hspmbllem3 - Mathbox for Glauco Siliprandi

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Theorem hspmbllem3 46657

Description: Any half-space of the n-dimensional Real numbers is Lebesgue measurable. Lemma 115F of [Fremlin1] p. 31. This proof handles the non-trivial cases (nonzero dimension and finite outer measure). (Contributed by Glauco Siliprandi, 24-Dec-2020.)

**Hypotheses**
Ref	Expression
hspmbllem3.h	⊢ 𝐻 = (𝑥 ∈ Fin ↦ (𝑙 ∈ 𝑥, 𝑦 ∈ ℝ ↦ X𝑘 ∈ 𝑥 if(𝑘 = 𝑙, (-∞(,)𝑦), ℝ)))
hspmbllem3.x	⊢ (𝜑 → 𝑋 ∈ Fin)
hspmbllem3.i	⊢ (𝜑 → 𝐾 ∈ 𝑋)
hspmbllem3.y	⊢ (𝜑 → 𝑌 ∈ ℝ)
hspmbllem3.a	⊢ (𝜑 → ((voln*‘𝑋)‘𝐴) ∈ ℝ)
hspmbllem3.s	⊢ (𝜑 → 𝐴 ⊆ (ℝ ↑_m 𝑋))
hspmbllem3.c	⊢ 𝐶 = (𝑎 ∈ 𝒫 (ℝ ↑_m 𝑋) ↦ {𝑙 ∈ (((ℝ × ℝ) ↑_m 𝑋) ↑_m ℕ) ∣ 𝑎 ⊆ ∪ 𝑗 ∈ ℕ X𝑘 ∈ 𝑋 (([,) ∘ (𝑙‘𝑗))‘𝑘)})
hspmbllem3.l	⊢ 𝐿 = (ℎ ∈ ((ℝ × ℝ) ↑_m 𝑋) ↦ ∏𝑘 ∈ 𝑋 (vol‘(([,) ∘ ℎ)‘𝑘)))
hspmbllem3.d	⊢ 𝐷 = (𝑎 ∈ 𝒫 (ℝ ↑_m 𝑋) ↦ (𝑟 ∈ ℝ⁺ ↦ {𝑖 ∈ (𝐶‘𝑎) ∣ (Σ^{^}‘(𝑗 ∈ ℕ ↦ (𝐿‘(𝑖‘𝑗)))) ≤ (((voln*‘𝑋)‘𝑎) +_𝑒 𝑟)}))
hspmbllem3.10	⊢ 𝐵 = (𝑗 ∈ ℕ ↦ (𝑘 ∈ 𝑋 ↦ (1^st ‘((𝑖‘𝑗)‘𝑘))))
hspmbllem3.11	⊢ 𝑇 = (𝑗 ∈ ℕ ↦ (𝑘 ∈ 𝑋 ↦ (2^nd ‘((𝑖‘𝑗)‘𝑘))))

**Assertion**
Ref	Expression
hspmbllem3	⊢ (𝜑 → (((voln‘𝑋)‘(𝐴 ∩ (𝐾(𝐻‘𝑋)𝑌))) +_𝑒 ((voln‘𝑋)‘(𝐴 ∖ (𝐾(𝐻‘𝑋)𝑌)))) ≤ ((voln*‘𝑋)‘𝐴))

Distinct variable groups: 𝐴,𝑎,ℎ,𝑖,𝑗,𝑘,𝑙,𝑥,𝑦 𝐴,𝑟,𝑎,ℎ,𝑖,𝑗 𝐵,𝑎,ℎ,𝑘,𝑙 𝐶,𝑎,ℎ,𝑖,𝑟 𝐷,𝑎,ℎ,𝑗,𝑘,𝑙,𝑥,𝑦 𝐷,𝑟 𝑖,𝐻,𝑗,𝑘 𝐾,𝑎,ℎ,𝑖,𝑗,𝑘,𝑙,𝑥,𝑦 𝐿,𝑎,ℎ,𝑖,𝑟 𝑇,𝑎,ℎ,𝑗,𝑘,𝑙 𝑋,𝑎,ℎ,𝑖,𝑗,𝑘,𝑙,𝑥,𝑦 𝑋,𝑟 𝑌,𝑎,ℎ,𝑖,𝑗,𝑘,𝑙,𝑥,𝑦 𝜑,𝑎,ℎ,𝑖,𝑗,𝑘,𝑙,𝑥,𝑦 𝜑,𝑟 Allowed substitution hints: 𝐵(𝑥,𝑦,𝑖,𝑗,𝑟) 𝐶(𝑥,𝑦,𝑗,𝑘,𝑙) 𝐷(𝑖) 𝑇(𝑥,𝑦,𝑖,𝑟) 𝐻(𝑥,𝑦,ℎ,𝑟,𝑎,𝑙) 𝐾(𝑟) 𝐿(𝑥,𝑦,𝑗,𝑘,𝑙) 𝑌(𝑟)

Proof of Theorem hspmbllem3 Dummy variables 𝑏 𝑐 𝑒 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		hspmbllem3.a	. . . 4 ⊢ (𝜑 → ((voln*‘𝑋)‘𝐴) ∈ ℝ)
2		hspmbllem3.x	. . . . 5 ⊢ (𝜑 → 𝑋 ∈ Fin)
3		inss1 4212	. . . . . 6 ⊢ (𝐴 ∩ (𝐾(𝐻‘𝑋)𝑌)) ⊆ 𝐴
4		hspmbllem3.s	. . . . . 6 ⊢ (𝜑 → 𝐴 ⊆ (ℝ ↑_m 𝑋))
5	3, 4	sstrid 3970	. . . . 5 ⊢ (𝜑 → (𝐴 ∩ (𝐾(𝐻‘𝑋)𝑌)) ⊆ (ℝ ↑_m 𝑋))
6	2, 5	ovncl 46596	. . . 4 ⊢ (𝜑 → ((voln*‘𝑋)‘(𝐴 ∩ (𝐾(𝐻‘𝑋)𝑌))) ∈ (0[,]+∞))
7	3	a1i 11	. . . . 5 ⊢ (𝜑 → (𝐴 ∩ (𝐾(𝐻‘𝑋)𝑌)) ⊆ 𝐴)
8	2, 7, 4	ovnssle 46590	. . . 4 ⊢ (𝜑 → ((voln‘𝑋)‘(𝐴 ∩ (𝐾(𝐻‘𝑋)𝑌))) ≤ ((voln‘𝑋)‘𝐴))
9	1, 6, 8	ge0lere 45561	. . 3 ⊢ (𝜑 → ((voln*‘𝑋)‘(𝐴 ∩ (𝐾(𝐻‘𝑋)𝑌))) ∈ ℝ)
10	4	ssdifssd 4122	. . . . 5 ⊢ (𝜑 → (𝐴 ∖ (𝐾(𝐻‘𝑋)𝑌)) ⊆ (ℝ ↑_m 𝑋))
11	2, 10	ovncl 46596	. . . 4 ⊢ (𝜑 → ((voln*‘𝑋)‘(𝐴 ∖ (𝐾(𝐻‘𝑋)𝑌))) ∈ (0[,]+∞))
12		difssd 4112	. . . . 5 ⊢ (𝜑 → (𝐴 ∖ (𝐾(𝐻‘𝑋)𝑌)) ⊆ 𝐴)
13	2, 12, 4	ovnssle 46590	. . . 4 ⊢ (𝜑 → ((voln‘𝑋)‘(𝐴 ∖ (𝐾(𝐻‘𝑋)𝑌))) ≤ ((voln‘𝑋)‘𝐴))
14	1, 11, 13	ge0lere 45561	. . 3 ⊢ (𝜑 → ((voln*‘𝑋)‘(𝐴 ∖ (𝐾(𝐻‘𝑋)𝑌))) ∈ ℝ)
15		rexadd 13248	. . 3 ⊢ ((((voln‘𝑋)‘(𝐴 ∩ (𝐾(𝐻‘𝑋)𝑌))) ∈ ℝ ∧ ((voln‘𝑋)‘(𝐴 ∖ (𝐾(𝐻‘𝑋)𝑌))) ∈ ℝ) → (((voln‘𝑋)‘(𝐴 ∩ (𝐾(𝐻‘𝑋)𝑌))) +_𝑒 ((voln‘𝑋)‘(𝐴 ∖ (𝐾(𝐻‘𝑋)𝑌)))) = (((voln‘𝑋)‘(𝐴 ∩ (𝐾(𝐻‘𝑋)𝑌))) + ((voln‘𝑋)‘(𝐴 ∖ (𝐾(𝐻‘𝑋)𝑌)))))
16	9, 14, 15	syl2anc 584	. 2 ⊢ (𝜑 → (((voln‘𝑋)‘(𝐴 ∩ (𝐾(𝐻‘𝑋)𝑌))) +_𝑒 ((voln‘𝑋)‘(𝐴 ∖ (𝐾(𝐻‘𝑋)𝑌)))) = (((voln‘𝑋)‘(𝐴 ∩ (𝐾(𝐻‘𝑋)𝑌))) + ((voln‘𝑋)‘(𝐴 ∖ (𝐾(𝐻‘𝑋)𝑌)))))
17	2	adantr 480	. . . . . 6 ⊢ ((𝜑 ∧ 𝑒 ∈ ℝ⁺) → 𝑋 ∈ Fin)
18		hspmbllem3.i	. . . . . . . 8 ⊢ (𝜑 → 𝐾 ∈ 𝑋)
19	18	ne0d 4317	. . . . . . 7 ⊢ (𝜑 → 𝑋 ≠ ∅)
20	19	adantr 480	. . . . . 6 ⊢ ((𝜑 ∧ 𝑒 ∈ ℝ⁺) → 𝑋 ≠ ∅)
21	4	adantr 480	. . . . . 6 ⊢ ((𝜑 ∧ 𝑒 ∈ ℝ⁺) → 𝐴 ⊆ (ℝ ↑_m 𝑋))
22		simpr 484	. . . . . 6 ⊢ ((𝜑 ∧ 𝑒 ∈ ℝ⁺) → 𝑒 ∈ ℝ⁺)
23		hspmbllem3.c	. . . . . 6 ⊢ 𝐶 = (𝑎 ∈ 𝒫 (ℝ ↑_m 𝑋) ↦ {𝑙 ∈ (((ℝ × ℝ) ↑_m 𝑋) ↑_m ℕ) ∣ 𝑎 ⊆ ∪ 𝑗 ∈ ℕ X𝑘 ∈ 𝑋 (([,) ∘ (𝑙‘𝑗))‘𝑘)})
24		hspmbllem3.l	. . . . . 6 ⊢ 𝐿 = (ℎ ∈ ((ℝ × ℝ) ↑_m 𝑋) ↦ ∏𝑘 ∈ 𝑋 (vol‘(([,) ∘ ℎ)‘𝑘)))
25		hspmbllem3.d	. . . . . 6 ⊢ 𝐷 = (𝑎 ∈ 𝒫 (ℝ ↑_m 𝑋) ↦ (𝑟 ∈ ℝ⁺ ↦ {𝑖 ∈ (𝐶‘𝑎) ∣ (Σ^{^}‘(𝑗 ∈ ℕ ↦ (𝐿‘(𝑖‘𝑗)))) ≤ (((voln*‘𝑋)‘𝑎) +_𝑒 𝑟)}))
26	17, 20, 21, 22, 23, 24, 25	ovncvrrp 46593	. . . . 5 ⊢ ((𝜑 ∧ 𝑒 ∈ ℝ⁺) → ∃𝑖 𝑖 ∈ ((𝐷‘𝐴)‘𝑒))
27		hspmbllem3.h	. . . . . . . 8 ⊢ 𝐻 = (𝑥 ∈ Fin ↦ (𝑙 ∈ 𝑥, 𝑦 ∈ ℝ ↦ X𝑘 ∈ 𝑥 if(𝑘 = 𝑙, (-∞(,)𝑦), ℝ)))
28	17	adantr 480	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑒 ∈ ℝ⁺) ∧ 𝑖 ∈ ((𝐷‘𝐴)‘𝑒)) → 𝑋 ∈ Fin)
29	18	ad2antrr 726	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑒 ∈ ℝ⁺) ∧ 𝑖 ∈ ((𝐷‘𝐴)‘𝑒)) → 𝐾 ∈ 𝑋)
30		hspmbllem3.y	. . . . . . . . 9 ⊢ (𝜑 → 𝑌 ∈ ℝ)
31	30	ad2antrr 726	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑒 ∈ ℝ⁺) ∧ 𝑖 ∈ ((𝐷‘𝐴)‘𝑒)) → 𝑌 ∈ ℝ)
32	22	adantr 480	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑒 ∈ ℝ⁺) ∧ 𝑖 ∈ ((𝐷‘𝐴)‘𝑒)) → 𝑒 ∈ ℝ⁺)
33	21	adantr 480	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑒 ∈ ℝ⁺) ∧ 𝑖 ∈ ((𝐷‘𝐴)‘𝑒)) → 𝐴 ⊆ (ℝ ↑_m 𝑋))
34		fveq1 6875	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑖 = ℎ → (𝑖‘𝑗) = (ℎ‘𝑗))
35	34	fveq2d 6880	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑖 = ℎ → (𝐿‘(𝑖‘𝑗)) = (𝐿‘(ℎ‘𝑗)))
36	35	mpteq2dv 5215	. . . . . . . . . . . . . . . . 17 ⊢ (𝑖 = ℎ → (𝑗 ∈ ℕ ↦ (𝐿‘(𝑖‘𝑗))) = (𝑗 ∈ ℕ ↦ (𝐿‘(ℎ‘𝑗))))
37	36	fveq2d 6880	. . . . . . . . . . . . . . . 16 ⊢ (𝑖 = ℎ → (Σ^{^}‘(𝑗 ∈ ℕ ↦ (𝐿‘(𝑖‘𝑗)))) = (Σ^{^}‘(𝑗 ∈ ℕ ↦ (𝐿‘(ℎ‘𝑗)))))
38	37	breq1d 5129	. . . . . . . . . . . . . . 15 ⊢ (𝑖 = ℎ → ((Σ^{^}‘(𝑗 ∈ ℕ ↦ (𝐿‘(𝑖‘𝑗)))) ≤ (((voln‘𝑋)‘𝑎) +_𝑒 𝑟) ↔ (Σ^{^}‘(𝑗 ∈ ℕ ↦ (𝐿‘(ℎ‘𝑗)))) ≤ (((voln‘𝑋)‘𝑎) +_𝑒 𝑟)))
39	38	cbvrabv 3426	. . . . . . . . . . . . . 14 ⊢ {𝑖 ∈ (𝐶‘𝑎) ∣ (Σ^{^}‘(𝑗 ∈ ℕ ↦ (𝐿‘(𝑖‘𝑗)))) ≤ (((voln‘𝑋)‘𝑎) +_𝑒 𝑟)} = {ℎ ∈ (𝐶‘𝑎) ∣ (Σ^{^}‘(𝑗 ∈ ℕ ↦ (𝐿‘(ℎ‘𝑗)))) ≤ (((voln‘𝑋)‘𝑎) +_𝑒 𝑟)}
40	39	mpteq2i 5217	. . . . . . . . . . . . 13 ⊢ (𝑟 ∈ ℝ⁺ ↦ {𝑖 ∈ (𝐶‘𝑎) ∣ (Σ^{^}‘(𝑗 ∈ ℕ ↦ (𝐿‘(𝑖‘𝑗)))) ≤ (((voln‘𝑋)‘𝑎) +_𝑒 𝑟)}) = (𝑟 ∈ ℝ⁺ ↦ {ℎ ∈ (𝐶‘𝑎) ∣ (Σ^{^}‘(𝑗 ∈ ℕ ↦ (𝐿‘(ℎ‘𝑗)))) ≤ (((voln‘𝑋)‘𝑎) +_𝑒 𝑟)})
41	40	mpteq2i 5217	. . . . . . . . . . . 12 ⊢ (𝑎 ∈ 𝒫 (ℝ ↑_m 𝑋) ↦ (𝑟 ∈ ℝ⁺ ↦ {𝑖 ∈ (𝐶‘𝑎) ∣ (Σ^{^}‘(𝑗 ∈ ℕ ↦ (𝐿‘(𝑖‘𝑗)))) ≤ (((voln‘𝑋)‘𝑎) +_𝑒 𝑟)})) = (𝑎 ∈ 𝒫 (ℝ ↑_m 𝑋) ↦ (𝑟 ∈ ℝ⁺ ↦ {ℎ ∈ (𝐶‘𝑎) ∣ (Σ^{^}‘(𝑗 ∈ ℕ ↦ (𝐿‘(ℎ‘𝑗)))) ≤ (((voln‘𝑋)‘𝑎) +_𝑒 𝑟)}))
42	25, 41	eqtri 2758	. . . . . . . . . . 11 ⊢ 𝐷 = (𝑎 ∈ 𝒫 (ℝ ↑_m 𝑋) ↦ (𝑟 ∈ ℝ⁺ ↦ {ℎ ∈ (𝐶‘𝑎) ∣ (Σ^{^}‘(𝑗 ∈ ℕ ↦ (𝐿‘(ℎ‘𝑗)))) ≤ (((voln*‘𝑋)‘𝑎) +_𝑒 𝑟)}))
43		simpr 484	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑒 ∈ ℝ⁺) ∧ 𝑖 ∈ ((𝐷‘𝐴)‘𝑒)) → 𝑖 ∈ ((𝐷‘𝐴)‘𝑒))
44		hspmbllem3.10	. . . . . . . . . . 11 ⊢ 𝐵 = (𝑗 ∈ ℕ ↦ (𝑘 ∈ 𝑋 ↦ (1^st ‘((𝑖‘𝑗)‘𝑘))))
45		hspmbllem3.11	. . . . . . . . . . 11 ⊢ 𝑇 = (𝑗 ∈ ℕ ↦ (𝑘 ∈ 𝑋 ↦ (2^nd ‘((𝑖‘𝑗)‘𝑘))))
46	28, 33, 32, 23, 24, 42, 43, 44, 45	ovncvr2 46640	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝑒 ∈ ℝ⁺) ∧ 𝑖 ∈ ((𝐷‘𝐴)‘𝑒)) → (((𝐵:ℕ⟶(ℝ ↑_m 𝑋) ∧ 𝑇:ℕ⟶(ℝ ↑_m 𝑋)) ∧ 𝐴 ⊆ ∪ 𝑗 ∈ ℕ X𝑘 ∈ 𝑋 (((𝐵‘𝑗)‘𝑘)[,)((𝑇‘𝑗)‘𝑘))) ∧ (Σ^{^}‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ 𝑋 (vol‘(((𝐵‘𝑗)‘𝑘)[,)((𝑇‘𝑗)‘𝑘))))) ≤ (((voln*‘𝑋)‘𝐴) +_𝑒 𝑒)))
47	46	simplld 767	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑒 ∈ ℝ⁺) ∧ 𝑖 ∈ ((𝐷‘𝐴)‘𝑒)) → (𝐵:ℕ⟶(ℝ ↑_m 𝑋) ∧ 𝑇:ℕ⟶(ℝ ↑_m 𝑋)))
48	47	simpld 494	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑒 ∈ ℝ⁺) ∧ 𝑖 ∈ ((𝐷‘𝐴)‘𝑒)) → 𝐵:ℕ⟶(ℝ ↑_m 𝑋))
49	47	simprd 495	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑒 ∈ ℝ⁺) ∧ 𝑖 ∈ ((𝐷‘𝐴)‘𝑒)) → 𝑇:ℕ⟶(ℝ ↑_m 𝑋))
50	46	simplrd 769	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑒 ∈ ℝ⁺) ∧ 𝑖 ∈ ((𝐷‘𝐴)‘𝑒)) → 𝐴 ⊆ ∪ 𝑗 ∈ ℕ X𝑘 ∈ 𝑋 (((𝐵‘𝑗)‘𝑘)[,)((𝑇‘𝑗)‘𝑘)))
51	46	simprd 495	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑒 ∈ ℝ⁺) ∧ 𝑖 ∈ ((𝐷‘𝐴)‘𝑒)) → (Σ^{^}‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ 𝑋 (vol‘(((𝐵‘𝑗)‘𝑘)[,)((𝑇‘𝑗)‘𝑘))))) ≤ (((voln*‘𝑋)‘𝐴) +_𝑒 𝑒))
52	1	adantr 480	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑒 ∈ ℝ⁺) → ((voln*‘𝑋)‘𝐴) ∈ ℝ)
53	22	rpred 13051	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑒 ∈ ℝ⁺) → 𝑒 ∈ ℝ)
54	52, 53	rexaddd 13250	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑒 ∈ ℝ⁺) → (((voln‘𝑋)‘𝐴) +_𝑒 𝑒) = (((voln‘𝑋)‘𝐴) + 𝑒))
55	54	adantr 480	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑒 ∈ ℝ⁺) ∧ 𝑖 ∈ ((𝐷‘𝐴)‘𝑒)) → (((voln‘𝑋)‘𝐴) +_𝑒 𝑒) = (((voln‘𝑋)‘𝐴) + 𝑒))
56	51, 55	breqtrd 5145	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑒 ∈ ℝ⁺) ∧ 𝑖 ∈ ((𝐷‘𝐴)‘𝑒)) → (Σ^{^}‘(𝑗 ∈ ℕ ↦ ∏𝑘 ∈ 𝑋 (vol‘(((𝐵‘𝑗)‘𝑘)[,)((𝑇‘𝑗)‘𝑘))))) ≤ (((voln*‘𝑋)‘𝐴) + 𝑒))
57	1	ad2antrr 726	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑒 ∈ ℝ⁺) ∧ 𝑖 ∈ ((𝐷‘𝐴)‘𝑒)) → ((voln*‘𝑋)‘𝐴) ∈ ℝ)
58	9	ad2antrr 726	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑒 ∈ ℝ⁺) ∧ 𝑖 ∈ ((𝐷‘𝐴)‘𝑒)) → ((voln*‘𝑋)‘(𝐴 ∩ (𝐾(𝐻‘𝑋)𝑌))) ∈ ℝ)
59	14	ad2antrr 726	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑒 ∈ ℝ⁺) ∧ 𝑖 ∈ ((𝐷‘𝐴)‘𝑒)) → ((voln*‘𝑋)‘(𝐴 ∖ (𝐾(𝐻‘𝑋)𝑌))) ∈ ℝ)
60		eqid 2735	. . . . . . . 8 ⊢ (𝑥 ∈ Fin ↦ (𝑎 ∈ (ℝ ↑_m 𝑥), 𝑏 ∈ (ℝ ↑_m 𝑥) ↦ if(𝑥 = ∅, 0, ∏𝑘 ∈ 𝑥 (vol‘((𝑎‘𝑘)[,)(𝑏‘𝑘)))))) = (𝑥 ∈ Fin ↦ (𝑎 ∈ (ℝ ↑_m 𝑥), 𝑏 ∈ (ℝ ↑_m 𝑥) ↦ if(𝑥 = ∅, 0, ∏𝑘 ∈ 𝑥 (vol‘((𝑎‘𝑘)[,)(𝑏‘𝑘))))))
61		eqid 2735	. . . . . . . 8 ⊢ (𝑦 ∈ ℝ ↦ (𝑐 ∈ (ℝ ↑_m 𝑋) ↦ (ℎ ∈ 𝑋 ↦ if(ℎ ∈ (𝑋 ∖ {𝐾}), (𝑐‘ℎ), if((𝑐‘ℎ) ≤ 𝑦, (𝑐‘ℎ), 𝑦))))) = (𝑦 ∈ ℝ ↦ (𝑐 ∈ (ℝ ↑_m 𝑋) ↦ (ℎ ∈ 𝑋 ↦ if(ℎ ∈ (𝑋 ∖ {𝐾}), (𝑐‘ℎ), if((𝑐‘ℎ) ≤ 𝑦, (𝑐‘ℎ), 𝑦)))))
62		eqid 2735	. . . . . . . 8 ⊢ (𝑥 ∈ ℝ ↦ (𝑐 ∈ (ℝ ↑_m 𝑋) ↦ (ℎ ∈ 𝑋 ↦ if(ℎ = 𝐾, if(𝑥 ≤ (𝑐‘ℎ), (𝑐‘ℎ), 𝑥), (𝑐‘ℎ))))) = (𝑥 ∈ ℝ ↦ (𝑐 ∈ (ℝ ↑_m 𝑋) ↦ (ℎ ∈ 𝑋 ↦ if(ℎ = 𝐾, if(𝑥 ≤ (𝑐‘ℎ), (𝑐‘ℎ), 𝑥), (𝑐‘ℎ)))))
63	27, 28, 29, 31, 32, 48, 49, 50, 56, 57, 58, 59, 60, 61, 62	hspmbllem2 46656	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑒 ∈ ℝ⁺) ∧ 𝑖 ∈ ((𝐷‘𝐴)‘𝑒)) → (((voln‘𝑋)‘(𝐴 ∩ (𝐾(𝐻‘𝑋)𝑌))) + ((voln‘𝑋)‘(𝐴 ∖ (𝐾(𝐻‘𝑋)𝑌)))) ≤ (((voln*‘𝑋)‘𝐴) + 𝑒))
64	63	ex 412	. . . . . 6 ⊢ ((𝜑 ∧ 𝑒 ∈ ℝ⁺) → (𝑖 ∈ ((𝐷‘𝐴)‘𝑒) → (((voln‘𝑋)‘(𝐴 ∩ (𝐾(𝐻‘𝑋)𝑌))) + ((voln‘𝑋)‘(𝐴 ∖ (𝐾(𝐻‘𝑋)𝑌)))) ≤ (((voln*‘𝑋)‘𝐴) + 𝑒)))
65	64	exlimdv 1933	. . . . 5 ⊢ ((𝜑 ∧ 𝑒 ∈ ℝ⁺) → (∃𝑖 𝑖 ∈ ((𝐷‘𝐴)‘𝑒) → (((voln‘𝑋)‘(𝐴 ∩ (𝐾(𝐻‘𝑋)𝑌))) + ((voln‘𝑋)‘(𝐴 ∖ (𝐾(𝐻‘𝑋)𝑌)))) ≤ (((voln*‘𝑋)‘𝐴) + 𝑒)))
66	26, 65	mpd 15	. . . 4 ⊢ ((𝜑 ∧ 𝑒 ∈ ℝ⁺) → (((voln‘𝑋)‘(𝐴 ∩ (𝐾(𝐻‘𝑋)𝑌))) + ((voln‘𝑋)‘(𝐴 ∖ (𝐾(𝐻‘𝑋)𝑌)))) ≤ (((voln*‘𝑋)‘𝐴) + 𝑒))
67	66	ralrimiva 3132	. . 3 ⊢ (𝜑 → ∀𝑒 ∈ ℝ⁺ (((voln‘𝑋)‘(𝐴 ∩ (𝐾(𝐻‘𝑋)𝑌))) + ((voln‘𝑋)‘(𝐴 ∖ (𝐾(𝐻‘𝑋)𝑌)))) ≤ (((voln*‘𝑋)‘𝐴) + 𝑒))
68	9, 14	readdcld 11264	. . . 4 ⊢ (𝜑 → (((voln‘𝑋)‘(𝐴 ∩ (𝐾(𝐻‘𝑋)𝑌))) + ((voln‘𝑋)‘(𝐴 ∖ (𝐾(𝐻‘𝑋)𝑌)))) ∈ ℝ)
69		alrple 13222	. . . 4 ⊢ (((((voln‘𝑋)‘(𝐴 ∩ (𝐾(𝐻‘𝑋)𝑌))) + ((voln‘𝑋)‘(𝐴 ∖ (𝐾(𝐻‘𝑋)𝑌)))) ∈ ℝ ∧ ((voln‘𝑋)‘𝐴) ∈ ℝ) → ((((voln‘𝑋)‘(𝐴 ∩ (𝐾(𝐻‘𝑋)𝑌))) + ((voln‘𝑋)‘(𝐴 ∖ (𝐾(𝐻‘𝑋)𝑌)))) ≤ ((voln‘𝑋)‘𝐴) ↔ ∀𝑒 ∈ ℝ⁺ (((voln‘𝑋)‘(𝐴 ∩ (𝐾(𝐻‘𝑋)𝑌))) + ((voln‘𝑋)‘(𝐴 ∖ (𝐾(𝐻‘𝑋)𝑌)))) ≤ (((voln*‘𝑋)‘𝐴) + 𝑒)))
70	68, 1, 69	syl2anc 584	. . 3 ⊢ (𝜑 → ((((voln‘𝑋)‘(𝐴 ∩ (𝐾(𝐻‘𝑋)𝑌))) + ((voln‘𝑋)‘(𝐴 ∖ (𝐾(𝐻‘𝑋)𝑌)))) ≤ ((voln‘𝑋)‘𝐴) ↔ ∀𝑒 ∈ ℝ⁺ (((voln‘𝑋)‘(𝐴 ∩ (𝐾(𝐻‘𝑋)𝑌))) + ((voln‘𝑋)‘(𝐴 ∖ (𝐾(𝐻‘𝑋)𝑌)))) ≤ (((voln‘𝑋)‘𝐴) + 𝑒)))
71	67, 70	mpbird 257	. 2 ⊢ (𝜑 → (((voln‘𝑋)‘(𝐴 ∩ (𝐾(𝐻‘𝑋)𝑌))) + ((voln‘𝑋)‘(𝐴 ∖ (𝐾(𝐻‘𝑋)𝑌)))) ≤ ((voln*‘𝑋)‘𝐴))
72	16, 71	eqbrtrd 5141	1 ⊢ (𝜑 → (((voln‘𝑋)‘(𝐴 ∩ (𝐾(𝐻‘𝑋)𝑌))) +_𝑒 ((voln‘𝑋)‘(𝐴 ∖ (𝐾(𝐻‘𝑋)𝑌)))) ≤ ((voln*‘𝑋)‘𝐴))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1540 ∃wex 1779 ∈ wcel 2108 ≠ wne 2932 ∀wral 3051 {crab 3415 ∖ cdif 3923 ∩ cin 3925 ⊆ wss 3926 ∅c0 4308 ifcif 4500 𝒫 cpw 4575 {csn 4601 ∪ ciun 4967 class class class wbr 5119 ↦ cmpt 5201 × cxp 5652 ∘ ccom 5658 ⟶wf 6527 ‘cfv 6531 (class class class)co 7405 ∈ cmpo 7407 1^st c1st 7986 2^nd c2nd 7987 ↑_m cmap 8840 Xcixp 8911 Fincfn 8959 ℝcr 11128 0cc0 11129 + caddc 11132 -∞cmnf 11267 ≤ cle 11270 ℕcn 12240 ℝ⁺crp 13008 +_𝑒 cxad 13126 (,)cioo 13362 [,)cico 13364 ∏cprod 15919 volcvol 25416 Σ^{^}csumge0 46391 voln*covoln 46565

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 1910 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2157 ax-12 2177 ax-ext 2707 ax-rep 5249 ax-sep 5266 ax-nul 5276 ax-pow 5335 ax-pr 5402 ax-un 7729 ax-inf2 9655 ax-cnex 11185 ax-resscn 11186 ax-1cn 11187 ax-icn 11188 ax-addcl 11189 ax-addrcl 11190 ax-mulcl 11191 ax-mulrcl 11192 ax-mulcom 11193 ax-addass 11194 ax-mulass 11195 ax-distr 11196 ax-i2m1 11197 ax-1ne0 11198 ax-1rid 11199 ax-rnegex 11200 ax-rrecex 11201 ax-cnre 11202 ax-pre-lttri 11203 ax-pre-lttrn 11204 ax-pre-ltadd 11205 ax-pre-mulgt0 11206 ax-pre-sup 11207

This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2065 df-mo 2539 df-eu 2568 df-clab 2714 df-cleq 2727 df-clel 2809 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3061 df-rmo 3359 df-reu 3360 df-rab 3416 df-v 3461 df-sbc 3766 df-csb 3875 df-dif 3929 df-un 3931 df-in 3933 df-ss 3943 df-pss 3946 df-nul 4309 df-if 4501 df-pw 4577 df-sn 4602 df-pr 4604 df-op 4608 df-uni 4884 df-int 4923 df-iun 4969 df-br 5120 df-opab 5182 df-mpt 5202 df-tr 5230 df-id 5548 df-eprel 5553 df-po 5561 df-so 5562 df-fr 5606 df-se 5607 df-we 5608 df-xp 5660 df-rel 5661 df-cnv 5662 df-co 5663 df-dm 5664 df-rn 5665 df-res 5666 df-ima 5667 df-pred 6290 df-ord 6355 df-on 6356 df-lim 6357 df-suc 6358 df-iota 6484 df-fun 6533 df-fn 6534 df-f 6535 df-f1 6536 df-fo 6537 df-f1o 6538 df-fv 6539 df-isom 6540 df-riota 7362 df-ov 7408 df-oprab 7409 df-mpo 7410 df-of 7671 df-om 7862 df-1st 7988 df-2nd 7989 df-frecs 8280 df-wrecs 8311 df-recs 8385 df-rdg 8424 df-1o 8480 df-2o 8481 df-er 8719 df-map 8842 df-pm 8843 df-ixp 8912 df-en 8960 df-dom 8961 df-sdom 8962 df-fin 8963 df-fi 9423 df-sup 9454 df-inf 9455 df-oi 9524 df-dju 9915 df-card 9953 df-pnf 11271 df-mnf 11272 df-xr 11273 df-ltxr 11274 df-le 11275 df-sub 11468 df-neg 11469 df-div 11895 df-nn 12241 df-2 12303 df-3 12304 df-n0 12502 df-z 12589 df-uz 12853 df-q 12965 df-rp 13009 df-xneg 13128 df-xadd 13129 df-xmul 13130 df-ioo 13366 df-ico 13368 df-icc 13369 df-fz 13525 df-fzo 13672 df-fl 13809 df-seq 14020 df-exp 14080 df-hash 14349 df-cj 15118 df-re 15119 df-im 15120 df-sqrt 15254 df-abs 15255 df-clim 15504 df-rlim 15505 df-sum 15703 df-prod 15920 df-rest 17436 df-topgen 17457 df-psmet 21307 df-xmet 21308 df-met 21309 df-bl 21310 df-mopn 21311 df-top 22832 df-topon 22849 df-bases 22884 df-cmp 23325 df-ovol 25417 df-vol 25418 df-sumge0 46392 df-ovoln 46566

This theorem is referenced by: hspmbl 46658

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