Theorem esum2dlem 31024

Description: Lemma for esum2d 31025 (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 30966	. . 3 ⊢ (𝑎 = ∅ → Σ*𝑗 ∈ 𝑎Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑗 ∈ ∅Σ*𝑘 ∈ 𝐵𝐶)
2		nfv 1873	. . . 4 ⊢ Ⅎ𝑧 𝑎 = ∅
3		iuneq1 4803	. . . 4 ⊢ (𝑎 = ∅ → ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵) = ∪ 𝑗 ∈ ∅ ({𝑗} × 𝐵))
4	2, 3	esumeq1d 30967	. . 3 ⊢ (𝑎 = ∅ → Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵)𝐹 = Σ*𝑧 ∈ ∪ 𝑗 ∈ ∅ ({𝑗} × 𝐵)𝐹)
5	1, 4	eqeq12d 2787	. 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 30966	. . 3 ⊢ (𝑎 = 𝑏 → Σ*𝑗 ∈ 𝑎Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑗 ∈ 𝑏Σ*𝑘 ∈ 𝐵𝐶)
7		nfv 1873	. . . 4 ⊢ Ⅎ𝑧 𝑎 = 𝑏
8		iuneq1 4803	. . . 4 ⊢ (𝑎 = 𝑏 → ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵) = ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵))
9	7, 8	esumeq1d 30967	. . 3 ⊢ (𝑎 = 𝑏 → Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵)𝐹 = Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)𝐹)
10	6, 9	eqeq12d 2787	. 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 30966	. . 3 ⊢ (𝑎 = (𝑏 ∪ {𝑙}) → Σ*𝑗 ∈ 𝑎Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑗 ∈ (𝑏 ∪ {𝑙})Σ*𝑘 ∈ 𝐵𝐶)
12		nfv 1873	. . . 4 ⊢ Ⅎ𝑧 𝑎 = (𝑏 ∪ {𝑙})
13		iuneq1 4803	. . . 4 ⊢ (𝑎 = (𝑏 ∪ {𝑙}) → ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵) = ∪ 𝑗 ∈ (𝑏 ∪ {𝑙})({𝑗} × 𝐵))
14	12, 13	esumeq1d 30967	. . 3 ⊢ (𝑎 = (𝑏 ∪ {𝑙}) → Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵)𝐹 = Σ*𝑧 ∈ ∪ 𝑗 ∈ (𝑏 ∪ {𝑙})({𝑗} × 𝐵)𝐹)
15	11, 14	eqeq12d 2787	. 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 30966	. . 3 ⊢ (𝑎 = 𝐴 → Σ*𝑗 ∈ 𝑎Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑗 ∈ 𝐴Σ*𝑘 ∈ 𝐵𝐶)
17		nfv 1873	. . . 4 ⊢ Ⅎ𝑧 𝑎 = 𝐴
18		iuneq1 4803	. . . 4 ⊢ (𝑎 = 𝐴 → ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵) = ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵))
19	17, 18	esumeq1d 30967	. . 3 ⊢ (𝑎 = 𝐴 → Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝑎 ({𝑗} × 𝐵)𝐹 = Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)𝐹)
20	16, 19	eqeq12d 2787	. 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 30980	. . . 4 ⊢ Σ*𝑧 ∈ ∅𝐹 = 0
22		0iun 4848	. . . . 5 ⊢ ∪ 𝑗 ∈ ∅ ({𝑗} × 𝐵) = ∅
23		esumeq1 30966	. . . . 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 30980	. . . 4 ⊢ Σ*𝑗 ∈ ∅Σ*𝑘 ∈ 𝐵𝐶 = 0
26	21, 24, 25	3eqtr4ri 2807	. . 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 477	. . . . 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 3798	. . . . . . . . 9 ⊢ Ⅎ𝑗⦋𝑙 / 𝑗⦌𝐵
30		nfcsb1v 3798	. . . . . . . . 9 ⊢ Ⅎ𝑗⦋𝑙 / 𝑗⦌𝐶
31	29, 30	nfesum2 30973	. . . . . . . 8 ⊢ Ⅎ𝑗Σ*𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵⦋𝑙 / 𝑗⦌𝐶
32		csbeq1a 3789	. . . . . . . . . 10 ⊢ (𝑗 = 𝑙 → 𝐵 = ⦋𝑙 / 𝑗⦌𝐵)
33		csbeq1a 3789	. . . . . . . . . 10 ⊢ (𝑗 = 𝑙 → 𝐶 = ⦋𝑙 / 𝑗⦌𝐶)
34	32, 33	esumeq12d 30965	. . . . . . . . 9 ⊢ (𝑗 = 𝑙 → Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵⦋𝑙 / 𝑗⦌𝐶)
35	34	adantl 474	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 = 𝑙) → Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵⦋𝑙 / 𝑗⦌𝐶)
36		simprr 760	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → 𝑙 ∈ (𝐴 ∖ 𝑏))
37	36	eldifad 3835	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → 𝑙 ∈ 𝐴)
38		esum2d.3	. . . . . . . . . . . 12 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝐴) → 𝐵 ∈ 𝑊)
39	38	adantlr 702	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝐴) → 𝐵 ∈ 𝑊)
40	39	ralrimiva 3126	. . . . . . . . . 10 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ∀𝑗 ∈ 𝐴 𝐵 ∈ 𝑊)
41		rspcsbela 4265	. . . . . . . . . 10 ⊢ ((𝑙 ∈ 𝐴 ∧ ∀𝑗 ∈ 𝐴 𝐵 ∈ 𝑊) → ⦋𝑙 / 𝑗⦌𝐵 ∈ 𝑊)
42	37, 40, 41	syl2anc 576	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ⦋𝑙 / 𝑗⦌𝐵 ∈ 𝑊)
43		simpll 754	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵) → 𝜑)
44	37	adantr 473	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵) → 𝑙 ∈ 𝐴)
45		simpr 477	. . . . . . . . . . 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 405	. . . . . . . . . . . . . 14 ⊢ (𝜑 → ((𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐵) → 𝐶 ∈ (0[,]+∞)))
48	47	sbcimdv 3740	. . . . . . . . . . . . 13 ⊢ (𝜑 → ([𝑙 / 𝑗](𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐵) → [𝑙 / 𝑗]𝐶 ∈ (0[,]+∞)))
49		sbcan 3719	. . . . . . . . . . . . . 14 ⊢ ([𝑙 / 𝑗](𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐵) ↔ ([𝑙 / 𝑗]𝑗 ∈ 𝐴 ∧ [𝑙 / 𝑗]𝑘 ∈ 𝐵))
50		sbcel1v 3736	. . . . . . . . . . . . . . 15 ⊢ ([𝑙 / 𝑗]𝑗 ∈ 𝐴 ↔ 𝑙 ∈ 𝐴)
51		sbcel2 4247	. . . . . . . . . . . . . . 15 ⊢ ([𝑙 / 𝑗]𝑘 ∈ 𝐵 ↔ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵)
52	50, 51	anbi12i 617	. . . . . . . . . . . . . 14 ⊢ (([𝑙 / 𝑗]𝑗 ∈ 𝐴 ∧ [𝑙 / 𝑗]𝑘 ∈ 𝐵) ↔ (𝑙 ∈ 𝐴 ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵))
53	49, 52	bitri 267	. . . . . . . . . . . . 13 ⊢ ([𝑙 / 𝑗](𝑗 ∈ 𝐴 ∧ 𝑘 ∈ 𝐵) ↔ (𝑙 ∈ 𝐴 ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵))
54		vex 3412	. . . . . . . . . . . . . 14 ⊢ 𝑙 ∈ V
55		sbcel1g 4245	. . . . . . . . . . . . . 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 287	. . . . . . . . . . . 12 ⊢ (𝜑 → ((𝑙 ∈ 𝐴 ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵) → ⦋𝑙 / 𝑗⦌𝐶 ∈ (0[,]+∞)))
58	57	imp 398	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ (𝑙 ∈ 𝐴 ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵)) → ⦋𝑙 / 𝑗⦌𝐶 ∈ (0[,]+∞))
59	43, 44, 45, 58	syl12anc 824	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵) → ⦋𝑙 / 𝑗⦌𝐶 ∈ (0[,]+∞))
60	59	ralrimiva 3126	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ∀𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵⦋𝑙 / 𝑗⦌𝐶 ∈ (0[,]+∞))
61		nfcv 2926	. . . . . . . . . 10 ⊢ Ⅎ𝑘⦋𝑙 / 𝑗⦌𝐵
62	61	esumcl 30962	. . . . . . . . 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 576	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → Σ*𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵⦋𝑙 / 𝑗⦌𝐶 ∈ (0[,]+∞))
64	31, 35, 36, 63	esumsnf 30996	. . . . . . 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 1873	. . . . . . . . 9 ⊢ Ⅎ𝑘(𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏)))
67		nfv 1873	. . . . . . . . . . 11 ⊢ Ⅎ𝑗 𝑧 = ⟨𝑙, 𝑘⟩
68	30	nfeq2 2941	. . . . . . . . . . 11 ⊢ Ⅎ𝑗 𝐹 = ⦋𝑙 / 𝑗⦌𝐶
69	67, 68	nfim 1859	. . . . . . . . . 10 ⊢ Ⅎ𝑗(𝑧 = ⟨𝑙, 𝑘⟩ → 𝐹 = ⦋𝑙 / 𝑗⦌𝐶)
70		opeq1 4673	. . . . . . . . . . . 12 ⊢ (𝑗 = 𝑙 → ⟨𝑗, 𝑘⟩ = ⟨𝑙, 𝑘⟩)
71	70	eqeq2d 2782	. . . . . . . . . . 11 ⊢ (𝑗 = 𝑙 → (𝑧 = ⟨𝑗, 𝑘⟩ ↔ 𝑧 = ⟨𝑙, 𝑘⟩))
72	33	eqeq2d 2782	. . . . . . . . . . 11 ⊢ (𝑗 = 𝑙 → (𝐹 = 𝐶 ↔ 𝐹 = ⦋𝑙 / 𝑗⦌𝐶))
73	71, 72	imbi12d 337	. . . . . . . . . 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	chvar 2326	. . . . . . . . 9 ⊢ (𝑧 = ⟨𝑙, 𝑘⟩ → 𝐹 = ⦋𝑙 / 𝑗⦌𝐶)
76		vsnid 4470	. . . . . . . . . . . . . . . . 17 ⊢ 𝑗 ∈ {𝑗}
77	76	a1i 11	. . . . . . . . . . . . . . . 16 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝐴) ∧ 𝑘 ∈ 𝐵) → 𝑗 ∈ {𝑗})
78		simpr 477	. . . . . . . . . . . . . . . 16 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝐴) ∧ 𝑘 ∈ 𝐵) → 𝑘 ∈ 𝐵)
79	77, 78	opelxpd 5441	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝐴) ∧ 𝑘 ∈ 𝐵) → ⟨𝑗, 𝑘⟩ ∈ ({𝑗} × 𝐵))
80		xp2nd 7532	. . . . . . . . . . . . . . . 16 ⊢ (𝑧 ∈ ({𝑗} × 𝐵) → (2nd ‘𝑧) ∈ 𝐵)
81		xp1st 7531	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑧 ∈ ({𝑗} × 𝐵) → (1st ‘𝑧) ∈ {𝑗})
82		fvex 6509	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (1st ‘𝑧) ∈ V
83	82	elsn 4450	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((1st ‘𝑧) ∈ {𝑗} ↔ (1st ‘𝑧) = 𝑗)
84	81, 83	sylib 210	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑧 ∈ ({𝑗} × 𝐵) → (1st ‘𝑧) = 𝑗)
85		eqop 7541	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑧 ∈ ({𝑗} × 𝐵) → (𝑧 = ⟨𝑗, 𝑘⟩ ↔ ((1st ‘𝑧) = 𝑗 ∧ (2nd ‘𝑧) = 𝑘)))
86	84, 85	mpbirand 694	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑧 ∈ ({𝑗} × 𝐵) → (𝑧 = ⟨𝑗, 𝑘⟩ ↔ (2nd ‘𝑧) = 𝑘))
87		eqcom 2779	. . . . . . . . . . . . . . . . . . 19 ⊢ ((2nd ‘𝑧) = 𝑘 ↔ 𝑘 = (2nd ‘𝑧))
88	86, 87	syl6bb 279	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑧 ∈ ({𝑗} × 𝐵) → (𝑧 = ⟨𝑗, 𝑘⟩ ↔ 𝑘 = (2nd ‘𝑧)))
89	88	ad2antlr 714	. . . . . . . . . . . . . . . . 17 ⊢ ((((𝜑 ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) ∧ 𝑘 ∈ 𝐵) → (𝑧 = ⟨𝑗, 𝑘⟩ ↔ 𝑘 = (2nd ‘𝑧)))
90	89	ralrimiva 3126	. . . . . . . . . . . . . . . 16 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) → ∀𝑘 ∈ 𝐵 (𝑧 = ⟨𝑗, 𝑘⟩ ↔ 𝑘 = (2nd ‘𝑧)))
91		reu6i 3625	. . . . . . . . . . . . . . . 16 ⊢ (((2nd ‘𝑧) ∈ 𝐵 ∧ ∀𝑘 ∈ 𝐵 (𝑧 = ⟨𝑗, 𝑘⟩ ↔ 𝑘 = (2nd ‘𝑧))) → ∃!𝑘 ∈ 𝐵 𝑧 = ⟨𝑗, 𝑘⟩)
92	80, 90, 91	syl2an2 673	. . . . . . . . . . . . . . 15 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) → ∃!𝑘 ∈ 𝐵 𝑧 = ⟨𝑗, 𝑘⟩)
93	79, 92	f1mptrn 30156	. . . . . . . . . . . . . 14 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝐴) → Fun ◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩))
94	93	ex 405	. . . . . . . . . . . . 13 ⊢ (𝜑 → (𝑗 ∈ 𝐴 → Fun ◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩)))
95	94	sbcimdv 3740	. . . . . . . . . . . 12 ⊢ (𝜑 → ([𝑙 / 𝑗]𝑗 ∈ 𝐴 → [𝑙 / 𝑗]Fun ◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩)))
96		sbcfung 6209	. . . . . . . . . . . . . 14 ⊢ (𝑙 ∈ V → ([𝑙 / 𝑗]Fun ◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) ↔ Fun ⦋𝑙 / 𝑗⦌◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩)))
97		csbcnv 5600	. . . . . . . . . . . . . . . 16 ⊢ ◡⦋𝑙 / 𝑗⦌(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) = ⦋𝑙 / 𝑗⦌◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩)
98		csbmpt12 5292	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑙 ∈ V → ⦋𝑙 / 𝑗⦌(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) = (𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⦋𝑙 / 𝑗⦌⟨𝑗, 𝑘⟩))
99		csbopg 4691	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑙 ∈ V → ⦋𝑙 / 𝑗⦌⟨𝑗, 𝑘⟩ = ⟨⦋𝑙 / 𝑗⦌𝑗, ⦋𝑙 / 𝑗⦌𝑘⟩)
100		csbvarg 4261	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑙 ∈ V → ⦋𝑙 / 𝑗⦌𝑗 = 𝑙)
101		csbconstg 3793	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (𝑙 ∈ V → ⦋𝑙 / 𝑗⦌𝑘 = 𝑘)
102	100, 101	opeq12d 4681	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑙 ∈ V → ⟨⦋𝑙 / 𝑗⦌𝑗, ⦋𝑙 / 𝑗⦌𝑘⟩ = ⟨𝑙, 𝑘⟩)
103	99, 102	eqtrd 2808	. . . . . . . . . . . . . . . . . . 19 ⊢ (𝑙 ∈ V → ⦋𝑙 / 𝑗⦌⟨𝑗, 𝑘⟩ = ⟨𝑙, 𝑘⟩)
104	103	mpteq2dv 5019	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑙 ∈ V → (𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⦋𝑙 / 𝑗⦌⟨𝑗, 𝑘⟩) = (𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩))
105	98, 104	eqtrd 2808	. . . . . . . . . . . . . . . . 17 ⊢ (𝑙 ∈ V → ⦋𝑙 / 𝑗⦌(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) = (𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩))
106	105	cnveqd 5592	. . . . . . . . . . . . . . . 16 ⊢ (𝑙 ∈ V → ◡⦋𝑙 / 𝑗⦌(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) = ◡(𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩))
107	97, 106	syl5eqr 2822	. . . . . . . . . . . . . . 15 ⊢ (𝑙 ∈ V → ⦋𝑙 / 𝑗⦌◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) = ◡(𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩))
108	107	funeqd 6207	. . . . . . . . . . . . . 14 ⊢ (𝑙 ∈ V → (Fun ⦋𝑙 / 𝑗⦌◡(𝑘 ∈ 𝐵 ↦ ⟨𝑗, 𝑘⟩) ↔ Fun ◡(𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩)))
109	96, 108	bitrd 271	. . . . . . . . . . . . 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 287	. . . . . . . . . . 11 ⊢ (𝜑 → (𝑙 ∈ 𝐴 → Fun ◡(𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩)))
112	111	imp 398	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑙 ∈ 𝐴) → Fun ◡(𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩))
113	37, 112	syldan 582	. . . . . . . . 9 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → Fun ◡(𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵 ↦ ⟨𝑙, 𝑘⟩))
114		vsnid 4470	. . . . . . . . . . 11 ⊢ 𝑙 ∈ {𝑙}
115	114	a1i 11	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑘 ∈ ⦋𝑙 / 𝑗⦌𝐵) → 𝑙 ∈ {𝑙})
116	115, 45	opelxpd 5441	. . . . . . . . 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 30983	. . . . . . . 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 2928	. . . . . . . . . 10 ⊢ Ⅎ𝑡{𝑡 ∣ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩}
119		nfcv 2926	. . . . . . . . . 10 ⊢ Ⅎ𝑡({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)
120		opeq1 4673	. . . . . . . . . . . . . 14 ⊢ (𝑖 = 𝑙 → ⟨𝑖, 𝑘⟩ = ⟨𝑙, 𝑘⟩)
121	120	eqeq2d 2782	. . . . . . . . . . . . 13 ⊢ (𝑖 = 𝑙 → (𝑡 = ⟨𝑖, 𝑘⟩ ↔ 𝑡 = ⟨𝑙, 𝑘⟩))
122	121	rexbidv 3236	. . . . . . . . . . . 12 ⊢ (𝑖 = 𝑙 → (∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑖, 𝑘⟩ ↔ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩))
123	54, 122	rexsn 4490	. . . . . . . . . . 11 ⊢ (∃𝑖 ∈ {𝑙}∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑖, 𝑘⟩ ↔ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩)
124		elxp2 5427	. . . . . . . . . . 11 ⊢ (𝑡 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵) ↔ ∃𝑖 ∈ {𝑙}∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑖, 𝑘⟩)
125		abid 2756	. . . . . . . . . . 11 ⊢ (𝑡 ∈ {𝑡 ∣ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩} ↔ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩)
126	123, 124, 125	3bitr4ri 296	. . . . . . . . . 10 ⊢ (𝑡 ∈ {𝑡 ∣ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩} ↔ 𝑡 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵))
127	118, 119, 126	eqri 30026	. . . . . . . . 9 ⊢ {𝑡 ∣ ∃𝑘 ∈ ⦋ 𝑙 / 𝑗⦌𝐵𝑡 = ⟨𝑙, 𝑘⟩} = ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)
128		esumeq1 30966	. . . . . . . . 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	syl6eq 2824	. . . . . . 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 2808	. . . . . 6 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → Σ*𝑗 ∈ {𝑙}Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)𝐹)
132	131	adantr 473	. . . . 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 6992	. . . 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 1873	. . . . . 6 ⊢ Ⅎ𝑗(𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏)))
135		nfcv 2926	. . . . . 6 ⊢ Ⅎ𝑗𝑏
136		nfcv 2926	. . . . . 6 ⊢ Ⅎ𝑗{𝑙}
137		vex 3412	. . . . . . 7 ⊢ 𝑏 ∈ V
138	137	a1i 11	. . . . . 6 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → 𝑏 ∈ V)
139		snex 5184	. . . . . . 7 ⊢ {𝑙} ∈ V
140	139	a1i 11	. . . . . 6 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → {𝑙} ∈ V)
141	36	eldifbd 3836	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ¬ 𝑙 ∈ 𝑏)
142		disjsn 4517	. . . . . . 7 ⊢ ((𝑏 ∩ {𝑙}) = ∅ ↔ ¬ 𝑙 ∈ 𝑏)
143	141, 142	sylibr 226	. . . . . 6 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → (𝑏 ∩ {𝑙}) = ∅)
144		simpll 754	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → 𝜑)
145		simprl 758	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → 𝑏 ⊆ 𝐴)
146	145	sselda 3852	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → 𝑗 ∈ 𝐴)
147	46	anassrs 460	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑗 ∈ 𝐴) ∧ 𝑘 ∈ 𝐵) → 𝐶 ∈ (0[,]+∞))
148	147	ralrimiva 3126	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝐴) → ∀𝑘 ∈ 𝐵 𝐶 ∈ (0[,]+∞))
149		nfcv 2926	. . . . . . . . 9 ⊢ Ⅎ𝑘𝐵
150	149	esumcl 30962	. . . . . . . 8 ⊢ ((𝐵 ∈ 𝑊 ∧ ∀𝑘 ∈ 𝐵 𝐶 ∈ (0[,]+∞)) → Σ*𝑘 ∈ 𝐵𝐶 ∈ (0[,]+∞))
151	38, 148, 150	syl2anc 576	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑗 ∈ 𝐴) → Σ*𝑘 ∈ 𝐵𝐶 ∈ (0[,]+∞))
152	144, 146, 151	syl2anc 576	. . . . . 6 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → Σ*𝑘 ∈ 𝐵𝐶 ∈ (0[,]+∞))
153		simpll 754	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ {𝑙}) → 𝜑)
154	37	snssd 4612	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → {𝑙} ⊆ 𝐴)
155	154	sselda 3852	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ {𝑙}) → 𝑗 ∈ 𝐴)
156	153, 155, 151	syl2anc 576	. . . . . 6 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ {𝑙}) → Σ*𝑘 ∈ 𝐵𝐶 ∈ (0[,]+∞))
157	134, 135, 136, 138, 140, 143, 152, 156	esumsplit 30985	. . . . 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 473	. . . 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 4878	. . . . . . . 8 ⊢ ∪ 𝑗 ∈ (𝑏 ∪ {𝑙})({𝑗} × 𝐵) = (∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∪ ∪ 𝑗 ∈ {𝑙} ({𝑗} × 𝐵))
160	136, 29	nfxp 5436	. . . . . . . . . . 11 ⊢ Ⅎ𝑗({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)
161		sneq 4445	. . . . . . . . . . . 12 ⊢ (𝑗 = 𝑙 → {𝑗} = {𝑙})
162	161, 32	xpeq12d 5434	. . . . . . . . . . 11 ⊢ (𝑗 = 𝑙 → ({𝑗} × 𝐵) = ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵))
163	160, 162	iunxsngf 4876	. . . . . . . . . 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 4019	. . . . . . . 8 ⊢ (∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∪ ∪ 𝑗 ∈ {𝑙} ({𝑗} × 𝐵)) = (∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∪ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵))
166	159, 165	eqtri 2796	. . . . . . 7 ⊢ ∪ 𝑗 ∈ (𝑏 ∪ {𝑙})({𝑗} × 𝐵) = (∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∪ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵))
167		esumeq1 30966	. . . . . . 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 1873	. . . . . . 7 ⊢ Ⅎ𝑧(𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏)))
170		nfcv 2926	. . . . . . 7 ⊢ Ⅎ𝑧∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)
171		nfcv 2926	. . . . . . 7 ⊢ Ⅎ𝑧({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)
172		snex 5184	. . . . . . . . . 10 ⊢ {𝑗} ∈ V
173	146, 39	syldan 582	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → 𝐵 ∈ 𝑊)
174		xpexg 7288	. . . . . . . . . 10 ⊢ (({𝑗} ∈ V ∧ 𝐵 ∈ 𝑊) → ({𝑗} × 𝐵) ∈ V)
175	172, 173, 174	sylancr 578	. . . . . . . . 9 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → ({𝑗} × 𝐵) ∈ V)
176	175	ralrimiva 3126	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ∀𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∈ V)
177		iunexg 7474	. . . . . . . 8 ⊢ ((𝑏 ∈ V ∧ ∀𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∈ V) → ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∈ V)
178	137, 176, 177	sylancr 578	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∈ V)
179		xpexg 7288	. . . . . . . 8 ⊢ (({𝑙} ∈ V ∧ ⦋𝑙 / 𝑗⦌𝐵 ∈ 𝑊) → ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵) ∈ V)
180	139, 42, 179	sylancr 578	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵) ∈ V)
181		simpr 477	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → 𝑗 ∈ 𝑏)
182	141	adantr 473	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → ¬ 𝑙 ∈ 𝑏)
183		nelne2 3060	. . . . . . . . . . 11 ⊢ ((𝑗 ∈ 𝑏 ∧ ¬ 𝑙 ∈ 𝑏) → 𝑗 ≠ 𝑙)
184	181, 182, 183	syl2anc 576	. . . . . . . . . 10 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑗 ∈ 𝑏) → 𝑗 ≠ 𝑙)
185		disjsn2 4518	. . . . . . . . . 10 ⊢ (𝑗 ≠ 𝑙 → ({𝑗} ∩ {𝑙}) = ∅)
186		xpdisj1 5855	. . . . . . . . . 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 4811	. . . . . . . 8 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → ∪ 𝑗 ∈ 𝑏 (({𝑗} × 𝐵) ∩ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)) = ∪ 𝑗 ∈ 𝑏 ∅)
189	160	iunin1f 30092	. . . . . . . 8 ⊢ ∪ 𝑗 ∈ 𝑏 (({𝑗} × 𝐵) ∩ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)) = (∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∩ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵))
190		iun0 4847	. . . . . . . 8 ⊢ ∪ 𝑗 ∈ 𝑏 ∅ = ∅
191	188, 189, 190	3eqtr3g 2831	. . . . . . 7 ⊢ ((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) → (∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵) ∩ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)) = ∅)
192		simpll 754	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)) → 𝜑)
193		iunss1 4801	. . . . . . . . . 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 3852	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)) → 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵))
196		nfv 1873	. . . . . . . . . 10 ⊢ Ⅎ𝑗𝜑
197		nfiu1 4819	. . . . . . . . . . 11 ⊢ Ⅎ𝑗∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)
198	197	nfcri 2920	. . . . . . . . . 10 ⊢ Ⅎ𝑗 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)
199	196, 198	nfan 1862	. . . . . . . . 9 ⊢ Ⅎ𝑗(𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵))
200		nfv 1873	. . . . . . . . . 10 ⊢ Ⅎ𝑘(((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵))
201		nfcv 2926	. . . . . . . . . . 11 ⊢ Ⅎ𝑘(0[,]+∞)
202	65, 201	nfel 2938	. . . . . . . . . 10 ⊢ Ⅎ𝑘 𝐹 ∈ (0[,]+∞)
203	74	adantl 474	. . . . . . . . . . 11 ⊢ ((((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) ∧ 𝑘 ∈ 𝐵) ∧ 𝑧 = ⟨𝑗, 𝑘⟩) → 𝐹 = 𝐶)
204		simp-5l 772	. . . . . . . . . . . 12 ⊢ ((((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) ∧ 𝑘 ∈ 𝐵) ∧ 𝑧 = ⟨𝑗, 𝑘⟩) → 𝜑)
205		simp-4r 771	. . . . . . . . . . . 12 ⊢ ((((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) ∧ 𝑘 ∈ 𝐵) ∧ 𝑧 = ⟨𝑗, 𝑘⟩) → 𝑗 ∈ 𝐴)
206		simplr 756	. . . . . . . . . . . 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 824	. . . . . . . . . . 11 ⊢ ((((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) ∧ 𝑘 ∈ 𝐵) ∧ 𝑧 = ⟨𝑗, 𝑘⟩) → 𝐶 ∈ (0[,]+∞))
208	203, 207	eqeltrd 2860	. . . . . . . . . 10 ⊢ ((((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) ∧ 𝑘 ∈ 𝐵) ∧ 𝑧 = ⟨𝑗, 𝑘⟩) → 𝐹 ∈ (0[,]+∞))
209		elsnxp 5977	. . . . . . . . . . . 12 ⊢ (𝑗 ∈ 𝐴 → (𝑧 ∈ ({𝑗} × 𝐵) ↔ ∃𝑘 ∈ 𝐵 𝑧 = ⟨𝑗, 𝑘⟩))
210	209	biimpa 469	. . . . . . . . . . 11 ⊢ ((𝑗 ∈ 𝐴 ∧ 𝑧 ∈ ({𝑗} × 𝐵)) → ∃𝑘 ∈ 𝐵 𝑧 = ⟨𝑗, 𝑘⟩)
211	210	adantll 701	. . . . . . . . . 10 ⊢ ((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) → ∃𝑘 ∈ 𝐵 𝑧 = ⟨𝑗, 𝑘⟩)
212	200, 202, 208, 211	r19.29af2 3265	. . . . . . . . 9 ⊢ ((((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) ∧ 𝑗 ∈ 𝐴) ∧ 𝑧 ∈ ({𝑗} × 𝐵)) → 𝐹 ∈ (0[,]+∞))
213		simpr 477	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) → 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵))
214		eliun 4792	. . . . . . . . . 10 ⊢ (𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵) ↔ ∃𝑗 ∈ 𝐴 𝑧 ∈ ({𝑗} × 𝐵))
215	213, 214	sylib 210	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) → ∃𝑗 ∈ 𝐴 𝑧 ∈ ({𝑗} × 𝐵))
216	199, 212, 215	r19.29af 3266	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)) → 𝐹 ∈ (0[,]+∞))
217	192, 195, 216	syl2anc 576	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑧 ∈ ∪ 𝑗 ∈ 𝑏 ({𝑗} × 𝐵)) → 𝐹 ∈ (0[,]+∞))
218		simpll 754	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑧 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)) → 𝜑)
219		nfcv 2926	. . . . . . . . . . 11 ⊢ Ⅎ𝑗𝐴
220		nfcv 2926	. . . . . . . . . . 11 ⊢ Ⅎ𝑗𝑙
221	219, 220, 160, 162	ssiun2sf 30094	. . . . . . . . . 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 3852	. . . . . . . 8 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑧 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)) → 𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵))
224	218, 223, 216	syl2anc 576	. . . . . . 7 ⊢ (((𝜑 ∧ (𝑏 ⊆ 𝐴 ∧ 𝑙 ∈ (𝐴 ∖ 𝑏))) ∧ 𝑧 ∈ ({𝑙} × ⦋𝑙 / 𝑗⦌𝐵)) → 𝐹 ∈ (0[,]+∞))
225	169, 170, 171, 178, 180, 191, 217, 224	esumsplit 30985	. . . . . 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 2820	. . . . 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 473	. . . 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 2818	. . 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 405	. 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 8553	1 ⊢ (𝜑 → Σ*𝑗 ∈ 𝐴Σ*𝑘 ∈ 𝐵𝐶 = Σ*𝑧 ∈ ∪ 𝑗 ∈ 𝐴 ({𝑗} × 𝐵)𝐹)

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 198   ∧ wa 387   = wceq 1507   ∈ wcel 2050  {cab 2752  Ⅎwnfc 2910   ≠ wne 2961  ∀wral 3082  ∃wrex 3083  ∃!wreu 3084  Vcvv 3409  [wsbc 3675  ⦋csb 3780   ∖ cdif 3820   ∪ cun 3821   ∩ cin 3822   ⊆ wss 3823  ∅c0 4172  {csn 4435  ⟨cop 4441  ∪ ciun 4788   ↦ cmpt 5004   × cxp 5401  ^◡ccnv 5402  Fun wfun 6179  ‘cfv 6185  (class class class)co 6974  1^st c1st 7497  2^nd c2nd 7498  Fincfn 8304  0cc0 10333  +∞cpnf 10469   +_𝑒 cxad 12320  [,]cicc 12555  Σ^*cesum 30959

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1758  ax-4 1772  ax-5 1869  ax-6 1928  ax-7 1965  ax-8 2052  ax-9 2059  ax-10 2079  ax-11 2093  ax-12 2106  ax-13 2301  ax-ext 2744  ax-rep 5045  ax-sep 5056  ax-nul 5063  ax-pow 5115  ax-pr 5182  ax-un 7277  ax-inf2 8896  ax-cnex 10389  ax-resscn 10390  ax-1cn 10391  ax-icn 10392  ax-addcl 10393  ax-addrcl 10394  ax-mulcl 10395  ax-mulrcl 10396  ax-mulcom 10397  ax-addass 10398  ax-mulass 10399  ax-distr 10400  ax-i2m1 10401  ax-1ne0 10402  ax-1rid 10403  ax-rnegex 10404  ax-rrecex 10405  ax-cnre 10406  ax-pre-lttri 10407  ax-pre-lttrn 10408  ax-pre-ltadd 10409  ax-pre-mulgt0 10410  ax-pre-sup 10411  ax-addf 10412  ax-mulf 10413

This theorem depends on definitions:  df-bi 199  df-an 388  df-or 834  df-3or 1069  df-3an 1070  df-tru 1510  df-fal 1520  df-ex 1743  df-nf 1747  df-sb 2016  df-mo 2547  df-eu 2584  df-clab 2753  df-cleq 2765  df-clel 2840  df-nfc 2912  df-ne 2962  df-nel 3068  df-ral 3087  df-rex 3088  df-reu 3089  df-rmo 3090  df-rab 3091  df-v 3411  df-sbc 3676  df-csb 3781  df-dif 3826  df-un 3828  df-in 3830  df-ss 3837  df-pss 3839  df-nul 4173  df-if 4345  df-pw 4418  df-sn 4436  df-pr 4438  df-tp 4440  df-op 4442  df-uni 4709  df-int 4746  df-iun 4790  df-iin 4791  df-br 4926  df-opab 4988  df-mpt 5005  df-tr 5027  df-id 5308  df-eprel 5313  df-po 5322  df-so 5323  df-fr 5362  df-se 5363  df-we 5364  df-xp 5409  df-rel 5410  df-cnv 5411  df-co 5412  df-dm 5413  df-rn 5414  df-res 5415  df-ima 5416  df-pred 5983  df-ord 6029  df-on 6030  df-lim 6031  df-suc 6032  df-iota 6149  df-fun 6187  df-fn 6188  df-f 6189  df-f1 6190  df-fo 6191  df-f1o 6192  df-fv 6193  df-isom 6194  df-riota 6935  df-ov 6977  df-oprab 6978  df-mpo 6979  df-of 7225  df-om 7395  df-1st 7499  df-2nd 7500  df-supp 7632  df-wrecs 7748  df-recs 7810  df-rdg 7848  df-1o 7903  df-2o 7904  df-oadd 7907  df-er 8087  df-map 8206  df-pm 8207  df-ixp 8258  df-en 8305  df-dom 8306  df-sdom 8307  df-fin 8308  df-fsupp 8627  df-fi 8668  df-sup 8699  df-inf 8700  df-oi 8767  df-card 9160  df-cda 9386  df-pnf 10474  df-mnf 10475  df-xr 10476  df-ltxr 10477  df-le 10478  df-sub 10670  df-neg 10671  df-div 11097  df-nn 11438  df-2 11501  df-3 11502  df-4 11503  df-5 11504  df-6 11505  df-7 11506  df-8 11507  df-9 11508  df-n0 11706  df-z 11792  df-dec 11910  df-uz 12057  df-q 12161  df-rp 12203  df-xneg 12322  df-xadd 12323  df-xmul 12324  df-ioo 12556  df-ioc 12557  df-ico 12558  df-icc 12559  df-fz 12707  df-fzo 12848  df-fl 12975  df-mod 13051  df-seq 13183  df-exp 13243  df-fac 13447  df-bc 13476  df-hash 13504  df-shft 14285  df-cj 14317  df-re 14318  df-im 14319  df-sqrt 14453  df-abs 14454  df-limsup 14687  df-clim 14704  df-rlim 14705  df-sum 14902  df-ef 15279  df-sin 15281  df-cos 15282  df-pi 15284  df-struct 16339  df-ndx 16340  df-slot 16341  df-base 16343  df-sets 16344  df-ress 16345  df-plusg 16432  df-mulr 16433  df-starv 16434  df-sca 16435  df-vsca 16436  df-ip 16437  df-tset 16438  df-ple 16439  df-ds 16441  df-unif 16442  df-hom 16443  df-cco 16444  df-rest 16550  df-topn 16551  df-0g 16569  df-gsum 16570  df-topgen 16571  df-pt 16572  df-prds 16575  df-ordt 16628  df-xrs 16629  df-qtop 16634  df-imas 16635  df-xps 16637  df-mre 16727  df-mrc 16728  df-acs 16730  df-ps 17680  df-tsr 17681  df-plusf 17721  df-mgm 17722  df-sgrp 17764  df-mnd 17775  df-mhm 17815  df-submnd 17816  df-grp 17906  df-minusg 17907  df-sbg 17908  df-mulg 18024  df-subg 18072  df-cntz 18230  df-cmn 18680  df-abl 18681  df-mgp 18975  df-ur 18987  df-ring 19034  df-cring 19035  df-subrg 19268  df-abv 19322  df-lmod 19370  df-scaf 19371  df-sra 19678  df-rgmod 19679  df-psmet 20251  df-xmet 20252  df-met 20253  df-bl 20254  df-mopn 20255  df-fbas 20256  df-fg 20257  df-cnfld 20260  df-top 21218  df-topon 21235  df-topsp 21257  df-bases 21270  df-cld 21343  df-ntr 21344  df-cls 21345  df-nei 21422  df-lp 21460  df-perf 21461  df-cn 21551  df-cnp 21552  df-haus 21639  df-tx 21886  df-hmeo 22079  df-fil 22170  df-fm 22262  df-flim 22263  df-flf 22264  df-tmd 22396  df-tgp 22397  df-tsms 22450  df-trg 22483  df-xms 22645  df-ms 22646  df-tms 22647  df-nm 22907  df-ngp 22908  df-nrg 22910  df-nlm 22911  df-ii 23200  df-cncf 23201  df-limc 24179  df-dv 24180  df-log 24853  df-esum 30960

This theorem is referenced by:  esum2d  31025