Theorem esum2dlem 32056

Description: Lemma for esum2d 32057 (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 31998	. . 3 ⊢ (𝑎 = ∅ → Σ*𝑗 ∈ 𝑎Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑗 ∈ ∅Σ*𝑘 ∈ 𝐵𝐶)
2		nfv 1921	. . . 4 ⊢ Ⅎ𝑧 𝑎 = ∅
3		iuneq1 4946	. . . 4 ⊢ (𝑎 = ∅ → ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵) = ∪ 𝑗 ∈ ∅ ({𝑗} × 𝐵))
4	2, 3	esumeq1d 31999	. . 3 ⊢ (𝑎 = ∅ → Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵)𝐹 = Σ*𝑧 ∈ ∪ 𝑗 ∈ ∅ ({𝑗} × 𝐵)𝐹)
5	1, 4	eqeq12d 2756	. 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 31998	. . 3 ⊢ (𝑎 = 𝑏 → Σ*𝑗 ∈ 𝑎Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑗 ∈ 𝑏Σ*𝑘 ∈ 𝐵𝐶)
7		nfv 1921	. . . 4 ⊢ Ⅎ𝑧 𝑎 = 𝑏
8		iuneq1 4946	. . . 4 ⊢ (𝑎 = 𝑏 → ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵) = ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵))
9	7, 8	esumeq1d 31999	. . 3 ⊢ (𝑎 = 𝑏 → Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵)𝐹 = Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)𝐹)
10	6, 9	eqeq12d 2756	. 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 31998	. . 3 ⊢ (𝑎 = (𝑏 ∪ {𝑙}) → Σ*𝑗 ∈ 𝑎Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑗 ∈ (𝑏 ∪ {𝑙})Σ*𝑘 ∈ 𝐵𝐶)
12		nfv 1921	. . . 4 ⊢ Ⅎ𝑧 𝑎 = (𝑏 ∪ {𝑙})
13		iuneq1 4946	. . . 4 ⊢ (𝑎 = (𝑏 ∪ {𝑙}) → ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵) = ∪ 𝑗 ∈ (𝑏 ∪ {𝑙})({𝑗} × 𝐵))
14	12, 13	esumeq1d 31999	. . 3 ⊢ (𝑎 = (𝑏 ∪ {𝑙}) → Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵)𝐹 = Σ*𝑧 ∈ ∪ 𝑗 ∈ (𝑏 ∪ {𝑙})({𝑗} × 𝐵)𝐹)
15	11, 14	eqeq12d 2756	. 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 31998	. . 3 ⊢ (𝑎 = 𝐴 → Σ*𝑗 ∈ 𝑎Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑗 ∈ 𝐴Σ*𝑘 ∈ 𝐵𝐶)
17		nfv 1921	. . . 4 ⊢ Ⅎ𝑧 𝑎 = 𝐴
18		iuneq1 4946	. . . 4 ⊢ (𝑎 = 𝐴 → ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵) = ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵))
19	17, 18	esumeq1d 31999	. . 3 ⊢ (𝑎 = 𝐴 → Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵)𝐹 = Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)𝐹)
20	16, 19	eqeq12d 2756	. 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 32012	. . . 4 ⊢ Σ*𝑧 ∈ ∅𝐹 = 0
22		0iun 4997	. . . . 5 ⊢ ∪ 𝑗 ∈ ∅ ({𝑗} × 𝐵) = ∅
23		esumeq1 31998	. . . . 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 32012	. . . 4 ⊢ Σ*𝑗 ∈ ∅Σ*𝑘 ∈ 𝐵𝐶 = 0
26	21, 24, 25	3eqtr4ri 2779	. . 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 485	. . . . 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 3862	. . . . . . . . 9 ⊢ Ⅎ𝑗⦋𝑙 / 𝑗⦌𝐵
30		nfcsb1v 3862	. . . . . . . . 9 ⊢ Ⅎ𝑗⦋𝑙 / 𝑗⦌𝐶
31	29, 30	nfesum2 32005	. . . . . . . 8 ⊢ Ⅎ𝑗Σ*𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵⦋𝑙 / 𝑗⦌𝐶
32		csbeq1a 3851	. . . . . . . . . 10 ⊢ (𝑗 = 𝑙 → 𝐵 = ⦋𝑙 / 𝑗⦌𝐵)
33		csbeq1a 3851	. . . . . . . . . 10 ⊢ (𝑗 = 𝑙 → 𝐶 = ⦋𝑙 / 𝑗⦌𝐶)
34	32, 33	esumeq12d 31997	. . . . . . . . 9 ⊢ (𝑗 = 𝑙 → Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵⦋𝑙 / 𝑗⦌𝐶)
35	34	adantl 482	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 = 𝑙) → Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵⦋𝑙 / 𝑗⦌𝐶)
36		simprr 770	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → 𝑙 ∈ (𝐴 ∖ 𝑏))
37	36	eldifad 3904	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → 𝑙 ∈ 𝐴)
38		esum2d.3	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝐴) → 𝐵 ∈ 𝑊)
39	38	adantlr 712	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝐴) → 𝐵 ∈ 𝑊)
40	39	ralrimiva 3110	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ∀𝑗 ∈ 𝐴 𝐵 ∈ 𝑊)
41		rspcsbela 4375	. . . . . . . . . 10 ⊢ ((𝑙 ∈ 𝐴 ∧ ∀𝑗 ∈ 𝐴 𝐵 ∈ 𝑊) → ⦋𝑙 / 𝑗⦌𝐵 ∈ 𝑊)
42	37, 40, 41	syl2anc 584	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ⦋𝑙 / 𝑗⦌𝐵 ∈ 𝑊)
43		simpll 764	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵) → 𝜑)
44	37	adantr 481	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵) → 𝑙 ∈ 𝐴)
45		simpr 485	. . . . . . . . . . 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 413	. . . . . . . . . . . . . 14 ⊢ (𝜑 → ((𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐵) → 𝐶 ∈ (0[,]+∞)))
48	47	sbcimdv 3795	. . . . . . . . . . . . 13 ⊢ (𝜑 → ([𝑙 / 𝑗](𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐵) → [𝑙 / 𝑗]𝐶 ∈ (0[,]+∞)))
49		sbcan 3772	. . . . . . . . . . . . . 14 ⊢ ([𝑙 / 𝑗](𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐵) ↔ ([𝑙 / 𝑗]𝑗 ∈ 𝐴 ∧ [𝑙 / 𝑗]𝑘 ∈ 𝐵))
50		sbcel1v 3792	. . . . . . . . . . . . . . 15 ⊢ ([𝑙 / 𝑗]𝑗 ∈ 𝐴 ↔ 𝑙 ∈ 𝐴)
51		sbcel2 4355	. . . . . . . . . . . . . . 15 ⊢ ([𝑙 / 𝑗]𝑘 ∈ 𝐵 ↔ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵)
52	50, 51	anbi12i 627	. . . . . . . . . . . . . 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 3435	. . . . . . . . . . . . . 14 ⊢ 𝑙 ∈ V
55		sbcel1g 4353	. . . . . . . . . . . . . 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 295	. . . . . . . . . . . 12 ⊢ (𝜑 → ((𝑙 ∈ 𝐴 ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵) → ⦋𝑙 / 𝑗⦌𝐶 ∈ (0[,]+∞)))
58	57	imp 407	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝑙 ∈ 𝐴 ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵)) → ⦋𝑙 / 𝑗⦌𝐶 ∈ (0[,]+∞))
59	43, 44, 45, 58	syl12anc 834	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵) → ⦋𝑙 / 𝑗⦌𝐶 ∈ (0[,]+∞))
60	59	ralrimiva 3110	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ∀𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵⦋𝑙 / 𝑗⦌𝐶 ∈ (0[,]+∞))
61		nfcv 2909	. . . . . . . . . 10 ⊢ Ⅎ𝑘⦋𝑙 / 𝑗⦌𝐵
62	61	esumcl 31994	. . . . . . . . 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 584	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → Σ*𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵⦋𝑙 / 𝑗⦌𝐶 ∈ (0[,]+∞))
64	31, 35, 36, 63	esumsnf 32028	. . . . . . 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 1921	. . . . . . . . 9 ⊢ Ⅎ𝑘(𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏)))
67		nfv 1921	. . . . . . . . . . 11 ⊢ Ⅎ𝑗 𝑧 = ⟨𝑙, 𝑘⟩
68	30	nfeq2 2926	. . . . . . . . . . 11 ⊢ Ⅎ𝑗 𝐹 = ⦋𝑙 / 𝑗⦌𝐶
69	67, 68	nfim 1903	. . . . . . . . . 10 ⊢ Ⅎ𝑗(𝑧 = ⟨𝑙, 𝑘⟩ → 𝐹 = ⦋𝑙 / 𝑗⦌𝐶)
70		opeq1 4810	. . . . . . . . . . . 12 ⊢ (𝑗 = 𝑙 → ⟨𝑗, 𝑘⟩ = ⟨𝑙, 𝑘⟩)
71	70	eqeq2d 2751	. . . . . . . . . . 11 ⊢ (𝑗 = 𝑙 → (𝑧 = ⟨𝑗, 𝑘⟩ ↔ 𝑧 = ⟨𝑙, 𝑘⟩))
72	33	eqeq2d 2751	. . . . . . . . . . 11 ⊢ (𝑗 = 𝑙 → (𝐹 = 𝐶 ↔ 𝐹 = ⦋𝑙 / 𝑗⦌𝐶))
73	71, 72	imbi12d 345	. . . . . . . . . 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 2237	. . . . . . . . 9 ⊢ (𝑧 = ⟨𝑙, 𝑘⟩ → 𝐹 = ⦋𝑙 / 𝑗⦌𝐶)
76		vsnid 4604	. . . . . . . . . . . . . . . . 17 ⊢ 𝑗 ∈ {𝑗}
77	76	a1i 11	. . . . . . . . . . . . . . . 16 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝐴) ∧ 𝑘 ∈ 𝐵) → 𝑗 ∈ {𝑗})
78		simpr 485	. . . . . . . . . . . . . . . 16 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝐴) ∧ 𝑘 ∈ 𝐵) → 𝑘 ∈ 𝐵)
79	77, 78	opelxpd 5628	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝐴) ∧ 𝑘 ∈ 𝐵) → ⟨𝑗, 𝑘⟩ ∈ ({𝑗} × 𝐵))
80		xp2nd 7857	. . . . . . . . . . . . . . . 16 ⊢ (𝑧 ∈ ({𝑗} × 𝐵) → (2nd ‘𝑧) ∈ 𝐵)
81		xp1st 7856	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑧 ∈ ({𝑗} × 𝐵) → (1st ‘𝑧) ∈ {𝑗})
82		fvex 6784	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (1st ‘𝑧) ∈ V
83	82	elsn 4582	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((1st ‘𝑧) ∈ {𝑗} ↔ (1st ‘𝑧) = 𝑗)
84	81, 83	sylib 217	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑧 ∈ ({𝑗} × 𝐵) → (1st ‘𝑧) = 𝑗)
85		eqop 7866	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑧 ∈ ({𝑗} × 𝐵) → (𝑧 = ⟨𝑗, 𝑘⟩ ↔ ((1st ‘𝑧) = 𝑗 ∧ (2nd ‘𝑧) = 𝑘)))
86	84, 85	mpbirand 704	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑧 ∈ ({𝑗} × 𝐵) → (𝑧 = ⟨𝑗, 𝑘⟩ ↔ (2nd ‘𝑧) = 𝑘))
87		eqcom 2747	. . . . . . . . . . . . . . . . . . 19 ⊢ ((2nd ‘𝑧) = 𝑘 ↔ 𝑘 = (2nd ‘𝑧))
88	86, 87	bitrdi 287	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑧 ∈ ({𝑗} × 𝐵) → (𝑧 = ⟨𝑗, 𝑘⟩ ↔ 𝑘 = (2nd ‘𝑧)))
89	88	ad2antlr 724	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝜑 ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) ∧ 𝑘 ∈ 𝐵) → (𝑧 = ⟨𝑗, 𝑘⟩ ↔ 𝑘 = (2nd ‘𝑧)))
90	89	ralrimiva 3110	. . . . . . . . . . . . . . . 16 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) → ∀𝑘 ∈ 𝐵 (𝑧 = ⟨𝑗, 𝑘⟩ ↔ 𝑘 = (2nd ‘𝑧)))
91		reu6i 3667	. . . . . . . . . . . . . . . 16 ⊢ (((2nd ‘𝑧) ∈ 𝐵 ∧ ∀𝑘 ∈ 𝐵 (𝑧 = ⟨𝑗, 𝑘⟩ ↔ 𝑘 = (2nd ‘𝑧))) → ∃!𝑘 ∈ 𝐵 𝑧 = ⟨𝑗, 𝑘⟩)
92	80, 90, 91	syl2an2 683	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) → ∃!𝑘 ∈ 𝐵 𝑧 = ⟨𝑗, 𝑘⟩)
93	79, 92	f1mptrn 30966	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝐴) → Fun ◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩))
94	93	ex 413	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝑗 ∈ 𝐴 → Fun ◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩)))
95	94	sbcimdv 3795	. . . . . . . . . . . 12 ⊢ (𝜑 → ([𝑙 / 𝑗]𝑗 ∈ 𝐴 → [𝑙 / 𝑗]Fun ◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩)))
96		sbcfung 6456	. . . . . . . . . . . . . 14 ⊢ (𝑙 ∈ V → ([𝑙 / 𝑗]Fun ◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) ↔ Fun ⦋𝑙 / 𝑗⦌◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩)))
97		csbcnv 5791	. . . . . . . . . . . . . . . 16 ⊢ ◡⦋𝑙 / 𝑗⦌(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) = ⦋𝑙 / 𝑗⦌◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩)
98		csbmpt12 5473	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑙 ∈ V → ⦋𝑙 / 𝑗⦌(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) = (𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⦋𝑙 / 𝑗⦌⟨𝑗, 𝑘⟩))
99		csbopg 4828	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑙 ∈ V → ⦋𝑙 / 𝑗⦌⟨𝑗, 𝑘⟩ = ⟨⦋𝑙 / 𝑗⦌𝑗, ⦋𝑙 / 𝑗⦌𝑘⟩)
100		csbvarg 4371	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑙 ∈ V → ⦋𝑙 / 𝑗⦌𝑗 = 𝑙)
101		csbconstg 3856	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑙 ∈ V → ⦋𝑙 / 𝑗⦌𝑘 = 𝑘)
102	100, 101	opeq12d 4818	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑙 ∈ V → ⟨⦋𝑙 / 𝑗⦌𝑗, ⦋𝑙 / 𝑗⦌𝑘⟩ = ⟨𝑙, 𝑘⟩)
103	99, 102	eqtrd 2780	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑙 ∈ V → ⦋𝑙 / 𝑗⦌⟨𝑗, 𝑘⟩ = ⟨𝑙, 𝑘⟩)
104	103	mpteq2dv 5181	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑙 ∈ V → (𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⦋𝑙 / 𝑗⦌⟨𝑗, 𝑘⟩) = (𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩))
105	98, 104	eqtrd 2780	. . . . . . . . . . . . . . . . 17 ⊢ (𝑙 ∈ V → ⦋𝑙 / 𝑗⦌(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) = (𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩))
106	105	cnveqd 5783	. . . . . . . . . . . . . . . 16 ⊢ (𝑙 ∈ V → ◡⦋𝑙 / 𝑗⦌(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) = ◡(𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩))
107	97, 106	eqtr3id 2794	. . . . . . . . . . . . . . 15 ⊢ (𝑙 ∈ V → ⦋𝑙 / 𝑗⦌◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) = ◡(𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩))
108	107	funeqd 6454	. . . . . . . . . . . . . 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 295	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑙 ∈ 𝐴 → Fun ◡(𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩)))
112	111	imp 407	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑙 ∈ 𝐴) → Fun ◡(𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩))
113	37, 112	syldan 591	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → Fun ◡(𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩))
114		vsnid 4604	. . . . . . . . . . 11 ⊢ 𝑙 ∈ {𝑙}
115	114	a1i 11	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵) → 𝑙 ∈ {𝑙})
116	115, 45	opelxpd 5628	. . . . . . . . 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 32015	. . . . . . . 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 2911	. . . . . . . . . 10 ⊢ Ⅎ𝑡{𝑡 ∣ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩}
119		nfcv 2909	. . . . . . . . . 10 ⊢ Ⅎ𝑡({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)
120		opeq1 4810	. . . . . . . . . . . . . 14 ⊢ (𝑖 = 𝑙 → ⟨𝑖, 𝑘⟩ = ⟨𝑙, 𝑘⟩)
121	120	eqeq2d 2751	. . . . . . . . . . . . 13 ⊢ (𝑖 = 𝑙 → (𝑡 = ⟨𝑖, 𝑘⟩ ↔ 𝑡 = ⟨𝑙, 𝑘⟩))
122	121	rexbidv 3228	. . . . . . . . . . . 12 ⊢ (𝑖 = 𝑙 → (∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑖, 𝑘⟩ ↔ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩))
123	54, 122	rexsn 4624	. . . . . . . . . . 11 ⊢ (∃𝑖 ∈ {𝑙}∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑖, 𝑘⟩ ↔ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩)
124		elxp2 5614	. . . . . . . . . . 11 ⊢ (𝑡 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵) ↔ ∃𝑖 ∈ {𝑙}∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑖, 𝑘⟩)
125		abid 2721	. . . . . . . . . . 11 ⊢ (𝑡 ∈ {𝑡 ∣ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩} ↔ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩)
126	123, 124, 125	3bitr4ri 304	. . . . . . . . . 10 ⊢ (𝑡 ∈ {𝑡 ∣ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩} ↔ 𝑡 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵))
127	118, 119, 126	eqri 3946	. . . . . . . . 9 ⊢ {𝑡 ∣ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩} = ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)
128		esumeq1 31998	. . . . . . . . 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 2796	. . . . . . 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 2780	. . . . . 6 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → Σ*𝑗 ∈ {𝑙}Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)𝐹)
132	131	adantr 481	. . . . 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 7289	. . . 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 1921	. . . . . 6 ⊢ Ⅎ𝑗(𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏)))
135		nfcv 2909	. . . . . 6 ⊢ Ⅎ𝑗𝑏
136		nfcv 2909	. . . . . 6 ⊢ Ⅎ𝑗{𝑙}
137		vex 3435	. . . . . . 7 ⊢ 𝑏 ∈ V
138	137	a1i 11	. . . . . 6 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → 𝑏 ∈ V)
139		snex 5358	. . . . . . 7 ⊢ {𝑙} ∈ V
140	139	a1i 11	. . . . . 6 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → {𝑙} ∈ V)
141	36	eldifbd 3905	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ¬ 𝑙 ∈ 𝑏)
142		disjsn 4653	. . . . . . 7 ⊢ ((𝑏 ∩ {𝑙}) = ∅ ↔ ¬ 𝑙 ∈ 𝑏)
143	141, 142	sylibr 233	. . . . . 6 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → (𝑏 ∩ {𝑙}) = ∅)
144		simpll 764	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → 𝜑)
145		simprl 768	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → 𝑏 ⊆ 𝐴)
146	145	sselda 3926	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → 𝑗 ∈ 𝐴)
147	46	anassrs 468	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝐴) ∧ 𝑘 ∈ 𝐵) → 𝐶 ∈ (0[,]+∞))
148	147	ralrimiva 3110	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝐴) → ∀𝑘 ∈ 𝐵 𝐶 ∈ (0[,]+∞))
149		nfcv 2909	. . . . . . . . 9 ⊢ Ⅎ𝑘𝐵
150	149	esumcl 31994	. . . . . . . 8 ⊢ ((𝐵 ∈ 𝑊 ∧ ∀𝑘 ∈ 𝐵 𝐶 ∈ (0[,]+∞)) → Σ*𝑘 ∈ 𝐵𝐶 ∈ (0[,]+∞))
151	38, 148, 150	syl2anc 584	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝐴) → Σ*𝑘 ∈ 𝐵𝐶 ∈ (0[,]+∞))
152	144, 146, 151	syl2anc 584	. . . . . 6 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → Σ*𝑘 ∈ 𝐵𝐶 ∈ (0[,]+∞))
153		simpll 764	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ {𝑙}) → 𝜑)
154	37	snssd 4748	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → {𝑙} ⊆ 𝐴)
155	154	sselda 3926	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ {𝑙}) → 𝑗 ∈ 𝐴)
156	153, 155, 151	syl2anc 584	. . . . . 6 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ {𝑙}) → Σ*𝑘 ∈ 𝐵𝐶 ∈ (0[,]+∞))
157	134, 135, 136, 138, 140, 143, 152, 156	esumsplit 32017	. . . . 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 481	. . . 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 5028	. . . . . . . 8 ⊢ ∪ 𝑗 ∈ (𝑏 ∪ {𝑙})({𝑗} × 𝐵) = (∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∪ ∪ 𝑗 ∈ {𝑙} ({𝑗} × 𝐵))
160	136, 29	nfxp 5623	. . . . . . . . . . 11 ⊢ Ⅎ𝑗({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)
161		sneq 4577	. . . . . . . . . . . 12 ⊢ (𝑗 = 𝑙 → {𝑗} = {𝑙})
162	161, 32	xpeq12d 5621	. . . . . . . . . . 11 ⊢ (𝑗 = 𝑙 → ({𝑗} × 𝐵) = ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵))
163	160, 162	iunxsngf 5026	. . . . . . . . . 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 4099	. . . . . . . 8 ⊢ (∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∪ ∪ 𝑗 ∈ {𝑙} ({𝑗} × 𝐵)) = (∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∪ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵))
166	159, 165	eqtri 2768	. . . . . . 7 ⊢ ∪ 𝑗 ∈ (𝑏 ∪ {𝑙})({𝑗} × 𝐵) = (∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∪ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵))
167		esumeq1 31998	. . . . . . 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 1921	. . . . . . 7 ⊢ Ⅎ𝑧(𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏)))
170		nfcv 2909	. . . . . . 7 ⊢ Ⅎ𝑧∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)
171		nfcv 2909	. . . . . . 7 ⊢ Ⅎ𝑧({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)
172		snex 5358	. . . . . . . . . 10 ⊢ {𝑗} ∈ V
173	146, 39	syldan 591	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → 𝐵 ∈ 𝑊)
174		xpexg 7594	. . . . . . . . . 10 ⊢ (({𝑗} ∈ V ∧ 𝐵 ∈ 𝑊) → ({𝑗} × 𝐵) ∈ V)
175	172, 173, 174	sylancr 587	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → ({𝑗} × 𝐵) ∈ V)
176	175	ralrimiva 3110	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ∀𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∈ V)
177		iunexg 7799	. . . . . . . 8 ⊢ ((𝑏 ∈ V ∧ ∀𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∈ V) → ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∈ V)
178	137, 176, 177	sylancr 587	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∈ V)
179		xpexg 7594	. . . . . . . 8 ⊢ (({𝑙} ∈ V ∧ ⦋𝑙 / 𝑗⦌𝐵 ∈ 𝑊) → ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵) ∈ V)
180	139, 42, 179	sylancr 587	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵) ∈ V)
181		simpr 485	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → 𝑗 ∈ 𝑏)
182	141	adantr 481	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → ¬ 𝑙 ∈ 𝑏)
183		nelne2 3044	. . . . . . . . . . 11 ⊢ ((𝑗 ∈ 𝑏 ∧ ¬ 𝑙 ∈ 𝑏) → 𝑗 ≠ 𝑙)
184	181, 182, 183	syl2anc 584	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → 𝑗 ≠ 𝑙)
185		disjsn2 4654	. . . . . . . . . 10 ⊢ (𝑗 ≠ 𝑙 → ({𝑗} ∩ {𝑙}) = ∅)
186		xpdisj1 6063	. . . . . . . . . 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 4954	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ∪ 𝑗 ∈ 𝑏 (({𝑗} × 𝐵) ∩ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)) = ∪ 𝑗 ∈ 𝑏 ∅)
189	160	iunin1f 30893	. . . . . . . 8 ⊢ ∪ 𝑗 ∈ 𝑏 (({𝑗} × 𝐵) ∩ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)) = (∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∩ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵))
190		iun0 4996	. . . . . . . 8 ⊢ ∪ 𝑗 ∈ 𝑏 ∅ = ∅
191	188, 189, 190	3eqtr3g 2803	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → (∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∩ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)) = ∅)
192		simpll 764	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)) → 𝜑)
193		iunss1 4944	. . . . . . . . . 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 3926	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)) → 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵))
196		nfv 1921	. . . . . . . . . 10 ⊢ Ⅎ𝑗𝜑
197		nfiu1 4964	. . . . . . . . . . 11 ⊢ Ⅎ𝑗∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)
198	197	nfcri 2896	. . . . . . . . . 10 ⊢ Ⅎ𝑗 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)
199	196, 198	nfan 1906	. . . . . . . . 9 ⊢ Ⅎ𝑗(𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵))
200		nfv 1921	. . . . . . . . . 10 ⊢ Ⅎ𝑘(((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵))
201		nfcv 2909	. . . . . . . . . . 11 ⊢ Ⅎ𝑘(0[,]+∞)
202	65, 201	nfel 2923	. . . . . . . . . 10 ⊢ Ⅎ𝑘 𝐹 ∈ (0[,]+∞)
203	74	adantl 482	. . . . . . . . . . 11 ⊢ ((((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) ∧ 𝑘 ∈ 𝐵) ∧ 𝑧 = ⟨𝑗, 𝑘⟩) → 𝐹 = 𝐶)
204		simp-5l 782	. . . . . . . . . . . 12 ⊢ ((((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) ∧ 𝑘 ∈ 𝐵) ∧ 𝑧 = ⟨𝑗, 𝑘⟩) → 𝜑)
205		simp-4r 781	. . . . . . . . . . . 12 ⊢ ((((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) ∧ 𝑘 ∈ 𝐵) ∧ 𝑧 = ⟨𝑗, 𝑘⟩) → 𝑗 ∈ 𝐴)
206		simplr 766	. . . . . . . . . . . 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 834	. . . . . . . . . . 11 ⊢ ((((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) ∧ 𝑘 ∈ 𝐵) ∧ 𝑧 = ⟨𝑗, 𝑘⟩) → 𝐶 ∈ (0[,]+∞))
208	203, 207	eqeltrd 2841	. . . . . . . . . 10 ⊢ ((((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) ∧ 𝑘 ∈ 𝐵) ∧ 𝑧 = ⟨𝑗, 𝑘⟩) → 𝐹 ∈ (0[,]+∞))
209		elsnxp 6193	. . . . . . . . . . . 12 ⊢ (𝑗 ∈ 𝐴 → (𝑧 ∈ ({𝑗} × 𝐵) ↔ ∃𝑘 ∈ 𝐵 𝑧 = ⟨𝑗, 𝑘⟩))
210	209	biimpa 477	. . . . . . . . . . 11 ⊢ ((𝑗 ∈ 𝐴 ∧ 𝑧 ∈ ({𝑗} × 𝐵)) → ∃𝑘 ∈ 𝐵 𝑧 = ⟨𝑗, 𝑘⟩)
211	210	adantll 711	. . . . . . . . . 10 ⊢ ((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) → ∃𝑘 ∈ 𝐵 𝑧 = ⟨𝑗, 𝑘⟩)
212	200, 202, 208, 211	r19.29af2 3261	. . . . . . . . 9 ⊢ ((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) → 𝐹 ∈ (0[,]+∞))
213		simpr 485	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) → 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵))
214		eliun 4934	. . . . . . . . . 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 3262	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) → 𝐹 ∈ (0[,]+∞))
217	192, 195, 216	syl2anc 584	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)) → 𝐹 ∈ (0[,]+∞))
218		simpll 764	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑧 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)) → 𝜑)
219		nfcv 2909	. . . . . . . . . . 11 ⊢ Ⅎ𝑗𝐴
220		nfcv 2909	. . . . . . . . . . 11 ⊢ Ⅎ𝑗𝑙
221	219, 220, 160, 162	ssiun2sf 30895	. . . . . . . . . 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 3926	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑧 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)) → 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵))
224	218, 223, 216	syl2anc 584	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑧 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)) → 𝐹 ∈ (0[,]+∞))
225	169, 170, 171, 178, 180, 191, 217, 224	esumsplit 32017	. . . . . 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	eqtrid 2792	. . . . 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 481	. . . 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 2790	. . 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 413	. 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 8931	1 ⊢ (𝜑 → Σ*𝑗 ∈ 𝐴Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)𝐹)

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 205   ∧ wa 396   = wceq 1542   ∈ wcel 2110  {cab 2717  Ⅎwnfc 2889   ≠ wne 2945  ∀wral 3066  ∃wrex 3067  ∃!wreu 3068  Vcvv 3431  [wsbc 3720  ⦋csb 3837   ∖ cdif 3889   ∪ cun 3890   ∩ cin 3891   ⊆ wss 3892  ∅c0 4262  {csn 4567  ⟨cop 4573  ∪ ciun 4930   ↦ cmpt 5162   × cxp 5588  ^◡ccnv 5589  Fun wfun 6426  ‘cfv 6432  (class class class)co 7271  1^st c1st 7822  2^nd c2nd 7823  Fincfn 8716  0cc0 10872  +∞cpnf 11007   +_𝑒 cxad 12845  [,]cicc 13081  Σ^*cesum 31991

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1802  ax-4 1816  ax-5 1917  ax-6 1975  ax-7 2015  ax-8 2112  ax-9 2120  ax-10 2141  ax-11 2158  ax-12 2175  ax-ext 2711  ax-rep 5214  ax-sep 5227  ax-nul 5234  ax-pow 5292  ax-pr 5356  ax-un 7582  ax-inf2 9377  ax-cnex 10928  ax-resscn 10929  ax-1cn 10930  ax-icn 10931  ax-addcl 10932  ax-addrcl 10933  ax-mulcl 10934  ax-mulrcl 10935  ax-mulcom 10936  ax-addass 10937  ax-mulass 10938  ax-distr 10939  ax-i2m1 10940  ax-1ne0 10941  ax-1rid 10942  ax-rnegex 10943  ax-rrecex 10944  ax-cnre 10945  ax-pre-lttri 10946  ax-pre-lttrn 10947  ax-pre-ltadd 10948  ax-pre-mulgt0 10949  ax-pre-sup 10950  ax-addf 10951  ax-mulf 10952

This theorem depends on definitions:  df-bi 206  df-an 397  df-or 845  df-3or 1087  df-3an 1088  df-tru 1545  df-fal 1555  df-ex 1787  df-nf 1791  df-sb 2072  df-mo 2542  df-eu 2571  df-clab 2718  df-cleq 2732  df-clel 2818  df-nfc 2891  df-ne 2946  df-nel 3052  df-ral 3071  df-rex 3072  df-reu 3073  df-rmo 3074  df-rab 3075  df-v 3433  df-sbc 3721  df-csb 3838  df-dif 3895  df-un 3897  df-in 3899  df-ss 3909  df-pss 3911  df-nul 4263  df-if 4466  df-pw 4541  df-sn 4568  df-pr 4570  df-tp 4572  df-op 4574  df-uni 4846  df-int 4886  df-iun 4932  df-iin 4933  df-br 5080  df-opab 5142  df-mpt 5163  df-tr 5197  df-id 5490  df-eprel 5496  df-po 5504  df-so 5505  df-fr 5545  df-se 5546  df-we 5547  df-xp 5596  df-rel 5597  df-cnv 5598  df-co 5599  df-dm 5600  df-rn 5601  df-res 5602  df-ima 5603  df-pred 6201  df-ord 6268  df-on 6269  df-lim 6270  df-suc 6271  df-iota 6390  df-fun 6434  df-fn 6435  df-f 6436  df-f1 6437  df-fo 6438  df-f1o 6439  df-fv 6440  df-isom 6441  df-riota 7228  df-ov 7274  df-oprab 7275  df-mpo 7276  df-of 7527  df-om 7707  df-1st 7824  df-2nd 7825  df-supp 7969  df-frecs 8088  df-wrecs 8119  df-recs 8193  df-rdg 8232  df-1o 8288  df-2o 8289  df-er 8481  df-map 8600  df-pm 8601  df-ixp 8669  df-en 8717  df-dom 8718  df-sdom 8719  df-fin 8720  df-fsupp 9107  df-fi 9148  df-sup 9179  df-inf 9180  df-oi 9247  df-card 9698  df-pnf 11012  df-mnf 11013  df-xr 11014  df-ltxr 11015  df-le 11016  df-sub 11207  df-neg 11208  df-div 11633  df-nn 11974  df-2 12036  df-3 12037  df-4 12038  df-5 12039  df-6 12040  df-7 12041  df-8 12042  df-9 12043  df-n0 12234  df-z 12320  df-dec 12437  df-uz 12582  df-q 12688  df-rp 12730  df-xneg 12847  df-xadd 12848  df-xmul 12849  df-ioo 13082  df-ioc 13083  df-ico 13084  df-icc 13085  df-fz 13239  df-fzo 13382  df-fl 13510  df-mod 13588  df-seq 13720  df-exp 13781  df-fac 13986  df-bc 14015  df-hash 14043  df-shft 14776  df-cj 14808  df-re 14809  df-im 14810  df-sqrt 14944  df-abs 14945  df-limsup 15178  df-clim 15195  df-rlim 15196  df-sum 15396  df-ef 15775  df-sin 15777  df-cos 15778  df-pi 15780  df-struct 16846  df-sets 16863  df-slot 16881  df-ndx 16893  df-base 16911  df-ress 16940  df-plusg 16973  df-mulr 16974  df-starv 16975  df-sca 16976  df-vsca 16977  df-ip 16978  df-tset 16979  df-ple 16980  df-ds 16982  df-unif 16983  df-hom 16984  df-cco 16985  df-rest 17131  df-topn 17132  df-0g 17150  df-gsum 17151  df-topgen 17152  df-pt 17153  df-prds 17156  df-ordt 17210  df-xrs 17211  df-qtop 17216  df-imas 17217  df-xps 17219  df-mre 17293  df-mrc 17294  df-acs 17296  df-ps 18282  df-tsr 18283  df-plusf 18323  df-mgm 18324  df-sgrp 18373  df-mnd 18384  df-mhm 18428  df-submnd 18429  df-grp 18578  df-minusg 18579  df-sbg 18580  df-mulg 18699  df-subg 18750  df-cntz 18921  df-cmn 19386  df-abl 19387  df-mgp 19719  df-ur 19736  df-ring 19783  df-cring 19784  df-subrg 20020  df-abv 20075  df-lmod 20123  df-scaf 20124  df-sra 20432  df-rgmod 20433  df-psmet 20587  df-xmet 20588  df-met 20589  df-bl 20590  df-mopn 20591  df-fbas 20592  df-fg 20593  df-cnfld 20596  df-top 22041  df-topon 22058  df-topsp 22080  df-bases 22094  df-cld 22168  df-ntr 22169  df-cls 22170  df-nei 22247  df-lp 22285  df-perf 22286  df-cn 22376  df-cnp 22377  df-haus 22464  df-tx 22711  df-hmeo 22904  df-fil 22995  df-fm 23087  df-flim 23088  df-flf 23089  df-tmd 23221  df-tgp 23222  df-tsms 23276  df-trg 23309  df-xms 23471  df-ms 23472  df-tms 23473  df-nm 23736  df-ngp 23737  df-nrg 23739  df-nlm 23740  df-ii 24038  df-cncf 24039  df-limc 25028  df-dv 25029  df-log 25710  df-esum 31992

This theorem is referenced by:  esum2d  32057