df-le 10417  df-sub 10608  df-neg 10609  df-div 11033  df-nn 11375  df-2 11438  df-3 11439  df-n0 11643  df-z 11729  df-uz 11993  df-rp 12138  df-ico 12493  df-seq 13120  df-exp 13179  df-cj 14246  df-re 14247  df-im 14248  df-sqrt 14382  df-abs 14383

This theorem is referenced by:  hoicvrrex  41701