ntrclsk13 - Mathbox for Richard Penner

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Theorem ntrclsk13 44898

Description: The interior of the intersection of any pair is equal to the intersection of the interiors if and only if the closure of the unions of any pair is equal to the union of closures. (Contributed by RP, 19-Jun-2021.)

**Hypotheses**
Ref	Expression
ntrcls.o	⊢ 𝑂 = (𝑖 ∈ V ↦ (𝑘 ∈ (𝒫 𝑖 ↑_m 𝒫 𝑖) ↦ (𝑗 ∈ 𝒫 𝑖 ↦ (𝑖 ∖ (𝑘‘(𝑖 ∖ 𝑗))))))
ntrcls.d	⊢ 𝐷 = (𝑂‘𝐵)
ntrcls.r	⊢ (𝜑 → 𝐼𝐷𝐾)

**Assertion**
Ref	Expression
ntrclsk13	⊢ (𝜑 → (∀𝑠 ∈ 𝒫 𝐵∀𝑡 ∈ 𝒫 𝐵(𝐼‘(𝑠 ∩ 𝑡)) = ((𝐼‘𝑠) ∩ (𝐼‘𝑡)) ↔ ∀𝑠 ∈ 𝒫 𝐵∀𝑡 ∈ 𝒫 𝐵(𝐾‘(𝑠 ∪ 𝑡)) = ((𝐾‘𝑠) ∪ (𝐾‘𝑡))))

Distinct variable groups: 𝐵,𝑠,𝑡,𝑖,𝑗,𝑘 𝐼,𝑠,𝑡,𝑖,𝑗,𝑘 𝜑,𝑠,𝑡,𝑖,𝑗,𝑘 Allowed substitution hints: 𝐷(𝑡, 𝑖, 𝑗, 𝑘, 𝑠) 𝐾(𝑡, 𝑖, 𝑗, 𝑘, 𝑠) 𝑂(𝑡, 𝑖, 𝑗, 𝑘, 𝑠)

Proof of Theorem ntrclsk13 Dummy variables 𝑎 𝑏 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		ineq1 4162	. . . . 5 ⊢ (𝑠 = 𝑎 → (𝑠 ∩ 𝑡) = (𝑎 ∩ 𝑡))
2	1	fveq2d 6886	. . . 4 ⊢ (𝑠 = 𝑎 → (𝐼‘(𝑠 ∩ 𝑡)) = (𝐼‘(𝑎 ∩ 𝑡)))
3		fveq2 6882	. . . . 5 ⊢ (𝑠 = 𝑎 → (𝐼‘𝑠) = (𝐼‘𝑎))
4	3	ineq1d 4168	. . . 4 ⊢ (𝑠 = 𝑎 → ((𝐼‘𝑠) ∩ (𝐼‘𝑡)) = ((𝐼‘𝑎) ∩ (𝐼‘𝑡)))
5	2, 4	eqeq12d 2778	. . 3 ⊢ (𝑠 = 𝑎 → ((𝐼‘(𝑠 ∩ 𝑡)) = ((𝐼‘𝑠) ∩ (𝐼‘𝑡)) ↔ (𝐼‘(𝑎 ∩ 𝑡)) = ((𝐼‘𝑎) ∩ (𝐼‘𝑡))))
6		ineq2 4163	. . . . 5 ⊢ (𝑡 = 𝑏 → (𝑎 ∩ 𝑡) = (𝑎 ∩ 𝑏))
7	6	fveq2d 6886	. . . 4 ⊢ (𝑡 = 𝑏 → (𝐼‘(𝑎 ∩ 𝑡)) = (𝐼‘(𝑎 ∩ 𝑏)))
8		fveq2 6882	. . . . 5 ⊢ (𝑡 = 𝑏 → (𝐼‘𝑡) = (𝐼‘𝑏))
9	8	ineq2d 4169	. . . 4 ⊢ (𝑡 = 𝑏 → ((𝐼‘𝑎) ∩ (𝐼‘𝑡)) = ((𝐼‘𝑎) ∩ (𝐼‘𝑏)))
10	7, 9	eqeq12d 2778	. . 3 ⊢ (𝑡 = 𝑏 → ((𝐼‘(𝑎 ∩ 𝑡)) = ((𝐼‘𝑎) ∩ (𝐼‘𝑡)) ↔ (𝐼‘(𝑎 ∩ 𝑏)) = ((𝐼‘𝑎) ∩ (𝐼‘𝑏))))
11	5, 10	cbvral2vw 3246	. 2 ⊢ (∀𝑠 ∈ 𝒫 𝐵∀𝑡 ∈ 𝒫 𝐵(𝐼‘(𝑠 ∩ 𝑡)) = ((𝐼‘𝑠) ∩ (𝐼‘𝑡)) ↔ ∀𝑎 ∈ 𝒫 𝐵∀𝑏 ∈ 𝒫 𝐵(𝐼‘(𝑎 ∩ 𝑏)) = ((𝐼‘𝑎) ∩ (𝐼‘𝑏)))
12		ntrcls.d	. . . . . 6 ⊢ 𝐷 = (𝑂‘𝐵)
13		ntrcls.r	. . . . . 6 ⊢ (𝜑 → 𝐼𝐷𝐾)
14	12, 13	ntrclsbex 44861	. . . . 5 ⊢ (𝜑 → 𝐵 ∈ V)
15		difssd 4087	. . . . 5 ⊢ (𝜑 → (𝐵 ∖ 𝑠) ⊆ 𝐵)
16	14, 15	sselpwd 5297	. . . 4 ⊢ (𝜑 → (𝐵 ∖ 𝑠) ∈ 𝒫 𝐵)
17	16	adantr 486	. . 3 ⊢ ((𝜑 ∧ 𝑠 ∈ 𝒫 𝐵) → (𝐵 ∖ 𝑠) ∈ 𝒫 𝐵)
18		elpwi 4567	. . . 4 ⊢ (𝑎 ∈ 𝒫 𝐵 → 𝑎 ⊆ 𝐵)
19	14	adantr 486	. . . . . 6 ⊢ ((𝜑 ∧ 𝑎 ⊆ 𝐵) → 𝐵 ∈ V)
20		difssd 4087	. . . . . 6 ⊢ ((𝜑 ∧ 𝑎 ⊆ 𝐵) → (𝐵 ∖ 𝑎) ⊆ 𝐵)
21	19, 20	sselpwd 5297	. . . . 5 ⊢ ((𝜑 ∧ 𝑎 ⊆ 𝐵) → (𝐵 ∖ 𝑎) ∈ 𝒫 𝐵)
22		difeq2 4071	. . . . . . . 8 ⊢ (𝑠 = (𝐵 ∖ 𝑎) → (𝐵 ∖ 𝑠) = (𝐵 ∖ (𝐵 ∖ 𝑎)))
23	22	eqeq2d 2773	. . . . . . 7 ⊢ (𝑠 = (𝐵 ∖ 𝑎) → (𝑎 = (𝐵 ∖ 𝑠) ↔ 𝑎 = (𝐵 ∖ (𝐵 ∖ 𝑎))))
24		eqcom 2769	. . . . . . 7 ⊢ (𝑎 = (𝐵 ∖ (𝐵 ∖ 𝑎)) ↔ (𝐵 ∖ (𝐵 ∖ 𝑎)) = 𝑎)
25	23, 24	bitrdi 290	. . . . . 6 ⊢ (𝑠 = (𝐵 ∖ 𝑎) → (𝑎 = (𝐵 ∖ 𝑠) ↔ (𝐵 ∖ (𝐵 ∖ 𝑎)) = 𝑎))
26	25	adantl 487	. . . . 5 ⊢ (((𝜑 ∧ 𝑎 ⊆ 𝐵) ∧ 𝑠 = (𝐵 ∖ 𝑎)) → (𝑎 = (𝐵 ∖ 𝑠) ↔ (𝐵 ∖ (𝐵 ∖ 𝑎)) = 𝑎))
27		dfss4 4218	. . . . . 6 ⊢ (𝑎 ⊆ 𝐵 ↔ (𝐵 ∖ (𝐵 ∖ 𝑎)) = 𝑎)
28	27	bilani 510	. . . . 5 ⊢ ((𝜑 ∧ 𝑎 ⊆ 𝐵) → (𝐵 ∖ (𝐵 ∖ 𝑎)) = 𝑎)
29	21, 26, 28	rspcedvd 3581	. . . 4 ⊢ ((𝜑 ∧ 𝑎 ⊆ 𝐵) → ∃𝑠 ∈ 𝒫 𝐵𝑎 = (𝐵 ∖ 𝑠))
30	18, 29	sylan2 605	. . 3 ⊢ ((𝜑 ∧ 𝑎 ∈ 𝒫 𝐵) → ∃𝑠 ∈ 𝒫 𝐵𝑎 = (𝐵 ∖ 𝑠))
31		ineq1 4162	. . . . . . . 8 ⊢ (𝑎 = (𝐵 ∖ 𝑠) → (𝑎 ∩ 𝑏) = ((𝐵 ∖ 𝑠) ∩ 𝑏))
32	31	fveq2d 6886	. . . . . . 7 ⊢ (𝑎 = (𝐵 ∖ 𝑠) → (𝐼‘(𝑎 ∩ 𝑏)) = (𝐼‘((𝐵 ∖ 𝑠) ∩ 𝑏)))
33		fveq2 6882	. . . . . . . 8 ⊢ (𝑎 = (𝐵 ∖ 𝑠) → (𝐼‘𝑎) = (𝐼‘(𝐵 ∖ 𝑠)))
34	33	ineq1d 4168	. . . . . . 7 ⊢ (𝑎 = (𝐵 ∖ 𝑠) → ((𝐼‘𝑎) ∩ (𝐼‘𝑏)) = ((𝐼‘(𝐵 ∖ 𝑠)) ∩ (𝐼‘𝑏)))
35	32, 34	eqeq12d 2778	. . . . . 6 ⊢ (𝑎 = (𝐵 ∖ 𝑠) → ((𝐼‘(𝑎 ∩ 𝑏)) = ((𝐼‘𝑎) ∩ (𝐼‘𝑏)) ↔ (𝐼‘((𝐵 ∖ 𝑠) ∩ 𝑏)) = ((𝐼‘(𝐵 ∖ 𝑠)) ∩ (𝐼‘𝑏))))
36	35	ralbidv 3187	. . . . 5 ⊢ (𝑎 = (𝐵 ∖ 𝑠) → (∀𝑏 ∈ 𝒫 𝐵(𝐼‘(𝑎 ∩ 𝑏)) = ((𝐼‘𝑎) ∩ (𝐼‘𝑏)) ↔ ∀𝑏 ∈ 𝒫 𝐵(𝐼‘((𝐵 ∖ 𝑠) ∩ 𝑏)) = ((𝐼‘(𝐵 ∖ 𝑠)) ∩ (𝐼‘𝑏))))
37	36	3ad2ant3 1153	. . . 4 ⊢ ((𝜑 ∧ 𝑠 ∈ 𝒫 𝐵 ∧ 𝑎 = (𝐵 ∖ 𝑠)) → (∀𝑏 ∈ 𝒫 𝐵(𝐼‘(𝑎 ∩ 𝑏)) = ((𝐼‘𝑎) ∩ (𝐼‘𝑏)) ↔ ∀𝑏 ∈ 𝒫 𝐵(𝐼‘((𝐵 ∖ 𝑠) ∩ 𝑏)) = ((𝐼‘(𝐵 ∖ 𝑠)) ∩ (𝐼‘𝑏))))
38		difssd 4087	. . . . . . . 8 ⊢ (𝜑 → (𝐵 ∖ 𝑡) ⊆ 𝐵)
39	14, 38	sselpwd 5297	. . . . . . 7 ⊢ (𝜑 → (𝐵 ∖ 𝑡) ∈ 𝒫 𝐵)
40	39	ad2antrr 739	. . . . . 6 ⊢ (((𝜑 ∧ 𝑠 ∈ 𝒫 𝐵) ∧ 𝑡 ∈ 𝒫 𝐵) → (𝐵 ∖ 𝑡) ∈ 𝒫 𝐵)
41		simpll 779	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑠 ∈ 𝒫 𝐵) ∧ 𝑏 ∈ 𝒫 𝐵) → 𝜑)
42		elpwi 4567	. . . . . . . 8 ⊢ (𝑏 ∈ 𝒫 𝐵 → 𝑏 ⊆ 𝐵)
43	42	adantl 487	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑠 ∈ 𝒫 𝐵) ∧ 𝑏 ∈ 𝒫 𝐵) → 𝑏 ⊆ 𝐵)
44		difssd 4087	. . . . . . . . . 10 ⊢ (𝜑 → (𝐵 ∖ 𝑏) ⊆ 𝐵)
45	14, 44	sselpwd 5297	. . . . . . . . 9 ⊢ (𝜑 → (𝐵 ∖ 𝑏) ∈ 𝒫 𝐵)
46	45	adantr 486	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑏 ⊆ 𝐵) → (𝐵 ∖ 𝑏) ∈ 𝒫 𝐵)
47		difeq2 4071	. . . . . . . . . . 11 ⊢ (𝑡 = (𝐵 ∖ 𝑏) → (𝐵 ∖ 𝑡) = (𝐵 ∖ (𝐵 ∖ 𝑏)))
48	47	eqeq2d 2773	. . . . . . . . . 10 ⊢ (𝑡 = (𝐵 ∖ 𝑏) → (𝑏 = (𝐵 ∖ 𝑡) ↔ 𝑏 = (𝐵 ∖ (𝐵 ∖ 𝑏))))
49		eqcom 2769	. . . . . . . . . 10 ⊢ (𝑏 = (𝐵 ∖ (𝐵 ∖ 𝑏)) ↔ (𝐵 ∖ (𝐵 ∖ 𝑏)) = 𝑏)
50	48, 49	bitrdi 290	. . . . . . . . 9 ⊢ (𝑡 = (𝐵 ∖ 𝑏) → (𝑏 = (𝐵 ∖ 𝑡) ↔ (𝐵 ∖ (𝐵 ∖ 𝑏)) = 𝑏))
51	50	adantl 487	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑏 ⊆ 𝐵) ∧ 𝑡 = (𝐵 ∖ 𝑏)) → (𝑏 = (𝐵 ∖ 𝑡) ↔ (𝐵 ∖ (𝐵 ∖ 𝑏)) = 𝑏))
52		dfss4 4218	. . . . . . . . 9 ⊢ (𝑏 ⊆ 𝐵 ↔ (𝐵 ∖ (𝐵 ∖ 𝑏)) = 𝑏)
53	52	bilani 510	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝑏 ⊆ 𝐵) → (𝐵 ∖ (𝐵 ∖ 𝑏)) = 𝑏)
54	46, 51, 53	rspcedvd 3581	. . . . . . 7 ⊢ ((𝜑 ∧ 𝑏 ⊆ 𝐵) → ∃𝑡 ∈ 𝒫 𝐵𝑏 = (𝐵 ∖ 𝑡))
55	41, 43, 54	syl2anc 596	. . . . . 6 ⊢ (((𝜑 ∧ 𝑠 ∈ 𝒫 𝐵) ∧ 𝑏 ∈ 𝒫 𝐵) → ∃𝑡 ∈ 𝒫 𝐵𝑏 = (𝐵 ∖ 𝑡))
56		ineq2 4163	. . . . . . . . . . 11 ⊢ (𝑏 = (𝐵 ∖ 𝑡) → ((𝐵 ∖ 𝑠) ∩ 𝑏) = ((𝐵 ∖ 𝑠) ∩ (𝐵 ∖ 𝑡)))
57		difundi 4239	. . . . . . . . . . 11 ⊢ (𝐵 ∖ (𝑠 ∪ 𝑡)) = ((𝐵 ∖ 𝑠) ∩ (𝐵 ∖ 𝑡))
58	56, 57	eqtr4di 2815	. . . . . . . . . 10 ⊢ (𝑏 = (𝐵 ∖ 𝑡) → ((𝐵 ∖ 𝑠) ∩ 𝑏) = (𝐵 ∖ (𝑠 ∪ 𝑡)))
59	58	fveq2d 6886	. . . . . . . . 9 ⊢ (𝑏 = (𝐵 ∖ 𝑡) → (𝐼‘((𝐵 ∖ 𝑠) ∩ 𝑏)) = (𝐼‘(𝐵 ∖ (𝑠 ∪ 𝑡))))
60		fveq2 6882	. . . . . . . . . 10 ⊢ (𝑏 = (𝐵 ∖ 𝑡) → (𝐼‘𝑏) = (𝐼‘(𝐵 ∖ 𝑡)))
61	60	ineq2d 4169	. . . . . . . . 9 ⊢ (𝑏 = (𝐵 ∖ 𝑡) → ((𝐼‘(𝐵 ∖ 𝑠)) ∩ (𝐼‘𝑏)) = ((𝐼‘(𝐵 ∖ 𝑠)) ∩ (𝐼‘(𝐵 ∖ 𝑡))))
62	59, 61	eqeq12d 2778	. . . . . . . 8 ⊢ (𝑏 = (𝐵 ∖ 𝑡) → ((𝐼‘((𝐵 ∖ 𝑠) ∩ 𝑏)) = ((𝐼‘(𝐵 ∖ 𝑠)) ∩ (𝐼‘𝑏)) ↔ (𝐼‘(𝐵 ∖ (𝑠 ∪ 𝑡))) = ((𝐼‘(𝐵 ∖ 𝑠)) ∩ (𝐼‘(𝐵 ∖ 𝑡)))))
63	62	3ad2ant3 1153	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑠 ∈ 𝒫 𝐵) ∧ 𝑡 ∈ 𝒫 𝐵 ∧ 𝑏 = (𝐵 ∖ 𝑡)) → ((𝐼‘((𝐵 ∖ 𝑠) ∩ 𝑏)) = ((𝐼‘(𝐵 ∖ 𝑠)) ∩ (𝐼‘𝑏)) ↔ (𝐼‘(𝐵 ∖ (𝑠 ∪ 𝑡))) = ((𝐼‘(𝐵 ∖ 𝑠)) ∩ (𝐼‘(𝐵 ∖ 𝑡)))))
64		simp1l 1216	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝑠 ∈ 𝒫 𝐵) ∧ 𝑡 ∈ 𝒫 𝐵 ∧ 𝑏 = (𝐵 ∖ 𝑡)) → 𝜑)
65	64, 14	jccir 531	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑠 ∈ 𝒫 𝐵) ∧ 𝑡 ∈ 𝒫 𝐵 ∧ 𝑏 = (𝐵 ∖ 𝑡)) → (𝜑 ∧ 𝐵 ∈ V))
66		simp1r 1217	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑠 ∈ 𝒫 𝐵) ∧ 𝑡 ∈ 𝒫 𝐵 ∧ 𝑏 = (𝐵 ∖ 𝑡)) → 𝑠 ∈ 𝒫 𝐵)
67		simp2 1155	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝑠 ∈ 𝒫 𝐵) ∧ 𝑡 ∈ 𝒫 𝐵 ∧ 𝑏 = (𝐵 ∖ 𝑡)) → 𝑡 ∈ 𝒫 𝐵)
68		ntrcls.o	. . . . . . . . . . . . . 14 ⊢ 𝑂 = (𝑖 ∈ V ↦ (𝑘 ∈ (𝒫 𝑖 ↑_m 𝒫 𝑖) ↦ (𝑗 ∈ 𝒫 𝑖 ↦ (𝑖 ∖ (𝑘‘(𝑖 ∖ 𝑗))))))
69	68, 12, 13	ntrclsiex 44880	. . . . . . . . . . . . 13 ⊢ (𝜑 → 𝐼 ∈ (𝒫 𝐵 ↑_m 𝒫 𝐵))
70		elmapi 8851	. . . . . . . . . . . . 13 ⊢ (𝐼 ∈ (𝒫 𝐵 ↑_m 𝒫 𝐵) → 𝐼:𝒫 𝐵⟶𝒫 𝐵)
71	69, 70	syl 18	. . . . . . . . . . . 12 ⊢ (𝜑 → 𝐼:𝒫 𝐵⟶𝒫 𝐵)
72	71	anim1i 627	. . . . . . . . . . 11 ⊢ ((𝜑 ∧ 𝐵 ∈ V) → (𝐼:𝒫 𝐵⟶𝒫 𝐵 ∧ 𝐵 ∈ V))
73	72	adantr 486	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵 ∧ 𝑡 ∈ 𝒫 𝐵)) → (𝐼:𝒫 𝐵⟶𝒫 𝐵 ∧ 𝐵 ∈ V))
74		simpl 488	. . . . . . . . . . . . 13 ⊢ ((𝐼:𝒫 𝐵⟶𝒫 𝐵 ∧ 𝐵 ∈ V) → 𝐼:𝒫 𝐵⟶𝒫 𝐵)
75		simpr 490	. . . . . . . . . . . . . 14 ⊢ ((𝐼:𝒫 𝐵⟶𝒫 𝐵 ∧ 𝐵 ∈ V) → 𝐵 ∈ V)
76		difssd 4087	. . . . . . . . . . . . . 14 ⊢ ((𝐼:𝒫 𝐵⟶𝒫 𝐵 ∧ 𝐵 ∈ V) → (𝐵 ∖ (𝑠 ∪ 𝑡)) ⊆ 𝐵)
77	75, 76	sselpwd 5297	. . . . . . . . . . . . 13 ⊢ ((𝐼:𝒫 𝐵⟶𝒫 𝐵 ∧ 𝐵 ∈ V) → (𝐵 ∖ (𝑠 ∪ 𝑡)) ∈ 𝒫 𝐵)
78	74, 77	ffvelcdmd 7081	. . . . . . . . . . . 12 ⊢ ((𝐼:𝒫 𝐵⟶𝒫 𝐵 ∧ 𝐵 ∈ V) → (𝐼‘(𝐵 ∖ (𝑠 ∪ 𝑡))) ∈ 𝒫 𝐵)
79	78	elpwid 4569	. . . . . . . . . . 11 ⊢ ((𝐼:𝒫 𝐵⟶𝒫 𝐵 ∧ 𝐵 ∈ V) → (𝐼‘(𝐵 ∖ (𝑠 ∪ 𝑡))) ⊆ 𝐵)
80		difssd 4087	. . . . . . . . . . . . . . 15 ⊢ ((𝐼:𝒫 𝐵⟶𝒫 𝐵 ∧ 𝐵 ∈ V) → (𝐵 ∖ 𝑠) ⊆ 𝐵)
81	75, 80	sselpwd 5297	. . . . . . . . . . . . . 14 ⊢ ((𝐼:𝒫 𝐵⟶𝒫 𝐵 ∧ 𝐵 ∈ V) → (𝐵 ∖ 𝑠) ∈ 𝒫 𝐵)
82	74, 81	ffvelcdmd 7081	. . . . . . . . . . . . 13 ⊢ ((𝐼:𝒫 𝐵⟶𝒫 𝐵 ∧ 𝐵 ∈ V) → (𝐼‘(𝐵 ∖ 𝑠)) ∈ 𝒫 𝐵)
83	82	elpwid 4569	. . . . . . . . . . . 12 ⊢ ((𝐼:𝒫 𝐵⟶𝒫 𝐵 ∧ 𝐵 ∈ V) → (𝐼‘(𝐵 ∖ 𝑠)) ⊆ 𝐵)
84		ssinss1 4194	. . . . . . . . . . . 12 ⊢ ((𝐼‘(𝐵 ∖ 𝑠)) ⊆ 𝐵 → ((𝐼‘(𝐵 ∖ 𝑠)) ∩ (𝐼‘(𝐵 ∖ 𝑡))) ⊆ 𝐵)
85	83, 84	syl 18	. . . . . . . . . . 11 ⊢ ((𝐼:𝒫 𝐵⟶𝒫 𝐵 ∧ 𝐵 ∈ V) → ((𝐼‘(𝐵 ∖ 𝑠)) ∩ (𝐼‘(𝐵 ∖ 𝑡))) ⊆ 𝐵)
86	79, 85	jca 521	. . . . . . . . . 10 ⊢ ((𝐼:𝒫 𝐵⟶𝒫 𝐵 ∧ 𝐵 ∈ V) → ((𝐼‘(𝐵 ∖ (𝑠 ∪ 𝑡))) ⊆ 𝐵 ∧ ((𝐼‘(𝐵 ∖ 𝑠)) ∩ (𝐼‘(𝐵 ∖ 𝑡))) ⊆ 𝐵))
87		rcompleq 4254	. . . . . . . . . 10 ⊢ (((𝐼‘(𝐵 ∖ (𝑠 ∪ 𝑡))) ⊆ 𝐵 ∧ ((𝐼‘(𝐵 ∖ 𝑠)) ∩ (𝐼‘(𝐵 ∖ 𝑡))) ⊆ 𝐵) → ((𝐼‘(𝐵 ∖ (𝑠 ∪ 𝑡))) = ((𝐼‘(𝐵 ∖ 𝑠)) ∩ (𝐼‘(𝐵 ∖ 𝑡))) ↔ (𝐵 ∖ (𝐼‘(𝐵 ∖ (𝑠 ∪ 𝑡)))) = (𝐵 ∖ ((𝐼‘(𝐵 ∖ 𝑠)) ∩ (𝐼‘(𝐵 ∖ 𝑡))))))
88	73, 86, 87	3syl 19	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵 ∧ 𝑡 ∈ 𝒫 𝐵)) → ((𝐼‘(𝐵 ∖ (𝑠 ∪ 𝑡))) = ((𝐼‘(𝐵 ∖ 𝑠)) ∩ (𝐼‘(𝐵 ∖ 𝑡))) ↔ (𝐵 ∖ (𝐼‘(𝐵 ∖ (𝑠 ∪ 𝑡)))) = (𝐵 ∖ ((𝐼‘(𝐵 ∖ 𝑠)) ∩ (𝐼‘(𝐵 ∖ 𝑡))))))
89		simplr 781	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵 ∧ 𝑡 ∈ 𝒫 𝐵)) → 𝐵 ∈ V)
90	69	ad2antrr 739	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵 ∧ 𝑡 ∈ 𝒫 𝐵)) → 𝐼 ∈ (𝒫 𝐵 ↑_m 𝒫 𝐵))
91		eqid 2762	. . . . . . . . . . 11 ⊢ (𝐷‘𝐼) = (𝐷‘𝐼)
92		simprl 783	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵 ∧ 𝑡 ∈ 𝒫 𝐵)) → 𝑠 ∈ 𝒫 𝐵)
93	92	elpwid 4569	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵 ∧ 𝑡 ∈ 𝒫 𝐵)) → 𝑠 ⊆ 𝐵)
94		simprr 785	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵 ∧ 𝑡 ∈ 𝒫 𝐵)) → 𝑡 ∈ 𝒫 𝐵)
95	94	elpwid 4569	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵 ∧ 𝑡 ∈ 𝒫 𝐵)) → 𝑡 ⊆ 𝐵)
96	93, 95	unssd 4141	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵 ∧ 𝑡 ∈ 𝒫 𝐵)) → (𝑠 ∪ 𝑡) ⊆ 𝐵)
97	89, 96	sselpwd 5297	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵 ∧ 𝑡 ∈ 𝒫 𝐵)) → (𝑠 ∪ 𝑡) ∈ 𝒫 𝐵)
98		eqid 2762	. . . . . . . . . . 11 ⊢ ((𝐷‘𝐼)‘(𝑠 ∪ 𝑡)) = ((𝐷‘𝐼)‘(𝑠 ∪ 𝑡))
99	68, 12, 89, 90, 91, 97, 98	dssmapfv3d 44846	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵 ∧ 𝑡 ∈ 𝒫 𝐵)) → ((𝐷‘𝐼)‘(𝑠 ∪ 𝑡)) = (𝐵 ∖ (𝐼‘(𝐵 ∖ (𝑠 ∪ 𝑡)))))
100		simpl 488	. . . . . . . . . . . . 13 ⊢ ((𝑠 ∈ 𝒫 𝐵 ∧ 𝑡 ∈ 𝒫 𝐵) → 𝑠 ∈ 𝒫 𝐵)
101		simplr 781	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝐵 ∈ V) ∧ 𝑠 ∈ 𝒫 𝐵) → 𝐵 ∈ V)
102	69	ad2antrr 739	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝐵 ∈ V) ∧ 𝑠 ∈ 𝒫 𝐵) → 𝐼 ∈ (𝒫 𝐵 ↑_m 𝒫 𝐵))
103		simpr 490	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝐵 ∈ V) ∧ 𝑠 ∈ 𝒫 𝐵) → 𝑠 ∈ 𝒫 𝐵)
104		eqid 2762	. . . . . . . . . . . . . 14 ⊢ ((𝐷‘𝐼)‘𝑠) = ((𝐷‘𝐼)‘𝑠)
105	68, 12, 101, 102, 91, 103, 104	dssmapfv3d 44846	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝐵 ∈ V) ∧ 𝑠 ∈ 𝒫 𝐵) → ((𝐷‘𝐼)‘𝑠) = (𝐵 ∖ (𝐼‘(𝐵 ∖ 𝑠))))
106	100, 105	sylan2 605	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵 ∧ 𝑡 ∈ 𝒫 𝐵)) → ((𝐷‘𝐼)‘𝑠) = (𝐵 ∖ (𝐼‘(𝐵 ∖ 𝑠))))
107		simpr 490	. . . . . . . . . . . . 13 ⊢ ((𝑠 ∈ 𝒫 𝐵 ∧ 𝑡 ∈ 𝒫 𝐵) → 𝑡 ∈ 𝒫 𝐵)
108		simplr 781	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝐵 ∈ V) ∧ 𝑡 ∈ 𝒫 𝐵) → 𝐵 ∈ V)
109	69	ad2antrr 739	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝐵 ∈ V) ∧ 𝑡 ∈ 𝒫 𝐵) → 𝐼 ∈ (𝒫 𝐵 ↑_m 𝒫 𝐵))
110		simpr 490	. . . . . . . . . . . . . 14 ⊢ (((𝜑 ∧ 𝐵 ∈ V) ∧ 𝑡 ∈ 𝒫 𝐵) → 𝑡 ∈ 𝒫 𝐵)
111		eqid 2762	. . . . . . . . . . . . . 14 ⊢ ((𝐷‘𝐼)‘𝑡) = ((𝐷‘𝐼)‘𝑡)
112	68, 12, 108, 109, 91, 110, 111	dssmapfv3d 44846	. . . . . . . . . . . . 13 ⊢ (((𝜑 ∧ 𝐵 ∈ V) ∧ 𝑡 ∈ 𝒫 𝐵) → ((𝐷‘𝐼)‘𝑡) = (𝐵 ∖ (𝐼‘(𝐵 ∖ 𝑡))))
113	107, 112	sylan2 605	. . . . . . . . . . . 12 ⊢ (((𝜑 ∧ 𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵 ∧ 𝑡 ∈ 𝒫 𝐵)) → ((𝐷‘𝐼)‘𝑡) = (𝐵 ∖ (𝐼‘(𝐵 ∖ 𝑡))))
114	106, 113	uneq12d 4119	. . . . . . . . . . 11 ⊢ (((𝜑 ∧ 𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵 ∧ 𝑡 ∈ 𝒫 𝐵)) → (((𝐷‘𝐼)‘𝑠) ∪ ((𝐷‘𝐼)‘𝑡)) = ((𝐵 ∖ (𝐼‘(𝐵 ∖ 𝑠))) ∪ (𝐵 ∖ (𝐼‘(𝐵 ∖ 𝑡)))))
115		difindi 4241	. . . . . . . . . . 11 ⊢ (𝐵 ∖ ((𝐼‘(𝐵 ∖ 𝑠)) ∩ (𝐼‘(𝐵 ∖ 𝑡)))) = ((𝐵 ∖ (𝐼‘(𝐵 ∖ 𝑠))) ∪ (𝐵 ∖ (𝐼‘(𝐵 ∖ 𝑡))))
116	114, 115	eqtr4di 2815	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵 ∧ 𝑡 ∈ 𝒫 𝐵)) → (((𝐷‘𝐼)‘𝑠) ∪ ((𝐷‘𝐼)‘𝑡)) = (𝐵 ∖ ((𝐼‘(𝐵 ∖ 𝑠)) ∩ (𝐼‘(𝐵 ∖ 𝑡)))))
117	99, 116	eqeq12d 2778	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵 ∧ 𝑡 ∈ 𝒫 𝐵)) → (((𝐷‘𝐼)‘(𝑠 ∪ 𝑡)) = (((𝐷‘𝐼)‘𝑠) ∪ ((𝐷‘𝐼)‘𝑡)) ↔ (𝐵 ∖ (𝐼‘(𝐵 ∖ (𝑠 ∪ 𝑡)))) = (𝐵 ∖ ((𝐼‘(𝐵 ∖ 𝑠)) ∩ (𝐼‘(𝐵 ∖ 𝑡))))))
118		simpll 779	. . . . . . . . . 10 ⊢ (((𝜑 ∧ 𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵 ∧ 𝑡 ∈ 𝒫 𝐵)) → 𝜑)
119	68, 12, 13	ntrclsfv1 44882	. . . . . . . . . 10 ⊢ (𝜑 → (𝐷‘𝐼) = 𝐾)
120		fveq1 6881	. . . . . . . . . . 11 ⊢ ((𝐷‘𝐼) = 𝐾 → ((𝐷‘𝐼)‘(𝑠 ∪ 𝑡)) = (𝐾‘(𝑠 ∪ 𝑡)))
121		fveq1 6881	. . . . . . . . . . . 12 ⊢ ((𝐷‘𝐼) = 𝐾 → ((𝐷‘𝐼)‘𝑠) = (𝐾‘𝑠))
122		fveq1 6881	. . . . . . . . . . . 12 ⊢ ((𝐷‘𝐼) = 𝐾 → ((𝐷‘𝐼)‘𝑡) = (𝐾‘𝑡))
123	121, 122	uneq12d 4119	. . . . . . . . . . 11 ⊢ ((𝐷‘𝐼) = 𝐾 → (((𝐷‘𝐼)‘𝑠) ∪ ((𝐷‘𝐼)‘𝑡)) = ((𝐾‘𝑠) ∪ (𝐾‘𝑡)))
124	120, 123	eqeq12d 2778	. . . . . . . . . 10 ⊢ ((𝐷‘𝐼) = 𝐾 → (((𝐷‘𝐼)‘(𝑠 ∪ 𝑡)) = (((𝐷‘𝐼)‘𝑠) ∪ ((𝐷‘𝐼)‘𝑡)) ↔ (𝐾‘(𝑠 ∪ 𝑡)) = ((𝐾‘𝑠) ∪ (𝐾‘𝑡))))
125	118, 119, 124	3syl 19	. . . . . . . . 9 ⊢ (((𝜑 ∧ 𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵 ∧ 𝑡 ∈ 𝒫 𝐵)) → (((𝐷‘𝐼)‘(𝑠 ∪ 𝑡)) = (((𝐷‘𝐼)‘𝑠) ∪ ((𝐷‘𝐼)‘𝑡)) ↔ (𝐾‘(𝑠 ∪ 𝑡)) = ((𝐾‘𝑠) ∪ (𝐾‘𝑡))))
126	88, 117, 125	3bitr2d 310	. . . . . . . 8 ⊢ (((𝜑 ∧ 𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵 ∧ 𝑡 ∈ 𝒫 𝐵)) → ((𝐼‘(𝐵 ∖ (𝑠 ∪ 𝑡))) = ((𝐼‘(𝐵 ∖ 𝑠)) ∩ (𝐼‘(𝐵 ∖ 𝑡))) ↔ (𝐾‘(𝑠 ∪ 𝑡)) = ((𝐾‘𝑠) ∪ (𝐾‘𝑡))))
127	65, 66, 67, 126	syl12anc 850	. . . . . . 7 ⊢ (((𝜑 ∧ 𝑠 ∈ 𝒫 𝐵) ∧ 𝑡 ∈ 𝒫 𝐵 ∧ 𝑏 = (𝐵 ∖ 𝑡)) → ((𝐼‘(𝐵 ∖ (𝑠 ∪ 𝑡))) = ((𝐼‘(𝐵 ∖ 𝑠)) ∩ (𝐼‘(𝐵 ∖ 𝑡))) ↔ (𝐾‘(𝑠 ∪ 𝑡)) = ((𝐾‘𝑠) ∪ (𝐾‘𝑡))))
128	63, 127	bitrd 282	. . . . . 6 ⊢ (((𝜑 ∧ 𝑠 ∈ 𝒫 𝐵) ∧ 𝑡 ∈ 𝒫 𝐵 ∧ 𝑏 = (𝐵 ∖ 𝑡)) → ((𝐼‘((𝐵 ∖ 𝑠) ∩ 𝑏)) = ((𝐼‘(𝐵 ∖ 𝑠)) ∩ (𝐼‘𝑏)) ↔ (𝐾‘(𝑠 ∪ 𝑡)) = ((𝐾‘𝑠) ∪ (𝐾‘𝑡))))
129	40, 55, 128	ralxfrd2 5381	. . . . 5 ⊢ ((𝜑 ∧ 𝑠 ∈ 𝒫 𝐵) → (∀𝑏 ∈ 𝒫 𝐵(𝐼‘((𝐵 ∖ 𝑠) ∩ 𝑏)) = ((𝐼‘(𝐵 ∖ 𝑠)) ∩ (𝐼‘𝑏)) ↔ ∀𝑡 ∈ 𝒫 𝐵(𝐾‘(𝑠 ∪ 𝑡)) = ((𝐾‘𝑠) ∪ (𝐾‘𝑡))))
130	129	3adant3 1150	. . . 4 ⊢ ((𝜑 ∧ 𝑠 ∈ 𝒫 𝐵 ∧ 𝑎 = (𝐵 ∖ 𝑠)) → (∀𝑏 ∈ 𝒫 𝐵(𝐼‘((𝐵 ∖ 𝑠) ∩ 𝑏)) = ((𝐼‘(𝐵 ∖ 𝑠)) ∩ (𝐼‘𝑏)) ↔ ∀𝑡 ∈ 𝒫 𝐵(𝐾‘(𝑠 ∪ 𝑡)) = ((𝐾‘𝑠) ∪ (𝐾‘𝑡))))
131	37, 130	bitrd 282	. . 3 ⊢ ((𝜑 ∧ 𝑠 ∈ 𝒫 𝐵 ∧ 𝑎 = (𝐵 ∖ 𝑠)) → (∀𝑏 ∈ 𝒫 𝐵(𝐼‘(𝑎 ∩ 𝑏)) = ((𝐼‘𝑎) ∩ (𝐼‘𝑏)) ↔ ∀𝑡 ∈ 𝒫 𝐵(𝐾‘(𝑠 ∪ 𝑡)) = ((𝐾‘𝑠) ∪ (𝐾‘𝑡))))
132	17, 30, 131	ralxfrd2 5381	. 2 ⊢ (𝜑 → (∀𝑎 ∈ 𝒫 𝐵∀𝑏 ∈ 𝒫 𝐵(𝐼‘(𝑎 ∩ 𝑏)) = ((𝐼‘𝑎) ∩ (𝐼‘𝑏)) ↔ ∀𝑠 ∈ 𝒫 𝐵∀𝑡 ∈ 𝒫 𝐵(𝐾‘(𝑠 ∪ 𝑡)) = ((𝐾‘𝑠) ∪ (𝐾‘𝑡))))
133	11, 132	bitrid 286	1 ⊢ (𝜑 → (∀𝑠 ∈ 𝒫 𝐵∀𝑡 ∈ 𝒫 𝐵(𝐼‘(𝑠 ∩ 𝑡)) = ((𝐼‘𝑠) ∩ (𝐼‘𝑡)) ↔ ∀𝑠 ∈ 𝒫 𝐵∀𝑡 ∈ 𝒫 𝐵(𝐾‘(𝑠 ∪ 𝑡)) = ((𝐾‘𝑠) ∪ (𝐾‘𝑡))))

Colors of variables: wff setvar class

This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 401 ∧ w3a 1103 = wceq 1570 ∈ wcel 2145 ∀wral 3078 ∃wrex 3088 Vcvv 3453 ∖ cdif 3899 ∪ cun 3900 ∩ cin 3901 ⊆ wss 3902 𝒫 cpw 4560 class class class wbr 5107 ↦ cmpt 5190 ⟶wf 6533 ‘cfv 6537 (class class class)co 7416 ↑_m cmap 8829

This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2734 ax-rep 5236 ax-sep 5255 ax-nul 5267 ax-pow 5334 ax-pr 5402 ax-un 7739

This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3079 df-rex 3089 df-reu 3368 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-iun 4956 df-br 5108 df-opab 5172 df-mpt 5191 df-id 5554 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-ov 7419 df-oprab 7420 df-mpo 7421 df-1st 7989 df-2nd 7990 df-map 8831

This theorem is used by: (None)

W3C validator