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Theorem ntrclsk3 40288
Description: The intersection of interiors of a every pair is a subset of the interior of the intersection of the pair if an only if the closure of the union of every pair is a subset of the union of closures of the pair. (Contributed by RP, 19-Jun-2021.)
Hypotheses
Ref Expression
ntrcls.o 𝑂 = (𝑖 ∈ V ↦ (𝑘 ∈ (𝒫 𝑖m 𝒫 𝑖) ↦ (𝑗 ∈ 𝒫 𝑖 ↦ (𝑖 ∖ (𝑘‘(𝑖𝑗))))))
ntrcls.d 𝐷 = (𝑂𝐵)
ntrcls.r (𝜑𝐼𝐷𝐾)
Assertion
Ref Expression
ntrclsk3 (𝜑 → (∀𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵((𝐼𝑠) ∩ (𝐼𝑡)) ⊆ (𝐼‘(𝑠𝑡)) ↔ ∀𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵(𝐾‘(𝑠𝑡)) ⊆ ((𝐾𝑠) ∪ (𝐾𝑡))))
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 ntrclsk3
Dummy variables 𝑎 𝑏 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 fveq2 6666 . . . . 5 (𝑠 = 𝑎 → (𝐼𝑠) = (𝐼𝑎))
21ineq1d 4191 . . . 4 (𝑠 = 𝑎 → ((𝐼𝑠) ∩ (𝐼𝑡)) = ((𝐼𝑎) ∩ (𝐼𝑡)))
3 ineq1 4184 . . . . 5 (𝑠 = 𝑎 → (𝑠𝑡) = (𝑎𝑡))
43fveq2d 6670 . . . 4 (𝑠 = 𝑎 → (𝐼‘(𝑠𝑡)) = (𝐼‘(𝑎𝑡)))
52, 4sseq12d 4003 . . 3 (𝑠 = 𝑎 → (((𝐼𝑠) ∩ (𝐼𝑡)) ⊆ (𝐼‘(𝑠𝑡)) ↔ ((𝐼𝑎) ∩ (𝐼𝑡)) ⊆ (𝐼‘(𝑎𝑡))))
6 fveq2 6666 . . . . 5 (𝑡 = 𝑏 → (𝐼𝑡) = (𝐼𝑏))
76ineq2d 4192 . . . 4 (𝑡 = 𝑏 → ((𝐼𝑎) ∩ (𝐼𝑡)) = ((𝐼𝑎) ∩ (𝐼𝑏)))
8 ineq2 4186 . . . . 5 (𝑡 = 𝑏 → (𝑎𝑡) = (𝑎𝑏))
98fveq2d 6670 . . . 4 (𝑡 = 𝑏 → (𝐼‘(𝑎𝑡)) = (𝐼‘(𝑎𝑏)))
107, 9sseq12d 4003 . . 3 (𝑡 = 𝑏 → (((𝐼𝑎) ∩ (𝐼𝑡)) ⊆ (𝐼‘(𝑎𝑡)) ↔ ((𝐼𝑎) ∩ (𝐼𝑏)) ⊆ (𝐼‘(𝑎𝑏))))
115, 10cbvral2v 3469 . 2 (∀𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵((𝐼𝑠) ∩ (𝐼𝑡)) ⊆ (𝐼‘(𝑠𝑡)) ↔ ∀𝑎 ∈ 𝒫 𝐵𝑏 ∈ 𝒫 𝐵((𝐼𝑎) ∩ (𝐼𝑏)) ⊆ (𝐼‘(𝑎𝑏)))
12 ntrcls.d . . . . . 6 𝐷 = (𝑂𝐵)
13 ntrcls.r . . . . . 6 (𝜑𝐼𝐷𝐾)
1412, 13ntrclsbex 40252 . . . . 5 (𝜑𝐵 ∈ V)
15 difssd 4112 . . . . 5 (𝜑 → (𝐵𝑠) ⊆ 𝐵)
1614, 15sselpwd 5226 . . . 4 (𝜑 → (𝐵𝑠) ∈ 𝒫 𝐵)
1716adantr 481 . . 3 ((𝜑𝑠 ∈ 𝒫 𝐵) → (𝐵𝑠) ∈ 𝒫 𝐵)
18 elpwi 4553 . . . 4 (𝑎 ∈ 𝒫 𝐵𝑎𝐵)
19 simpl 483 . . . . . 6 ((𝐵 ∈ V ∧ 𝑎𝐵) → 𝐵 ∈ V)
20 difssd 4112 . . . . . 6 ((𝐵 ∈ V ∧ 𝑎𝐵) → (𝐵𝑎) ⊆ 𝐵)
2119, 20sselpwd 5226 . . . . 5 ((𝐵 ∈ V ∧ 𝑎𝐵) → (𝐵𝑎) ∈ 𝒫 𝐵)
22 simpr 485 . . . . . . . 8 (((𝐵 ∈ V ∧ 𝑎𝐵) ∧ 𝑠 = (𝐵𝑎)) → 𝑠 = (𝐵𝑎))
2322difeq2d 4102 . . . . . . 7 (((𝐵 ∈ V ∧ 𝑎𝐵) ∧ 𝑠 = (𝐵𝑎)) → (𝐵𝑠) = (𝐵 ∖ (𝐵𝑎)))
2423eqeq2d 2836 . . . . . 6 (((𝐵 ∈ V ∧ 𝑎𝐵) ∧ 𝑠 = (𝐵𝑎)) → (𝑎 = (𝐵𝑠) ↔ 𝑎 = (𝐵 ∖ (𝐵𝑎))))
25 eqcom 2832 . . . . . 6 (𝑎 = (𝐵 ∖ (𝐵𝑎)) ↔ (𝐵 ∖ (𝐵𝑎)) = 𝑎)
2624, 25syl6bb 288 . . . . 5 (((𝐵 ∈ V ∧ 𝑎𝐵) ∧ 𝑠 = (𝐵𝑎)) → (𝑎 = (𝐵𝑠) ↔ (𝐵 ∖ (𝐵𝑎)) = 𝑎))
27 dfss4 4238 . . . . . . 7 (𝑎𝐵 ↔ (𝐵 ∖ (𝐵𝑎)) = 𝑎)
2827biimpi 217 . . . . . 6 (𝑎𝐵 → (𝐵 ∖ (𝐵𝑎)) = 𝑎)
2928adantl 482 . . . . 5 ((𝐵 ∈ V ∧ 𝑎𝐵) → (𝐵 ∖ (𝐵𝑎)) = 𝑎)
3021, 26, 29rspcedvd 3629 . . . 4 ((𝐵 ∈ V ∧ 𝑎𝐵) → ∃𝑠 ∈ 𝒫 𝐵𝑎 = (𝐵𝑠))
3114, 18, 30syl2an 595 . . 3 ((𝜑𝑎 ∈ 𝒫 𝐵) → ∃𝑠 ∈ 𝒫 𝐵𝑎 = (𝐵𝑠))
32 simpl1 1185 . . . . 5 (((𝜑𝑠 ∈ 𝒫 𝐵𝑎 = (𝐵𝑠)) ∧ 𝑡 ∈ 𝒫 𝐵) → 𝜑)
33 difssd 4112 . . . . . 6 (𝜑 → (𝐵𝑡) ⊆ 𝐵)
3414, 33sselpwd 5226 . . . . 5 (𝜑 → (𝐵𝑡) ∈ 𝒫 𝐵)
3532, 34syl 17 . . . 4 (((𝜑𝑠 ∈ 𝒫 𝐵𝑎 = (𝐵𝑠)) ∧ 𝑡 ∈ 𝒫 𝐵) → (𝐵𝑡) ∈ 𝒫 𝐵)
36 elpwi 4553 . . . . . 6 (𝑏 ∈ 𝒫 𝐵𝑏𝐵)
37 simpl 483 . . . . . . . 8 ((𝐵 ∈ V ∧ 𝑏𝐵) → 𝐵 ∈ V)
38 difssd 4112 . . . . . . . 8 ((𝐵 ∈ V ∧ 𝑏𝐵) → (𝐵𝑏) ⊆ 𝐵)
3937, 38sselpwd 5226 . . . . . . 7 ((𝐵 ∈ V ∧ 𝑏𝐵) → (𝐵𝑏) ∈ 𝒫 𝐵)
40 simpr 485 . . . . . . . . . 10 (((𝐵 ∈ V ∧ 𝑏𝐵) ∧ 𝑡 = (𝐵𝑏)) → 𝑡 = (𝐵𝑏))
4140difeq2d 4102 . . . . . . . . 9 (((𝐵 ∈ V ∧ 𝑏𝐵) ∧ 𝑡 = (𝐵𝑏)) → (𝐵𝑡) = (𝐵 ∖ (𝐵𝑏)))
4241eqeq2d 2836 . . . . . . . 8 (((𝐵 ∈ V ∧ 𝑏𝐵) ∧ 𝑡 = (𝐵𝑏)) → (𝑏 = (𝐵𝑡) ↔ 𝑏 = (𝐵 ∖ (𝐵𝑏))))
43 eqcom 2832 . . . . . . . 8 (𝑏 = (𝐵 ∖ (𝐵𝑏)) ↔ (𝐵 ∖ (𝐵𝑏)) = 𝑏)
4442, 43syl6bb 288 . . . . . . 7 (((𝐵 ∈ V ∧ 𝑏𝐵) ∧ 𝑡 = (𝐵𝑏)) → (𝑏 = (𝐵𝑡) ↔ (𝐵 ∖ (𝐵𝑏)) = 𝑏))
45 dfss4 4238 . . . . . . . . 9 (𝑏𝐵 ↔ (𝐵 ∖ (𝐵𝑏)) = 𝑏)
4645biimpi 217 . . . . . . . 8 (𝑏𝐵 → (𝐵 ∖ (𝐵𝑏)) = 𝑏)
4746adantl 482 . . . . . . 7 ((𝐵 ∈ V ∧ 𝑏𝐵) → (𝐵 ∖ (𝐵𝑏)) = 𝑏)
4839, 44, 47rspcedvd 3629 . . . . . 6 ((𝐵 ∈ V ∧ 𝑏𝐵) → ∃𝑡 ∈ 𝒫 𝐵𝑏 = (𝐵𝑡))
4914, 36, 48syl2an 595 . . . . 5 ((𝜑𝑏 ∈ 𝒫 𝐵) → ∃𝑡 ∈ 𝒫 𝐵𝑏 = (𝐵𝑡))
50493ad2antl1 1179 . . . 4 (((𝜑𝑠 ∈ 𝒫 𝐵𝑎 = (𝐵𝑠)) ∧ 𝑏 ∈ 𝒫 𝐵) → ∃𝑡 ∈ 𝒫 𝐵𝑏 = (𝐵𝑡))
51 simp13 1199 . . . . . 6 (((𝜑𝑠 ∈ 𝒫 𝐵𝑎 = (𝐵𝑠)) ∧ 𝑡 ∈ 𝒫 𝐵𝑏 = (𝐵𝑡)) → 𝑎 = (𝐵𝑠))
52 fveq2 6666 . . . . . . . 8 (𝑎 = (𝐵𝑠) → (𝐼𝑎) = (𝐼‘(𝐵𝑠)))
5352ineq1d 4191 . . . . . . 7 (𝑎 = (𝐵𝑠) → ((𝐼𝑎) ∩ (𝐼𝑏)) = ((𝐼‘(𝐵𝑠)) ∩ (𝐼𝑏)))
54 ineq1 4184 . . . . . . . 8 (𝑎 = (𝐵𝑠) → (𝑎𝑏) = ((𝐵𝑠) ∩ 𝑏))
5554fveq2d 6670 . . . . . . 7 (𝑎 = (𝐵𝑠) → (𝐼‘(𝑎𝑏)) = (𝐼‘((𝐵𝑠) ∩ 𝑏)))
5653, 55sseq12d 4003 . . . . . 6 (𝑎 = (𝐵𝑠) → (((𝐼𝑎) ∩ (𝐼𝑏)) ⊆ (𝐼‘(𝑎𝑏)) ↔ ((𝐼‘(𝐵𝑠)) ∩ (𝐼𝑏)) ⊆ (𝐼‘((𝐵𝑠) ∩ 𝑏))))
5751, 56syl 17 . . . . 5 (((𝜑𝑠 ∈ 𝒫 𝐵𝑎 = (𝐵𝑠)) ∧ 𝑡 ∈ 𝒫 𝐵𝑏 = (𝐵𝑡)) → (((𝐼𝑎) ∩ (𝐼𝑏)) ⊆ (𝐼‘(𝑎𝑏)) ↔ ((𝐼‘(𝐵𝑠)) ∩ (𝐼𝑏)) ⊆ (𝐼‘((𝐵𝑠) ∩ 𝑏))))
58 fveq2 6666 . . . . . . . 8 (𝑏 = (𝐵𝑡) → (𝐼𝑏) = (𝐼‘(𝐵𝑡)))
5958ineq2d 4192 . . . . . . 7 (𝑏 = (𝐵𝑡) → ((𝐼‘(𝐵𝑠)) ∩ (𝐼𝑏)) = ((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡))))
60 ineq2 4186 . . . . . . . . 9 (𝑏 = (𝐵𝑡) → ((𝐵𝑠) ∩ 𝑏) = ((𝐵𝑠) ∩ (𝐵𝑡)))
61 difundi 4259 . . . . . . . . 9 (𝐵 ∖ (𝑠𝑡)) = ((𝐵𝑠) ∩ (𝐵𝑡))
6260, 61syl6eqr 2878 . . . . . . . 8 (𝑏 = (𝐵𝑡) → ((𝐵𝑠) ∩ 𝑏) = (𝐵 ∖ (𝑠𝑡)))
6362fveq2d 6670 . . . . . . 7 (𝑏 = (𝐵𝑡) → (𝐼‘((𝐵𝑠) ∩ 𝑏)) = (𝐼‘(𝐵 ∖ (𝑠𝑡))))
6459, 63sseq12d 4003 . . . . . 6 (𝑏 = (𝐵𝑡) → (((𝐼‘(𝐵𝑠)) ∩ (𝐼𝑏)) ⊆ (𝐼‘((𝐵𝑠) ∩ 𝑏)) ↔ ((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡))) ⊆ (𝐼‘(𝐵 ∖ (𝑠𝑡)))))
65643ad2ant3 1129 . . . . 5 (((𝜑𝑠 ∈ 𝒫 𝐵𝑎 = (𝐵𝑠)) ∧ 𝑡 ∈ 𝒫 𝐵𝑏 = (𝐵𝑡)) → (((𝐼‘(𝐵𝑠)) ∩ (𝐼𝑏)) ⊆ (𝐼‘((𝐵𝑠) ∩ 𝑏)) ↔ ((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡))) ⊆ (𝐼‘(𝐵 ∖ (𝑠𝑡)))))
66 simp11 1197 . . . . . . . 8 (((𝜑𝑠 ∈ 𝒫 𝐵𝑎 = (𝐵𝑠)) ∧ 𝑡 ∈ 𝒫 𝐵𝑏 = (𝐵𝑡)) → 𝜑)
67 ntrcls.o . . . . . . . . . 10 𝑂 = (𝑖 ∈ V ↦ (𝑘 ∈ (𝒫 𝑖m 𝒫 𝑖) ↦ (𝑗 ∈ 𝒫 𝑖 ↦ (𝑖 ∖ (𝑘‘(𝑖𝑗))))))
6867, 12, 13ntrclsiex 40271 . . . . . . . . 9 (𝜑𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵))
6968, 14jca 512 . . . . . . . 8 (𝜑 → (𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵) ∧ 𝐵 ∈ V))
7066, 69syl 17 . . . . . . 7 (((𝜑𝑠 ∈ 𝒫 𝐵𝑎 = (𝐵𝑠)) ∧ 𝑡 ∈ 𝒫 𝐵𝑏 = (𝐵𝑡)) → (𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵) ∧ 𝐵 ∈ V))
71 elmapi 8421 . . . . . . . . . . . 12 (𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵) → 𝐼:𝒫 𝐵⟶𝒫 𝐵)
7271adantr 481 . . . . . . . . . . 11 ((𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵) ∧ 𝐵 ∈ V) → 𝐼:𝒫 𝐵⟶𝒫 𝐵)
73 simpr 485 . . . . . . . . . . . 12 ((𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵) ∧ 𝐵 ∈ V) → 𝐵 ∈ V)
74 difssd 4112 . . . . . . . . . . . 12 ((𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵) ∧ 𝐵 ∈ V) → (𝐵𝑠) ⊆ 𝐵)
7573, 74sselpwd 5226 . . . . . . . . . . 11 ((𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵) ∧ 𝐵 ∈ V) → (𝐵𝑠) ∈ 𝒫 𝐵)
7672, 75ffvelrnd 6847 . . . . . . . . . 10 ((𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵) ∧ 𝐵 ∈ V) → (𝐼‘(𝐵𝑠)) ∈ 𝒫 𝐵)
7776elpwid 4555 . . . . . . . . 9 ((𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵) ∧ 𝐵 ∈ V) → (𝐼‘(𝐵𝑠)) ⊆ 𝐵)
78 orc 863 . . . . . . . . 9 ((𝐼‘(𝐵𝑠)) ⊆ 𝐵 → ((𝐼‘(𝐵𝑠)) ⊆ 𝐵 ∨ (𝐼‘(𝐵𝑡)) ⊆ 𝐵))
79 inss 4218 . . . . . . . . 9 (((𝐼‘(𝐵𝑠)) ⊆ 𝐵 ∨ (𝐼‘(𝐵𝑡)) ⊆ 𝐵) → ((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡))) ⊆ 𝐵)
8077, 78, 793syl 18 . . . . . . . 8 ((𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵) ∧ 𝐵 ∈ V) → ((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡))) ⊆ 𝐵)
81 difssd 4112 . . . . . . . . . . 11 ((𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵) ∧ 𝐵 ∈ V) → (𝐵 ∖ (𝑠𝑡)) ⊆ 𝐵)
8273, 81sselpwd 5226 . . . . . . . . . 10 ((𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵) ∧ 𝐵 ∈ V) → (𝐵 ∖ (𝑠𝑡)) ∈ 𝒫 𝐵)
8372, 82ffvelrnd 6847 . . . . . . . . 9 ((𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵) ∧ 𝐵 ∈ V) → (𝐼‘(𝐵 ∖ (𝑠𝑡))) ∈ 𝒫 𝐵)
8483elpwid 4555 . . . . . . . 8 ((𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵) ∧ 𝐵 ∈ V) → (𝐼‘(𝐵 ∖ (𝑠𝑡))) ⊆ 𝐵)
8580, 84jca 512 . . . . . . 7 ((𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵) ∧ 𝐵 ∈ V) → (((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡))) ⊆ 𝐵 ∧ (𝐼‘(𝐵 ∖ (𝑠𝑡))) ⊆ 𝐵))
86 sscon34b 40237 . . . . . . 7 ((((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡))) ⊆ 𝐵 ∧ (𝐼‘(𝐵 ∖ (𝑠𝑡))) ⊆ 𝐵) → (((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡))) ⊆ (𝐼‘(𝐵 ∖ (𝑠𝑡))) ↔ (𝐵 ∖ (𝐼‘(𝐵 ∖ (𝑠𝑡)))) ⊆ (𝐵 ∖ ((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡))))))
8770, 85, 863syl 18 . . . . . 6 (((𝜑𝑠 ∈ 𝒫 𝐵𝑎 = (𝐵𝑠)) ∧ 𝑡 ∈ 𝒫 𝐵𝑏 = (𝐵𝑡)) → (((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡))) ⊆ (𝐼‘(𝐵 ∖ (𝑠𝑡))) ↔ (𝐵 ∖ (𝐼‘(𝐵 ∖ (𝑠𝑡)))) ⊆ (𝐵 ∖ ((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡))))))
88 difindi 4261 . . . . . . . 8 (𝐵 ∖ ((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡)))) = ((𝐵 ∖ (𝐼‘(𝐵𝑠))) ∪ (𝐵 ∖ (𝐼‘(𝐵𝑡))))
8988sseq2i 3999 . . . . . . 7 ((𝐵 ∖ (𝐼‘(𝐵 ∖ (𝑠𝑡)))) ⊆ (𝐵 ∖ ((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡)))) ↔ (𝐵 ∖ (𝐼‘(𝐵 ∖ (𝑠𝑡)))) ⊆ ((𝐵 ∖ (𝐼‘(𝐵𝑠))) ∪ (𝐵 ∖ (𝐼‘(𝐵𝑡)))))
9089a1i 11 . . . . . 6 (((𝜑𝑠 ∈ 𝒫 𝐵𝑎 = (𝐵𝑠)) ∧ 𝑡 ∈ 𝒫 𝐵𝑏 = (𝐵𝑡)) → ((𝐵 ∖ (𝐼‘(𝐵 ∖ (𝑠𝑡)))) ⊆ (𝐵 ∖ ((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡)))) ↔ (𝐵 ∖ (𝐼‘(𝐵 ∖ (𝑠𝑡)))) ⊆ ((𝐵 ∖ (𝐼‘(𝐵𝑠))) ∪ (𝐵 ∖ (𝐼‘(𝐵𝑡))))))
9166, 14syl 17 . . . . . . 7 (((𝜑𝑠 ∈ 𝒫 𝐵𝑎 = (𝐵𝑠)) ∧ 𝑡 ∈ 𝒫 𝐵𝑏 = (𝐵𝑡)) → 𝐵 ∈ V)
9266, 68syl 17 . . . . . . 7 (((𝜑𝑠 ∈ 𝒫 𝐵𝑎 = (𝐵𝑠)) ∧ 𝑡 ∈ 𝒫 𝐵𝑏 = (𝐵𝑡)) → 𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵))
93 simp12 1198 . . . . . . 7 (((𝜑𝑠 ∈ 𝒫 𝐵𝑎 = (𝐵𝑠)) ∧ 𝑡 ∈ 𝒫 𝐵𝑏 = (𝐵𝑡)) → 𝑠 ∈ 𝒫 𝐵)
94 rp-simp2 40007 . . . . . . 7 (((𝜑𝑠 ∈ 𝒫 𝐵𝑎 = (𝐵𝑠)) ∧ 𝑡 ∈ 𝒫 𝐵𝑏 = (𝐵𝑡)) → 𝑡 ∈ 𝒫 𝐵)
95 simpl2 1186 . . . . . . . . . 10 (((𝜑𝐵 ∈ V ∧ 𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵)) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → 𝐵 ∈ V)
96 simpl3 1187 . . . . . . . . . 10 (((𝜑𝐵 ∈ V ∧ 𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵)) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → 𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵))
97 eqid 2825 . . . . . . . . . 10 (𝐷𝐼) = (𝐷𝐼)
98 simpl 483 . . . . . . . . . . . 12 ((𝐵 ∈ V ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → 𝐵 ∈ V)
99 simprl 767 . . . . . . . . . . . . . 14 ((𝐵 ∈ V ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → 𝑠 ∈ 𝒫 𝐵)
10099elpwid 4555 . . . . . . . . . . . . 13 ((𝐵 ∈ V ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → 𝑠𝐵)
101 simprr 769 . . . . . . . . . . . . . 14 ((𝐵 ∈ V ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → 𝑡 ∈ 𝒫 𝐵)
102101elpwid 4555 . . . . . . . . . . . . 13 ((𝐵 ∈ V ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → 𝑡𝐵)
103100, 102unssd 4165 . . . . . . . . . . . 12 ((𝐵 ∈ V ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → (𝑠𝑡) ⊆ 𝐵)
10498, 103sselpwd 5226 . . . . . . . . . . 11 ((𝐵 ∈ V ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → (𝑠𝑡) ∈ 𝒫 𝐵)
1051043ad2antl2 1180 . . . . . . . . . 10 (((𝜑𝐵 ∈ V ∧ 𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵)) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → (𝑠𝑡) ∈ 𝒫 𝐵)
106 eqid 2825 . . . . . . . . . 10 ((𝐷𝐼)‘(𝑠𝑡)) = ((𝐷𝐼)‘(𝑠𝑡))
10767, 12, 95, 96, 97, 105, 106dssmapfv3d 40233 . . . . . . . . 9 (((𝜑𝐵 ∈ V ∧ 𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵)) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → ((𝐷𝐼)‘(𝑠𝑡)) = (𝐵 ∖ (𝐼‘(𝐵 ∖ (𝑠𝑡)))))
108 simpl1 1185 . . . . . . . . . 10 (((𝜑𝐵 ∈ V ∧ 𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵)) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → 𝜑)
10967, 12, 13ntrclsfv1 40273 . . . . . . . . . . 11 (𝜑 → (𝐷𝐼) = 𝐾)
110109fveq1d 6668 . . . . . . . . . 10 (𝜑 → ((𝐷𝐼)‘(𝑠𝑡)) = (𝐾‘(𝑠𝑡)))
111108, 110syl 17 . . . . . . . . 9 (((𝜑𝐵 ∈ V ∧ 𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵)) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → ((𝐷𝐼)‘(𝑠𝑡)) = (𝐾‘(𝑠𝑡)))
112107, 111eqtr3d 2862 . . . . . . . 8 (((𝜑𝐵 ∈ V ∧ 𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵)) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → (𝐵 ∖ (𝐼‘(𝐵 ∖ (𝑠𝑡)))) = (𝐾‘(𝑠𝑡)))
113 simprl 767 . . . . . . . . . . 11 (((𝜑𝐵 ∈ V ∧ 𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵)) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → 𝑠 ∈ 𝒫 𝐵)
114 eqid 2825 . . . . . . . . . . 11 ((𝐷𝐼)‘𝑠) = ((𝐷𝐼)‘𝑠)
11567, 12, 95, 96, 97, 113, 114dssmapfv3d 40233 . . . . . . . . . 10 (((𝜑𝐵 ∈ V ∧ 𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵)) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → ((𝐷𝐼)‘𝑠) = (𝐵 ∖ (𝐼‘(𝐵𝑠))))
116109fveq1d 6668 . . . . . . . . . . 11 (𝜑 → ((𝐷𝐼)‘𝑠) = (𝐾𝑠))
117108, 116syl 17 . . . . . . . . . 10 (((𝜑𝐵 ∈ V ∧ 𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵)) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → ((𝐷𝐼)‘𝑠) = (𝐾𝑠))
118115, 117eqtr3d 2862 . . . . . . . . 9 (((𝜑𝐵 ∈ V ∧ 𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵)) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → (𝐵 ∖ (𝐼‘(𝐵𝑠))) = (𝐾𝑠))
119 simprr 769 . . . . . . . . . . 11 (((𝜑𝐵 ∈ V ∧ 𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵)) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → 𝑡 ∈ 𝒫 𝐵)
120 eqid 2825 . . . . . . . . . . 11 ((𝐷𝐼)‘𝑡) = ((𝐷𝐼)‘𝑡)
12167, 12, 95, 96, 97, 119, 120dssmapfv3d 40233 . . . . . . . . . 10 (((𝜑𝐵 ∈ V ∧ 𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵)) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → ((𝐷𝐼)‘𝑡) = (𝐵 ∖ (𝐼‘(𝐵𝑡))))
122109fveq1d 6668 . . . . . . . . . . 11 (𝜑 → ((𝐷𝐼)‘𝑡) = (𝐾𝑡))
123108, 122syl 17 . . . . . . . . . 10 (((𝜑𝐵 ∈ V ∧ 𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵)) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → ((𝐷𝐼)‘𝑡) = (𝐾𝑡))
124121, 123eqtr3d 2862 . . . . . . . . 9 (((𝜑𝐵 ∈ V ∧ 𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵)) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → (𝐵 ∖ (𝐼‘(𝐵𝑡))) = (𝐾𝑡))
125118, 124uneq12d 4143 . . . . . . . 8 (((𝜑𝐵 ∈ V ∧ 𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵)) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → ((𝐵 ∖ (𝐼‘(𝐵𝑠))) ∪ (𝐵 ∖ (𝐼‘(𝐵𝑡)))) = ((𝐾𝑠) ∪ (𝐾𝑡)))
126112, 125sseq12d 4003 . . . . . . 7 (((𝜑𝐵 ∈ V ∧ 𝐼 ∈ (𝒫 𝐵m 𝒫 𝐵)) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → ((𝐵 ∖ (𝐼‘(𝐵 ∖ (𝑠𝑡)))) ⊆ ((𝐵 ∖ (𝐼‘(𝐵𝑠))) ∪ (𝐵 ∖ (𝐼‘(𝐵𝑡)))) ↔ (𝐾‘(𝑠𝑡)) ⊆ ((𝐾𝑠) ∪ (𝐾𝑡))))
12766, 91, 92, 93, 94, 126syl32anc 1372 . . . . . 6 (((𝜑𝑠 ∈ 𝒫 𝐵𝑎 = (𝐵𝑠)) ∧ 𝑡 ∈ 𝒫 𝐵𝑏 = (𝐵𝑡)) → ((𝐵 ∖ (𝐼‘(𝐵 ∖ (𝑠𝑡)))) ⊆ ((𝐵 ∖ (𝐼‘(𝐵𝑠))) ∪ (𝐵 ∖ (𝐼‘(𝐵𝑡)))) ↔ (𝐾‘(𝑠𝑡)) ⊆ ((𝐾𝑠) ∪ (𝐾𝑡))))
12887, 90, 1273bitrd 306 . . . . 5 (((𝜑𝑠 ∈ 𝒫 𝐵𝑎 = (𝐵𝑠)) ∧ 𝑡 ∈ 𝒫 𝐵𝑏 = (𝐵𝑡)) → (((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡))) ⊆ (𝐼‘(𝐵 ∖ (𝑠𝑡))) ↔ (𝐾‘(𝑠𝑡)) ⊆ ((𝐾𝑠) ∪ (𝐾𝑡))))
12957, 65, 1283bitrd 306 . . . 4 (((𝜑𝑠 ∈ 𝒫 𝐵𝑎 = (𝐵𝑠)) ∧ 𝑡 ∈ 𝒫 𝐵𝑏 = (𝐵𝑡)) → (((𝐼𝑎) ∩ (𝐼𝑏)) ⊆ (𝐼‘(𝑎𝑏)) ↔ (𝐾‘(𝑠𝑡)) ⊆ ((𝐾𝑠) ∪ (𝐾𝑡))))
13035, 50, 129ralxfrd2 5308 . . 3 ((𝜑𝑠 ∈ 𝒫 𝐵𝑎 = (𝐵𝑠)) → (∀𝑏 ∈ 𝒫 𝐵((𝐼𝑎) ∩ (𝐼𝑏)) ⊆ (𝐼‘(𝑎𝑏)) ↔ ∀𝑡 ∈ 𝒫 𝐵(𝐾‘(𝑠𝑡)) ⊆ ((𝐾𝑠) ∪ (𝐾𝑡))))
13117, 31, 130ralxfrd2 5308 . 2 (𝜑 → (∀𝑎 ∈ 𝒫 𝐵𝑏 ∈ 𝒫 𝐵((𝐼𝑎) ∩ (𝐼𝑏)) ⊆ (𝐼‘(𝑎𝑏)) ↔ ∀𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵(𝐾‘(𝑠𝑡)) ⊆ ((𝐾𝑠) ∪ (𝐾𝑡))))
13211, 131syl5bb 284 1 (𝜑 → (∀𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵((𝐼𝑠) ∩ (𝐼𝑡)) ⊆ (𝐼‘(𝑠𝑡)) ↔ ∀𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵(𝐾‘(𝑠𝑡)) ⊆ ((𝐾𝑠) ∪ (𝐾𝑡))))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 207  wa 396  wo 843  w3a 1081   = wceq 1530  wcel 2107  wral 3142  wrex 3143  Vcvv 3499  cdif 3936  cun 3937  cin 3938  wss 3939  𝒫 cpw 4541   class class class wbr 5062  cmpt 5142  wf 6347  cfv 6351  (class class class)co 7151  m cmap 8399
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1789  ax-4 1803  ax-5 1904  ax-6 1963  ax-7 2008  ax-8 2109  ax-9 2117  ax-10 2138  ax-11 2153  ax-12 2169  ax-13 2385  ax-ext 2797  ax-rep 5186  ax-sep 5199  ax-nul 5206  ax-pow 5262  ax-pr 5325  ax-un 7454  ax-frege1 40004
This theorem depends on definitions:  df-bi 208  df-an 397  df-or 844  df-3an 1083  df-tru 1533  df-ex 1774  df-nf 1778  df-sb 2063  df-mo 2619  df-eu 2651  df-clab 2804  df-cleq 2818  df-clel 2897  df-nfc 2967  df-ne 3021  df-ral 3147  df-rex 3148  df-reu 3149  df-rab 3151  df-v 3501  df-sbc 3776  df-csb 3887  df-dif 3942  df-un 3944  df-in 3946  df-ss 3955  df-nul 4295  df-if 4470  df-pw 4543  df-sn 4564  df-pr 4566  df-op 4570  df-uni 4837  df-iun 4918  df-br 5063  df-opab 5125  df-mpt 5143  df-id 5458  df-xp 5559  df-rel 5560  df-cnv 5561  df-co 5562  df-dm 5563  df-rn 5564  df-res 5565  df-ima 5566  df-iota 6311  df-fun 6353  df-fn 6354  df-f 6355  df-f1 6356  df-fo 6357  df-f1o 6358  df-fv 6359  df-ov 7154  df-oprab 7155  df-mpo 7156  df-1st 7683  df-2nd 7684  df-map 8401
This theorem is referenced by: (None)
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