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Theorem probmeasb 33727

Description: Build a probability from a measure and a set with finite measure. (Contributed by Thierry Arnoux, 25-Dec-2016.)

**Assertion**
Ref	Expression
probmeasb	⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → (𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴))) ∈ Prob)

Distinct variable groups: 𝑥,𝐴 𝑥,𝑀 𝑥,𝑆

Proof of Theorem probmeasb Dummy variable 𝑦 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		measinb 33517	. . . . 5 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆) → (𝑦 ∈ 𝑆 ↦ (𝑀‘(𝑦 ∩ 𝐴))) ∈ (measures‘𝑆))
2		measdivcstALTV 33521	. . . . 5 ⊢ (((𝑦 ∈ 𝑆 ↦ (𝑀‘(𝑦 ∩ 𝐴))) ∈ (measures‘𝑆) ∧ (𝑀‘𝐴) ∈ ℝ⁺) → (𝑥 ∈ 𝑆 ↦ (((𝑦 ∈ 𝑆 ↦ (𝑀‘(𝑦 ∩ 𝐴)))‘𝑥) /_𝑒 (𝑀‘𝐴))) ∈ (measures‘𝑆))
3	1, 2	stoic3 1776	. . . 4 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → (𝑥 ∈ 𝑆 ↦ (((𝑦 ∈ 𝑆 ↦ (𝑀‘(𝑦 ∩ 𝐴)))‘𝑥) /_𝑒 (𝑀‘𝐴))) ∈ (measures‘𝑆))
4		eqidd 2731	. . . . . . . 8 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → (𝑦 ∈ 𝑆 ↦ (𝑀‘(𝑦 ∩ 𝐴))) = (𝑦 ∈ 𝑆 ↦ (𝑀‘(𝑦 ∩ 𝐴))))
5		simpr 483	. . . . . . . . . 10 ⊢ ((((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) ∧ 𝑦 = 𝑥) → 𝑦 = 𝑥)
6	5	ineq1d 4210	. . . . . . . . 9 ⊢ ((((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) ∧ 𝑦 = 𝑥) → (𝑦 ∩ 𝐴) = (𝑥 ∩ 𝐴))
7	6	fveq2d 6894	. . . . . . . 8 ⊢ ((((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) ∧ 𝑦 = 𝑥) → (𝑀‘(𝑦 ∩ 𝐴)) = (𝑀‘(𝑥 ∩ 𝐴)))
8		simpr 483	. . . . . . . 8 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → 𝑥 ∈ 𝑆)
9		simp1 1134	. . . . . . . . . 10 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → 𝑀 ∈ (measures‘𝑆))
10	9	adantr 479	. . . . . . . . 9 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → 𝑀 ∈ (measures‘𝑆))
11		measbase 33493	. . . . . . . . . . 11 ⊢ (𝑀 ∈ (measures‘𝑆) → 𝑆 ∈ ∪ ran sigAlgebra)
12	10, 11	syl 17	. . . . . . . . . 10 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → 𝑆 ∈ ∪ ran sigAlgebra)
13		simp2 1135	. . . . . . . . . . 11 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → 𝐴 ∈ 𝑆)
14	13	adantr 479	. . . . . . . . . 10 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → 𝐴 ∈ 𝑆)
15		inelsiga 33431	. . . . . . . . . 10 ⊢ ((𝑆 ∈ ∪ ran sigAlgebra ∧ 𝑥 ∈ 𝑆 ∧ 𝐴 ∈ 𝑆) → (𝑥 ∩ 𝐴) ∈ 𝑆)
16	12, 8, 14, 15	syl3anc 1369	. . . . . . . . 9 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → (𝑥 ∩ 𝐴) ∈ 𝑆)
17		measvxrge0 33501	. . . . . . . . 9 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ (𝑥 ∩ 𝐴) ∈ 𝑆) → (𝑀‘(𝑥 ∩ 𝐴)) ∈ (0[,]+∞))
18	10, 16, 17	syl2anc 582	. . . . . . . 8 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → (𝑀‘(𝑥 ∩ 𝐴)) ∈ (0[,]+∞))
19	4, 7, 8, 18	fvmptd 7004	. . . . . . 7 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → ((𝑦 ∈ 𝑆 ↦ (𝑀‘(𝑦 ∩ 𝐴)))‘𝑥) = (𝑀‘(𝑥 ∩ 𝐴)))
20	19	oveq1d 7426	. . . . . 6 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → (((𝑦 ∈ 𝑆 ↦ (𝑀‘(𝑦 ∩ 𝐴)))‘𝑥) /_𝑒 (𝑀‘𝐴)) = ((𝑀‘(𝑥 ∩ 𝐴)) /_𝑒 (𝑀‘𝐴)))
21		iccssxr 13411	. . . . . . . . 9 ⊢ (0[,]+∞) ⊆ ℝ^*
22	21, 18	sselid 3979	. . . . . . . 8 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → (𝑀‘(𝑥 ∩ 𝐴)) ∈ ℝ^*)
23		simp3 1136	. . . . . . . . . 10 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → (𝑀‘𝐴) ∈ ℝ⁺)
24	23	adantr 479	. . . . . . . . 9 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → (𝑀‘𝐴) ∈ ℝ⁺)
25	24	rpred 13020	. . . . . . . 8 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → (𝑀‘𝐴) ∈ ℝ)
26		0xr 11265	. . . . . . . . . 10 ⊢ 0 ∈ ℝ^*
27		pnfxr 11272	. . . . . . . . . 10 ⊢ +∞ ∈ ℝ^*
28		iccgelb 13384	. . . . . . . . . 10 ⊢ ((0 ∈ ℝ^* ∧ +∞ ∈ ℝ^* ∧ (𝑀‘(𝑥 ∩ 𝐴)) ∈ (0[,]+∞)) → 0 ≤ (𝑀‘(𝑥 ∩ 𝐴)))
29	26, 27, 28	mp3an12 1449	. . . . . . . . 9 ⊢ ((𝑀‘(𝑥 ∩ 𝐴)) ∈ (0[,]+∞) → 0 ≤ (𝑀‘(𝑥 ∩ 𝐴)))
30	18, 29	syl 17	. . . . . . . 8 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → 0 ≤ (𝑀‘(𝑥 ∩ 𝐴)))
31		inss2 4228	. . . . . . . . . 10 ⊢ (𝑥 ∩ 𝐴) ⊆ 𝐴
32	31	a1i 11	. . . . . . . . 9 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → (𝑥 ∩ 𝐴) ⊆ 𝐴)
33	10, 16, 14, 32	measssd 33511	. . . . . . . 8 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → (𝑀‘(𝑥 ∩ 𝐴)) ≤ (𝑀‘𝐴))
34		xrrege0 13157	. . . . . . . 8 ⊢ ((((𝑀‘(𝑥 ∩ 𝐴)) ∈ ℝ^* ∧ (𝑀‘𝐴) ∈ ℝ) ∧ (0 ≤ (𝑀‘(𝑥 ∩ 𝐴)) ∧ (𝑀‘(𝑥 ∩ 𝐴)) ≤ (𝑀‘𝐴))) → (𝑀‘(𝑥 ∩ 𝐴)) ∈ ℝ)
35	22, 25, 30, 33, 34	syl22anc 835	. . . . . . 7 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → (𝑀‘(𝑥 ∩ 𝐴)) ∈ ℝ)
36	24	rpne0d 13025	. . . . . . 7 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → (𝑀‘𝐴) ≠ 0)
37		rexdiv 32359	. . . . . . 7 ⊢ (((𝑀‘(𝑥 ∩ 𝐴)) ∈ ℝ ∧ (𝑀‘𝐴) ∈ ℝ ∧ (𝑀‘𝐴) ≠ 0) → ((𝑀‘(𝑥 ∩ 𝐴)) /_𝑒 (𝑀‘𝐴)) = ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴)))
38	35, 25, 36, 37	syl3anc 1369	. . . . . 6 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → ((𝑀‘(𝑥 ∩ 𝐴)) /_𝑒 (𝑀‘𝐴)) = ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴)))
39	20, 38	eqtrd 2770	. . . . 5 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → (((𝑦 ∈ 𝑆 ↦ (𝑀‘(𝑦 ∩ 𝐴)))‘𝑥) /_𝑒 (𝑀‘𝐴)) = ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴)))
40	39	mpteq2dva 5247	. . . 4 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → (𝑥 ∈ 𝑆 ↦ (((𝑦 ∈ 𝑆 ↦ (𝑀‘(𝑦 ∩ 𝐴)))‘𝑥) /_𝑒 (𝑀‘𝐴))) = (𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴))))
41	35, 24	rerpdivcld 13051	. . . . . . . 8 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴)) ∈ ℝ)
42	41	ralrimiva 3144	. . . . . . 7 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → ∀𝑥 ∈ 𝑆 ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴)) ∈ ℝ)
43		dmmptg 6240	. . . . . . 7 ⊢ (∀𝑥 ∈ 𝑆 ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴)) ∈ ℝ → dom (𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴))) = 𝑆)
44	42, 43	syl 17	. . . . . 6 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → dom (𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴))) = 𝑆)
45	44	fveq2d 6894	. . . . 5 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → (measures‘dom (𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴)))) = (measures‘𝑆))
46	45	eqcomd 2736	. . . 4 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → (measures‘𝑆) = (measures‘dom (𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴)))))
47	3, 40, 46	3eltr3d 2845	. . 3 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → (𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴))) ∈ (measures‘dom (𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴)))))
48		measbasedom 33498	. . 3 ⊢ ((𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴))) ∈ ∪ ran measures ↔ (𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴))) ∈ (measures‘dom (𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴)))))
49	47, 48	sylibr 233	. 2 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → (𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴))) ∈ ∪ ran measures)
50	44	unieqd 4921	. . . 4 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → ∪ dom (𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴))) = ∪ 𝑆)
51	50	fveq2d 6894	. . 3 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → ((𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴)))‘∪ dom (𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴)))) = ((𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴)))‘∪ 𝑆))
52		eqidd 2731	. . . 4 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → (𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴))) = (𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴))))
53	23	adantr 479	. . . . . 6 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 = ∪ 𝑆) → (𝑀‘𝐴) ∈ ℝ⁺)
54	53	rpcnd 13022	. . . . 5 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 = ∪ 𝑆) → (𝑀‘𝐴) ∈ ℂ)
55	23	rpne0d 13025	. . . . . 6 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → (𝑀‘𝐴) ≠ 0)
56	55	adantr 479	. . . . 5 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 = ∪ 𝑆) → (𝑀‘𝐴) ≠ 0)
57		simpr 483	. . . . . . . 8 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 = ∪ 𝑆) → 𝑥 = ∪ 𝑆)
58	57	ineq1d 4210	. . . . . . 7 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 = ∪ 𝑆) → (𝑥 ∩ 𝐴) = (∪ 𝑆 ∩ 𝐴))
59		incom 4200	. . . . . . . . . 10 ⊢ (∪ 𝑆 ∩ 𝐴) = (𝐴 ∩ ∪ 𝑆)
60		elssuni 4940	. . . . . . . . . . 11 ⊢ (𝐴 ∈ 𝑆 → 𝐴 ⊆ ∪ 𝑆)
61		df-ss 3964	. . . . . . . . . . 11 ⊢ (𝐴 ⊆ ∪ 𝑆 ↔ (𝐴 ∩ ∪ 𝑆) = 𝐴)
62	60, 61	sylib 217	. . . . . . . . . 10 ⊢ (𝐴 ∈ 𝑆 → (𝐴 ∩ ∪ 𝑆) = 𝐴)
63	59, 62	eqtrid 2782	. . . . . . . . 9 ⊢ (𝐴 ∈ 𝑆 → (∪ 𝑆 ∩ 𝐴) = 𝐴)
64	13, 63	syl 17	. . . . . . . 8 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → (∪ 𝑆 ∩ 𝐴) = 𝐴)
65	64	adantr 479	. . . . . . 7 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 = ∪ 𝑆) → (∪ 𝑆 ∩ 𝐴) = 𝐴)
66	58, 65	eqtrd 2770	. . . . . 6 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 = ∪ 𝑆) → (𝑥 ∩ 𝐴) = 𝐴)
67	66	fveq2d 6894	. . . . 5 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 = ∪ 𝑆) → (𝑀‘(𝑥 ∩ 𝐴)) = (𝑀‘𝐴))
68	54, 56, 67	diveq1bd 12042	. . . 4 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 = ∪ 𝑆) → ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴)) = 1)
69		sgon 33420	. . . . 5 ⊢ (𝑆 ∈ ∪ ran sigAlgebra → 𝑆 ∈ (sigAlgebra‘∪ 𝑆))
70		baselsiga 33411	. . . . 5 ⊢ (𝑆 ∈ (sigAlgebra‘∪ 𝑆) → ∪ 𝑆 ∈ 𝑆)
71	9, 11, 69, 70	4syl 19	. . . 4 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → ∪ 𝑆 ∈ 𝑆)
72		1red 11219	. . . 4 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → 1 ∈ ℝ)
73	52, 68, 71, 72	fvmptd 7004	. . 3 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → ((𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴)))‘∪ 𝑆) = 1)
74	51, 73	eqtrd 2770	. 2 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → ((𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴)))‘∪ dom (𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴)))) = 1)
75		elprob 33706	. 2 ⊢ ((𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴))) ∈ Prob ↔ ((𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴))) ∈ ∪ ran measures ∧ ((𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴)))‘∪ dom (𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴)))) = 1))
76	49, 74, 75	sylanbrc 581	1 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → (𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴))) ∈ Prob)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 394 ∧ w3a 1085 = wceq 1539 ∈ wcel 2104 ≠ wne 2938 ∀wral 3059 ∩ cin 3946 ⊆ wss 3947 ∪ cuni 4907 class class class wbr 5147 ↦ cmpt 5230 dom cdm 5675 ran crn 5676 ‘cfv 6542 (class class class)co 7411 ℝcr 11111 0cc0 11112 1c1 11113 +∞cpnf 11249 ℝ^*cxr 11251 ≤ cle 11253 / cdiv 11875 ℝ⁺crp 12978 [,]cicc 13331 /_𝑒 cxdiv 32350 sigAlgebracsiga 33404 measurescmeas 33491 Probcprb 33704

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 1911 ax-6 1969 ax-7 2009 ax-8 2106 ax-9 2114 ax-10 2135 ax-11 2152 ax-12 2169 ax-ext 2701 ax-rep 5284 ax-sep 5298 ax-nul 5305 ax-pow 5362 ax-pr 5426 ax-un 7727 ax-inf2 9638 ax-ac2 10460 ax-cnex 11168 ax-resscn 11169 ax-1cn 11170 ax-icn 11171 ax-addcl 11172 ax-addrcl 11173 ax-mulcl 11174 ax-mulrcl 11175 ax-mulcom 11176 ax-addass 11177 ax-mulass 11178 ax-distr 11179 ax-i2m1 11180 ax-1ne0 11181 ax-1rid 11182 ax-rnegex 11183 ax-rrecex 11184 ax-cnre 11185 ax-pre-lttri 11186 ax-pre-lttrn 11187 ax-pre-ltadd 11188 ax-pre-mulgt0 11189 ax-pre-sup 11190 ax-addf 11191 ax-mulf 11192

This theorem depends on definitions: df-bi 206 df-an 395 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2532 df-eu 2561 df-clab 2708 df-cleq 2722 df-clel 2808 df-nfc 2883 df-ne 2939 df-nel 3045 df-ral 3060 df-rex 3069 df-rmo 3374 df-reu 3375 df-rab 3431 df-v 3474 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-tp 4632 df-op 4634 df-uni 4908 df-int 4950 df-iun 4998 df-iin 4999 df-disj 5113 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-se 5631 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 6299 df-ord 6366 df-on 6367 df-lim 6368 df-suc 6369 df-iota 6494 df-fun 6544 df-fn 6545 df-f 6546 df-f1 6547 df-fo 6548 df-f1o 6549 df-fv 6550 df-isom 6551 df-riota 7367 df-ov 7414 df-oprab 7415 df-mpo 7416 df-of 7672 df-om 7858 df-1st 7977 df-2nd 7978 df-supp 8149 df-frecs 8268 df-wrecs 8299 df-recs 8373 df-rdg 8412 df-1o 8468 df-2o 8469 df-er 8705 df-map 8824 df-pm 8825 df-ixp 8894 df-en 8942 df-dom 8943 df-sdom 8944 df-fin 8945 df-fsupp 9364 df-fi 9408 df-sup 9439 df-inf 9440 df-oi 9507 df-dju 9898 df-card 9936 df-acn 9939 df-ac 10113 df-pnf 11254 df-mnf 11255 df-xr 11256 df-ltxr 11257 df-le 11258 df-sub 11450 df-neg 11451 df-div 11876 df-nn 12217 df-2 12279 df-3 12280 df-4 12281 df-5 12282 df-6 12283 df-7 12284 df-8 12285 df-9 12286 df-n0 12477 df-z 12563 df-dec 12682 df-uz 12827 df-q 12937 df-rp 12979 df-xneg 13096 df-xadd 13097 df-xmul 13098 df-ioo 13332 df-ioc 13333 df-ico 13334 df-icc 13335 df-fz 13489 df-fzo 13632 df-fl 13761 df-mod 13839 df-seq 13971 df-exp 14032 df-fac 14238 df-bc 14267 df-hash 14295 df-shft 15018 df-cj 15050 df-re 15051 df-im 15052 df-sqrt 15186 df-abs 15187 df-limsup 15419 df-clim 15436 df-rlim 15437 df-sum 15637 df-ef 16015 df-sin 16017 df-cos 16018 df-pi 16020 df-struct 17084 df-sets 17101 df-slot 17119 df-ndx 17131 df-base 17149 df-ress 17178 df-plusg 17214 df-mulr 17215 df-starv 17216 df-sca 17217 df-vsca 17218 df-ip 17219 df-tset 17220 df-ple 17221 df-ds 17223 df-unif 17224 df-hom 17225 df-cco 17226 df-rest 17372 df-topn 17373 df-0g 17391 df-gsum 17392 df-topgen 17393 df-pt 17394 df-prds 17397 df-ordt 17451 df-xrs 17452 df-qtop 17457 df-imas 17458 df-xps 17460 df-mre 17534 df-mrc 17535 df-acs 17537 df-ps 18523 df-tsr 18524 df-plusf 18564 df-mgm 18565 df-sgrp 18644 df-mnd 18660 df-mhm 18705 df-submnd 18706 df-grp 18858 df-minusg 18859 df-sbg 18860 df-mulg 18987 df-subg 19039 df-cntz 19222 df-cmn 19691 df-abl 19692 df-mgp 20029 df-rng 20047 df-ur 20076 df-ring 20129 df-cring 20130 df-subrng 20434 df-subrg 20459 df-abv 20568 df-lmod 20616 df-scaf 20617 df-sra 20930 df-rgmod 20931 df-psmet 21136 df-xmet 21137 df-met 21138 df-bl 21139 df-mopn 21140 df-fbas 21141 df-fg 21142 df-cnfld 21145 df-top 22616 df-topon 22633 df-topsp 22655 df-bases 22669 df-cld 22743 df-ntr 22744 df-cls 22745 df-nei 22822 df-lp 22860 df-perf 22861 df-cn 22951 df-cnp 22952 df-haus 23039 df-tx 23286 df-hmeo 23479 df-fil 23570 df-fm 23662 df-flim 23663 df-flf 23664 df-tmd 23796 df-tgp 23797 df-tsms 23851 df-trg 23884 df-xms 24046 df-ms 24047 df-tms 24048 df-nm 24311 df-ngp 24312 df-nrg 24314 df-nlm 24315 df-ii 24617 df-cncf 24618 df-limc 25615 df-dv 25616 df-log 26301 df-xdiv 32351 df-esum 33324 df-siga 33405 df-meas 33492 df-prob 33705

This theorem is referenced by: cndprobprob 33735

W3C validator