Theorem oms0 29686

Description: A constructed outer measure evaluates to zero for the empty set. (Contributed by Thierry Arnoux, 15-Sep-2019.) (Revised by AV, 4-Oct-2020.)

Hypotheses

Ref	Expression
oms.m	⊢ 𝑀 = (toOMeas‘𝑅)
oms.o	⊢ (𝜑 → 𝑄 ∈ 𝑉)
oms.r	⊢ (𝜑 → 𝑅:𝑄⟶(0[,]+∞))
oms.d	⊢ (𝜑 → ∅ ∈ dom 𝑅)
oms.0	⊢ (𝜑 → (𝑅‘∅) = 0)

Assertion

Ref	Expression
oms0	⊢ (𝜑 → (𝑀‘∅) = 0)

Proof of Theorem oms0

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

Step	Hyp	Ref	Expression
1		oms.m	. . 3 ⊢ 𝑀 = (toOMeas‘𝑅)
2	1	fveq1i 6104	. 2 ⊢ (𝑀‘∅) = ((toOMeas‘𝑅)‘∅)
3		oms.o	. . . 4 ⊢ (𝜑 → 𝑄 ∈ 𝑉)
4		oms.r	. . . 4 ⊢ (𝜑 → 𝑅:𝑄⟶(0[,]+∞))
5		0ss 3924	. . . . 5 ⊢ ∅ ⊆ ∪ dom 𝑅
6		fdm 5964	. . . . . . 7 ⊢ (𝑅:𝑄⟶(0[,]+∞) → dom 𝑅 = 𝑄)
7	4, 6	syl 17	. . . . . 6 ⊢ (𝜑 → dom 𝑅 = 𝑄)
8	7	unieqd 4382	. . . . 5 ⊢ (𝜑 → ∪ dom 𝑅 = ∪ 𝑄)
9	5, 8	syl5sseq 3616	. . . 4 ⊢ (𝜑 → ∅ ⊆ ∪ 𝑄)
10		omsfval 29683	. . . 4 ⊢ ((𝑄 ∈ 𝑉 ∧ 𝑅:𝑄⟶(0[,]+∞) ∧ ∅ ⊆ ∪ 𝑄) → ((toOMeas‘𝑅)‘∅) = inf(ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)), (0[,]+∞), < ))
11	3, 4, 9, 10	syl3anc 1318	. . 3 ⊢ (𝜑 → ((toOMeas‘𝑅)‘∅) = inf(ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)), (0[,]+∞), < ))
12		iccssxr 12127	. . . . . 6 ⊢ (0[,]+∞) ⊆ ℝ*
13		xrltso 11850	. . . . . 6 ⊢ < Or ℝ*
14		soss 4977	. . . . . 6 ⊢ ((0[,]+∞) ⊆ ℝ* → ( < Or ℝ* → < Or (0[,]+∞)))
15	12, 13, 14	mp2 9	. . . . 5 ⊢ < Or (0[,]+∞)
16	15	a1i 11	. . . 4 ⊢ (𝜑 → < Or (0[,]+∞))
17		0e0iccpnf 12154	. . . . 5 ⊢ 0 ∈ (0[,]+∞)
18	17	a1i 11	. . . 4 ⊢ (𝜑 → 0 ∈ (0[,]+∞))
19		oms.d	. . . . . . . . . 10 ⊢ (𝜑 → ∅ ∈ dom 𝑅)
20	19	snssd 4281	. . . . . . . . 9 ⊢ (𝜑 → {∅} ⊆ dom 𝑅)
21		p0ex 4779	. . . . . . . . . 10 ⊢ {∅} ∈ V
22	21	elpw 4114	. . . . . . . . 9 ⊢ ({∅} ∈ 𝒫 dom 𝑅 ↔ {∅} ⊆ dom 𝑅)
23	20, 22	sylibr 223	. . . . . . . 8 ⊢ (𝜑 → {∅} ∈ 𝒫 dom 𝑅)
24		0ss 3924	. . . . . . . . 9 ⊢ ∅ ⊆ ∪ {∅}
25		0ex 4718	. . . . . . . . . 10 ⊢ ∅ ∈ V
26		snct 28874	. . . . . . . . . 10 ⊢ (∅ ∈ V → {∅} ≼ ω)
27	25, 26	ax-mp 5	. . . . . . . . 9 ⊢ {∅} ≼ ω
28	24, 27	pm3.2i 470	. . . . . . . 8 ⊢ (∅ ⊆ ∪ {∅} ∧ {∅} ≼ ω)
29	23, 28	jctir 559	. . . . . . 7 ⊢ (𝜑 → ({∅} ∈ 𝒫 dom 𝑅 ∧ (∅ ⊆ ∪ {∅} ∧ {∅} ≼ ω)))
30		unieq 4380	. . . . . . . . . 10 ⊢ (𝑧 = {∅} → ∪ 𝑧 = ∪ {∅})
31	30	sseq2d 3596	. . . . . . . . 9 ⊢ (𝑧 = {∅} → (∅ ⊆ ∪ 𝑧 ↔ ∅ ⊆ ∪ {∅}))
32		breq1 4586	. . . . . . . . 9 ⊢ (𝑧 = {∅} → (𝑧 ≼ ω ↔ {∅} ≼ ω))
33	31, 32	anbi12d 743	. . . . . . . 8 ⊢ (𝑧 = {∅} → ((∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω) ↔ (∅ ⊆ ∪ {∅} ∧ {∅} ≼ ω)))
34	33	elrab 3331	. . . . . . 7 ⊢ ({∅} ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↔ ({∅} ∈ 𝒫 dom 𝑅 ∧ (∅ ⊆ ∪ {∅} ∧ {∅} ≼ ω)))
35	29, 34	sylibr 223	. . . . . 6 ⊢ (𝜑 → {∅} ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)})
36		simpr 476	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑦 = ∅) → 𝑦 = ∅)
37	36	fveq2d 6107	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑦 = ∅) → (𝑅‘𝑦) = (𝑅‘∅))
38		oms.0	. . . . . . . . . 10 ⊢ (𝜑 → (𝑅‘∅) = 0)
39	38	adantr 480	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑦 = ∅) → (𝑅‘∅) = 0)
40	37, 39	eqtrd 2644	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑦 = ∅) → (𝑅‘𝑦) = 0)
41	40, 19, 18	esumsn 29454	. . . . . . 7 ⊢ (𝜑 → Σ*𝑦 ∈ {∅} (𝑅‘𝑦) = 0)
42	41	eqcomd 2616	. . . . . 6 ⊢ (𝜑 → 0 = Σ*𝑦 ∈ {∅} (𝑅‘𝑦))
43		esumeq1 29423	. . . . . . . 8 ⊢ (𝑥 = {∅} → Σ*𝑦 ∈ 𝑥(𝑅‘𝑦) = Σ*𝑦 ∈ {∅} (𝑅‘𝑦))
44	43	eqeq2d 2620	. . . . . . 7 ⊢ (𝑥 = {∅} → (0 = Σ*𝑦 ∈ 𝑥(𝑅‘𝑦) ↔ 0 = Σ*𝑦 ∈ {∅} (𝑅‘𝑦)))
45	44	rspcev 3282	. . . . . 6 ⊢ (({∅} ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ∧ 0 = Σ*𝑦 ∈ {∅} (𝑅‘𝑦)) → ∃𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)}0 = Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))
46	35, 42, 45	syl2anc 691	. . . . 5 ⊢ (𝜑 → ∃𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)}0 = Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))
47		0xr 9965	. . . . . 6 ⊢ 0 ∈ ℝ*
48		eqid 2610	. . . . . . 7 ⊢ (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)) = (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))
49	48	elrnmpt 5293	. . . . . 6 ⊢ (0 ∈ ℝ* → (0 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)) ↔ ∃𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)}0 = Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)))
50	47, 49	ax-mp 5	. . . . 5 ⊢ (0 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)) ↔ ∃𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)}0 = Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))
51	46, 50	sylibr 223	. . . 4 ⊢ (𝜑 → 0 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)))
52		nfv 1830	. . . . . . . 8 ⊢ Ⅎ𝑥𝜑
53		nfmpt1 4675	. . . . . . . . . 10 ⊢ Ⅎ𝑥(𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))
54	53	nfrn 5289	. . . . . . . . 9 ⊢ Ⅎ𝑥ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))
55	54	nfcri 2745	. . . . . . . 8 ⊢ Ⅎ𝑥 𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))
56	52, 55	nfan 1816	. . . . . . 7 ⊢ Ⅎ𝑥(𝜑 ∧ 𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)))
57		simpr 476	. . . . . . . 8 ⊢ ((((𝜑 ∧ 𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))) ∧ 𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)}) ∧ 𝑎 = Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)) → 𝑎 = Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))
58		vex 3176	. . . . . . . . 9 ⊢ 𝑥 ∈ V
59		nfv 1830	. . . . . . . . . . . . 13 ⊢ Ⅎ𝑦𝜑
60		nfcv 2751	. . . . . . . . . . . . . . . 16 ⊢ Ⅎ𝑦{𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)}
61		nfcv 2751	. . . . . . . . . . . . . . . . 17 ⊢ Ⅎ𝑦𝑥
62	61	nfesum1 29429	. . . . . . . . . . . . . . . 16 ⊢ Ⅎ𝑦Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)
63	60, 62	nfmpt 4674	. . . . . . . . . . . . . . 15 ⊢ Ⅎ𝑦(𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))
64	63	nfrn 5289	. . . . . . . . . . . . . 14 ⊢ Ⅎ𝑦ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))
65	64	nfcri 2745	. . . . . . . . . . . . 13 ⊢ Ⅎ𝑦 𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))
66	59, 65	nfan 1816	. . . . . . . . . . . 12 ⊢ Ⅎ𝑦(𝜑 ∧ 𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)))
67		nfv 1830	. . . . . . . . . . . 12 ⊢ Ⅎ𝑦 𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)}
68	66, 67	nfan 1816	. . . . . . . . . . 11 ⊢ Ⅎ𝑦((𝜑 ∧ 𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))) ∧ 𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)})
69	62	nfeq2 2766	. . . . . . . . . . 11 ⊢ Ⅎ𝑦 𝑎 = Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)
70	68, 69	nfan 1816	. . . . . . . . . 10 ⊢ Ⅎ𝑦(((𝜑 ∧ 𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))) ∧ 𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)}) ∧ 𝑎 = Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))
71	4	ad4antr 764	. . . . . . . . . . . 12 ⊢ (((((𝜑 ∧ 𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))) ∧ 𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)}) ∧ 𝑎 = Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)) ∧ 𝑦 ∈ 𝑥) → 𝑅:𝑄⟶(0[,]+∞))
72		ssrab2 3650	. . . . . . . . . . . . . . . 16 ⊢ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ⊆ 𝒫 dom 𝑅
73		simpllr 795	. . . . . . . . . . . . . . . 16 ⊢ (((((𝜑 ∧ 𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))) ∧ 𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)}) ∧ 𝑎 = Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)) ∧ 𝑦 ∈ 𝑥) → 𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)})
74	72, 73	sseldi 3566	. . . . . . . . . . . . . . 15 ⊢ (((((𝜑 ∧ 𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))) ∧ 𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)}) ∧ 𝑎 = Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)) ∧ 𝑦 ∈ 𝑥) → 𝑥 ∈ 𝒫 dom 𝑅)
75	7	pweqd 4113	. . . . . . . . . . . . . . . 16 ⊢ (𝜑 → 𝒫 dom 𝑅 = 𝒫 𝑄)
76	75	ad4antr 764	. . . . . . . . . . . . . . 15 ⊢ (((((𝜑 ∧ 𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))) ∧ 𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)}) ∧ 𝑎 = Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)) ∧ 𝑦 ∈ 𝑥) → 𝒫 dom 𝑅 = 𝒫 𝑄)
77	74, 76	eleqtrd 2690	. . . . . . . . . . . . . 14 ⊢ (((((𝜑 ∧ 𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))) ∧ 𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)}) ∧ 𝑎 = Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)) ∧ 𝑦 ∈ 𝑥) → 𝑥 ∈ 𝒫 𝑄)
78	77	elpwid 4118	. . . . . . . . . . . . 13 ⊢ (((((𝜑 ∧ 𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))) ∧ 𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)}) ∧ 𝑎 = Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)) ∧ 𝑦 ∈ 𝑥) → 𝑥 ⊆ 𝑄)
79		simpr 476	. . . . . . . . . . . . 13 ⊢ (((((𝜑 ∧ 𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))) ∧ 𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)}) ∧ 𝑎 = Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)) ∧ 𝑦 ∈ 𝑥) → 𝑦 ∈ 𝑥)
80	78, 79	sseldd 3569	. . . . . . . . . . . 12 ⊢ (((((𝜑 ∧ 𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))) ∧ 𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)}) ∧ 𝑎 = Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)) ∧ 𝑦 ∈ 𝑥) → 𝑦 ∈ 𝑄)
81	71, 80	ffvelrnd 6268	. . . . . . . . . . 11 ⊢ (((((𝜑 ∧ 𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))) ∧ 𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)}) ∧ 𝑎 = Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)) ∧ 𝑦 ∈ 𝑥) → (𝑅‘𝑦) ∈ (0[,]+∞))
82	81	ex 449	. . . . . . . . . 10 ⊢ ((((𝜑 ∧ 𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))) ∧ 𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)}) ∧ 𝑎 = Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)) → (𝑦 ∈ 𝑥 → (𝑅‘𝑦) ∈ (0[,]+∞)))
83	70, 82	ralrimi 2940	. . . . . . . . 9 ⊢ ((((𝜑 ∧ 𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))) ∧ 𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)}) ∧ 𝑎 = Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)) → ∀𝑦 ∈ 𝑥 (𝑅‘𝑦) ∈ (0[,]+∞))
84	61	esumcl 29419	. . . . . . . . 9 ⊢ ((𝑥 ∈ V ∧ ∀𝑦 ∈ 𝑥 (𝑅‘𝑦) ∈ (0[,]+∞)) → Σ*𝑦 ∈ 𝑥(𝑅‘𝑦) ∈ (0[,]+∞))
85	58, 83, 84	sylancr 694	. . . . . . . 8 ⊢ ((((𝜑 ∧ 𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))) ∧ 𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)}) ∧ 𝑎 = Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)) → Σ*𝑦 ∈ 𝑥(𝑅‘𝑦) ∈ (0[,]+∞))
86	57, 85	eqeltrd 2688	. . . . . . 7 ⊢ ((((𝜑 ∧ 𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))) ∧ 𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)}) ∧ 𝑎 = Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)) → 𝑎 ∈ (0[,]+∞))
87		vex 3176	. . . . . . . . . 10 ⊢ 𝑎 ∈ V
88	48	elrnmpt 5293	. . . . . . . . . 10 ⊢ (𝑎 ∈ V → (𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)) ↔ ∃𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)}𝑎 = Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)))
89	87, 88	ax-mp 5	. . . . . . . . 9 ⊢ (𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)) ↔ ∃𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)}𝑎 = Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))
90	89	biimpi 205	. . . . . . . 8 ⊢ (𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)) → ∃𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)}𝑎 = Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))
91	90	adantl 481	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))) → ∃𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)}𝑎 = Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))
92	56, 86, 91	r19.29af 3058	. . . . . 6 ⊢ ((𝜑 ∧ 𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))) → 𝑎 ∈ (0[,]+∞))
93		pnfxr 9971	. . . . . . 7 ⊢ +∞ ∈ ℝ*
94		iccgelb 12101	. . . . . . 7 ⊢ ((0 ∈ ℝ* ∧ +∞ ∈ ℝ* ∧ 𝑎 ∈ (0[,]+∞)) → 0 ≤ 𝑎)
95	47, 93, 94	mp3an12 1406	. . . . . 6 ⊢ (𝑎 ∈ (0[,]+∞) → 0 ≤ 𝑎)
96	92, 95	syl 17	. . . . 5 ⊢ ((𝜑 ∧ 𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))) → 0 ≤ 𝑎)
97	12, 92	sseldi 3566	. . . . . 6 ⊢ ((𝜑 ∧ 𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))) → 𝑎 ∈ ℝ*)
98		xrlenlt 9982	. . . . . . 7 ⊢ ((0 ∈ ℝ* ∧ 𝑎 ∈ ℝ*) → (0 ≤ 𝑎 ↔ ¬ 𝑎 < 0))
99	98	bicomd 212	. . . . . 6 ⊢ ((0 ∈ ℝ* ∧ 𝑎 ∈ ℝ*) → (¬ 𝑎 < 0 ↔ 0 ≤ 𝑎))
100	47, 97, 99	sylancr 694	. . . . 5 ⊢ ((𝜑 ∧ 𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))) → (¬ 𝑎 < 0 ↔ 0 ≤ 𝑎))
101	96, 100	mpbird 246	. . . 4 ⊢ ((𝜑 ∧ 𝑎 ∈ ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦))) → ¬ 𝑎 < 0)
102	16, 18, 51, 101	infmin 8283	. . 3 ⊢ (𝜑 → inf(ran (𝑥 ∈ {𝑧 ∈ 𝒫 dom 𝑅 ∣ (∅ ⊆ ∪ 𝑧 ∧ 𝑧 ≼ ω)} ↦ Σ*𝑦 ∈ 𝑥(𝑅‘𝑦)), (0[,]+∞), < ) = 0)
103	11, 102	eqtrd 2644	. 2 ⊢ (𝜑 → ((toOMeas‘𝑅)‘∅) = 0)
104	2, 103	syl5eq 2656	1 ⊢ (𝜑 → (𝑀‘∅) = 0)

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 195   ∧ wa 383   = wceq 1475   ∈ wcel 1977  ∀wral 2896  ∃wrex 2897  {crab 2900  Vcvv 3173   ⊆ wss 3540  ∅c0 3874  𝒫 cpw 4108  {csn 4125  ∪ cuni 4372   class class class wbr 4583   ↦ cmpt 4643   Or wor 4958  dom cdm 5038  ran crn 5039  ⟶wf 5800  ‘cfv 5804  (class class class)co 6549  ωcom 6957   ≼ cdom 7839  infcinf 8230  0cc0 9815  +∞cpnf 9950  ℝ^*cxr 9952   < clt 9953   ≤ cle 9954  [,]cicc 12049  Σ^*cesum 29416  toOMeascoms 29680

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1713  ax-4 1728  ax-5 1827  ax-6 1875  ax-7 1922  ax-8 1979  ax-9 1986  ax-10 2006  ax-11 2021  ax-12 2034  ax-13 2234  ax-ext 2590  ax-rep 4699  ax-sep 4709  ax-nul 4717  ax-pow 4769  ax-pr 4833  ax-un 6847  ax-inf2 8421  ax-cnex 9871  ax-resscn 9872  ax-1cn 9873  ax-icn 9874  ax-addcl 9875  ax-addrcl 9876  ax-mulcl 9877  ax-mulrcl 9878  ax-mulcom 9879  ax-addass 9880  ax-mulass 9881  ax-distr 9882  ax-i2m1 9883  ax-1ne0 9884  ax-1rid 9885  ax-rnegex 9886  ax-rrecex 9887  ax-cnre 9888  ax-pre-lttri 9889  ax-pre-lttrn 9890  ax-pre-ltadd 9891  ax-pre-mulgt0 9892  ax-pre-sup 9893

This theorem depends on definitions:  df-bi 196  df-or 384  df-an 385  df-3or 1032  df-3an 1033  df-tru 1478  df-fal 1481  df-ex 1696  df-nf 1701  df-sb 1868  df-eu 2462  df-mo 2463  df-clab 2597  df-cleq 2603  df-clel 2606  df-nfc 2740  df-ne 2782  df-nel 2783  df-ral 2901  df-rex 2902  df-reu 2903  df-rmo 2904  df-rab 2905  df-v 3175  df-sbc 3403  df-csb 3500  df-dif 3543  df-un 3545  df-in 3547  df-ss 3554  df-pss 3556  df-nul 3875  df-if 4037  df-pw 4110  df-sn 4126  df-pr 4128  df-tp 4130  df-op 4132  df-uni 4373  df-int 4411  df-iun 4457  df-iin 4458  df-br 4584  df-opab 4644  df-mpt 4645  df-tr 4681  df-eprel 4949  df-id 4953  df-po 4959  df-so 4960  df-fr 4997  df-se 4998  df-we 4999  df-xp 5044  df-rel 5045  df-cnv 5046  df-co 5047  df-dm 5048  df-rn 5049  df-res 5050  df-ima 5051  df-pred 5597  df-ord 5643  df-on 5644  df-lim 5645  df-suc 5646  df-iota 5768  df-fun 5806  df-fn 5807  df-f 5808  df-f1 5809  df-fo 5810  df-f1o 5811  df-fv 5812  df-isom 5813  df-riota 6511  df-ov 6552  df-oprab 6553  df-mpt2 6554  df-of 6795  df-om 6958  df-1st 7059  df-2nd 7060  df-supp 7183  df-wrecs 7294  df-recs 7355  df-rdg 7393  df-1o 7447  df-oadd 7451  df-er 7629  df-map 7746  df-en 7842  df-dom 7843  df-sdom 7844  df-fin 7845  df-fsupp 8159  df-fi 8200  df-sup 8231  df-inf 8232  df-oi 8298  df-card 8648  df-pnf 9955  df-mnf 9956  df-xr 9957  df-ltxr 9958  df-le 9959  df-sub 10147  df-neg 10148  df-div 10564  df-nn 10898  df-2 10956  df-3 10957  df-4 10958  df-5 10959  df-6 10960  df-7 10961  df-8 10962  df-9 10963  df-n0 11170  df-z 11255  df-dec 11370  df-uz 11564  df-q 11665  df-xadd 11823  df-ioo 12050  df-ioc 12051  df-ico 12052  df-icc 12053  df-fz 12198  df-fzo 12335  df-seq 12664  df-hash 12980  df-struct 15697  df-ndx 15698  df-slot 15699  df-base 15700  df-sets 15701  df-ress 15702  df-plusg 15781  df-mulr 15782  df-tset 15787  df-ple 15788  df-ds 15791  df-rest 15906  df-topn 15907  df-0g 15925  df-gsum 15926  df-topgen 15927  df-ordt 15984  df-xrs 15985  df-mre 16069  df-mrc 16070  df-acs 16072  df-ps 17023  df-tsr 17024  df-mgm 17065  df-sgrp 17107  df-mnd 17118  df-submnd 17159  df-mulg 17364  df-cntz 17573  df-cmn 18018  df-fbas 19564  df-fg 19565  df-top 20521  df-bases 20522  df-topon 20523  df-topsp 20524  df-ntr 20634  df-nei 20712  df-cn 20841  df-haus 20929  df-fil 21460  df-fm 21552  df-flim 21553  df-flf 21554  df-tsms 21740  df-esum 29417  df-oms 29681

This theorem is referenced by:  omsmeas  29712