inelcarsg - Mathbox for Thierry Arnoux

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Theorem inelcarsg 33299

Description: The Caratheodory measurable sets are closed under intersection. (Contributed by Thierry Arnoux, 18-May-2020.)

**Hypotheses**
Ref	Expression
carsgval.1	⊢ (𝜑 → 𝑂 ∈ 𝑉)
carsgval.2	⊢ (𝜑 → 𝑀:𝒫 𝑂⟶(0[,]+∞))
difelcarsg.1	⊢ (𝜑 → 𝐴 ∈ (toCaraSiga‘𝑀))
inelcarsg.1	⊢ ((𝜑 ∧ 𝑎 ∈ 𝒫 𝑂 ∧ 𝑏 ∈ 𝒫 𝑂) → (𝑀‘(𝑎 ∪ 𝑏)) ≤ ((𝑀‘𝑎) +_𝑒 (𝑀‘𝑏)))
inelcarsg.2	⊢ (𝜑 → 𝐵 ∈ (toCaraSiga‘𝑀))

**Assertion**
Ref	Expression
inelcarsg	⊢ (𝜑 → (𝐴 ∩ 𝐵) ∈ (toCaraSiga‘𝑀))

Distinct variable groups: 𝑀,𝑎 𝑂,𝑎 𝜑,𝑎 𝐴,𝑎,𝑏 𝐵,𝑎,𝑏 𝑀,𝑏 𝑂,𝑏 𝜑,𝑏 Allowed substitution hints: 𝑉(𝑎,𝑏)

Proof of Theorem inelcarsg Dummy variables 𝑒 𝑓 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		difelcarsg.1	. . . . . 6 ⊢ (𝜑 → 𝐴 ∈ (toCaraSiga‘𝑀))
2		carsgval.1	. . . . . . 7 ⊢ (𝜑 → 𝑂 ∈ 𝑉)
3		carsgval.2	. . . . . . 7 ⊢ (𝜑 → 𝑀:𝒫 𝑂⟶(0[,]+∞))
4	2, 3	elcarsg 33293	. . . . . 6 ⊢ (𝜑 → (𝐴 ∈ (toCaraSiga‘𝑀) ↔ (𝐴 ⊆ 𝑂 ∧ ∀𝑒 ∈ 𝒫 𝑂((𝑀‘(𝑒 ∩ 𝐴)) +_𝑒 (𝑀‘(𝑒 ∖ 𝐴))) = (𝑀‘𝑒))))
5	1, 4	mpbid 231	. . . . 5 ⊢ (𝜑 → (𝐴 ⊆ 𝑂 ∧ ∀𝑒 ∈ 𝒫 𝑂((𝑀‘(𝑒 ∩ 𝐴)) +_𝑒 (𝑀‘(𝑒 ∖ 𝐴))) = (𝑀‘𝑒)))
6	5	simpld 496	. . . 4 ⊢ (𝜑 → 𝐴 ⊆ 𝑂)
7		ssinss1 4237	. . . 4 ⊢ (𝐴 ⊆ 𝑂 → (𝐴 ∩ 𝐵) ⊆ 𝑂)
8	6, 7	syl 17	. . 3 ⊢ (𝜑 → (𝐴 ∩ 𝐵) ⊆ 𝑂)
9		iccssxr 13404	. . . . . . . . 9 ⊢ (0[,]+∞) ⊆ ℝ^*
10	3	adantr 482	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → 𝑀:𝒫 𝑂⟶(0[,]+∞))
11		simpr 486	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → 𝑒 ∈ 𝒫 𝑂)
12	11	elpwdifcl 31752	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → (𝑒 ∖ (𝐴 ∩ 𝐵)) ∈ 𝒫 𝑂)
13	10, 12	ffvelcdmd 7085	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵))) ∈ (0[,]+∞))
14	9, 13	sselid 3980	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵))) ∈ ℝ^*)
15	11	elpwincl1 31751	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → (𝑒 ∩ 𝐴) ∈ 𝒫 𝑂)
16	15	elpwdifcl 31752	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → ((𝑒 ∩ 𝐴) ∖ 𝐵) ∈ 𝒫 𝑂)
17	10, 16	ffvelcdmd 7085	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → (𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵)) ∈ (0[,]+∞))
18	9, 17	sselid 3980	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → (𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵)) ∈ ℝ^*)
19	11	elpwdifcl 31752	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → (𝑒 ∖ 𝐴) ∈ 𝒫 𝑂)
20	10, 19	ffvelcdmd 7085	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → (𝑀‘(𝑒 ∖ 𝐴)) ∈ (0[,]+∞))
21	9, 20	sselid 3980	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → (𝑀‘(𝑒 ∖ 𝐴)) ∈ ℝ^*)
22	18, 21	xaddcld 13277	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → ((𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵)) +_𝑒 (𝑀‘(𝑒 ∖ 𝐴))) ∈ ℝ^*)
23	11	elpwincl1 31751	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → (𝑒 ∩ (𝐴 ∩ 𝐵)) ∈ 𝒫 𝑂)
24	10, 23	ffvelcdmd 7085	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → (𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) ∈ (0[,]+∞))
25	9, 24	sselid 3980	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → (𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) ∈ ℝ^*)
26		indifundif 31750	. . . . . . . . . 10 ⊢ (((𝑒 ∩ 𝐴) ∖ 𝐵) ∪ (𝑒 ∖ 𝐴)) = (𝑒 ∖ (𝐴 ∩ 𝐵))
27	26	fveq2i 6892	. . . . . . . . 9 ⊢ (𝑀‘(((𝑒 ∩ 𝐴) ∖ 𝐵) ∪ (𝑒 ∖ 𝐴))) = (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵)))
28		inelcarsg.1	. . . . . . . . . . . . 13 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝒫 𝑂 ∧ 𝑏 ∈ 𝒫 𝑂) → (𝑀‘(𝑎 ∪ 𝑏)) ≤ ((𝑀‘𝑎) +_𝑒 (𝑀‘𝑏)))
29	28	3expb 1121	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ (𝑎 ∈ 𝒫 𝑂 ∧ 𝑏 ∈ 𝒫 𝑂)) → (𝑀‘(𝑎 ∪ 𝑏)) ≤ ((𝑀‘𝑎) +_𝑒 (𝑀‘𝑏)))
30	29	ralrimivva 3201	. . . . . . . . . . 11 ⊢ (𝜑 → ∀𝑎 ∈ 𝒫 𝑂∀𝑏 ∈ 𝒫 𝑂(𝑀‘(𝑎 ∪ 𝑏)) ≤ ((𝑀‘𝑎) +_𝑒 (𝑀‘𝑏)))
31	30	adantr 482	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → ∀𝑎 ∈ 𝒫 𝑂∀𝑏 ∈ 𝒫 𝑂(𝑀‘(𝑎 ∪ 𝑏)) ≤ ((𝑀‘𝑎) +_𝑒 (𝑀‘𝑏)))
32		uneq1 4156	. . . . . . . . . . . . . 14 ⊢ (𝑎 = ((𝑒 ∩ 𝐴) ∖ 𝐵) → (𝑎 ∪ 𝑏) = (((𝑒 ∩ 𝐴) ∖ 𝐵) ∪ 𝑏))
33	32	fveq2d 6893	. . . . . . . . . . . . 13 ⊢ (𝑎 = ((𝑒 ∩ 𝐴) ∖ 𝐵) → (𝑀‘(𝑎 ∪ 𝑏)) = (𝑀‘(((𝑒 ∩ 𝐴) ∖ 𝐵) ∪ 𝑏)))
34		fveq2 6889	. . . . . . . . . . . . . 14 ⊢ (𝑎 = ((𝑒 ∩ 𝐴) ∖ 𝐵) → (𝑀‘𝑎) = (𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵)))
35	34	oveq1d 7421	. . . . . . . . . . . . 13 ⊢ (𝑎 = ((𝑒 ∩ 𝐴) ∖ 𝐵) → ((𝑀‘𝑎) +_𝑒 (𝑀‘𝑏)) = ((𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵)) +_𝑒 (𝑀‘𝑏)))
36	33, 35	breq12d 5161	. . . . . . . . . . . 12 ⊢ (𝑎 = ((𝑒 ∩ 𝐴) ∖ 𝐵) → ((𝑀‘(𝑎 ∪ 𝑏)) ≤ ((𝑀‘𝑎) +_𝑒 (𝑀‘𝑏)) ↔ (𝑀‘(((𝑒 ∩ 𝐴) ∖ 𝐵) ∪ 𝑏)) ≤ ((𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵)) +_𝑒 (𝑀‘𝑏))))
37		uneq2 4157	. . . . . . . . . . . . . 14 ⊢ (𝑏 = (𝑒 ∖ 𝐴) → (((𝑒 ∩ 𝐴) ∖ 𝐵) ∪ 𝑏) = (((𝑒 ∩ 𝐴) ∖ 𝐵) ∪ (𝑒 ∖ 𝐴)))
38	37	fveq2d 6893	. . . . . . . . . . . . 13 ⊢ (𝑏 = (𝑒 ∖ 𝐴) → (𝑀‘(((𝑒 ∩ 𝐴) ∖ 𝐵) ∪ 𝑏)) = (𝑀‘(((𝑒 ∩ 𝐴) ∖ 𝐵) ∪ (𝑒 ∖ 𝐴))))
39		fveq2 6889	. . . . . . . . . . . . . 14 ⊢ (𝑏 = (𝑒 ∖ 𝐴) → (𝑀‘𝑏) = (𝑀‘(𝑒 ∖ 𝐴)))
40	39	oveq2d 7422	. . . . . . . . . . . . 13 ⊢ (𝑏 = (𝑒 ∖ 𝐴) → ((𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵)) +_𝑒 (𝑀‘𝑏)) = ((𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵)) +_𝑒 (𝑀‘(𝑒 ∖ 𝐴))))
41	38, 40	breq12d 5161	. . . . . . . . . . . 12 ⊢ (𝑏 = (𝑒 ∖ 𝐴) → ((𝑀‘(((𝑒 ∩ 𝐴) ∖ 𝐵) ∪ 𝑏)) ≤ ((𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵)) +_𝑒 (𝑀‘𝑏)) ↔ (𝑀‘(((𝑒 ∩ 𝐴) ∖ 𝐵) ∪ (𝑒 ∖ 𝐴))) ≤ ((𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵)) +_𝑒 (𝑀‘(𝑒 ∖ 𝐴)))))
42	36, 41	rspc2v 3622	. . . . . . . . . . 11 ⊢ ((((𝑒 ∩ 𝐴) ∖ 𝐵) ∈ 𝒫 𝑂 ∧ (𝑒 ∖ 𝐴) ∈ 𝒫 𝑂) → (∀𝑎 ∈ 𝒫 𝑂∀𝑏 ∈ 𝒫 𝑂(𝑀‘(𝑎 ∪ 𝑏)) ≤ ((𝑀‘𝑎) +_𝑒 (𝑀‘𝑏)) → (𝑀‘(((𝑒 ∩ 𝐴) ∖ 𝐵) ∪ (𝑒 ∖ 𝐴))) ≤ ((𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵)) +_𝑒 (𝑀‘(𝑒 ∖ 𝐴)))))
43	42	imp 408	. . . . . . . . . 10 ⊢ (((((𝑒 ∩ 𝐴) ∖ 𝐵) ∈ 𝒫 𝑂 ∧ (𝑒 ∖ 𝐴) ∈ 𝒫 𝑂) ∧ ∀𝑎 ∈ 𝒫 𝑂∀𝑏 ∈ 𝒫 𝑂(𝑀‘(𝑎 ∪ 𝑏)) ≤ ((𝑀‘𝑎) +_𝑒 (𝑀‘𝑏))) → (𝑀‘(((𝑒 ∩ 𝐴) ∖ 𝐵) ∪ (𝑒 ∖ 𝐴))) ≤ ((𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵)) +_𝑒 (𝑀‘(𝑒 ∖ 𝐴))))
44	16, 19, 31, 43	syl21anc 837	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → (𝑀‘(((𝑒 ∩ 𝐴) ∖ 𝐵) ∪ (𝑒 ∖ 𝐴))) ≤ ((𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵)) +_𝑒 (𝑀‘(𝑒 ∖ 𝐴))))
45	27, 44	eqbrtrrid 5184	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵))) ≤ ((𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵)) +_𝑒 (𝑀‘(𝑒 ∖ 𝐴))))
46		xleadd2a 13230	. . . . . . . 8 ⊢ ((((𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵))) ∈ ℝ^* ∧ ((𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵)) +_𝑒 (𝑀‘(𝑒 ∖ 𝐴))) ∈ ℝ^* ∧ (𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) ∈ ℝ^*) ∧ (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵))) ≤ ((𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵)) +_𝑒 (𝑀‘(𝑒 ∖ 𝐴)))) → ((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵)))) ≤ ((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 ((𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵)) +_𝑒 (𝑀‘(𝑒 ∖ 𝐴)))))
47	14, 22, 25, 45, 46	syl31anc 1374	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → ((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵)))) ≤ ((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 ((𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵)) +_𝑒 (𝑀‘(𝑒 ∖ 𝐴)))))
48		inelcarsg.2	. . . . . . . . . . . . 13 ⊢ (𝜑 → 𝐵 ∈ (toCaraSiga‘𝑀))
49	2, 3	elcarsg 33293	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝐵 ∈ (toCaraSiga‘𝑀) ↔ (𝐵 ⊆ 𝑂 ∧ ∀𝑓 ∈ 𝒫 𝑂((𝑀‘(𝑓 ∩ 𝐵)) +_𝑒 (𝑀‘(𝑓 ∖ 𝐵))) = (𝑀‘𝑓))))
50	48, 49	mpbid 231	. . . . . . . . . . . 12 ⊢ (𝜑 → (𝐵 ⊆ 𝑂 ∧ ∀𝑓 ∈ 𝒫 𝑂((𝑀‘(𝑓 ∩ 𝐵)) +_𝑒 (𝑀‘(𝑓 ∖ 𝐵))) = (𝑀‘𝑓)))
51	50	simprd 497	. . . . . . . . . . 11 ⊢ (𝜑 → ∀𝑓 ∈ 𝒫 𝑂((𝑀‘(𝑓 ∩ 𝐵)) +_𝑒 (𝑀‘(𝑓 ∖ 𝐵))) = (𝑀‘𝑓))
52	51	adantr 482	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → ∀𝑓 ∈ 𝒫 𝑂((𝑀‘(𝑓 ∩ 𝐵)) +_𝑒 (𝑀‘(𝑓 ∖ 𝐵))) = (𝑀‘𝑓))
53		ineq1 4205	. . . . . . . . . . . . . . 15 ⊢ (𝑓 = (𝑒 ∩ 𝐴) → (𝑓 ∩ 𝐵) = ((𝑒 ∩ 𝐴) ∩ 𝐵))
54	53	fveq2d 6893	. . . . . . . . . . . . . 14 ⊢ (𝑓 = (𝑒 ∩ 𝐴) → (𝑀‘(𝑓 ∩ 𝐵)) = (𝑀‘((𝑒 ∩ 𝐴) ∩ 𝐵)))
55		difeq1 4115	. . . . . . . . . . . . . . 15 ⊢ (𝑓 = (𝑒 ∩ 𝐴) → (𝑓 ∖ 𝐵) = ((𝑒 ∩ 𝐴) ∖ 𝐵))
56	55	fveq2d 6893	. . . . . . . . . . . . . 14 ⊢ (𝑓 = (𝑒 ∩ 𝐴) → (𝑀‘(𝑓 ∖ 𝐵)) = (𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵)))
57	54, 56	oveq12d 7424	. . . . . . . . . . . . 13 ⊢ (𝑓 = (𝑒 ∩ 𝐴) → ((𝑀‘(𝑓 ∩ 𝐵)) +_𝑒 (𝑀‘(𝑓 ∖ 𝐵))) = ((𝑀‘((𝑒 ∩ 𝐴) ∩ 𝐵)) +_𝑒 (𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵))))
58		fveq2 6889	. . . . . . . . . . . . 13 ⊢ (𝑓 = (𝑒 ∩ 𝐴) → (𝑀‘𝑓) = (𝑀‘(𝑒 ∩ 𝐴)))
59	57, 58	eqeq12d 2749	. . . . . . . . . . . 12 ⊢ (𝑓 = (𝑒 ∩ 𝐴) → (((𝑀‘(𝑓 ∩ 𝐵)) +_𝑒 (𝑀‘(𝑓 ∖ 𝐵))) = (𝑀‘𝑓) ↔ ((𝑀‘((𝑒 ∩ 𝐴) ∩ 𝐵)) +_𝑒 (𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵))) = (𝑀‘(𝑒 ∩ 𝐴))))
60	59	adantl 483	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) ∧ 𝑓 = (𝑒 ∩ 𝐴)) → (((𝑀‘(𝑓 ∩ 𝐵)) +_𝑒 (𝑀‘(𝑓 ∖ 𝐵))) = (𝑀‘𝑓) ↔ ((𝑀‘((𝑒 ∩ 𝐴) ∩ 𝐵)) +_𝑒 (𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵))) = (𝑀‘(𝑒 ∩ 𝐴))))
61	15, 60	rspcdv 3605	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → (∀𝑓 ∈ 𝒫 𝑂((𝑀‘(𝑓 ∩ 𝐵)) +_𝑒 (𝑀‘(𝑓 ∖ 𝐵))) = (𝑀‘𝑓) → ((𝑀‘((𝑒 ∩ 𝐴) ∩ 𝐵)) +_𝑒 (𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵))) = (𝑀‘(𝑒 ∩ 𝐴))))
62	52, 61	mpd 15	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → ((𝑀‘((𝑒 ∩ 𝐴) ∩ 𝐵)) +_𝑒 (𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵))) = (𝑀‘(𝑒 ∩ 𝐴)))
63	62	oveq1d 7421	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → (((𝑀‘((𝑒 ∩ 𝐴) ∩ 𝐵)) +_𝑒 (𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵))) +_𝑒 (𝑀‘(𝑒 ∖ 𝐴))) = ((𝑀‘(𝑒 ∩ 𝐴)) +_𝑒 (𝑀‘(𝑒 ∖ 𝐴))))
64	15	elpwincl1 31751	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → ((𝑒 ∩ 𝐴) ∩ 𝐵) ∈ 𝒫 𝑂)
65	10, 64	ffvelcdmd 7085	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → (𝑀‘((𝑒 ∩ 𝐴) ∩ 𝐵)) ∈ (0[,]+∞))
66		xrge0addass 32179	. . . . . . . . . 10 ⊢ (((𝑀‘((𝑒 ∩ 𝐴) ∩ 𝐵)) ∈ (0[,]+∞) ∧ (𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵)) ∈ (0[,]+∞) ∧ (𝑀‘(𝑒 ∖ 𝐴)) ∈ (0[,]+∞)) → (((𝑀‘((𝑒 ∩ 𝐴) ∩ 𝐵)) +_𝑒 (𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵))) +_𝑒 (𝑀‘(𝑒 ∖ 𝐴))) = ((𝑀‘((𝑒 ∩ 𝐴) ∩ 𝐵)) +_𝑒 ((𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵)) +_𝑒 (𝑀‘(𝑒 ∖ 𝐴)))))
67	65, 17, 20, 66	syl3anc 1372	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → (((𝑀‘((𝑒 ∩ 𝐴) ∩ 𝐵)) +_𝑒 (𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵))) +_𝑒 (𝑀‘(𝑒 ∖ 𝐴))) = ((𝑀‘((𝑒 ∩ 𝐴) ∩ 𝐵)) +_𝑒 ((𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵)) +_𝑒 (𝑀‘(𝑒 ∖ 𝐴)))))
68		inass 4219	. . . . . . . . . . 11 ⊢ ((𝑒 ∩ 𝐴) ∩ 𝐵) = (𝑒 ∩ (𝐴 ∩ 𝐵))
69	68	fveq2i 6892	. . . . . . . . . 10 ⊢ (𝑀‘((𝑒 ∩ 𝐴) ∩ 𝐵)) = (𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵)))
70	69	oveq1i 7416	. . . . . . . . 9 ⊢ ((𝑀‘((𝑒 ∩ 𝐴) ∩ 𝐵)) +_𝑒 ((𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵)) +_𝑒 (𝑀‘(𝑒 ∖ 𝐴)))) = ((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 ((𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵)) +_𝑒 (𝑀‘(𝑒 ∖ 𝐴))))
71	67, 70	eqtrdi 2789	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → (((𝑀‘((𝑒 ∩ 𝐴) ∩ 𝐵)) +_𝑒 (𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵))) +_𝑒 (𝑀‘(𝑒 ∖ 𝐴))) = ((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 ((𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵)) +_𝑒 (𝑀‘(𝑒 ∖ 𝐴)))))
72	5	simprd 497	. . . . . . . . 9 ⊢ (𝜑 → ∀𝑒 ∈ 𝒫 𝑂((𝑀‘(𝑒 ∩ 𝐴)) +_𝑒 (𝑀‘(𝑒 ∖ 𝐴))) = (𝑀‘𝑒))
73	72	r19.21bi 3249	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → ((𝑀‘(𝑒 ∩ 𝐴)) +_𝑒 (𝑀‘(𝑒 ∖ 𝐴))) = (𝑀‘𝑒))
74	63, 71, 73	3eqtr3d 2781	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → ((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 ((𝑀‘((𝑒 ∩ 𝐴) ∖ 𝐵)) +_𝑒 (𝑀‘(𝑒 ∖ 𝐴)))) = (𝑀‘𝑒))
75	47, 74	breqtrd 5174	. . . . . 6 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → ((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵)))) ≤ (𝑀‘𝑒))
76		inundif 4478	. . . . . . . 8 ⊢ ((𝑒 ∩ (𝐴 ∩ 𝐵)) ∪ (𝑒 ∖ (𝐴 ∩ 𝐵))) = 𝑒
77	76	fveq2i 6892	. . . . . . 7 ⊢ (𝑀‘((𝑒 ∩ (𝐴 ∩ 𝐵)) ∪ (𝑒 ∖ (𝐴 ∩ 𝐵)))) = (𝑀‘𝑒)
78		uneq1 4156	. . . . . . . . . . . 12 ⊢ (𝑎 = (𝑒 ∩ (𝐴 ∩ 𝐵)) → (𝑎 ∪ 𝑏) = ((𝑒 ∩ (𝐴 ∩ 𝐵)) ∪ 𝑏))
79	78	fveq2d 6893	. . . . . . . . . . 11 ⊢ (𝑎 = (𝑒 ∩ (𝐴 ∩ 𝐵)) → (𝑀‘(𝑎 ∪ 𝑏)) = (𝑀‘((𝑒 ∩ (𝐴 ∩ 𝐵)) ∪ 𝑏)))
80		fveq2 6889	. . . . . . . . . . . 12 ⊢ (𝑎 = (𝑒 ∩ (𝐴 ∩ 𝐵)) → (𝑀‘𝑎) = (𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))))
81	80	oveq1d 7421	. . . . . . . . . . 11 ⊢ (𝑎 = (𝑒 ∩ (𝐴 ∩ 𝐵)) → ((𝑀‘𝑎) +_𝑒 (𝑀‘𝑏)) = ((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 (𝑀‘𝑏)))
82	79, 81	breq12d 5161	. . . . . . . . . 10 ⊢ (𝑎 = (𝑒 ∩ (𝐴 ∩ 𝐵)) → ((𝑀‘(𝑎 ∪ 𝑏)) ≤ ((𝑀‘𝑎) +_𝑒 (𝑀‘𝑏)) ↔ (𝑀‘((𝑒 ∩ (𝐴 ∩ 𝐵)) ∪ 𝑏)) ≤ ((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 (𝑀‘𝑏))))
83		uneq2 4157	. . . . . . . . . . . 12 ⊢ (𝑏 = (𝑒 ∖ (𝐴 ∩ 𝐵)) → ((𝑒 ∩ (𝐴 ∩ 𝐵)) ∪ 𝑏) = ((𝑒 ∩ (𝐴 ∩ 𝐵)) ∪ (𝑒 ∖ (𝐴 ∩ 𝐵))))
84	83	fveq2d 6893	. . . . . . . . . . 11 ⊢ (𝑏 = (𝑒 ∖ (𝐴 ∩ 𝐵)) → (𝑀‘((𝑒 ∩ (𝐴 ∩ 𝐵)) ∪ 𝑏)) = (𝑀‘((𝑒 ∩ (𝐴 ∩ 𝐵)) ∪ (𝑒 ∖ (𝐴 ∩ 𝐵)))))
85		fveq2 6889	. . . . . . . . . . . 12 ⊢ (𝑏 = (𝑒 ∖ (𝐴 ∩ 𝐵)) → (𝑀‘𝑏) = (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵))))
86	85	oveq2d 7422	. . . . . . . . . . 11 ⊢ (𝑏 = (𝑒 ∖ (𝐴 ∩ 𝐵)) → ((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 (𝑀‘𝑏)) = ((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵)))))
87	84, 86	breq12d 5161	. . . . . . . . . 10 ⊢ (𝑏 = (𝑒 ∖ (𝐴 ∩ 𝐵)) → ((𝑀‘((𝑒 ∩ (𝐴 ∩ 𝐵)) ∪ 𝑏)) ≤ ((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 (𝑀‘𝑏)) ↔ (𝑀‘((𝑒 ∩ (𝐴 ∩ 𝐵)) ∪ (𝑒 ∖ (𝐴 ∩ 𝐵)))) ≤ ((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵))))))
88	82, 87	rspc2v 3622	. . . . . . . . 9 ⊢ (((𝑒 ∩ (𝐴 ∩ 𝐵)) ∈ 𝒫 𝑂 ∧ (𝑒 ∖ (𝐴 ∩ 𝐵)) ∈ 𝒫 𝑂) → (∀𝑎 ∈ 𝒫 𝑂∀𝑏 ∈ 𝒫 𝑂(𝑀‘(𝑎 ∪ 𝑏)) ≤ ((𝑀‘𝑎) +_𝑒 (𝑀‘𝑏)) → (𝑀‘((𝑒 ∩ (𝐴 ∩ 𝐵)) ∪ (𝑒 ∖ (𝐴 ∩ 𝐵)))) ≤ ((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵))))))
89	88	imp 408	. . . . . . . 8 ⊢ ((((𝑒 ∩ (𝐴 ∩ 𝐵)) ∈ 𝒫 𝑂 ∧ (𝑒 ∖ (𝐴 ∩ 𝐵)) ∈ 𝒫 𝑂) ∧ ∀𝑎 ∈ 𝒫 𝑂∀𝑏 ∈ 𝒫 𝑂(𝑀‘(𝑎 ∪ 𝑏)) ≤ ((𝑀‘𝑎) +_𝑒 (𝑀‘𝑏))) → (𝑀‘((𝑒 ∩ (𝐴 ∩ 𝐵)) ∪ (𝑒 ∖ (𝐴 ∩ 𝐵)))) ≤ ((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵)))))
90	23, 12, 31, 89	syl21anc 837	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → (𝑀‘((𝑒 ∩ (𝐴 ∩ 𝐵)) ∪ (𝑒 ∖ (𝐴 ∩ 𝐵)))) ≤ ((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵)))))
91	77, 90	eqbrtrrid 5184	. . . . . 6 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → (𝑀‘𝑒) ≤ ((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵)))))
92	75, 91	jca 513	. . . . 5 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → (((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵)))) ≤ (𝑀‘𝑒) ∧ (𝑀‘𝑒) ≤ ((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵))))))
93	25, 14	xaddcld 13277	. . . . . 6 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → ((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵)))) ∈ ℝ^*)
94	3	ffvelcdmda 7084	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → (𝑀‘𝑒) ∈ (0[,]+∞))
95	9, 94	sselid 3980	. . . . . 6 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → (𝑀‘𝑒) ∈ ℝ^*)
96		xrletri3 13130	. . . . . 6 ⊢ ((((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵)))) ∈ ℝ^* ∧ (𝑀‘𝑒) ∈ ℝ^*) → (((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵)))) = (𝑀‘𝑒) ↔ (((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵)))) ≤ (𝑀‘𝑒) ∧ (𝑀‘𝑒) ≤ ((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵)))))))
97	93, 95, 96	syl2anc 585	. . . . 5 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → (((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵)))) = (𝑀‘𝑒) ↔ (((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵)))) ≤ (𝑀‘𝑒) ∧ (𝑀‘𝑒) ≤ ((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵)))))))
98	92, 97	mpbird 257	. . . 4 ⊢ ((𝜑 ∧ 𝑒 ∈ 𝒫 𝑂) → ((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵)))) = (𝑀‘𝑒))
99	98	ralrimiva 3147	. . 3 ⊢ (𝜑 → ∀𝑒 ∈ 𝒫 𝑂((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵)))) = (𝑀‘𝑒))
100	8, 99	jca 513	. 2 ⊢ (𝜑 → ((𝐴 ∩ 𝐵) ⊆ 𝑂 ∧ ∀𝑒 ∈ 𝒫 𝑂((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵)))) = (𝑀‘𝑒)))
101	2, 3	elcarsg 33293	. 2 ⊢ (𝜑 → ((𝐴 ∩ 𝐵) ∈ (toCaraSiga‘𝑀) ↔ ((𝐴 ∩ 𝐵) ⊆ 𝑂 ∧ ∀𝑒 ∈ 𝒫 𝑂((𝑀‘(𝑒 ∩ (𝐴 ∩ 𝐵))) +_𝑒 (𝑀‘(𝑒 ∖ (𝐴 ∩ 𝐵)))) = (𝑀‘𝑒))))
102	100, 101	mpbird 257	1 ⊢ (𝜑 → (𝐴 ∩ 𝐵) ∈ (toCaraSiga‘𝑀))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 397 ∧ w3a 1088 = wceq 1542 ∈ wcel 2107 ∀wral 3062 ∖ cdif 3945 ∪ cun 3946 ∩ cin 3947 ⊆ wss 3948 𝒫 cpw 4602 class class class wbr 5148 ⟶wf 6537 ‘cfv 6541 (class class class)co 7406 0cc0 11107 +∞cpnf 11242 ℝ^*cxr 11244 ≤ cle 11246 +_𝑒 cxad 13087 [,]cicc 13324 toCaraSigaccarsg 33289

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2704 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7722 ax-cnex 11163 ax-resscn 11164 ax-1cn 11165 ax-icn 11166 ax-addcl 11167 ax-addrcl 11168 ax-mulcl 11169 ax-mulrcl 11170 ax-mulcom 11171 ax-addass 11172 ax-mulass 11173 ax-distr 11174 ax-i2m1 11175 ax-1ne0 11176 ax-1rid 11177 ax-rnegex 11178 ax-rrecex 11179 ax-cnre 11180 ax-pre-lttri 11181 ax-pre-lttrn 11182 ax-pre-ltadd 11183

This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2535 df-eu 2564 df-clab 2711 df-cleq 2725 df-clel 2811 df-nfc 2886 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-reu 3378 df-rab 3434 df-v 3477 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 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-id 5574 df-po 5588 df-so 5589 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-iota 6493 df-fun 6543 df-fn 6544 df-f 6545 df-f1 6546 df-fo 6547 df-f1o 6548 df-fv 6549 df-ov 7409 df-oprab 7410 df-mpo 7411 df-1st 7972 df-2nd 7973 df-er 8700 df-en 8937 df-dom 8938 df-sdom 8939 df-pnf 11247 df-mnf 11248 df-xr 11249 df-ltxr 11250 df-le 11251 df-xadd 13090 df-icc 13328 df-carsg 33290

This theorem is referenced by: unelcarsg 33300 difelcarsg2 33301

W3C validator