Theorem esum2dlem 31960

Description: Lemma for esum2d 31961 (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 31902	. . 3 ⊢ (𝑎 = ∅ → Σ*𝑗 ∈ 𝑎Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑗 ∈ ∅Σ*𝑘 ∈ 𝐵𝐶)
2		nfv 1918	. . . 4 ⊢ Ⅎ𝑧 𝑎 = ∅
3		iuneq1 4937	. . . 4 ⊢ (𝑎 = ∅ → ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵) = ∪ 𝑗 ∈ ∅ ({𝑗} × 𝐵))
4	2, 3	esumeq1d 31903	. . 3 ⊢ (𝑎 = ∅ → Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵)𝐹 = Σ*𝑧 ∈ ∪ 𝑗 ∈ ∅ ({𝑗} × 𝐵)𝐹)
5	1, 4	eqeq12d 2754	. 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 31902	. . 3 ⊢ (𝑎 = 𝑏 → Σ*𝑗 ∈ 𝑎Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑗 ∈ 𝑏Σ*𝑘 ∈ 𝐵𝐶)
7		nfv 1918	. . . 4 ⊢ Ⅎ𝑧 𝑎 = 𝑏
8		iuneq1 4937	. . . 4 ⊢ (𝑎 = 𝑏 → ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵) = ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵))
9	7, 8	esumeq1d 31903	. . 3 ⊢ (𝑎 = 𝑏 → Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵)𝐹 = Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)𝐹)
10	6, 9	eqeq12d 2754	. 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 31902	. . 3 ⊢ (𝑎 = (𝑏 ∪ {𝑙}) → Σ*𝑗 ∈ 𝑎Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑗 ∈ (𝑏 ∪ {𝑙})Σ*𝑘 ∈ 𝐵𝐶)
12		nfv 1918	. . . 4 ⊢ Ⅎ𝑧 𝑎 = (𝑏 ∪ {𝑙})
13		iuneq1 4937	. . . 4 ⊢ (𝑎 = (𝑏 ∪ {𝑙}) → ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵) = ∪ 𝑗 ∈ (𝑏 ∪ {𝑙})({𝑗} × 𝐵))
14	12, 13	esumeq1d 31903	. . 3 ⊢ (𝑎 = (𝑏 ∪ {𝑙}) → Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵)𝐹 = Σ*𝑧 ∈ ∪ 𝑗 ∈ (𝑏 ∪ {𝑙})({𝑗} × 𝐵)𝐹)
15	11, 14	eqeq12d 2754	. 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 31902	. . 3 ⊢ (𝑎 = 𝐴 → Σ*𝑗 ∈ 𝑎Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑗 ∈ 𝐴Σ*𝑘 ∈ 𝐵𝐶)
17		nfv 1918	. . . 4 ⊢ Ⅎ𝑧 𝑎 = 𝐴
18		iuneq1 4937	. . . 4 ⊢ (𝑎 = 𝐴 → ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵) = ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵))
19	17, 18	esumeq1d 31903	. . 3 ⊢ (𝑎 = 𝐴 → Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵)𝐹 = Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)𝐹)
20	16, 19	eqeq12d 2754	. 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 31916	. . . 4 ⊢ Σ*𝑧 ∈ ∅𝐹 = 0
22		0iun 4988	. . . . 5 ⊢ ∪ 𝑗 ∈ ∅ ({𝑗} × 𝐵) = ∅
23		esumeq1 31902	. . . . 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 31916	. . . 4 ⊢ Σ*𝑗 ∈ ∅Σ*𝑘 ∈ 𝐵𝐶 = 0
26	21, 24, 25	3eqtr4ri 2777	. . 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 484	. . . . 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 3853	. . . . . . . . 9 ⊢ Ⅎ𝑗⦋𝑙 / 𝑗⦌𝐵
30		nfcsb1v 3853	. . . . . . . . 9 ⊢ Ⅎ𝑗⦋𝑙 / 𝑗⦌𝐶
31	29, 30	nfesum2 31909	. . . . . . . 8 ⊢ Ⅎ𝑗Σ*𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵⦋𝑙 / 𝑗⦌𝐶
32		csbeq1a 3842	. . . . . . . . . 10 ⊢ (𝑗 = 𝑙 → 𝐵 = ⦋𝑙 / 𝑗⦌𝐵)
33		csbeq1a 3842	. . . . . . . . . 10 ⊢ (𝑗 = 𝑙 → 𝐶 = ⦋𝑙 / 𝑗⦌𝐶)
34	32, 33	esumeq12d 31901	. . . . . . . . 9 ⊢ (𝑗 = 𝑙 → Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵⦋𝑙 / 𝑗⦌𝐶)
35	34	adantl 481	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 = 𝑙) → Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵⦋𝑙 / 𝑗⦌𝐶)
36		simprr 769	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → 𝑙 ∈ (𝐴 ∖ 𝑏))
37	36	eldifad 3895	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → 𝑙 ∈ 𝐴)
38		esum2d.3	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝐴) → 𝐵 ∈ 𝑊)
39	38	adantlr 711	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝐴) → 𝐵 ∈ 𝑊)
40	39	ralrimiva 3107	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ∀𝑗 ∈ 𝐴 𝐵 ∈ 𝑊)
41		rspcsbela 4366	. . . . . . . . . 10 ⊢ ((𝑙 ∈ 𝐴 ∧ ∀𝑗 ∈ 𝐴 𝐵 ∈ 𝑊) → ⦋𝑙 / 𝑗⦌𝐵 ∈ 𝑊)
42	37, 40, 41	syl2anc 583	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ⦋𝑙 / 𝑗⦌𝐵 ∈ 𝑊)
43		simpll 763	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵) → 𝜑)
44	37	adantr 480	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵) → 𝑙 ∈ 𝐴)
45		simpr 484	. . . . . . . . . . 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 412	. . . . . . . . . . . . . 14 ⊢ (𝜑 → ((𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐵) → 𝐶 ∈ (0[,]+∞)))
48	47	sbcimdv 3786	. . . . . . . . . . . . 13 ⊢ (𝜑 → ([𝑙 / 𝑗](𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐵) → [𝑙 / 𝑗]𝐶 ∈ (0[,]+∞)))
49		sbcan 3763	. . . . . . . . . . . . . 14 ⊢ ([𝑙 / 𝑗](𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐵) ↔ ([𝑙 / 𝑗]𝑗 ∈ 𝐴 ∧ [𝑙 / 𝑗]𝑘 ∈ 𝐵))
50		sbcel1v 3783	. . . . . . . . . . . . . . 15 ⊢ ([𝑙 / 𝑗]𝑗 ∈ 𝐴 ↔ 𝑙 ∈ 𝐴)
51		sbcel2 4346	. . . . . . . . . . . . . . 15 ⊢ ([𝑙 / 𝑗]𝑘 ∈ 𝐵 ↔ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵)
52	50, 51	anbi12i 626	. . . . . . . . . . . . . 14 ⊢ (([𝑙 / 𝑗]𝑗 ∈ 𝐴 ∧ [𝑙 / 𝑗]𝑘 ∈ 𝐵) ↔ (𝑙 ∈ 𝐴 ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵))
53	49, 52	bitri 274	. . . . . . . . . . . . 13 ⊢ ([𝑙 / 𝑗](𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐵) ↔ (𝑙 ∈ 𝐴 ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵))
54		vex 3426	. . . . . . . . . . . . . 14 ⊢ 𝑙 ∈ V
55		sbcel1g 4344	. . . . . . . . . . . . . 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 294	. . . . . . . . . . . 12 ⊢ (𝜑 → ((𝑙 ∈ 𝐴 ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵) → ⦋𝑙 / 𝑗⦌𝐶 ∈ (0[,]+∞)))
58	57	imp 406	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝑙 ∈ 𝐴 ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵)) → ⦋𝑙 / 𝑗⦌𝐶 ∈ (0[,]+∞))
59	43, 44, 45, 58	syl12anc 833	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵) → ⦋𝑙 / 𝑗⦌𝐶 ∈ (0[,]+∞))
60	59	ralrimiva 3107	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ∀𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵⦋𝑙 / 𝑗⦌𝐶 ∈ (0[,]+∞))
61		nfcv 2906	. . . . . . . . . 10 ⊢ Ⅎ𝑘⦋𝑙 / 𝑗⦌𝐵
62	61	esumcl 31898	. . . . . . . . 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 583	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → Σ*𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵⦋𝑙 / 𝑗⦌𝐶 ∈ (0[,]+∞))
64	31, 35, 36, 63	esumsnf 31932	. . . . . . 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 1918	. . . . . . . . 9 ⊢ Ⅎ𝑘(𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏)))
67		nfv 1918	. . . . . . . . . . 11 ⊢ Ⅎ𝑗 𝑧 = ⟨𝑙, 𝑘⟩
68	30	nfeq2 2923	. . . . . . . . . . 11 ⊢ Ⅎ𝑗 𝐹 = ⦋𝑙 / 𝑗⦌𝐶
69	67, 68	nfim 1900	. . . . . . . . . 10 ⊢ Ⅎ𝑗(𝑧 = ⟨𝑙, 𝑘⟩ → 𝐹 = ⦋𝑙 / 𝑗⦌𝐶)
70		opeq1 4801	. . . . . . . . . . . 12 ⊢ (𝑗 = 𝑙 → ⟨𝑗, 𝑘⟩ = ⟨𝑙, 𝑘⟩)
71	70	eqeq2d 2749	. . . . . . . . . . 11 ⊢ (𝑗 = 𝑙 → (𝑧 = ⟨𝑗, 𝑘⟩ ↔ 𝑧 = ⟨𝑙, 𝑘⟩))
72	33	eqeq2d 2749	. . . . . . . . . . 11 ⊢ (𝑗 = 𝑙 → (𝐹 = 𝐶 ↔ 𝐹 = ⦋𝑙 / 𝑗⦌𝐶))
73	71, 72	imbi12d 344	. . . . . . . . . 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 2236	. . . . . . . . 9 ⊢ (𝑧 = ⟨𝑙, 𝑘⟩ → 𝐹 = ⦋𝑙 / 𝑗⦌𝐶)
76		vsnid 4595	. . . . . . . . . . . . . . . . 17 ⊢ 𝑗 ∈ {𝑗}
77	76	a1i 11	. . . . . . . . . . . . . . . 16 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝐴) ∧ 𝑘 ∈ 𝐵) → 𝑗 ∈ {𝑗})
78		simpr 484	. . . . . . . . . . . . . . . 16 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝐴) ∧ 𝑘 ∈ 𝐵) → 𝑘 ∈ 𝐵)
79	77, 78	opelxpd 5618	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝐴) ∧ 𝑘 ∈ 𝐵) → ⟨𝑗, 𝑘⟩ ∈ ({𝑗} × 𝐵))
80		xp2nd 7837	. . . . . . . . . . . . . . . 16 ⊢ (𝑧 ∈ ({𝑗} × 𝐵) → (2nd ‘𝑧) ∈ 𝐵)
81		xp1st 7836	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑧 ∈ ({𝑗} × 𝐵) → (1st ‘𝑧) ∈ {𝑗})
82		fvex 6769	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (1st ‘𝑧) ∈ V
83	82	elsn 4573	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((1st ‘𝑧) ∈ {𝑗} ↔ (1st ‘𝑧) = 𝑗)
84	81, 83	sylib 217	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑧 ∈ ({𝑗} × 𝐵) → (1st ‘𝑧) = 𝑗)
85		eqop 7846	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑧 ∈ ({𝑗} × 𝐵) → (𝑧 = ⟨𝑗, 𝑘⟩ ↔ ((1st ‘𝑧) = 𝑗 ∧ (2nd ‘𝑧) = 𝑘)))
86	84, 85	mpbirand 703	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑧 ∈ ({𝑗} × 𝐵) → (𝑧 = ⟨𝑗, 𝑘⟩ ↔ (2nd ‘𝑧) = 𝑘))
87		eqcom 2745	. . . . . . . . . . . . . . . . . . 19 ⊢ ((2nd ‘𝑧) = 𝑘 ↔ 𝑘 = (2nd ‘𝑧))
88	86, 87	bitrdi 286	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑧 ∈ ({𝑗} × 𝐵) → (𝑧 = ⟨𝑗, 𝑘⟩ ↔ 𝑘 = (2nd ‘𝑧)))
89	88	ad2antlr 723	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝜑 ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) ∧ 𝑘 ∈ 𝐵) → (𝑧 = ⟨𝑗, 𝑘⟩ ↔ 𝑘 = (2nd ‘𝑧)))
90	89	ralrimiva 3107	. . . . . . . . . . . . . . . 16 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) → ∀𝑘 ∈ 𝐵 (𝑧 = ⟨𝑗, 𝑘⟩ ↔ 𝑘 = (2nd ‘𝑧)))
91		reu6i 3658	. . . . . . . . . . . . . . . 16 ⊢ (((2nd ‘𝑧) ∈ 𝐵 ∧ ∀𝑘 ∈ 𝐵 (𝑧 = ⟨𝑗, 𝑘⟩ ↔ 𝑘 = (2nd ‘𝑧))) → ∃!𝑘 ∈ 𝐵 𝑧 = ⟨𝑗, 𝑘⟩)
92	80, 90, 91	syl2an2 682	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) → ∃!𝑘 ∈ 𝐵 𝑧 = ⟨𝑗, 𝑘⟩)
93	79, 92	f1mptrn 30871	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝐴) → Fun ◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩))
94	93	ex 412	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝑗 ∈ 𝐴 → Fun ◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩)))
95	94	sbcimdv 3786	. . . . . . . . . . . 12 ⊢ (𝜑 → ([𝑙 / 𝑗]𝑗 ∈ 𝐴 → [𝑙 / 𝑗]Fun ◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩)))
96		sbcfung 6442	. . . . . . . . . . . . . 14 ⊢ (𝑙 ∈ V → ([𝑙 / 𝑗]Fun ◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) ↔ Fun ⦋𝑙 / 𝑗⦌◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩)))
97		csbcnv 5781	. . . . . . . . . . . . . . . 16 ⊢ ◡⦋𝑙 / 𝑗⦌(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) = ⦋𝑙 / 𝑗⦌◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩)
98		csbmpt12 5463	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑙 ∈ V → ⦋𝑙 / 𝑗⦌(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) = (𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⦋𝑙 / 𝑗⦌⟨𝑗, 𝑘⟩))
99		csbopg 4819	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑙 ∈ V → ⦋𝑙 / 𝑗⦌⟨𝑗, 𝑘⟩ = ⟨⦋𝑙 / 𝑗⦌𝑗, ⦋𝑙 / 𝑗⦌𝑘⟩)
100		csbvarg 4362	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑙 ∈ V → ⦋𝑙 / 𝑗⦌𝑗 = 𝑙)
101		csbconstg 3847	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑙 ∈ V → ⦋𝑙 / 𝑗⦌𝑘 = 𝑘)
102	100, 101	opeq12d 4809	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑙 ∈ V → ⟨⦋𝑙 / 𝑗⦌𝑗, ⦋𝑙 / 𝑗⦌𝑘⟩ = ⟨𝑙, 𝑘⟩)
103	99, 102	eqtrd 2778	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑙 ∈ V → ⦋𝑙 / 𝑗⦌⟨𝑗, 𝑘⟩ = ⟨𝑙, 𝑘⟩)
104	103	mpteq2dv 5172	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑙 ∈ V → (𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⦋𝑙 / 𝑗⦌⟨𝑗, 𝑘⟩) = (𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩))
105	98, 104	eqtrd 2778	. . . . . . . . . . . . . . . . 17 ⊢ (𝑙 ∈ V → ⦋𝑙 / 𝑗⦌(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) = (𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩))
106	105	cnveqd 5773	. . . . . . . . . . . . . . . 16 ⊢ (𝑙 ∈ V → ◡⦋𝑙 / 𝑗⦌(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) = ◡(𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩))
107	97, 106	eqtr3id 2793	. . . . . . . . . . . . . . 15 ⊢ (𝑙 ∈ V → ⦋𝑙 / 𝑗⦌◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) = ◡(𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩))
108	107	funeqd 6440	. . . . . . . . . . . . . 14 ⊢ (𝑙 ∈ V → (Fun ⦋𝑙 / 𝑗⦌◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) ↔ Fun ◡(𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩)))
109	96, 108	bitrd 278	. . . . . . . . . . . . 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 294	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑙 ∈ 𝐴 → Fun ◡(𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩)))
112	111	imp 406	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑙 ∈ 𝐴) → Fun ◡(𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩))
113	37, 112	syldan 590	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → Fun ◡(𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩))
114		vsnid 4595	. . . . . . . . . . 11 ⊢ 𝑙 ∈ {𝑙}
115	114	a1i 11	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵) → 𝑙 ∈ {𝑙})
116	115, 45	opelxpd 5618	. . . . . . . . 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 31919	. . . . . . . 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 2908	. . . . . . . . . 10 ⊢ Ⅎ𝑡{𝑡 ∣ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩}
119		nfcv 2906	. . . . . . . . . 10 ⊢ Ⅎ𝑡({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)
120		opeq1 4801	. . . . . . . . . . . . . 14 ⊢ (𝑖 = 𝑙 → ⟨𝑖, 𝑘⟩ = ⟨𝑙, 𝑘⟩)
121	120	eqeq2d 2749	. . . . . . . . . . . . 13 ⊢ (𝑖 = 𝑙 → (𝑡 = ⟨𝑖, 𝑘⟩ ↔ 𝑡 = ⟨𝑙, 𝑘⟩))
122	121	rexbidv 3225	. . . . . . . . . . . 12 ⊢ (𝑖 = 𝑙 → (∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑖, 𝑘⟩ ↔ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩))
123	54, 122	rexsn 4615	. . . . . . . . . . 11 ⊢ (∃𝑖 ∈ {𝑙}∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑖, 𝑘⟩ ↔ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩)
124		elxp2 5604	. . . . . . . . . . 11 ⊢ (𝑡 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵) ↔ ∃𝑖 ∈ {𝑙}∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑖, 𝑘⟩)
125		abid 2719	. . . . . . . . . . 11 ⊢ (𝑡 ∈ {𝑡 ∣ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩} ↔ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩)
126	123, 124, 125	3bitr4ri 303	. . . . . . . . . 10 ⊢ (𝑡 ∈ {𝑡 ∣ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩} ↔ 𝑡 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵))
127	118, 119, 126	eqri 3937	. . . . . . . . 9 ⊢ {𝑡 ∣ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩} = ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)
128		esumeq1 31902	. . . . . . . . 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 2795	. . . . . . 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 2778	. . . . . 6 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → Σ*𝑗 ∈ {𝑙}Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)𝐹)
132	131	adantr 480	. . . . 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 7273	. . . 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 1918	. . . . . 6 ⊢ Ⅎ𝑗(𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏)))
135		nfcv 2906	. . . . . 6 ⊢ Ⅎ𝑗𝑏
136		nfcv 2906	. . . . . 6 ⊢ Ⅎ𝑗{𝑙}
137		vex 3426	. . . . . . 7 ⊢ 𝑏 ∈ V
138	137	a1i 11	. . . . . 6 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → 𝑏 ∈ V)
139		snex 5349	. . . . . . 7 ⊢ {𝑙} ∈ V
140	139	a1i 11	. . . . . 6 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → {𝑙} ∈ V)
141	36	eldifbd 3896	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ¬ 𝑙 ∈ 𝑏)
142		disjsn 4644	. . . . . . 7 ⊢ ((𝑏 ∩ {𝑙}) = ∅ ↔ ¬ 𝑙 ∈ 𝑏)
143	141, 142	sylibr 233	. . . . . 6 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → (𝑏 ∩ {𝑙}) = ∅)
144		simpll 763	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → 𝜑)
145		simprl 767	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → 𝑏 ⊆ 𝐴)
146	145	sselda 3917	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → 𝑗 ∈ 𝐴)
147	46	anassrs 467	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝐴) ∧ 𝑘 ∈ 𝐵) → 𝐶 ∈ (0[,]+∞))
148	147	ralrimiva 3107	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝐴) → ∀𝑘 ∈ 𝐵 𝐶 ∈ (0[,]+∞))
149		nfcv 2906	. . . . . . . . 9 ⊢ Ⅎ𝑘𝐵
150	149	esumcl 31898	. . . . . . . 8 ⊢ ((𝐵 ∈ 𝑊 ∧ ∀𝑘 ∈ 𝐵 𝐶 ∈ (0[,]+∞)) → Σ*𝑘 ∈ 𝐵𝐶 ∈ (0[,]+∞))
151	38, 148, 150	syl2anc 583	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝐴) → Σ*𝑘 ∈ 𝐵𝐶 ∈ (0[,]+∞))
152	144, 146, 151	syl2anc 583	. . . . . 6 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → Σ*𝑘 ∈ 𝐵𝐶 ∈ (0[,]+∞))
153		simpll 763	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ {𝑙}) → 𝜑)
154	37	snssd 4739	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → {𝑙} ⊆ 𝐴)
155	154	sselda 3917	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ {𝑙}) → 𝑗 ∈ 𝐴)
156	153, 155, 151	syl2anc 583	. . . . . 6 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ {𝑙}) → Σ*𝑘 ∈ 𝐵𝐶 ∈ (0[,]+∞))
157	134, 135, 136, 138, 140, 143, 152, 156	esumsplit 31921	. . . . 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 480	. . . 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 5019	. . . . . . . 8 ⊢ ∪ 𝑗 ∈ (𝑏 ∪ {𝑙})({𝑗} × 𝐵) = (∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∪ ∪ 𝑗 ∈ {𝑙} ({𝑗} × 𝐵))
160	136, 29	nfxp 5613	. . . . . . . . . . 11 ⊢ Ⅎ𝑗({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)
161		sneq 4568	. . . . . . . . . . . 12 ⊢ (𝑗 = 𝑙 → {𝑗} = {𝑙})
162	161, 32	xpeq12d 5611	. . . . . . . . . . 11 ⊢ (𝑗 = 𝑙 → ({𝑗} × 𝐵) = ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵))
163	160, 162	iunxsngf 5017	. . . . . . . . . 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 4090	. . . . . . . 8 ⊢ (∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∪ ∪ 𝑗 ∈ {𝑙} ({𝑗} × 𝐵)) = (∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∪ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵))
166	159, 165	eqtri 2766	. . . . . . 7 ⊢ ∪ 𝑗 ∈ (𝑏 ∪ {𝑙})({𝑗} × 𝐵) = (∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∪ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵))
167		esumeq1 31902	. . . . . . 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 1918	. . . . . . 7 ⊢ Ⅎ𝑧(𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏)))
170		nfcv 2906	. . . . . . 7 ⊢ Ⅎ𝑧∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)
171		nfcv 2906	. . . . . . 7 ⊢ Ⅎ𝑧({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)
172		snex 5349	. . . . . . . . . 10 ⊢ {𝑗} ∈ V
173	146, 39	syldan 590	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → 𝐵 ∈ 𝑊)
174		xpexg 7578	. . . . . . . . . 10 ⊢ (({𝑗} ∈ V ∧ 𝐵 ∈ 𝑊) → ({𝑗} × 𝐵) ∈ V)
175	172, 173, 174	sylancr 586	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → ({𝑗} × 𝐵) ∈ V)
176	175	ralrimiva 3107	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ∀𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∈ V)
177		iunexg 7779	. . . . . . . 8 ⊢ ((𝑏 ∈ V ∧ ∀𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∈ V) → ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∈ V)
178	137, 176, 177	sylancr 586	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∈ V)
179		xpexg 7578	. . . . . . . 8 ⊢ (({𝑙} ∈ V ∧ ⦋𝑙 / 𝑗⦌𝐵 ∈ 𝑊) → ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵) ∈ V)
180	139, 42, 179	sylancr 586	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵) ∈ V)
181		simpr 484	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → 𝑗 ∈ 𝑏)
182	141	adantr 480	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → ¬ 𝑙 ∈ 𝑏)
183		nelne2 3041	. . . . . . . . . . 11 ⊢ ((𝑗 ∈ 𝑏 ∧ ¬ 𝑙 ∈ 𝑏) → 𝑗 ≠ 𝑙)
184	181, 182, 183	syl2anc 583	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → 𝑗 ≠ 𝑙)
185		disjsn2 4645	. . . . . . . . . 10 ⊢ (𝑗 ≠ 𝑙 → ({𝑗} ∩ {𝑙}) = ∅)
186		xpdisj1 6053	. . . . . . . . . 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 4945	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ∪ 𝑗 ∈ 𝑏 (({𝑗} × 𝐵) ∩ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)) = ∪ 𝑗 ∈ 𝑏 ∅)
189	160	iunin1f 30798	. . . . . . . 8 ⊢ ∪ 𝑗 ∈ 𝑏 (({𝑗} × 𝐵) ∩ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)) = (∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∩ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵))
190		iun0 4987	. . . . . . . 8 ⊢ ∪ 𝑗 ∈ 𝑏 ∅ = ∅
191	188, 189, 190	3eqtr3g 2802	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → (∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∩ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)) = ∅)
192		simpll 763	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)) → 𝜑)
193		iunss1 4935	. . . . . . . . . 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 3917	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)) → 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵))
196		nfv 1918	. . . . . . . . . 10 ⊢ Ⅎ𝑗𝜑
197		nfiu1 4955	. . . . . . . . . . 11 ⊢ Ⅎ𝑗∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)
198	197	nfcri 2893	. . . . . . . . . 10 ⊢ Ⅎ𝑗 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)
199	196, 198	nfan 1903	. . . . . . . . 9 ⊢ Ⅎ𝑗(𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵))
200		nfv 1918	. . . . . . . . . 10 ⊢ Ⅎ𝑘(((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵))
201		nfcv 2906	. . . . . . . . . . 11 ⊢ Ⅎ𝑘(0[,]+∞)
202	65, 201	nfel 2920	. . . . . . . . . 10 ⊢ Ⅎ𝑘 𝐹 ∈ (0[,]+∞)
203	74	adantl 481	. . . . . . . . . . 11 ⊢ ((((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) ∧ 𝑘 ∈ 𝐵) ∧ 𝑧 = ⟨𝑗, 𝑘⟩) → 𝐹 = 𝐶)
204		simp-5l 781	. . . . . . . . . . . 12 ⊢ ((((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) ∧ 𝑘 ∈ 𝐵) ∧ 𝑧 = ⟨𝑗, 𝑘⟩) → 𝜑)
205		simp-4r 780	. . . . . . . . . . . 12 ⊢ ((((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) ∧ 𝑘 ∈ 𝐵) ∧ 𝑧 = ⟨𝑗, 𝑘⟩) → 𝑗 ∈ 𝐴)
206		simplr 765	. . . . . . . . . . . 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 833	. . . . . . . . . . 11 ⊢ ((((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) ∧ 𝑘 ∈ 𝐵) ∧ 𝑧 = ⟨𝑗, 𝑘⟩) → 𝐶 ∈ (0[,]+∞))
208	203, 207	eqeltrd 2839	. . . . . . . . . 10 ⊢ ((((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) ∧ 𝑘 ∈ 𝐵) ∧ 𝑧 = ⟨𝑗, 𝑘⟩) → 𝐹 ∈ (0[,]+∞))
209		elsnxp 6183	. . . . . . . . . . . 12 ⊢ (𝑗 ∈ 𝐴 → (𝑧 ∈ ({𝑗} × 𝐵) ↔ ∃𝑘 ∈ 𝐵 𝑧 = ⟨𝑗, 𝑘⟩))
210	209	biimpa 476	. . . . . . . . . . 11 ⊢ ((𝑗 ∈ 𝐴 ∧ 𝑧 ∈ ({𝑗} × 𝐵)) → ∃𝑘 ∈ 𝐵 𝑧 = ⟨𝑗, 𝑘⟩)
211	210	adantll 710	. . . . . . . . . 10 ⊢ ((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) → ∃𝑘 ∈ 𝐵 𝑧 = ⟨𝑗, 𝑘⟩)
212	200, 202, 208, 211	r19.29af2 3258	. . . . . . . . 9 ⊢ ((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) → 𝐹 ∈ (0[,]+∞))
213		simpr 484	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) → 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵))
214		eliun 4925	. . . . . . . . . 10 ⊢ (𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵) ↔ ∃𝑗 ∈ 𝐴 𝑧 ∈ ({𝑗} × 𝐵))
215	213, 214	sylib 217	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) → ∃𝑗 ∈ 𝐴 𝑧 ∈ ({𝑗} × 𝐵))
216	199, 212, 215	r19.29af 3259	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) → 𝐹 ∈ (0[,]+∞))
217	192, 195, 216	syl2anc 583	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)) → 𝐹 ∈ (0[,]+∞))
218		simpll 763	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑧 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)) → 𝜑)
219		nfcv 2906	. . . . . . . . . . 11 ⊢ Ⅎ𝑗𝐴
220		nfcv 2906	. . . . . . . . . . 11 ⊢ Ⅎ𝑗𝑙
221	219, 220, 160, 162	ssiun2sf 30800	. . . . . . . . . 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 3917	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑧 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)) → 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵))
224	218, 223, 216	syl2anc 583	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑧 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)) → 𝐹 ∈ (0[,]+∞))
225	169, 170, 171, 178, 180, 191, 217, 224	esumsplit 31921	. . . . . 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 2791	. . . . 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 480	. . . 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 2788	. . 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 412	. 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 8911	1 ⊢ (𝜑 → Σ*𝑗 ∈ 𝐴Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)𝐹)

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 205   ∧ wa 395   = wceq 1539   ∈ wcel 2108  {cab 2715  Ⅎwnfc 2886   ≠ wne 2942  ∀wral 3063  ∃wrex 3064  ∃!wreu 3065  Vcvv 3422  [wsbc 3711  ⦋csb 3828   ∖ cdif 3880   ∪ cun 3881   ∩ cin 3882   ⊆ wss 3883  ∅c0 4253  {csn 4558  ⟨cop 4564  ∪ ciun 4921   ↦ cmpt 5153   × cxp 5578  ^◡ccnv 5579  Fun wfun 6412  ‘cfv 6418  (class class class)co 7255  1^st c1st 7802  2^nd c2nd 7803  Fincfn 8691  0cc0 10802  +∞cpnf 10937   +_𝑒 cxad 12775  [,]cicc 13011  Σ^*cesum 31895

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1799  ax-4 1813  ax-5 1914  ax-6 1972  ax-7 2012  ax-8 2110  ax-9 2118  ax-10 2139  ax-11 2156  ax-12 2173  ax-ext 2709  ax-rep 5205  ax-sep 5218  ax-nul 5225  ax-pow 5283  ax-pr 5347  ax-un 7566  ax-inf2 9329  ax-cnex 10858  ax-resscn 10859  ax-1cn 10860  ax-icn 10861  ax-addcl 10862  ax-addrcl 10863  ax-mulcl 10864  ax-mulrcl 10865  ax-mulcom 10866  ax-addass 10867  ax-mulass 10868  ax-distr 10869  ax-i2m1 10870  ax-1ne0 10871  ax-1rid 10872  ax-rnegex 10873  ax-rrecex 10874  ax-cnre 10875  ax-pre-lttri 10876  ax-pre-lttrn 10877  ax-pre-ltadd 10878  ax-pre-mulgt0 10879  ax-pre-sup 10880  ax-addf 10881  ax-mulf 10882

This theorem depends on definitions:  df-bi 206  df-an 396  df-or 844  df-3or 1086  df-3an 1087  df-tru 1542  df-fal 1552  df-ex 1784  df-nf 1788  df-sb 2069  df-mo 2540  df-eu 2569  df-clab 2716  df-cleq 2730  df-clel 2817  df-nfc 2888  df-ne 2943  df-nel 3049  df-ral 3068  df-rex 3069  df-reu 3070  df-rmo 3071  df-rab 3072  df-v 3424  df-sbc 3712  df-csb 3829  df-dif 3886  df-un 3888  df-in 3890  df-ss 3900  df-pss 3902  df-nul 4254  df-if 4457  df-pw 4532  df-sn 4559  df-pr 4561  df-tp 4563  df-op 4565  df-uni 4837  df-int 4877  df-iun 4923  df-iin 4924  df-br 5071  df-opab 5133  df-mpt 5154  df-tr 5188  df-id 5480  df-eprel 5486  df-po 5494  df-so 5495  df-fr 5535  df-se 5536  df-we 5537  df-xp 5586  df-rel 5587  df-cnv 5588  df-co 5589  df-dm 5590  df-rn 5591  df-res 5592  df-ima 5593  df-pred 6191  df-ord 6254  df-on 6255  df-lim 6256  df-suc 6257  df-iota 6376  df-fun 6420  df-fn 6421  df-f 6422  df-f1 6423  df-fo 6424  df-f1o 6425  df-fv 6426  df-isom 6427  df-riota 7212  df-ov 7258  df-oprab 7259  df-mpo 7260  df-of 7511  df-om 7688  df-1st 7804  df-2nd 7805  df-supp 7949  df-frecs 8068  df-wrecs 8099  df-recs 8173  df-rdg 8212  df-1o 8267  df-2o 8268  df-er 8456  df-map 8575  df-pm 8576  df-ixp 8644  df-en 8692  df-dom 8693  df-sdom 8694  df-fin 8695  df-fsupp 9059  df-fi 9100  df-sup 9131  df-inf 9132  df-oi 9199  df-card 9628  df-pnf 10942  df-mnf 10943  df-xr 10944  df-ltxr 10945  df-le 10946  df-sub 11137  df-neg 11138  df-div 11563  df-nn 11904  df-2 11966  df-3 11967  df-4 11968  df-5 11969  df-6 11970  df-7 11971  df-8 11972  df-9 11973  df-n0 12164  df-z 12250  df-dec 12367  df-uz 12512  df-q 12618  df-rp 12660  df-xneg 12777  df-xadd 12778  df-xmul 12779  df-ioo 13012  df-ioc 13013  df-ico 13014  df-icc 13015  df-fz 13169  df-fzo 13312  df-fl 13440  df-mod 13518  df-seq 13650  df-exp 13711  df-fac 13916  df-bc 13945  df-hash 13973  df-shft 14706  df-cj 14738  df-re 14739  df-im 14740  df-sqrt 14874  df-abs 14875  df-limsup 15108  df-clim 15125  df-rlim 15126  df-sum 15326  df-ef 15705  df-sin 15707  df-cos 15708  df-pi 15710  df-struct 16776  df-sets 16793  df-slot 16811  df-ndx 16823  df-base 16841  df-ress 16868  df-plusg 16901  df-mulr 16902  df-starv 16903  df-sca 16904  df-vsca 16905  df-ip 16906  df-tset 16907  df-ple 16908  df-ds 16910  df-unif 16911  df-hom 16912  df-cco 16913  df-rest 17050  df-topn 17051  df-0g 17069  df-gsum 17070  df-topgen 17071  df-pt 17072  df-prds 17075  df-ordt 17129  df-xrs 17130  df-qtop 17135  df-imas 17136  df-xps 17138  df-mre 17212  df-mrc 17213  df-acs 17215  df-ps 18199  df-tsr 18200  df-plusf 18240  df-mgm 18241  df-sgrp 18290  df-mnd 18301  df-mhm 18345  df-submnd 18346  df-grp 18495  df-minusg 18496  df-sbg 18497  df-mulg 18616  df-subg 18667  df-cntz 18838  df-cmn 19303  df-abl 19304  df-mgp 19636  df-ur 19653  df-ring 19700  df-cring 19701  df-subrg 19937  df-abv 19992  df-lmod 20040  df-scaf 20041  df-sra 20349  df-rgmod 20350  df-psmet 20502  df-xmet 20503  df-met 20504  df-bl 20505  df-mopn 20506  df-fbas 20507  df-fg 20508  df-cnfld 20511  df-top 21951  df-topon 21968  df-topsp 21990  df-bases 22004  df-cld 22078  df-ntr 22079  df-cls 22080  df-nei 22157  df-lp 22195  df-perf 22196  df-cn 22286  df-cnp 22287  df-haus 22374  df-tx 22621  df-hmeo 22814  df-fil 22905  df-fm 22997  df-flim 22998  df-flf 22999  df-tmd 23131  df-tgp 23132  df-tsms 23186  df-trg 23219  df-xms 23381  df-ms 23382  df-tms 23383  df-nm 23644  df-ngp 23645  df-nrg 23647  df-nlm 23648  df-ii 23946  df-cncf 23947  df-limc 24935  df-dv 24936  df-log 25617  df-esum 31896

This theorem is referenced by:  esum2d  31961