probmeasb - Mathbox for Thierry Arnoux

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Theorem probmeasb 33429

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 33219	. . . . 5 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆) → (𝑦 ∈ 𝑆 ↦ (𝑀‘(𝑦 ∩ 𝐴))) ∈ (measures‘𝑆))
2		measdivcstALTV 33223	. . . . 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 1779	. . . 4 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → (𝑥 ∈ 𝑆 ↦ (((𝑦 ∈ 𝑆 ↦ (𝑀‘(𝑦 ∩ 𝐴)))‘𝑥) /_𝑒 (𝑀‘𝐴))) ∈ (measures‘𝑆))
4		eqidd 2734	. . . . . . . 8 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → (𝑦 ∈ 𝑆 ↦ (𝑀‘(𝑦 ∩ 𝐴))) = (𝑦 ∈ 𝑆 ↦ (𝑀‘(𝑦 ∩ 𝐴))))
5		simpr 486	. . . . . . . . . 10 ⊢ ((((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) ∧ 𝑦 = 𝑥) → 𝑦 = 𝑥)
6	5	ineq1d 4212	. . . . . . . . 9 ⊢ ((((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) ∧ 𝑦 = 𝑥) → (𝑦 ∩ 𝐴) = (𝑥 ∩ 𝐴))
7	6	fveq2d 6896	. . . . . . . 8 ⊢ ((((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) ∧ 𝑦 = 𝑥) → (𝑀‘(𝑦 ∩ 𝐴)) = (𝑀‘(𝑥 ∩ 𝐴)))
8		simpr 486	. . . . . . . 8 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → 𝑥 ∈ 𝑆)
9		simp1 1137	. . . . . . . . . 10 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → 𝑀 ∈ (measures‘𝑆))
10	9	adantr 482	. . . . . . . . 9 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → 𝑀 ∈ (measures‘𝑆))
11		measbase 33195	. . . . . . . . . . 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 1138	. . . . . . . . . . 11 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → 𝐴 ∈ 𝑆)
14	13	adantr 482	. . . . . . . . . 10 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → 𝐴 ∈ 𝑆)
15		inelsiga 33133	. . . . . . . . . 10 ⊢ ((𝑆 ∈ ∪ ran sigAlgebra ∧ 𝑥 ∈ 𝑆 ∧ 𝐴 ∈ 𝑆) → (𝑥 ∩ 𝐴) ∈ 𝑆)
16	12, 8, 14, 15	syl3anc 1372	. . . . . . . . 9 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → (𝑥 ∩ 𝐴) ∈ 𝑆)
17		measvxrge0 33203	. . . . . . . . 9 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ (𝑥 ∩ 𝐴) ∈ 𝑆) → (𝑀‘(𝑥 ∩ 𝐴)) ∈ (0[,]+∞))
18	10, 16, 17	syl2anc 585	. . . . . . . 8 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → (𝑀‘(𝑥 ∩ 𝐴)) ∈ (0[,]+∞))
19	4, 7, 8, 18	fvmptd 7006	. . . . . . 7 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → ((𝑦 ∈ 𝑆 ↦ (𝑀‘(𝑦 ∩ 𝐴)))‘𝑥) = (𝑀‘(𝑥 ∩ 𝐴)))
20	19	oveq1d 7424	. . . . . 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 13407	. . . . . . . . 9 ⊢ (0[,]+∞) ⊆ ℝ^*
22	21, 18	sselid 3981	. . . . . . . 8 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → (𝑀‘(𝑥 ∩ 𝐴)) ∈ ℝ^*)
23		simp3 1139	. . . . . . . . . 10 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → (𝑀‘𝐴) ∈ ℝ⁺)
24	23	adantr 482	. . . . . . . . 9 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → (𝑀‘𝐴) ∈ ℝ⁺)
25	24	rpred 13016	. . . . . . . 8 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → (𝑀‘𝐴) ∈ ℝ)
26		0xr 11261	. . . . . . . . . 10 ⊢ 0 ∈ ℝ^*
27		pnfxr 11268	. . . . . . . . . 10 ⊢ +∞ ∈ ℝ^*
28		iccgelb 13380	. . . . . . . . . 10 ⊢ ((0 ∈ ℝ^* ∧ +∞ ∈ ℝ^* ∧ (𝑀‘(𝑥 ∩ 𝐴)) ∈ (0[,]+∞)) → 0 ≤ (𝑀‘(𝑥 ∩ 𝐴)))
29	26, 27, 28	mp3an12 1452	. . . . . . . . 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 4230	. . . . . . . . . 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 33213	. . . . . . . 8 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → (𝑀‘(𝑥 ∩ 𝐴)) ≤ (𝑀‘𝐴))
34		xrrege0 13153	. . . . . . . 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 838	. . . . . . 7 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → (𝑀‘(𝑥 ∩ 𝐴)) ∈ ℝ)
36	24	rpne0d 13021	. . . . . . 7 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → (𝑀‘𝐴) ≠ 0)
37		rexdiv 32092	. . . . . . 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 1372	. . . . . 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 2773	. . . . 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 5249	. . . 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 13047	. . . . . . . 8 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 ∈ 𝑆) → ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴)) ∈ ℝ)
42	41	ralrimiva 3147	. . . . . . 7 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → ∀𝑥 ∈ 𝑆 ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴)) ∈ ℝ)
43		dmmptg 6242	. . . . . . 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 6896	. . . . 5 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → (measures‘dom (𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴)))) = (measures‘𝑆))
46	45	eqcomd 2739	. . . 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 2848	. . 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 33200	. . 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 4923	. . . 4 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → ∪ dom (𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴))) = ∪ 𝑆)
51	50	fveq2d 6896	. . 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 2734	. . . 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 482	. . . . . 6 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 = ∪ 𝑆) → (𝑀‘𝐴) ∈ ℝ⁺)
54	53	rpcnd 13018	. . . . 5 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 = ∪ 𝑆) → (𝑀‘𝐴) ∈ ℂ)
55	23	rpne0d 13021	. . . . . 6 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → (𝑀‘𝐴) ≠ 0)
56	55	adantr 482	. . . . 5 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 = ∪ 𝑆) → (𝑀‘𝐴) ≠ 0)
57		simpr 486	. . . . . . . 8 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 = ∪ 𝑆) → 𝑥 = ∪ 𝑆)
58	57	ineq1d 4212	. . . . . . 7 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 = ∪ 𝑆) → (𝑥 ∩ 𝐴) = (∪ 𝑆 ∩ 𝐴))
59		incom 4202	. . . . . . . . . 10 ⊢ (∪ 𝑆 ∩ 𝐴) = (𝐴 ∩ ∪ 𝑆)
60		elssuni 4942	. . . . . . . . . . 11 ⊢ (𝐴 ∈ 𝑆 → 𝐴 ⊆ ∪ 𝑆)
61		df-ss 3966	. . . . . . . . . . 11 ⊢ (𝐴 ⊆ ∪ 𝑆 ↔ (𝐴 ∩ ∪ 𝑆) = 𝐴)
62	60, 61	sylib 217	. . . . . . . . . 10 ⊢ (𝐴 ∈ 𝑆 → (𝐴 ∩ ∪ 𝑆) = 𝐴)
63	59, 62	eqtrid 2785	. . . . . . . . 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 482	. . . . . . 7 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 = ∪ 𝑆) → (∪ 𝑆 ∩ 𝐴) = 𝐴)
66	58, 65	eqtrd 2773	. . . . . 6 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 = ∪ 𝑆) → (𝑥 ∩ 𝐴) = 𝐴)
67	66	fveq2d 6896	. . . . 5 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 = ∪ 𝑆) → (𝑀‘(𝑥 ∩ 𝐴)) = (𝑀‘𝐴))
68	54, 56, 67	diveq1bd 12038	. . . 4 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) ∧ 𝑥 = ∪ 𝑆) → ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴)) = 1)
69		sgon 33122	. . . . 5 ⊢ (𝑆 ∈ ∪ ran sigAlgebra → 𝑆 ∈ (sigAlgebra‘∪ 𝑆))
70		baselsiga 33113	. . . . 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 11215	. . . 4 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → 1 ∈ ℝ)
73	52, 68, 71, 72	fvmptd 7006	. . 3 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ 𝑆 ∧ (𝑀‘𝐴) ∈ ℝ⁺) → ((𝑥 ∈ 𝑆 ↦ ((𝑀‘(𝑥 ∩ 𝐴)) / (𝑀‘𝐴)))‘∪ 𝑆) = 1)
74	51, 73	eqtrd 2773	. 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 33408	. 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 584	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 397 ∧ w3a 1088 = wceq 1542 ∈ wcel 2107 ≠ wne 2941 ∀wral 3062 ∩ cin 3948 ⊆ wss 3949 ∪ cuni 4909 class class class wbr 5149 ↦ cmpt 5232 dom cdm 5677 ran crn 5678 ‘cfv 6544 (class class class)co 7409 ℝcr 11109 0cc0 11110 1c1 11111 +∞cpnf 11245 ℝ^*cxr 11247 ≤ cle 11249 / cdiv 11871 ℝ⁺crp 12974 [,]cicc 13327 /_𝑒 cxdiv 32083 sigAlgebracsiga 33106 measurescmeas 33193 Probcprb 33406

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 5286 ax-sep 5300 ax-nul 5307 ax-pow 5364 ax-pr 5428 ax-un 7725 ax-inf2 9636 ax-ac2 10458 ax-cnex 11166 ax-resscn 11167 ax-1cn 11168 ax-icn 11169 ax-addcl 11170 ax-addrcl 11171 ax-mulcl 11172 ax-mulrcl 11173 ax-mulcom 11174 ax-addass 11175 ax-mulass 11176 ax-distr 11177 ax-i2m1 11178 ax-1ne0 11179 ax-1rid 11180 ax-rnegex 11181 ax-rrecex 11182 ax-cnre 11183 ax-pre-lttri 11184 ax-pre-lttrn 11185 ax-pre-ltadd 11186 ax-pre-mulgt0 11187 ax-pre-sup 11188 ax-addf 11189 ax-mulf 11190

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-rmo 3377 df-reu 3378 df-rab 3434 df-v 3477 df-sbc 3779 df-csb 3895 df-dif 3952 df-un 3954 df-in 3956 df-ss 3966 df-pss 3968 df-nul 4324 df-if 4530 df-pw 4605 df-sn 4630 df-pr 4632 df-tp 4634 df-op 4636 df-uni 4910 df-int 4952 df-iun 5000 df-iin 5001 df-disj 5115 df-br 5150 df-opab 5212 df-mpt 5233 df-tr 5267 df-id 5575 df-eprel 5581 df-po 5589 df-so 5590 df-fr 5632 df-se 5633 df-we 5634 df-xp 5683 df-rel 5684 df-cnv 5685 df-co 5686 df-dm 5687 df-rn 5688 df-res 5689 df-ima 5690 df-pred 6301 df-ord 6368 df-on 6369 df-lim 6370 df-suc 6371 df-iota 6496 df-fun 6546 df-fn 6547 df-f 6548 df-f1 6549 df-fo 6550 df-f1o 6551 df-fv 6552 df-isom 6553 df-riota 7365 df-ov 7412 df-oprab 7413 df-mpo 7414 df-of 7670 df-om 7856 df-1st 7975 df-2nd 7976 df-supp 8147 df-frecs 8266 df-wrecs 8297 df-recs 8371 df-rdg 8410 df-1o 8466 df-2o 8467 df-er 8703 df-map 8822 df-pm 8823 df-ixp 8892 df-en 8940 df-dom 8941 df-sdom 8942 df-fin 8943 df-fsupp 9362 df-fi 9406 df-sup 9437 df-inf 9438 df-oi 9505 df-dju 9896 df-card 9934 df-acn 9937 df-ac 10111 df-pnf 11250 df-mnf 11251 df-xr 11252 df-ltxr 11253 df-le 11254 df-sub 11446 df-neg 11447 df-div 11872 df-nn 12213 df-2 12275 df-3 12276 df-4 12277 df-5 12278 df-6 12279 df-7 12280 df-8 12281 df-9 12282 df-n0 12473 df-z 12559 df-dec 12678 df-uz 12823 df-q 12933 df-rp 12975 df-xneg 13092 df-xadd 13093 df-xmul 13094 df-ioo 13328 df-ioc 13329 df-ico 13330 df-icc 13331 df-fz 13485 df-fzo 13628 df-fl 13757 df-mod 13835 df-seq 13967 df-exp 14028 df-fac 14234 df-bc 14263 df-hash 14291 df-shft 15014 df-cj 15046 df-re 15047 df-im 15048 df-sqrt 15182 df-abs 15183 df-limsup 15415 df-clim 15432 df-rlim 15433 df-sum 15633 df-ef 16011 df-sin 16013 df-cos 16014 df-pi 16016 df-struct 17080 df-sets 17097 df-slot 17115 df-ndx 17127 df-base 17145 df-ress 17174 df-plusg 17210 df-mulr 17211 df-starv 17212 df-sca 17213 df-vsca 17214 df-ip 17215 df-tset 17216 df-ple 17217 df-ds 17219 df-unif 17220 df-hom 17221 df-cco 17222 df-rest 17368 df-topn 17369 df-0g 17387 df-gsum 17388 df-topgen 17389 df-pt 17390 df-prds 17393 df-ordt 17447 df-xrs 17448 df-qtop 17453 df-imas 17454 df-xps 17456 df-mre 17530 df-mrc 17531 df-acs 17533 df-ps 18519 df-tsr 18520 df-plusf 18560 df-mgm 18561 df-sgrp 18610 df-mnd 18626 df-mhm 18671 df-submnd 18672 df-grp 18822 df-minusg 18823 df-sbg 18824 df-mulg 18951 df-subg 19003 df-cntz 19181 df-cmn 19650 df-abl 19651 df-mgp 19988 df-ur 20005 df-ring 20058 df-cring 20059 df-subrg 20317 df-abv 20425 df-lmod 20473 df-scaf 20474 df-sra 20785 df-rgmod 20786 df-psmet 20936 df-xmet 20937 df-met 20938 df-bl 20939 df-mopn 20940 df-fbas 20941 df-fg 20942 df-cnfld 20945 df-top 22396 df-topon 22413 df-topsp 22435 df-bases 22449 df-cld 22523 df-ntr 22524 df-cls 22525 df-nei 22602 df-lp 22640 df-perf 22641 df-cn 22731 df-cnp 22732 df-haus 22819 df-tx 23066 df-hmeo 23259 df-fil 23350 df-fm 23442 df-flim 23443 df-flf 23444 df-tmd 23576 df-tgp 23577 df-tsms 23631 df-trg 23664 df-xms 23826 df-ms 23827 df-tms 23828 df-nm 24091 df-ngp 24092 df-nrg 24094 df-nlm 24095 df-ii 24393 df-cncf 24394 df-limc 25383 df-dv 25384 df-log 26065 df-xdiv 32084 df-esum 33026 df-siga 33107 df-meas 33194 df-prob 33407

This theorem is referenced by: cndprobprob 33437

W3C validator