Theorem measdivcstOLD 30287

Description: Division of a measure by a positive constant is a measure. (Contributed by Thierry Arnoux, 25-Dec-2016.) (New usage is discouraged.) (Proof modification is discouraged.)

Assertion

Ref	Expression
measdivcstOLD	⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) → (𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴)) ∈ (measures‘𝑆))

Distinct variable groups:   𝑥,𝐴   𝑥,𝑀   𝑥,𝑆

Proof of Theorem measdivcstOLD

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

Step	Hyp	Ref	Expression
1		funmpt 5926	. . . . . 6 ⊢ Fun (𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))
2		ovex 6678	. . . . . . . 8 ⊢ ((𝑀‘𝑥) /𝑒 𝐴) ∈ V
3	2	rgenw 2924	. . . . . . 7 ⊢ ∀𝑥 ∈ 𝑆 ((𝑀‘𝑥) /𝑒 𝐴) ∈ V
4		dmmptg 5632	. . . . . . 7 ⊢ (∀𝑥 ∈ 𝑆 ((𝑀‘𝑥) /𝑒 𝐴) ∈ V → dom (𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴)) = 𝑆)
5	3, 4	ax-mp 5	. . . . . 6 ⊢ dom (𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴)) = 𝑆
6		df-fn 5891	. . . . . 6 ⊢ ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴)) Fn 𝑆 ↔ (Fun (𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴)) ∧ dom (𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴)) = 𝑆))
7	1, 5, 6	mpbir2an 955	. . . . 5 ⊢ (𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴)) Fn 𝑆
8	7	a1i 11	. . . 4 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) → (𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴)) Fn 𝑆)
9		vex 3203	. . . . . . 7 ⊢ 𝑦 ∈ V
10		eqid 2622	. . . . . . . 8 ⊢ (𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴)) = (𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))
11	10	elrnmpt 5372	. . . . . . 7 ⊢ (𝑦 ∈ V → (𝑦 ∈ ran (𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴)) ↔ ∃𝑥 ∈ 𝑆 𝑦 = ((𝑀‘𝑥) /𝑒 𝐴)))
12	9, 11	ax-mp 5	. . . . . 6 ⊢ (𝑦 ∈ ran (𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴)) ↔ ∃𝑥 ∈ 𝑆 𝑦 = ((𝑀‘𝑥) /𝑒 𝐴))
13		measfrge0 30266	. . . . . . . . . . 11 ⊢ (𝑀 ∈ (measures‘𝑆) → 𝑀:𝑆⟶(0[,]+∞))
14		ffvelrn 6357	. . . . . . . . . . 11 ⊢ ((𝑀:𝑆⟶(0[,]+∞) ∧ 𝑥 ∈ 𝑆) → (𝑀‘𝑥) ∈ (0[,]+∞))
15	13, 14	sylan 488	. . . . . . . . . 10 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝑥 ∈ 𝑆) → (𝑀‘𝑥) ∈ (0[,]+∞))
16	15	adantlr 751	. . . . . . . . 9 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ 𝑥 ∈ 𝑆) → (𝑀‘𝑥) ∈ (0[,]+∞))
17		simplr 792	. . . . . . . . 9 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ 𝑥 ∈ 𝑆) → 𝐴 ∈ ℝ+)
18	16, 17	xrpxdivcld 29643	. . . . . . . 8 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ 𝑥 ∈ 𝑆) → ((𝑀‘𝑥) /𝑒 𝐴) ∈ (0[,]+∞))
19		eleq1a 2696	. . . . . . . 8 ⊢ (((𝑀‘𝑥) /𝑒 𝐴) ∈ (0[,]+∞) → (𝑦 = ((𝑀‘𝑥) /𝑒 𝐴) → 𝑦 ∈ (0[,]+∞)))
20	18, 19	syl 17	. . . . . . 7 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ 𝑥 ∈ 𝑆) → (𝑦 = ((𝑀‘𝑥) /𝑒 𝐴) → 𝑦 ∈ (0[,]+∞)))
21	20	rexlimdva 3031	. . . . . 6 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) → (∃𝑥 ∈ 𝑆 𝑦 = ((𝑀‘𝑥) /𝑒 𝐴) → 𝑦 ∈ (0[,]+∞)))
22	12, 21	syl5bi 232	. . . . 5 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) → (𝑦 ∈ ran (𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴)) → 𝑦 ∈ (0[,]+∞)))
23	22	ssrdv 3609	. . . 4 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) → ran (𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴)) ⊆ (0[,]+∞))
24		df-f 5892	. . . 4 ⊢ ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴)):𝑆⟶(0[,]+∞) ↔ ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴)) Fn 𝑆 ∧ ran (𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴)) ⊆ (0[,]+∞)))
25	8, 23, 24	sylanbrc 698	. . 3 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) → (𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴)):𝑆⟶(0[,]+∞))
26		measbase 30260	. . . . . . . 8 ⊢ (𝑀 ∈ (measures‘𝑆) → 𝑆 ∈ ∪ ran sigAlgebra)
27		0elsiga 30177	. . . . . . . 8 ⊢ (𝑆 ∈ ∪ ran sigAlgebra → ∅ ∈ 𝑆)
28	26, 27	syl 17	. . . . . . 7 ⊢ (𝑀 ∈ (measures‘𝑆) → ∅ ∈ 𝑆)
29	28	adantr 481	. . . . . 6 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) → ∅ ∈ 𝑆)
30		ovex 6678	. . . . . 6 ⊢ ((𝑀‘∅) /𝑒 𝐴) ∈ V
31	29, 30	jctir 561	. . . . 5 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) → (∅ ∈ 𝑆 ∧ ((𝑀‘∅) /𝑒 𝐴) ∈ V))
32		fveq2 6191	. . . . . . 7 ⊢ (𝑥 = ∅ → (𝑀‘𝑥) = (𝑀‘∅))
33	32	oveq1d 6665	. . . . . 6 ⊢ (𝑥 = ∅ → ((𝑀‘𝑥) /𝑒 𝐴) = ((𝑀‘∅) /𝑒 𝐴))
34	33, 10	fvmptg 6280	. . . . 5 ⊢ ((∅ ∈ 𝑆 ∧ ((𝑀‘∅) /𝑒 𝐴) ∈ V) → ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘∅) = ((𝑀‘∅) /𝑒 𝐴))
35	31, 34	syl 17	. . . 4 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) → ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘∅) = ((𝑀‘∅) /𝑒 𝐴))
36		measvnul 30269	. . . . . 6 ⊢ (𝑀 ∈ (measures‘𝑆) → (𝑀‘∅) = 0)
37	36	oveq1d 6665	. . . . 5 ⊢ (𝑀 ∈ (measures‘𝑆) → ((𝑀‘∅) /𝑒 𝐴) = (0 /𝑒 𝐴))
38		xdiv0rp 29638	. . . . 5 ⊢ (𝐴 ∈ ℝ+ → (0 /𝑒 𝐴) = 0)
39	37, 38	sylan9eq 2676	. . . 4 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) → ((𝑀‘∅) /𝑒 𝐴) = 0)
40	35, 39	eqtrd 2656	. . 3 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) → ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘∅) = 0)
41		simpll 790	. . . . . 6 ⊢ ((((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ 𝑦 ∈ 𝒫 𝑆) ∧ (𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧)) → (𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+))
42		simplr 792	. . . . . . 7 ⊢ ((((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ 𝑦 ∈ 𝒫 𝑆) ∧ (𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧)) → 𝑦 ∈ 𝒫 𝑆)
43		simprl 794	. . . . . . 7 ⊢ ((((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ 𝑦 ∈ 𝒫 𝑆) ∧ (𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧)) → 𝑦 ≼ ω)
44		simprr 796	. . . . . . 7 ⊢ ((((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ 𝑦 ∈ 𝒫 𝑆) ∧ (𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧)) → Disj 𝑧 ∈ 𝑦 𝑧)
45	42, 43, 44	3jca 1242	. . . . . 6 ⊢ ((((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ 𝑦 ∈ 𝒫 𝑆) ∧ (𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧)) → (𝑦 ∈ 𝒫 𝑆 ∧ 𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧))
46	9	a1i 11	. . . . . . . . 9 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ 𝑦 ∈ 𝒫 𝑆) → 𝑦 ∈ V)
47		simplll 798	. . . . . . . . . 10 ⊢ ((((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ 𝑦 ∈ 𝒫 𝑆) ∧ 𝑧 ∈ 𝑦) → 𝑀 ∈ (measures‘𝑆))
48		simplr 792	. . . . . . . . . . 11 ⊢ ((((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ 𝑦 ∈ 𝒫 𝑆) ∧ 𝑧 ∈ 𝑦) → 𝑦 ∈ 𝒫 𝑆)
49		simpr 477	. . . . . . . . . . 11 ⊢ ((((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ 𝑦 ∈ 𝒫 𝑆) ∧ 𝑧 ∈ 𝑦) → 𝑧 ∈ 𝑦)
50		elpwg 4166	. . . . . . . . . . . . 13 ⊢ (𝑦 ∈ V → (𝑦 ∈ 𝒫 𝑆 ↔ 𝑦 ⊆ 𝑆))
51	9, 50	ax-mp 5	. . . . . . . . . . . 12 ⊢ (𝑦 ∈ 𝒫 𝑆 ↔ 𝑦 ⊆ 𝑆)
52		ssel2 3598	. . . . . . . . . . . 12 ⊢ ((𝑦 ⊆ 𝑆 ∧ 𝑧 ∈ 𝑦) → 𝑧 ∈ 𝑆)
53	51, 52	sylanb 489	. . . . . . . . . . 11 ⊢ ((𝑦 ∈ 𝒫 𝑆 ∧ 𝑧 ∈ 𝑦) → 𝑧 ∈ 𝑆)
54	48, 49, 53	syl2anc 693	. . . . . . . . . 10 ⊢ ((((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ 𝑦 ∈ 𝒫 𝑆) ∧ 𝑧 ∈ 𝑦) → 𝑧 ∈ 𝑆)
55		measvxrge0 30268	. . . . . . . . . 10 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝑧 ∈ 𝑆) → (𝑀‘𝑧) ∈ (0[,]+∞))
56	47, 54, 55	syl2anc 693	. . . . . . . . 9 ⊢ ((((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ 𝑦 ∈ 𝒫 𝑆) ∧ 𝑧 ∈ 𝑦) → (𝑀‘𝑧) ∈ (0[,]+∞))
57		simplr 792	. . . . . . . . 9 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ 𝑦 ∈ 𝒫 𝑆) → 𝐴 ∈ ℝ+)
58	46, 56, 57	esumdivc 30145	. . . . . . . 8 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ 𝑦 ∈ 𝒫 𝑆) → (Σ*𝑧 ∈ 𝑦(𝑀‘𝑧) /𝑒 𝐴) = Σ*𝑧 ∈ 𝑦((𝑀‘𝑧) /𝑒 𝐴))
59	58	3ad2antr1 1226	. . . . . . 7 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ (𝑦 ∈ 𝒫 𝑆 ∧ 𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧)) → (Σ*𝑧 ∈ 𝑦(𝑀‘𝑧) /𝑒 𝐴) = Σ*𝑧 ∈ 𝑦((𝑀‘𝑧) /𝑒 𝐴))
60	26	ad2antrr 762	. . . . . . . . . 10 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ (𝑦 ∈ 𝒫 𝑆 ∧ 𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧)) → 𝑆 ∈ ∪ ran sigAlgebra)
61		simpr1 1067	. . . . . . . . . 10 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ (𝑦 ∈ 𝒫 𝑆 ∧ 𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧)) → 𝑦 ∈ 𝒫 𝑆)
62		simpr2 1068	. . . . . . . . . 10 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ (𝑦 ∈ 𝒫 𝑆 ∧ 𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧)) → 𝑦 ≼ ω)
63		sigaclcu 30180	. . . . . . . . . 10 ⊢ ((𝑆 ∈ ∪ ran sigAlgebra ∧ 𝑦 ∈ 𝒫 𝑆 ∧ 𝑦 ≼ ω) → ∪ 𝑦 ∈ 𝑆)
64	60, 61, 62, 63	syl3anc 1326	. . . . . . . . 9 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ (𝑦 ∈ 𝒫 𝑆 ∧ 𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧)) → ∪ 𝑦 ∈ 𝑆)
65		fveq2 6191	. . . . . . . . . . 11 ⊢ (𝑥 = ∪ 𝑦 → (𝑀‘𝑥) = (𝑀‘∪ 𝑦))
66	65	oveq1d 6665	. . . . . . . . . 10 ⊢ (𝑥 = ∪ 𝑦 → ((𝑀‘𝑥) /𝑒 𝐴) = ((𝑀‘∪ 𝑦) /𝑒 𝐴))
67	66, 10, 2	fvmpt3i 6287	. . . . . . . . 9 ⊢ (∪ 𝑦 ∈ 𝑆 → ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘∪ 𝑦) = ((𝑀‘∪ 𝑦) /𝑒 𝐴))
68	64, 67	syl 17	. . . . . . . 8 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ (𝑦 ∈ 𝒫 𝑆 ∧ 𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧)) → ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘∪ 𝑦) = ((𝑀‘∪ 𝑦) /𝑒 𝐴))
69		simpll 790	. . . . . . . . . . 11 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ (𝑦 ∈ 𝒫 𝑆 ∧ 𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧)) → 𝑀 ∈ (measures‘𝑆))
70	69, 61	jca 554	. . . . . . . . . 10 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ (𝑦 ∈ 𝒫 𝑆 ∧ 𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧)) → (𝑀 ∈ (measures‘𝑆) ∧ 𝑦 ∈ 𝒫 𝑆))
71		simpr3 1069	. . . . . . . . . . 11 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ (𝑦 ∈ 𝒫 𝑆 ∧ 𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧)) → Disj 𝑧 ∈ 𝑦 𝑧)
72	62, 71	jca 554	. . . . . . . . . 10 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ (𝑦 ∈ 𝒫 𝑆 ∧ 𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧)) → (𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧))
73		measvun 30272	. . . . . . . . . . . . 13 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝑦 ∈ 𝒫 𝑆 ∧ (𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧)) → (𝑀‘∪ 𝑦) = Σ*𝑧 ∈ 𝑦(𝑀‘𝑧))
74	73	3expia 1267	. . . . . . . . . . . 12 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝑦 ∈ 𝒫 𝑆) → ((𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧) → (𝑀‘∪ 𝑦) = Σ*𝑧 ∈ 𝑦(𝑀‘𝑧)))
75	74	ralrimiva 2966	. . . . . . . . . . 11 ⊢ (𝑀 ∈ (measures‘𝑆) → ∀𝑦 ∈ 𝒫 𝑆((𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧) → (𝑀‘∪ 𝑦) = Σ*𝑧 ∈ 𝑦(𝑀‘𝑧)))
76	75	r19.21bi 2932	. . . . . . . . . 10 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝑦 ∈ 𝒫 𝑆) → ((𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧) → (𝑀‘∪ 𝑦) = Σ*𝑧 ∈ 𝑦(𝑀‘𝑧)))
77	70, 72, 76	sylc 65	. . . . . . . . 9 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ (𝑦 ∈ 𝒫 𝑆 ∧ 𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧)) → (𝑀‘∪ 𝑦) = Σ*𝑧 ∈ 𝑦(𝑀‘𝑧))
78	77	oveq1d 6665	. . . . . . . 8 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ (𝑦 ∈ 𝒫 𝑆 ∧ 𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧)) → ((𝑀‘∪ 𝑦) /𝑒 𝐴) = (Σ*𝑧 ∈ 𝑦(𝑀‘𝑧) /𝑒 𝐴))
79	68, 78	eqtrd 2656	. . . . . . 7 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ (𝑦 ∈ 𝒫 𝑆 ∧ 𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧)) → ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘∪ 𝑦) = (Σ*𝑧 ∈ 𝑦(𝑀‘𝑧) /𝑒 𝐴))
80		fveq2 6191	. . . . . . . . . . . 12 ⊢ (𝑥 = 𝑧 → (𝑀‘𝑥) = (𝑀‘𝑧))
81	80	oveq1d 6665	. . . . . . . . . . 11 ⊢ (𝑥 = 𝑧 → ((𝑀‘𝑥) /𝑒 𝐴) = ((𝑀‘𝑧) /𝑒 𝐴))
82	81, 10, 2	fvmpt3i 6287	. . . . . . . . . 10 ⊢ (𝑧 ∈ 𝑆 → ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘𝑧) = ((𝑀‘𝑧) /𝑒 𝐴))
83	53, 82	syl 17	. . . . . . . . 9 ⊢ ((𝑦 ∈ 𝒫 𝑆 ∧ 𝑧 ∈ 𝑦) → ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘𝑧) = ((𝑀‘𝑧) /𝑒 𝐴))
84	83	esumeq2dv 30100	. . . . . . . 8 ⊢ (𝑦 ∈ 𝒫 𝑆 → Σ*𝑧 ∈ 𝑦((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘𝑧) = Σ*𝑧 ∈ 𝑦((𝑀‘𝑧) /𝑒 𝐴))
85	61, 84	syl 17	. . . . . . 7 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ (𝑦 ∈ 𝒫 𝑆 ∧ 𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧)) → Σ*𝑧 ∈ 𝑦((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘𝑧) = Σ*𝑧 ∈ 𝑦((𝑀‘𝑧) /𝑒 𝐴))
86	59, 79, 85	3eqtr4d 2666	. . . . . 6 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ (𝑦 ∈ 𝒫 𝑆 ∧ 𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧)) → ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘∪ 𝑦) = Σ*𝑧 ∈ 𝑦((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘𝑧))
87	41, 45, 86	syl2anc 693	. . . . 5 ⊢ ((((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ 𝑦 ∈ 𝒫 𝑆) ∧ (𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧)) → ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘∪ 𝑦) = Σ*𝑧 ∈ 𝑦((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘𝑧))
88	87	ex 450	. . . 4 ⊢ (((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) ∧ 𝑦 ∈ 𝒫 𝑆) → ((𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧) → ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘∪ 𝑦) = Σ*𝑧 ∈ 𝑦((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘𝑧)))
89	88	ralrimiva 2966	. . 3 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) → ∀𝑦 ∈ 𝒫 𝑆((𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧) → ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘∪ 𝑦) = Σ*𝑧 ∈ 𝑦((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘𝑧)))
90	25, 40, 89	3jca 1242	. 2 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) → ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴)):𝑆⟶(0[,]+∞) ∧ ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘∅) = 0 ∧ ∀𝑦 ∈ 𝒫 𝑆((𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧) → ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘∪ 𝑦) = Σ*𝑧 ∈ 𝑦((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘𝑧))))
91		ismeas 30262	. . . . 5 ⊢ (𝑆 ∈ ∪ ran sigAlgebra → ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴)) ∈ (measures‘𝑆) ↔ ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴)):𝑆⟶(0[,]+∞) ∧ ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘∅) = 0 ∧ ∀𝑦 ∈ 𝒫 𝑆((𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧) → ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘∪ 𝑦) = Σ*𝑧 ∈ 𝑦((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘𝑧)))))
92	26, 91	syl 17	. . . 4 ⊢ (𝑀 ∈ (measures‘𝑆) → ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴)) ∈ (measures‘𝑆) ↔ ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴)):𝑆⟶(0[,]+∞) ∧ ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘∅) = 0 ∧ ∀𝑦 ∈ 𝒫 𝑆((𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧) → ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘∪ 𝑦) = Σ*𝑧 ∈ 𝑦((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘𝑧)))))
93	92	biimprd 238	. . 3 ⊢ (𝑀 ∈ (measures‘𝑆) → (((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴)):𝑆⟶(0[,]+∞) ∧ ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘∅) = 0 ∧ ∀𝑦 ∈ 𝒫 𝑆((𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧) → ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘∪ 𝑦) = Σ*𝑧 ∈ 𝑦((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘𝑧))) → (𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴)) ∈ (measures‘𝑆)))
94	93	adantr 481	. 2 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) → (((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴)):𝑆⟶(0[,]+∞) ∧ ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘∅) = 0 ∧ ∀𝑦 ∈ 𝒫 𝑆((𝑦 ≼ ω ∧ Disj 𝑧 ∈ 𝑦 𝑧) → ((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘∪ 𝑦) = Σ*𝑧 ∈ 𝑦((𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴))‘𝑧))) → (𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴)) ∈ (measures‘𝑆)))
95	90, 94	mpd 15	1 ⊢ ((𝑀 ∈ (measures‘𝑆) ∧ 𝐴 ∈ ℝ+) → (𝑥 ∈ 𝑆 ↦ ((𝑀‘𝑥) /𝑒 𝐴)) ∈ (measures‘𝑆))

Syntax hints:   → wi 4   ↔ wb 196   ∧ wa 384   ∧ w3a 1037   = wceq 1483   ∈ wcel 1990  ∀wral 2912  ∃wrex 2913  Vcvv 3200   ⊆ wss 3574  ∅c0 3915  𝒫 cpw 4158  ∪ cuni 4436  Disj wdisj 4620   class class class wbr 4653   ↦ cmpt 4729  dom cdm 5114  ran crn 5115  Fun wfun 5882   Fn wfn 5883  ⟶wf 5884  ‘cfv 5888  (class class class)co 6650  ωcom 7065   ≼ cdom 7953  0cc0 9936  +∞cpnf 10071  ℝ⁺crp 11832  [,]cicc 12178   /_𝑒 cxdiv 29625  Σ^*cesum 30089  sigAlgebracsiga 30170  measurescmeas 30258

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-rep 4771  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949  ax-cnex 9992  ax-resscn 9993  ax-1cn 9994  ax-icn 9995  ax-addcl 9996  ax-addrcl 9997  ax-mulcl 9998  ax-mulrcl 9999  ax-mulcom 10000  ax-addass 10001  ax-mulass 10002  ax-distr 10003  ax-i2m1 10004  ax-1ne0 10005  ax-1rid 10006  ax-rnegex 10007  ax-rrecex 10008  ax-cnre 10009  ax-pre-lttri 10010  ax-pre-lttrn 10011  ax-pre-ltadd 10012  ax-pre-mulgt0 10013  ax-pre-sup 10014

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1038  df-3an 1039  df-tru 1486  df-fal 1489  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-nel 2898  df-ral 2917  df-rex 2918  df-reu 2919  df-rmo 2920  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-pss 3590  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-tp 4182  df-op 4184  df-uni 4437  df-int 4476  df-iun 4522  df-iin 4523  df-disj 4621  df-br 4654  df-opab 4713  df-mpt 4730  df-tr 4753  df-id 5024  df-eprel 5029  df-po 5035  df-so 5036  df-fr 5073  df-se 5074  df-we 5075  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-pred 5680  df-ord 5726  df-on 5727  df-lim 5728  df-suc 5729  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-f1 5893  df-fo 5894  df-f1o 5895  df-fv 5896  df-isom 5897  df-riota 6611  df-ov 6653  df-oprab 6654  df-mpt2 6655  df-of 6897  df-om 7066  df-1st 7168  df-2nd 7169  df-supp 7296  df-wrecs 7407  df-recs 7468  df-rdg 7506  df-1o 7560  df-oadd 7564  df-er 7742  df-map 7859  df-en 7956  df-dom 7957  df-sdom 7958  df-fin 7959  df-fsupp 8276  df-fi 8317  df-sup 8348  df-inf 8349  df-oi 8415  df-card 8765  df-pnf 10076  df-mnf 10077  df-xr 10078  df-ltxr 10079  df-le 10080  df-sub 10268  df-neg 10269  df-div 10685  df-nn 11021  df-2 11079  df-3 11080  df-4 11081  df-5 11082  df-6 11083  df-7 11084  df-8 11085  df-9 11086  df-n0 11293  df-z 11378  df-dec 11494  df-uz 11688  df-q 11789  df-rp 11833  df-xneg 11946  df-xadd 11947  df-xmul 11948  df-ioo 12179  df-ioc 12180  df-ico 12181  df-icc 12182  df-fz 12327  df-fzo 12466  df-seq 12802  df-hash 13118  df-struct 15859  df-ndx 15860  df-slot 15861  df-base 15863  df-sets 15864  df-ress 15865  df-plusg 15954  df-mulr 15955  df-tset 15960  df-ple 15961  df-ds 15964  df-rest 16083  df-topn 16084  df-0g 16102  df-gsum 16103  df-topgen 16104  df-ordt 16161  df-xrs 16162  df-mre 16246  df-mrc 16247  df-acs 16249  df-ps 17200  df-tsr 17201  df-mgm 17242  df-sgrp 17284  df-mnd 17295  df-mhm 17335  df-submnd 17336  df-cntz 17750  df-cmn 18195  df-fbas 19743  df-fg 19744  df-top 20699  df-topon 20716  df-topsp 20737  df-bases 20750  df-ntr 20824  df-nei 20902  df-cn 21031  df-cnp 21032  df-haus 21119  df-fil 21650  df-fm 21742  df-flim 21743  df-flf 21744  df-tsms 21930  df-xdiv 29626  df-esum 30090  df-siga 30171  df-meas 30259

This theorem is referenced by:  probfinmeasbOLD  30490  probmeasb  30492