Theorem esum2dlem 31726

Description: Lemma for esum2d 31727 (finite case). (Contributed by Thierry Arnoux, 17-May-2020.) (Proof shortened by AV, 17-Sep-2021.)

Hypotheses

Ref	Expression
esum2d.0	⊢ Ⅎ𝑘𝐹
esum2d.1	⊢ (𝑧 = ⟨𝑗, 𝑘⟩ → 𝐹 = 𝐶)
esum2d.2	⊢ (𝜑 → 𝐴 ∈ 𝑉)
esum2d.3	⊢ ((𝜑 ∧ 𝑗 ∈ 𝐴) → 𝐵 ∈ 𝑊)
esum2d.4	⊢ ((𝜑 ∧ (𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐵)) → 𝐶 ∈ (0[,]+∞))
esum2dlem.e	⊢ (𝜑 → 𝐴 ∈ Fin)

Assertion

Ref	Expression
esum2dlem	⊢ (𝜑 → Σ*𝑗 ∈ 𝐴Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)𝐹)

Distinct variable groups:   𝑗,𝑘,𝐴,𝑧   𝑧,𝐶   𝐵,𝑘,𝑧   𝑗,𝐹   𝑗,𝑊,𝑘   𝜑,𝑗,𝑘,𝑧

Allowed substitution hints:   𝐵(𝑗)   𝐶(𝑗,𝑘)   𝐹(𝑧,𝑘)   𝑉(𝑧,𝑗,𝑘)   𝑊(𝑧)

Proof of Theorem esum2dlem

Dummy variables 𝑖 𝑙 𝑡 𝑎 𝑏 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		esumeq1 31668	. . 3 ⊢ (𝑎 = ∅ → Σ*𝑗 ∈ 𝑎Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑗 ∈ ∅Σ*𝑘 ∈ 𝐵𝐶)
2		nfv 1922	. . . 4 ⊢ Ⅎ𝑧 𝑎 = ∅
3		iuneq1 4906	. . . 4 ⊢ (𝑎 = ∅ → ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵) = ∪ 𝑗 ∈ ∅ ({𝑗} × 𝐵))
4	2, 3	esumeq1d 31669	. . 3 ⊢ (𝑎 = ∅ → Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵)𝐹 = Σ*𝑧 ∈ ∪ 𝑗 ∈ ∅ ({𝑗} × 𝐵)𝐹)
5	1, 4	eqeq12d 2752	. 2 ⊢ (𝑎 = ∅ → (Σ*𝑗 ∈ 𝑎Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵)𝐹 ↔ Σ*𝑗 ∈ ∅Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ∪ 𝑗 ∈ ∅ ({𝑗} × 𝐵)𝐹))
6		esumeq1 31668	. . 3 ⊢ (𝑎 = 𝑏 → Σ*𝑗 ∈ 𝑎Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑗 ∈ 𝑏Σ*𝑘 ∈ 𝐵𝐶)
7		nfv 1922	. . . 4 ⊢ Ⅎ𝑧 𝑎 = 𝑏
8		iuneq1 4906	. . . 4 ⊢ (𝑎 = 𝑏 → ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵) = ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵))
9	7, 8	esumeq1d 31669	. . 3 ⊢ (𝑎 = 𝑏 → Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵)𝐹 = Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)𝐹)
10	6, 9	eqeq12d 2752	. 2 ⊢ (𝑎 = 𝑏 → (Σ*𝑗 ∈ 𝑎Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵)𝐹 ↔ Σ*𝑗 ∈ 𝑏Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)𝐹))
11		esumeq1 31668	. . 3 ⊢ (𝑎 = (𝑏 ∪ {𝑙}) → Σ*𝑗 ∈ 𝑎Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑗 ∈ (𝑏 ∪ {𝑙})Σ*𝑘 ∈ 𝐵𝐶)
12		nfv 1922	. . . 4 ⊢ Ⅎ𝑧 𝑎 = (𝑏 ∪ {𝑙})
13		iuneq1 4906	. . . 4 ⊢ (𝑎 = (𝑏 ∪ {𝑙}) → ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵) = ∪ 𝑗 ∈ (𝑏 ∪ {𝑙})({𝑗} × 𝐵))
14	12, 13	esumeq1d 31669	. . 3 ⊢ (𝑎 = (𝑏 ∪ {𝑙}) → Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵)𝐹 = Σ*𝑧 ∈ ∪ 𝑗 ∈ (𝑏 ∪ {𝑙})({𝑗} × 𝐵)𝐹)
15	11, 14	eqeq12d 2752	. 2 ⊢ (𝑎 = (𝑏 ∪ {𝑙}) → (Σ*𝑗 ∈ 𝑎Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵)𝐹 ↔ Σ*𝑗 ∈ (𝑏 ∪ {𝑙})Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ∪ 𝑗 ∈ (𝑏 ∪ {𝑙})({𝑗} × 𝐵)𝐹))
16		esumeq1 31668	. . 3 ⊢ (𝑎 = 𝐴 → Σ*𝑗 ∈ 𝑎Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑗 ∈ 𝐴Σ*𝑘 ∈ 𝐵𝐶)
17		nfv 1922	. . . 4 ⊢ Ⅎ𝑧 𝑎 = 𝐴
18		iuneq1 4906	. . . 4 ⊢ (𝑎 = 𝐴 → ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵) = ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵))
19	17, 18	esumeq1d 31669	. . 3 ⊢ (𝑎 = 𝐴 → Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵)𝐹 = Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)𝐹)
20	16, 19	eqeq12d 2752	. 2 ⊢ (𝑎 = 𝐴 → (Σ*𝑗 ∈ 𝑎Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵)𝐹 ↔ Σ*𝑗 ∈ 𝐴Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)𝐹))
21		esumnul 31682	. . . 4 ⊢ Σ*𝑧 ∈ ∅𝐹 = 0
22		0iun 4957	. . . . 5 ⊢ ∪ 𝑗 ∈ ∅ ({𝑗} × 𝐵) = ∅
23		esumeq1 31668	. . . . 5 ⊢ (∪ 𝑗 ∈ ∅ ({𝑗} × 𝐵) = ∅ → Σ*𝑧 ∈ ∪ 𝑗 ∈ ∅ ({𝑗} × 𝐵)𝐹 = Σ*𝑧 ∈ ∅𝐹)
24	22, 23	ax-mp 5	. . . 4 ⊢ Σ*𝑧 ∈ ∪ 𝑗 ∈ ∅ ({𝑗} × 𝐵)𝐹 = Σ*𝑧 ∈ ∅𝐹
25		esumnul 31682	. . . 4 ⊢ Σ*𝑗 ∈ ∅Σ*𝑘 ∈ 𝐵𝐶 = 0
26	21, 24, 25	3eqtr4ri 2770	. . 3 ⊢ Σ*𝑗 ∈ ∅Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ∪ 𝑗 ∈ ∅ ({𝑗} × 𝐵)𝐹
27	26	a1i 11	. 2 ⊢ (𝜑 → Σ*𝑗 ∈ ∅Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ∪ 𝑗 ∈ ∅ ({𝑗} × 𝐵)𝐹)
28		simpr 488	. . . . 5 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ Σ*𝑗 ∈ 𝑏Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)𝐹) → Σ*𝑗 ∈ 𝑏Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)𝐹)
29		nfcsb1v 3823	. . . . . . . . 9 ⊢ Ⅎ𝑗⦋𝑙 / 𝑗⦌𝐵
30		nfcsb1v 3823	. . . . . . . . 9 ⊢ Ⅎ𝑗⦋𝑙 / 𝑗⦌𝐶
31	29, 30	nfesum2 31675	. . . . . . . 8 ⊢ Ⅎ𝑗Σ*𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵⦋𝑙 / 𝑗⦌𝐶
32		csbeq1a 3812	. . . . . . . . . 10 ⊢ (𝑗 = 𝑙 → 𝐵 = ⦋𝑙 / 𝑗⦌𝐵)
33		csbeq1a 3812	. . . . . . . . . 10 ⊢ (𝑗 = 𝑙 → 𝐶 = ⦋𝑙 / 𝑗⦌𝐶)
34	32, 33	esumeq12d 31667	. . . . . . . . 9 ⊢ (𝑗 = 𝑙 → Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵⦋𝑙 / 𝑗⦌𝐶)
35	34	adantl 485	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 = 𝑙) → Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵⦋𝑙 / 𝑗⦌𝐶)
36		simprr 773	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → 𝑙 ∈ (𝐴 ∖ 𝑏))
37	36	eldifad 3865	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → 𝑙 ∈ 𝐴)
38		esum2d.3	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝐴) → 𝐵 ∈ 𝑊)
39	38	adantlr 715	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝐴) → 𝐵 ∈ 𝑊)
40	39	ralrimiva 3095	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ∀𝑗 ∈ 𝐴 𝐵 ∈ 𝑊)
41		rspcsbela 4336	. . . . . . . . . 10 ⊢ ((𝑙 ∈ 𝐴 ∧ ∀𝑗 ∈ 𝐴 𝐵 ∈ 𝑊) → ⦋𝑙 / 𝑗⦌𝐵 ∈ 𝑊)
42	37, 40, 41	syl2anc 587	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ⦋𝑙 / 𝑗⦌𝐵 ∈ 𝑊)
43		simpll 767	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵) → 𝜑)
44	37	adantr 484	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵) → 𝑙 ∈ 𝐴)
45		simpr 488	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵) → 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵)
46		esum2d.4	. . . . . . . . . . . . . . 15 ⊢ ((𝜑 ∧ (𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐵)) → 𝐶 ∈ (0[,]+∞))
47	46	ex 416	. . . . . . . . . . . . . 14 ⊢ (𝜑 → ((𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐵) → 𝐶 ∈ (0[,]+∞)))
48	47	sbcimdv 3756	. . . . . . . . . . . . 13 ⊢ (𝜑 → ([𝑙 / 𝑗](𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐵) → [𝑙 / 𝑗]𝐶 ∈ (0[,]+∞)))
49		sbcan 3735	. . . . . . . . . . . . . 14 ⊢ ([𝑙 / 𝑗](𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐵) ↔ ([𝑙 / 𝑗]𝑗 ∈ 𝐴 ∧ [𝑙 / 𝑗]𝑘 ∈ 𝐵))
50		sbcel1v 3753	. . . . . . . . . . . . . . 15 ⊢ ([𝑙 / 𝑗]𝑗 ∈ 𝐴 ↔ 𝑙 ∈ 𝐴)
51		sbcel2 4316	. . . . . . . . . . . . . . 15 ⊢ ([𝑙 / 𝑗]𝑘 ∈ 𝐵 ↔ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵)
52	50, 51	anbi12i 630	. . . . . . . . . . . . . 14 ⊢ (([𝑙 / 𝑗]𝑗 ∈ 𝐴 ∧ [𝑙 / 𝑗]𝑘 ∈ 𝐵) ↔ (𝑙 ∈ 𝐴 ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵))
53	49, 52	bitri 278	. . . . . . . . . . . . 13 ⊢ ([𝑙 / 𝑗](𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐵) ↔ (𝑙 ∈ 𝐴 ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵))
54		vex 3402	. . . . . . . . . . . . . 14 ⊢ 𝑙 ∈ V
55		sbcel1g 4314	. . . . . . . . . . . . . 14 ⊢ (𝑙 ∈ V → ([𝑙 / 𝑗]𝐶 ∈ (0[,]+∞) ↔ ⦋𝑙 / 𝑗⦌𝐶 ∈ (0[,]+∞)))
56	54, 55	ax-mp 5	. . . . . . . . . . . . 13 ⊢ ([𝑙 / 𝑗]𝐶 ∈ (0[,]+∞) ↔ ⦋𝑙 / 𝑗⦌𝐶 ∈ (0[,]+∞))
57	48, 53, 56	3imtr3g 298	. . . . . . . . . . . 12 ⊢ (𝜑 → ((𝑙 ∈ 𝐴 ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵) → ⦋𝑙 / 𝑗⦌𝐶 ∈ (0[,]+∞)))
58	57	imp 410	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝑙 ∈ 𝐴 ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵)) → ⦋𝑙 / 𝑗⦌𝐶 ∈ (0[,]+∞))
59	43, 44, 45, 58	syl12anc 837	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵) → ⦋𝑙 / 𝑗⦌𝐶 ∈ (0[,]+∞))
60	59	ralrimiva 3095	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ∀𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵⦋𝑙 / 𝑗⦌𝐶 ∈ (0[,]+∞))
61		nfcv 2897	. . . . . . . . . 10 ⊢ Ⅎ𝑘⦋𝑙 / 𝑗⦌𝐵
62	61	esumcl 31664	. . . . . . . . 9 ⊢ ((⦋𝑙 / 𝑗⦌𝐵 ∈ 𝑊 ∧ ∀𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵⦋𝑙 / 𝑗⦌𝐶 ∈ (0[,]+∞)) → Σ*𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵⦋𝑙 / 𝑗⦌𝐶 ∈ (0[,]+∞))
63	42, 60, 62	syl2anc 587	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → Σ*𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵⦋𝑙 / 𝑗⦌𝐶 ∈ (0[,]+∞))
64	31, 35, 36, 63	esumsnf 31698	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → Σ*𝑗 ∈ {𝑙}Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵⦋𝑙 / 𝑗⦌𝐶)
65		esum2d.0	. . . . . . . . 9 ⊢ Ⅎ𝑘𝐹
66		nfv 1922	. . . . . . . . 9 ⊢ Ⅎ𝑘(𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏)))
67		nfv 1922	. . . . . . . . . . 11 ⊢ Ⅎ𝑗 𝑧 = ⟨𝑙, 𝑘⟩
68	30	nfeq2 2914	. . . . . . . . . . 11 ⊢ Ⅎ𝑗 𝐹 = ⦋𝑙 / 𝑗⦌𝐶
69	67, 68	nfim 1904	. . . . . . . . . 10 ⊢ Ⅎ𝑗(𝑧 = ⟨𝑙, 𝑘⟩ → 𝐹 = ⦋𝑙 / 𝑗⦌𝐶)
70		opeq1 4770	. . . . . . . . . . . 12 ⊢ (𝑗 = 𝑙 → ⟨𝑗, 𝑘⟩ = ⟨𝑙, 𝑘⟩)
71	70	eqeq2d 2747	. . . . . . . . . . 11 ⊢ (𝑗 = 𝑙 → (𝑧 = ⟨𝑗, 𝑘⟩ ↔ 𝑧 = ⟨𝑙, 𝑘⟩))
72	33	eqeq2d 2747	. . . . . . . . . . 11 ⊢ (𝑗 = 𝑙 → (𝐹 = 𝐶 ↔ 𝐹 = ⦋𝑙 / 𝑗⦌𝐶))
73	71, 72	imbi12d 348	. . . . . . . . . 10 ⊢ (𝑗 = 𝑙 → ((𝑧 = ⟨𝑗, 𝑘⟩ → 𝐹 = 𝐶) ↔ (𝑧 = ⟨𝑙, 𝑘⟩ → 𝐹 = ⦋𝑙 / 𝑗⦌𝐶)))
74		esum2d.1	. . . . . . . . . 10 ⊢ (𝑧 = ⟨𝑗, 𝑘⟩ → 𝐹 = 𝐶)
75	69, 73, 74	chvarfv 2240	. . . . . . . . 9 ⊢ (𝑧 = ⟨𝑙, 𝑘⟩ → 𝐹 = ⦋𝑙 / 𝑗⦌𝐶)
76		vsnid 4564	. . . . . . . . . . . . . . . . 17 ⊢ 𝑗 ∈ {𝑗}
77	76	a1i 11	. . . . . . . . . . . . . . . 16 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝐴) ∧ 𝑘 ∈ 𝐵) → 𝑗 ∈ {𝑗})
78		simpr 488	. . . . . . . . . . . . . . . 16 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝐴) ∧ 𝑘 ∈ 𝐵) → 𝑘 ∈ 𝐵)
79	77, 78	opelxpd 5574	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝐴) ∧ 𝑘 ∈ 𝐵) → ⟨𝑗, 𝑘⟩ ∈ ({𝑗} × 𝐵))
80		xp2nd 7772	. . . . . . . . . . . . . . . 16 ⊢ (𝑧 ∈ ({𝑗} × 𝐵) → (2nd ‘𝑧) ∈ 𝐵)
81		xp1st 7771	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑧 ∈ ({𝑗} × 𝐵) → (1st ‘𝑧) ∈ {𝑗})
82		fvex 6708	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (1st ‘𝑧) ∈ V
83	82	elsn 4542	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((1st ‘𝑧) ∈ {𝑗} ↔ (1st ‘𝑧) = 𝑗)
84	81, 83	sylib 221	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑧 ∈ ({𝑗} × 𝐵) → (1st ‘𝑧) = 𝑗)
85		eqop 7781	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑧 ∈ ({𝑗} × 𝐵) → (𝑧 = ⟨𝑗, 𝑘⟩ ↔ ((1st ‘𝑧) = 𝑗 ∧ (2nd ‘𝑧) = 𝑘)))
86	84, 85	mpbirand 707	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑧 ∈ ({𝑗} × 𝐵) → (𝑧 = ⟨𝑗, 𝑘⟩ ↔ (2nd ‘𝑧) = 𝑘))
87		eqcom 2743	. . . . . . . . . . . . . . . . . . 19 ⊢ ((2nd ‘𝑧) = 𝑘 ↔ 𝑘 = (2nd ‘𝑧))
88	86, 87	bitrdi 290	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑧 ∈ ({𝑗} × 𝐵) → (𝑧 = ⟨𝑗, 𝑘⟩ ↔ 𝑘 = (2nd ‘𝑧)))
89	88	ad2antlr 727	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝜑 ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) ∧ 𝑘 ∈ 𝐵) → (𝑧 = ⟨𝑗, 𝑘⟩ ↔ 𝑘 = (2nd ‘𝑧)))
90	89	ralrimiva 3095	. . . . . . . . . . . . . . . 16 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) → ∀𝑘 ∈ 𝐵 (𝑧 = ⟨𝑗, 𝑘⟩ ↔ 𝑘 = (2nd ‘𝑧)))
91		reu6i 3630	. . . . . . . . . . . . . . . 16 ⊢ (((2nd ‘𝑧) ∈ 𝐵 ∧ ∀𝑘 ∈ 𝐵 (𝑧 = ⟨𝑗, 𝑘⟩ ↔ 𝑘 = (2nd ‘𝑧))) → ∃!𝑘 ∈ 𝐵 𝑧 = ⟨𝑗, 𝑘⟩)
92	80, 90, 91	syl2an2 686	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) → ∃!𝑘 ∈ 𝐵 𝑧 = ⟨𝑗, 𝑘⟩)
93	79, 92	f1mptrn 30643	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝐴) → Fun ◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩))
94	93	ex 416	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝑗 ∈ 𝐴 → Fun ◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩)))
95	94	sbcimdv 3756	. . . . . . . . . . . 12 ⊢ (𝜑 → ([𝑙 / 𝑗]𝑗 ∈ 𝐴 → [𝑙 / 𝑗]Fun ◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩)))
96		sbcfung 6382	. . . . . . . . . . . . . 14 ⊢ (𝑙 ∈ V → ([𝑙 / 𝑗]Fun ◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) ↔ Fun ⦋𝑙 / 𝑗⦌◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩)))
97		csbcnv 5737	. . . . . . . . . . . . . . . 16 ⊢ ◡⦋𝑙 / 𝑗⦌(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) = ⦋𝑙 / 𝑗⦌◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩)
98		csbmpt12 5423	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑙 ∈ V → ⦋𝑙 / 𝑗⦌(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) = (𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⦋𝑙 / 𝑗⦌⟨𝑗, 𝑘⟩))
99		csbopg 4788	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑙 ∈ V → ⦋𝑙 / 𝑗⦌⟨𝑗, 𝑘⟩ = ⟨⦋𝑙 / 𝑗⦌𝑗, ⦋𝑙 / 𝑗⦌𝑘⟩)
100		csbvarg 4332	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑙 ∈ V → ⦋𝑙 / 𝑗⦌𝑗 = 𝑙)
101		csbconstg 3817	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑙 ∈ V → ⦋𝑙 / 𝑗⦌𝑘 = 𝑘)
102	100, 101	opeq12d 4778	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑙 ∈ V → ⟨⦋𝑙 / 𝑗⦌𝑗, ⦋𝑙 / 𝑗⦌𝑘⟩ = ⟨𝑙, 𝑘⟩)
103	99, 102	eqtrd 2771	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑙 ∈ V → ⦋𝑙 / 𝑗⦌⟨𝑗, 𝑘⟩ = ⟨𝑙, 𝑘⟩)
104	103	mpteq2dv 5136	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑙 ∈ V → (𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⦋𝑙 / 𝑗⦌⟨𝑗, 𝑘⟩) = (𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩))
105	98, 104	eqtrd 2771	. . . . . . . . . . . . . . . . 17 ⊢ (𝑙 ∈ V → ⦋𝑙 / 𝑗⦌(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) = (𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩))
106	105	cnveqd 5729	. . . . . . . . . . . . . . . 16 ⊢ (𝑙 ∈ V → ◡⦋𝑙 / 𝑗⦌(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) = ◡(𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩))
107	97, 106	eqtr3id 2785	. . . . . . . . . . . . . . 15 ⊢ (𝑙 ∈ V → ⦋𝑙 / 𝑗⦌◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) = ◡(𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩))
108	107	funeqd 6380	. . . . . . . . . . . . . 14 ⊢ (𝑙 ∈ V → (Fun ⦋𝑙 / 𝑗⦌◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) ↔ Fun ◡(𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩)))
109	96, 108	bitrd 282	. . . . . . . . . . . . 13 ⊢ (𝑙 ∈ V → ([𝑙 / 𝑗]Fun ◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) ↔ Fun ◡(𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩)))
110	54, 109	ax-mp 5	. . . . . . . . . . . 12 ⊢ ([𝑙 / 𝑗]Fun ◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) ↔ Fun ◡(𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩))
111	95, 50, 110	3imtr3g 298	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑙 ∈ 𝐴 → Fun ◡(𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩)))
112	111	imp 410	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑙 ∈ 𝐴) → Fun ◡(𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩))
113	37, 112	syldan 594	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → Fun ◡(𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩))
114		vsnid 4564	. . . . . . . . . . 11 ⊢ 𝑙 ∈ {𝑙}
115	114	a1i 11	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵) → 𝑙 ∈ {𝑙})
116	115, 45	opelxpd 5574	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵) → ⟨𝑙, 𝑘⟩ ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵))
117	65, 66, 61, 75, 42, 113, 59, 116	esumc 31685	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → Σ*𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵⦋𝑙 / 𝑗⦌𝐶 = Σ*𝑧 ∈ {𝑡 ∣ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩}𝐹)
118		nfab1 2899	. . . . . . . . . 10 ⊢ Ⅎ𝑡{𝑡 ∣ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩}
119		nfcv 2897	. . . . . . . . . 10 ⊢ Ⅎ𝑡({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)
120		opeq1 4770	. . . . . . . . . . . . . 14 ⊢ (𝑖 = 𝑙 → ⟨𝑖, 𝑘⟩ = ⟨𝑙, 𝑘⟩)
121	120	eqeq2d 2747	. . . . . . . . . . . . 13 ⊢ (𝑖 = 𝑙 → (𝑡 = ⟨𝑖, 𝑘⟩ ↔ 𝑡 = ⟨𝑙, 𝑘⟩))
122	121	rexbidv 3206	. . . . . . . . . . . 12 ⊢ (𝑖 = 𝑙 → (∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑖, 𝑘⟩ ↔ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩))
123	54, 122	rexsn 4584	. . . . . . . . . . 11 ⊢ (∃𝑖 ∈ {𝑙}∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑖, 𝑘⟩ ↔ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩)
124		elxp2 5560	. . . . . . . . . . 11 ⊢ (𝑡 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵) ↔ ∃𝑖 ∈ {𝑙}∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑖, 𝑘⟩)
125		abid 2718	. . . . . . . . . . 11 ⊢ (𝑡 ∈ {𝑡 ∣ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩} ↔ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩)
126	123, 124, 125	3bitr4ri 307	. . . . . . . . . 10 ⊢ (𝑡 ∈ {𝑡 ∣ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩} ↔ 𝑡 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵))
127	118, 119, 126	eqri 3907	. . . . . . . . 9 ⊢ {𝑡 ∣ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩} = ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)
128		esumeq1 31668	. . . . . . . . 9 ⊢ ({𝑡 ∣ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩} = ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵) → Σ*𝑧 ∈ {𝑡 ∣ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩}𝐹 = Σ*𝑧 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)𝐹)
129	127, 128	ax-mp 5	. . . . . . . 8 ⊢ Σ*𝑧 ∈ {𝑡 ∣ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩}𝐹 = Σ*𝑧 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)𝐹
130	117, 129	eqtrdi 2787	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → Σ*𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵⦋𝑙 / 𝑗⦌𝐶 = Σ*𝑧 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)𝐹)
131	64, 130	eqtrd 2771	. . . . . 6 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → Σ*𝑗 ∈ {𝑙}Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)𝐹)
132	131	adantr 484	. . . . 5 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ Σ*𝑗 ∈ 𝑏Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)𝐹) → Σ*𝑗 ∈ {𝑙}Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)𝐹)
133	28, 132	oveq12d 7209	. . . 4 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ Σ*𝑗 ∈ 𝑏Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)𝐹) → (Σ*𝑗 ∈ 𝑏Σ*𝑘 ∈ 𝐵𝐶 +𝑒 Σ*𝑗 ∈ {𝑙}Σ*𝑘 ∈ 𝐵𝐶) = (Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)𝐹 +𝑒 Σ*𝑧 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)𝐹))
134		nfv 1922	. . . . . 6 ⊢ Ⅎ𝑗(𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏)))
135		nfcv 2897	. . . . . 6 ⊢ Ⅎ𝑗𝑏
136		nfcv 2897	. . . . . 6 ⊢ Ⅎ𝑗{𝑙}
137		vex 3402	. . . . . . 7 ⊢ 𝑏 ∈ V
138	137	a1i 11	. . . . . 6 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → 𝑏 ∈ V)
139		snex 5309	. . . . . . 7 ⊢ {𝑙} ∈ V
140	139	a1i 11	. . . . . 6 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → {𝑙} ∈ V)
141	36	eldifbd 3866	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ¬ 𝑙 ∈ 𝑏)
142		disjsn 4613	. . . . . . 7 ⊢ ((𝑏 ∩ {𝑙}) = ∅ ↔ ¬ 𝑙 ∈ 𝑏)
143	141, 142	sylibr 237	. . . . . 6 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → (𝑏 ∩ {𝑙}) = ∅)
144		simpll 767	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → 𝜑)
145		simprl 771	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → 𝑏 ⊆ 𝐴)
146	145	sselda 3887	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → 𝑗 ∈ 𝐴)
147	46	anassrs 471	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝐴) ∧ 𝑘 ∈ 𝐵) → 𝐶 ∈ (0[,]+∞))
148	147	ralrimiva 3095	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝐴) → ∀𝑘 ∈ 𝐵 𝐶 ∈ (0[,]+∞))
149		nfcv 2897	. . . . . . . . 9 ⊢ Ⅎ𝑘𝐵
150	149	esumcl 31664	. . . . . . . 8 ⊢ ((𝐵 ∈ 𝑊 ∧ ∀𝑘 ∈ 𝐵 𝐶 ∈ (0[,]+∞)) → Σ*𝑘 ∈ 𝐵𝐶 ∈ (0[,]+∞))
151	38, 148, 150	syl2anc 587	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝐴) → Σ*𝑘 ∈ 𝐵𝐶 ∈ (0[,]+∞))
152	144, 146, 151	syl2anc 587	. . . . . 6 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → Σ*𝑘 ∈ 𝐵𝐶 ∈ (0[,]+∞))
153		simpll 767	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ {𝑙}) → 𝜑)
154	37	snssd 4708	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → {𝑙} ⊆ 𝐴)
155	154	sselda 3887	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ {𝑙}) → 𝑗 ∈ 𝐴)
156	153, 155, 151	syl2anc 587	. . . . . 6 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ {𝑙}) → Σ*𝑘 ∈ 𝐵𝐶 ∈ (0[,]+∞))
157	134, 135, 136, 138, 140, 143, 152, 156	esumsplit 31687	. . . . 5 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → Σ*𝑗 ∈ (𝑏 ∪ {𝑙})Σ*𝑘 ∈ 𝐵𝐶 = (Σ*𝑗 ∈ 𝑏Σ*𝑘 ∈ 𝐵𝐶 +𝑒 Σ*𝑗 ∈ {𝑙}Σ*𝑘 ∈ 𝐵𝐶))
158	157	adantr 484	. . . 4 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ Σ*𝑗 ∈ 𝑏Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)𝐹) → Σ*𝑗 ∈ (𝑏 ∪ {𝑙})Σ*𝑘 ∈ 𝐵𝐶 = (Σ*𝑗 ∈ 𝑏Σ*𝑘 ∈ 𝐵𝐶 +𝑒 Σ*𝑗 ∈ {𝑙}Σ*𝑘 ∈ 𝐵𝐶))
159		iunxun 4988	. . . . . . . 8 ⊢ ∪ 𝑗 ∈ (𝑏 ∪ {𝑙})({𝑗} × 𝐵) = (∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∪ ∪ 𝑗 ∈ {𝑙} ({𝑗} × 𝐵))
160	136, 29	nfxp 5569	. . . . . . . . . . 11 ⊢ Ⅎ𝑗({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)
161		sneq 4537	. . . . . . . . . . . 12 ⊢ (𝑗 = 𝑙 → {𝑗} = {𝑙})
162	161, 32	xpeq12d 5567	. . . . . . . . . . 11 ⊢ (𝑗 = 𝑙 → ({𝑗} × 𝐵) = ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵))
163	160, 162	iunxsngf 4986	. . . . . . . . . 10 ⊢ (𝑙 ∈ V → ∪ 𝑗 ∈ {𝑙} ({𝑗} × 𝐵) = ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵))
164	54, 163	ax-mp 5	. . . . . . . . 9 ⊢ ∪ 𝑗 ∈ {𝑙} ({𝑗} × 𝐵) = ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)
165	164	uneq2i 4060	. . . . . . . 8 ⊢ (∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∪ ∪ 𝑗 ∈ {𝑙} ({𝑗} × 𝐵)) = (∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∪ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵))
166	159, 165	eqtri 2759	. . . . . . 7 ⊢ ∪ 𝑗 ∈ (𝑏 ∪ {𝑙})({𝑗} × 𝐵) = (∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∪ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵))
167		esumeq1 31668	. . . . . . 7 ⊢ (∪ 𝑗 ∈ (𝑏 ∪ {𝑙})({𝑗} × 𝐵) = (∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∪ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)) → Σ*𝑧 ∈ ∪ 𝑗 ∈ (𝑏 ∪ {𝑙})({𝑗} × 𝐵)𝐹 = Σ*𝑧 ∈ (∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∪ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵))𝐹)
168	166, 167	ax-mp 5	. . . . . 6 ⊢ Σ*𝑧 ∈ ∪ 𝑗 ∈ (𝑏 ∪ {𝑙})({𝑗} × 𝐵)𝐹 = Σ*𝑧 ∈ (∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∪ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵))𝐹
169		nfv 1922	. . . . . . 7 ⊢ Ⅎ𝑧(𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏)))
170		nfcv 2897	. . . . . . 7 ⊢ Ⅎ𝑧∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)
171		nfcv 2897	. . . . . . 7 ⊢ Ⅎ𝑧({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)
172		snex 5309	. . . . . . . . . 10 ⊢ {𝑗} ∈ V
173	146, 39	syldan 594	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → 𝐵 ∈ 𝑊)
174		xpexg 7513	. . . . . . . . . 10 ⊢ (({𝑗} ∈ V ∧ 𝐵 ∈ 𝑊) → ({𝑗} × 𝐵) ∈ V)
175	172, 173, 174	sylancr 590	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → ({𝑗} × 𝐵) ∈ V)
176	175	ralrimiva 3095	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ∀𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∈ V)
177		iunexg 7714	. . . . . . . 8 ⊢ ((𝑏 ∈ V ∧ ∀𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∈ V) → ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∈ V)
178	137, 176, 177	sylancr 590	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∈ V)
179		xpexg 7513	. . . . . . . 8 ⊢ (({𝑙} ∈ V ∧ ⦋𝑙 / 𝑗⦌𝐵 ∈ 𝑊) → ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵) ∈ V)
180	139, 42, 179	sylancr 590	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵) ∈ V)
181		simpr 488	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → 𝑗 ∈ 𝑏)
182	141	adantr 484	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → ¬ 𝑙 ∈ 𝑏)
183		nelne2 3029	. . . . . . . . . . 11 ⊢ ((𝑗 ∈ 𝑏 ∧ ¬ 𝑙 ∈ 𝑏) → 𝑗 ≠ 𝑙)
184	181, 182, 183	syl2anc 587	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → 𝑗 ≠ 𝑙)
185		disjsn2 4614	. . . . . . . . . 10 ⊢ (𝑗 ≠ 𝑙 → ({𝑗} ∩ {𝑙}) = ∅)
186		xpdisj1 6004	. . . . . . . . . 10 ⊢ (({𝑗} ∩ {𝑙}) = ∅ → (({𝑗} × 𝐵) ∩ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)) = ∅)
187	184, 185, 186	3syl 18	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → (({𝑗} × 𝐵) ∩ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)) = ∅)
188	187	iuneq2dv 4914	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ∪ 𝑗 ∈ 𝑏 (({𝑗} × 𝐵) ∩ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)) = ∪ 𝑗 ∈ 𝑏 ∅)
189	160	iunin1f 30570	. . . . . . . 8 ⊢ ∪ 𝑗 ∈ 𝑏 (({𝑗} × 𝐵) ∩ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)) = (∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∩ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵))
190		iun0 4956	. . . . . . . 8 ⊢ ∪ 𝑗 ∈ 𝑏 ∅ = ∅
191	188, 189, 190	3eqtr3g 2794	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → (∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∩ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)) = ∅)
192		simpll 767	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)) → 𝜑)
193		iunss1 4904	. . . . . . . . . 10 ⊢ (𝑏 ⊆ 𝐴 → ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ⊆ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵))
194	145, 193	syl 17	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ⊆ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵))
195	194	sselda 3887	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)) → 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵))
196		nfv 1922	. . . . . . . . . 10 ⊢ Ⅎ𝑗𝜑
197		nfiu1 4924	. . . . . . . . . . 11 ⊢ Ⅎ𝑗∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)
198	197	nfcri 2884	. . . . . . . . . 10 ⊢ Ⅎ𝑗 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)
199	196, 198	nfan 1907	. . . . . . . . 9 ⊢ Ⅎ𝑗(𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵))
200		nfv 1922	. . . . . . . . . 10 ⊢ Ⅎ𝑘(((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵))
201		nfcv 2897	. . . . . . . . . . 11 ⊢ Ⅎ𝑘(0[,]+∞)
202	65, 201	nfel 2911	. . . . . . . . . 10 ⊢ Ⅎ𝑘 𝐹 ∈ (0[,]+∞)
203	74	adantl 485	. . . . . . . . . . 11 ⊢ ((((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) ∧ 𝑘 ∈ 𝐵) ∧ 𝑧 = ⟨𝑗, 𝑘⟩) → 𝐹 = 𝐶)
204		simp-5l 785	. . . . . . . . . . . 12 ⊢ ((((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) ∧ 𝑘 ∈ 𝐵) ∧ 𝑧 = ⟨𝑗, 𝑘⟩) → 𝜑)
205		simp-4r 784	. . . . . . . . . . . 12 ⊢ ((((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) ∧ 𝑘 ∈ 𝐵) ∧ 𝑧 = ⟨𝑗, 𝑘⟩) → 𝑗 ∈ 𝐴)
206		simplr 769	. . . . . . . . . . . 12 ⊢ ((((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) ∧ 𝑘 ∈ 𝐵) ∧ 𝑧 = ⟨𝑗, 𝑘⟩) → 𝑘 ∈ 𝐵)
207	204, 205, 206, 46	syl12anc 837	. . . . . . . . . . 11 ⊢ ((((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) ∧ 𝑘 ∈ 𝐵) ∧ 𝑧 = ⟨𝑗, 𝑘⟩) → 𝐶 ∈ (0[,]+∞))
208	203, 207	eqeltrd 2831	. . . . . . . . . 10 ⊢ ((((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) ∧ 𝑘 ∈ 𝐵) ∧ 𝑧 = ⟨𝑗, 𝑘⟩) → 𝐹 ∈ (0[,]+∞))
209		elsnxp 6134	. . . . . . . . . . . 12 ⊢ (𝑗 ∈ 𝐴 → (𝑧 ∈ ({𝑗} × 𝐵) ↔ ∃𝑘 ∈ 𝐵 𝑧 = ⟨𝑗, 𝑘⟩))
210	209	biimpa 480	. . . . . . . . . . 11 ⊢ ((𝑗 ∈ 𝐴 ∧ 𝑧 ∈ ({𝑗} × 𝐵)) → ∃𝑘 ∈ 𝐵 𝑧 = ⟨𝑗, 𝑘⟩)
211	210	adantll 714	. . . . . . . . . 10 ⊢ ((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) → ∃𝑘 ∈ 𝐵 𝑧 = ⟨𝑗, 𝑘⟩)
212	200, 202, 208, 211	r19.29af2 3238	. . . . . . . . 9 ⊢ ((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) → 𝐹 ∈ (0[,]+∞))
213		simpr 488	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) → 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵))
214		eliun 4894	. . . . . . . . . 10 ⊢ (𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵) ↔ ∃𝑗 ∈ 𝐴 𝑧 ∈ ({𝑗} × 𝐵))
215	213, 214	sylib 221	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) → ∃𝑗 ∈ 𝐴 𝑧 ∈ ({𝑗} × 𝐵))
216	199, 212, 215	r19.29af 3239	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) → 𝐹 ∈ (0[,]+∞))
217	192, 195, 216	syl2anc 587	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)) → 𝐹 ∈ (0[,]+∞))
218		simpll 767	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑧 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)) → 𝜑)
219		nfcv 2897	. . . . . . . . . . 11 ⊢ Ⅎ𝑗𝐴
220		nfcv 2897	. . . . . . . . . . 11 ⊢ Ⅎ𝑗𝑙
221	219, 220, 160, 162	ssiun2sf 30572	. . . . . . . . . 10 ⊢ (𝑙 ∈ 𝐴 → ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵) ⊆ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵))
222	37, 221	syl 17	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵) ⊆ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵))
223	222	sselda 3887	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑧 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)) → 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵))
224	218, 223, 216	syl2anc 587	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑧 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)) → 𝐹 ∈ (0[,]+∞))
225	169, 170, 171, 178, 180, 191, 217, 224	esumsplit 31687	. . . . . 6 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → Σ*𝑧 ∈ (∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∪ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵))𝐹 = (Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)𝐹 +𝑒 Σ*𝑧 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)𝐹))
226	168, 225	syl5eq 2783	. . . . 5 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → Σ*𝑧 ∈ ∪ 𝑗 ∈ (𝑏 ∪ {𝑙})({𝑗} × 𝐵)𝐹 = (Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)𝐹 +𝑒 Σ*𝑧 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)𝐹))
227	226	adantr 484	. . . 4 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ Σ*𝑗 ∈ 𝑏Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)𝐹) → Σ*𝑧 ∈ ∪ 𝑗 ∈ (𝑏 ∪ {𝑙})({𝑗} × 𝐵)𝐹 = (Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)𝐹 +𝑒 Σ*𝑧 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)𝐹))
228	133, 158, 227	3eqtr4d 2781	. . 3 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ Σ*𝑗 ∈ 𝑏Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)𝐹) → Σ*𝑗 ∈ (𝑏 ∪ {𝑙})Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ∪ 𝑗 ∈ (𝑏 ∪ {𝑙})({𝑗} × 𝐵)𝐹)
229	228	ex 416	. 2 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → (Σ*𝑗 ∈ 𝑏Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)𝐹 → Σ*𝑗 ∈ (𝑏 ∪ {𝑙})Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ∪ 𝑗 ∈ (𝑏 ∪ {𝑙})({𝑗} × 𝐵)𝐹))
230		esum2dlem.e	. 2 ⊢ (𝜑 → 𝐴 ∈ Fin)
231	5, 10, 15, 20, 27, 229, 230	findcard2d 8822	1 ⊢ (𝜑 → Σ*𝑗 ∈ 𝐴Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)𝐹)

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 209   ∧ wa 399   = wceq 1543   ∈ wcel 2112  {cab 2714  Ⅎwnfc 2877   ≠ wne 2932  ∀wral 3051  ∃wrex 3052  ∃!wreu 3053  Vcvv 3398  [wsbc 3683  ⦋csb 3798   ∖ cdif 3850   ∪ cun 3851   ∩ cin 3852   ⊆ wss 3853  ∅c0 4223  {csn 4527  ⟨cop 4533  ∪ ciun 4890   ↦ cmpt 5120   × cxp 5534  ^◡ccnv 5535  Fun wfun 6352  ‘cfv 6358  (class class class)co 7191  1^st c1st 7737  2^nd c2nd 7738  Fincfn 8604  0cc0 10694  +∞cpnf 10829   +_𝑒 cxad 12667  [,]cicc 12903  Σ^*cesum 31661

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1803  ax-4 1817  ax-5 1918  ax-6 1976  ax-7 2018  ax-8 2114  ax-9 2122  ax-10 2143  ax-11 2160  ax-12 2177  ax-ext 2708  ax-rep 5164  ax-sep 5177  ax-nul 5184  ax-pow 5243  ax-pr 5307  ax-un 7501  ax-inf2 9234  ax-cnex 10750  ax-resscn 10751  ax-1cn 10752  ax-icn 10753  ax-addcl 10754  ax-addrcl 10755  ax-mulcl 10756  ax-mulrcl 10757  ax-mulcom 10758  ax-addass 10759  ax-mulass 10760  ax-distr 10761  ax-i2m1 10762  ax-1ne0 10763  ax-1rid 10764  ax-rnegex 10765  ax-rrecex 10766  ax-cnre 10767  ax-pre-lttri 10768  ax-pre-lttrn 10769  ax-pre-ltadd 10770  ax-pre-mulgt0 10771  ax-pre-sup 10772  ax-addf 10773  ax-mulf 10774

This theorem depends on definitions:  df-bi 210  df-an 400  df-or 848  df-3or 1090  df-3an 1091  df-tru 1546  df-fal 1556  df-ex 1788  df-nf 1792  df-sb 2073  df-mo 2539  df-eu 2568  df-clab 2715  df-cleq 2728  df-clel 2809  df-nfc 2879  df-ne 2933  df-nel 3037  df-ral 3056  df-rex 3057  df-reu 3058  df-rmo 3059  df-rab 3060  df-v 3400  df-sbc 3684  df-csb 3799  df-dif 3856  df-un 3858  df-in 3860  df-ss 3870  df-pss 3872  df-nul 4224  df-if 4426  df-pw 4501  df-sn 4528  df-pr 4530  df-tp 4532  df-op 4534  df-uni 4806  df-int 4846  df-iun 4892  df-iin 4893  df-br 5040  df-opab 5102  df-mpt 5121  df-tr 5147  df-id 5440  df-eprel 5445  df-po 5453  df-so 5454  df-fr 5494  df-se 5495  df-we 5496  df-xp 5542  df-rel 5543  df-cnv 5544  df-co 5545  df-dm 5546  df-rn 5547  df-res 5548  df-ima 5549  df-pred 6140  df-ord 6194  df-on 6195  df-lim 6196  df-suc 6197  df-iota 6316  df-fun 6360  df-fn 6361  df-f 6362  df-f1 6363  df-fo 6364  df-f1o 6365  df-fv 6366  df-isom 6367  df-riota 7148  df-ov 7194  df-oprab 7195  df-mpo 7196  df-of 7447  df-om 7623  df-1st 7739  df-2nd 7740  df-supp 7882  df-wrecs 8025  df-recs 8086  df-rdg 8124  df-1o 8180  df-2o 8181  df-er 8369  df-map 8488  df-pm 8489  df-ixp 8557  df-en 8605  df-dom 8606  df-sdom 8607  df-fin 8608  df-fsupp 8964  df-fi 9005  df-sup 9036  df-inf 9037  df-oi 9104  df-card 9520  df-pnf 10834  df-mnf 10835  df-xr 10836  df-ltxr 10837  df-le 10838  df-sub 11029  df-neg 11030  df-div 11455  df-nn 11796  df-2 11858  df-3 11859  df-4 11860  df-5 11861  df-6 11862  df-7 11863  df-8 11864  df-9 11865  df-n0 12056  df-z 12142  df-dec 12259  df-uz 12404  df-q 12510  df-rp 12552  df-xneg 12669  df-xadd 12670  df-xmul 12671  df-ioo 12904  df-ioc 12905  df-ico 12906  df-icc 12907  df-fz 13061  df-fzo 13204  df-fl 13332  df-mod 13408  df-seq 13540  df-exp 13601  df-fac 13805  df-bc 13834  df-hash 13862  df-shft 14595  df-cj 14627  df-re 14628  df-im 14629  df-sqrt 14763  df-abs 14764  df-limsup 14997  df-clim 15014  df-rlim 15015  df-sum 15215  df-ef 15592  df-sin 15594  df-cos 15595  df-pi 15597  df-struct 16668  df-ndx 16669  df-slot 16670  df-base 16672  df-sets 16673  df-ress 16674  df-plusg 16762  df-mulr 16763  df-starv 16764  df-sca 16765  df-vsca 16766  df-ip 16767  df-tset 16768  df-ple 16769  df-ds 16771  df-unif 16772  df-hom 16773  df-cco 16774  df-rest 16881  df-topn 16882  df-0g 16900  df-gsum 16901  df-topgen 16902  df-pt 16903  df-prds 16906  df-ordt 16960  df-xrs 16961  df-qtop 16966  df-imas 16967  df-xps 16969  df-mre 17043  df-mrc 17044  df-acs 17046  df-ps 18026  df-tsr 18027  df-plusf 18067  df-mgm 18068  df-sgrp 18117  df-mnd 18128  df-mhm 18172  df-submnd 18173  df-grp 18322  df-minusg 18323  df-sbg 18324  df-mulg 18443  df-subg 18494  df-cntz 18665  df-cmn 19126  df-abl 19127  df-mgp 19459  df-ur 19471  df-ring 19518  df-cring 19519  df-subrg 19752  df-abv 19807  df-lmod 19855  df-scaf 19856  df-sra 20163  df-rgmod 20164  df-psmet 20309  df-xmet 20310  df-met 20311  df-bl 20312  df-mopn 20313  df-fbas 20314  df-fg 20315  df-cnfld 20318  df-top 21745  df-topon 21762  df-topsp 21784  df-bases 21797  df-cld 21870  df-ntr 21871  df-cls 21872  df-nei 21949  df-lp 21987  df-perf 21988  df-cn 22078  df-cnp 22079  df-haus 22166  df-tx 22413  df-hmeo 22606  df-fil 22697  df-fm 22789  df-flim 22790  df-flf 22791  df-tmd 22923  df-tgp 22924  df-tsms 22978  df-trg 23011  df-xms 23172  df-ms 23173  df-tms 23174  df-nm 23434  df-ngp 23435  df-nrg 23437  df-nlm 23438  df-ii 23728  df-cncf 23729  df-limc 24717  df-dv 24718  df-log 25399  df-esum 31662

This theorem is referenced by:  esum2d  31727