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Theorem ntrclsk13 37886
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 𝑖𝑚 𝒫 𝑖) ↦ (𝑗 ∈ 𝒫 𝑖 ↦ (𝑖 ∖ (𝑘‘(𝑖𝑗))))))
ntrcls.d 𝐷 = (𝑂𝐵)
ntrcls.r (𝜑𝐼𝐷𝐾)
Assertion
Ref Expression
ntrclsk13 (𝜑 → (∀𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵(𝐼‘(𝑠𝑡)) = ((𝐼𝑠) ∩ (𝐼𝑡)) ↔ ∀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 ntrclsk13
Dummy variables 𝑎 𝑏 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 ineq1 3790 . . . . 5 (𝑠 = 𝑎 → (𝑠𝑡) = (𝑎𝑡))
21fveq2d 6157 . . . 4 (𝑠 = 𝑎 → (𝐼‘(𝑠𝑡)) = (𝐼‘(𝑎𝑡)))
3 fveq2 6153 . . . . 5 (𝑠 = 𝑎 → (𝐼𝑠) = (𝐼𝑎))
43ineq1d 3796 . . . 4 (𝑠 = 𝑎 → ((𝐼𝑠) ∩ (𝐼𝑡)) = ((𝐼𝑎) ∩ (𝐼𝑡)))
52, 4eqeq12d 2636 . . 3 (𝑠 = 𝑎 → ((𝐼‘(𝑠𝑡)) = ((𝐼𝑠) ∩ (𝐼𝑡)) ↔ (𝐼‘(𝑎𝑡)) = ((𝐼𝑎) ∩ (𝐼𝑡))))
6 ineq2 3791 . . . . 5 (𝑡 = 𝑏 → (𝑎𝑡) = (𝑎𝑏))
76fveq2d 6157 . . . 4 (𝑡 = 𝑏 → (𝐼‘(𝑎𝑡)) = (𝐼‘(𝑎𝑏)))
8 fveq2 6153 . . . . 5 (𝑡 = 𝑏 → (𝐼𝑡) = (𝐼𝑏))
98ineq2d 3797 . . . 4 (𝑡 = 𝑏 → ((𝐼𝑎) ∩ (𝐼𝑡)) = ((𝐼𝑎) ∩ (𝐼𝑏)))
107, 9eqeq12d 2636 . . 3 (𝑡 = 𝑏 → ((𝐼‘(𝑎𝑡)) = ((𝐼𝑎) ∩ (𝐼𝑡)) ↔ (𝐼‘(𝑎𝑏)) = ((𝐼𝑎) ∩ (𝐼𝑏))))
115, 10cbvral2v 3170 . 2 (∀𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵(𝐼‘(𝑠𝑡)) = ((𝐼𝑠) ∩ (𝐼𝑡)) ↔ ∀𝑎 ∈ 𝒫 𝐵𝑏 ∈ 𝒫 𝐵(𝐼‘(𝑎𝑏)) = ((𝐼𝑎) ∩ (𝐼𝑏)))
12 ntrcls.d . . . . . 6 𝐷 = (𝑂𝐵)
13 ntrcls.r . . . . . 6 (𝜑𝐼𝐷𝐾)
1412, 13ntrclsbex 37849 . . . . 5 (𝜑𝐵 ∈ V)
15 difssd 3721 . . . . 5 (𝜑 → (𝐵𝑠) ⊆ 𝐵)
1614, 15sselpwd 4772 . . . 4 (𝜑 → (𝐵𝑠) ∈ 𝒫 𝐵)
1716adantr 481 . . 3 ((𝜑𝑠 ∈ 𝒫 𝐵) → (𝐵𝑠) ∈ 𝒫 𝐵)
18 elpwi 4145 . . . 4 (𝑎 ∈ 𝒫 𝐵𝑎𝐵)
1914adantr 481 . . . . . 6 ((𝜑𝑎𝐵) → 𝐵 ∈ V)
20 difssd 3721 . . . . . 6 ((𝜑𝑎𝐵) → (𝐵𝑎) ⊆ 𝐵)
2119, 20sselpwd 4772 . . . . 5 ((𝜑𝑎𝐵) → (𝐵𝑎) ∈ 𝒫 𝐵)
22 difeq2 3705 . . . . . . . 8 (𝑠 = (𝐵𝑎) → (𝐵𝑠) = (𝐵 ∖ (𝐵𝑎)))
2322eqeq2d 2631 . . . . . . 7 (𝑠 = (𝐵𝑎) → (𝑎 = (𝐵𝑠) ↔ 𝑎 = (𝐵 ∖ (𝐵𝑎))))
24 eqcom 2628 . . . . . . 7 (𝑎 = (𝐵 ∖ (𝐵𝑎)) ↔ (𝐵 ∖ (𝐵𝑎)) = 𝑎)
2523, 24syl6bb 276 . . . . . 6 (𝑠 = (𝐵𝑎) → (𝑎 = (𝐵𝑠) ↔ (𝐵 ∖ (𝐵𝑎)) = 𝑎))
2625adantl 482 . . . . 5 (((𝜑𝑎𝐵) ∧ 𝑠 = (𝐵𝑎)) → (𝑎 = (𝐵𝑠) ↔ (𝐵 ∖ (𝐵𝑎)) = 𝑎))
27 dfss4 3841 . . . . . . 7 (𝑎𝐵 ↔ (𝐵 ∖ (𝐵𝑎)) = 𝑎)
2827biimpi 206 . . . . . 6 (𝑎𝐵 → (𝐵 ∖ (𝐵𝑎)) = 𝑎)
2928adantl 482 . . . . 5 ((𝜑𝑎𝐵) → (𝐵 ∖ (𝐵𝑎)) = 𝑎)
3021, 26, 29rspcedvd 3305 . . . 4 ((𝜑𝑎𝐵) → ∃𝑠 ∈ 𝒫 𝐵𝑎 = (𝐵𝑠))
3118, 30sylan2 491 . . 3 ((𝜑𝑎 ∈ 𝒫 𝐵) → ∃𝑠 ∈ 𝒫 𝐵𝑎 = (𝐵𝑠))
32 ineq1 3790 . . . . . . . 8 (𝑎 = (𝐵𝑠) → (𝑎𝑏) = ((𝐵𝑠) ∩ 𝑏))
3332fveq2d 6157 . . . . . . 7 (𝑎 = (𝐵𝑠) → (𝐼‘(𝑎𝑏)) = (𝐼‘((𝐵𝑠) ∩ 𝑏)))
34 fveq2 6153 . . . . . . . 8 (𝑎 = (𝐵𝑠) → (𝐼𝑎) = (𝐼‘(𝐵𝑠)))
3534ineq1d 3796 . . . . . . 7 (𝑎 = (𝐵𝑠) → ((𝐼𝑎) ∩ (𝐼𝑏)) = ((𝐼‘(𝐵𝑠)) ∩ (𝐼𝑏)))
3633, 35eqeq12d 2636 . . . . . 6 (𝑎 = (𝐵𝑠) → ((𝐼‘(𝑎𝑏)) = ((𝐼𝑎) ∩ (𝐼𝑏)) ↔ (𝐼‘((𝐵𝑠) ∩ 𝑏)) = ((𝐼‘(𝐵𝑠)) ∩ (𝐼𝑏))))
3736ralbidv 2981 . . . . 5 (𝑎 = (𝐵𝑠) → (∀𝑏 ∈ 𝒫 𝐵(𝐼‘(𝑎𝑏)) = ((𝐼𝑎) ∩ (𝐼𝑏)) ↔ ∀𝑏 ∈ 𝒫 𝐵(𝐼‘((𝐵𝑠) ∩ 𝑏)) = ((𝐼‘(𝐵𝑠)) ∩ (𝐼𝑏))))
38373ad2ant3 1082 . . . 4 ((𝜑𝑠 ∈ 𝒫 𝐵𝑎 = (𝐵𝑠)) → (∀𝑏 ∈ 𝒫 𝐵(𝐼‘(𝑎𝑏)) = ((𝐼𝑎) ∩ (𝐼𝑏)) ↔ ∀𝑏 ∈ 𝒫 𝐵(𝐼‘((𝐵𝑠) ∩ 𝑏)) = ((𝐼‘(𝐵𝑠)) ∩ (𝐼𝑏))))
39 difssd 3721 . . . . . . . 8 (𝜑 → (𝐵𝑡) ⊆ 𝐵)
4014, 39sselpwd 4772 . . . . . . 7 (𝜑 → (𝐵𝑡) ∈ 𝒫 𝐵)
4140ad2antrr 761 . . . . . 6 (((𝜑𝑠 ∈ 𝒫 𝐵) ∧ 𝑡 ∈ 𝒫 𝐵) → (𝐵𝑡) ∈ 𝒫 𝐵)
42 simpll 789 . . . . . . 7 (((𝜑𝑠 ∈ 𝒫 𝐵) ∧ 𝑏 ∈ 𝒫 𝐵) → 𝜑)
43 elpwi 4145 . . . . . . . 8 (𝑏 ∈ 𝒫 𝐵𝑏𝐵)
4443adantl 482 . . . . . . 7 (((𝜑𝑠 ∈ 𝒫 𝐵) ∧ 𝑏 ∈ 𝒫 𝐵) → 𝑏𝐵)
45 difssd 3721 . . . . . . . . . 10 (𝜑 → (𝐵𝑏) ⊆ 𝐵)
4614, 45sselpwd 4772 . . . . . . . . 9 (𝜑 → (𝐵𝑏) ∈ 𝒫 𝐵)
4746adantr 481 . . . . . . . 8 ((𝜑𝑏𝐵) → (𝐵𝑏) ∈ 𝒫 𝐵)
48 difeq2 3705 . . . . . . . . . . 11 (𝑡 = (𝐵𝑏) → (𝐵𝑡) = (𝐵 ∖ (𝐵𝑏)))
4948eqeq2d 2631 . . . . . . . . . 10 (𝑡 = (𝐵𝑏) → (𝑏 = (𝐵𝑡) ↔ 𝑏 = (𝐵 ∖ (𝐵𝑏))))
50 eqcom 2628 . . . . . . . . . 10 (𝑏 = (𝐵 ∖ (𝐵𝑏)) ↔ (𝐵 ∖ (𝐵𝑏)) = 𝑏)
5149, 50syl6bb 276 . . . . . . . . 9 (𝑡 = (𝐵𝑏) → (𝑏 = (𝐵𝑡) ↔ (𝐵 ∖ (𝐵𝑏)) = 𝑏))
5251adantl 482 . . . . . . . 8 (((𝜑𝑏𝐵) ∧ 𝑡 = (𝐵𝑏)) → (𝑏 = (𝐵𝑡) ↔ (𝐵 ∖ (𝐵𝑏)) = 𝑏))
53 dfss4 3841 . . . . . . . . . 10 (𝑏𝐵 ↔ (𝐵 ∖ (𝐵𝑏)) = 𝑏)
5453biimpi 206 . . . . . . . . 9 (𝑏𝐵 → (𝐵 ∖ (𝐵𝑏)) = 𝑏)
5554adantl 482 . . . . . . . 8 ((𝜑𝑏𝐵) → (𝐵 ∖ (𝐵𝑏)) = 𝑏)
5647, 52, 55rspcedvd 3305 . . . . . . 7 ((𝜑𝑏𝐵) → ∃𝑡 ∈ 𝒫 𝐵𝑏 = (𝐵𝑡))
5742, 44, 56syl2anc 692 . . . . . 6 (((𝜑𝑠 ∈ 𝒫 𝐵) ∧ 𝑏 ∈ 𝒫 𝐵) → ∃𝑡 ∈ 𝒫 𝐵𝑏 = (𝐵𝑡))
58 ineq2 3791 . . . . . . . . . . 11 (𝑏 = (𝐵𝑡) → ((𝐵𝑠) ∩ 𝑏) = ((𝐵𝑠) ∩ (𝐵𝑡)))
59 difundi 3860 . . . . . . . . . . 11 (𝐵 ∖ (𝑠𝑡)) = ((𝐵𝑠) ∩ (𝐵𝑡))
6058, 59syl6eqr 2673 . . . . . . . . . 10 (𝑏 = (𝐵𝑡) → ((𝐵𝑠) ∩ 𝑏) = (𝐵 ∖ (𝑠𝑡)))
6160fveq2d 6157 . . . . . . . . 9 (𝑏 = (𝐵𝑡) → (𝐼‘((𝐵𝑠) ∩ 𝑏)) = (𝐼‘(𝐵 ∖ (𝑠𝑡))))
62 fveq2 6153 . . . . . . . . . 10 (𝑏 = (𝐵𝑡) → (𝐼𝑏) = (𝐼‘(𝐵𝑡)))
6362ineq2d 3797 . . . . . . . . 9 (𝑏 = (𝐵𝑡) → ((𝐼‘(𝐵𝑠)) ∩ (𝐼𝑏)) = ((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡))))
6461, 63eqeq12d 2636 . . . . . . . 8 (𝑏 = (𝐵𝑡) → ((𝐼‘((𝐵𝑠) ∩ 𝑏)) = ((𝐼‘(𝐵𝑠)) ∩ (𝐼𝑏)) ↔ (𝐼‘(𝐵 ∖ (𝑠𝑡))) = ((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡)))))
65643ad2ant3 1082 . . . . . . 7 (((𝜑𝑠 ∈ 𝒫 𝐵) ∧ 𝑡 ∈ 𝒫 𝐵𝑏 = (𝐵𝑡)) → ((𝐼‘((𝐵𝑠) ∩ 𝑏)) = ((𝐼‘(𝐵𝑠)) ∩ (𝐼𝑏)) ↔ (𝐼‘(𝐵 ∖ (𝑠𝑡))) = ((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡)))))
66 simp1l 1083 . . . . . . . . 9 (((𝜑𝑠 ∈ 𝒫 𝐵) ∧ 𝑡 ∈ 𝒫 𝐵𝑏 = (𝐵𝑡)) → 𝜑)
6766, 14jccir 561 . . . . . . . 8 (((𝜑𝑠 ∈ 𝒫 𝐵) ∧ 𝑡 ∈ 𝒫 𝐵𝑏 = (𝐵𝑡)) → (𝜑𝐵 ∈ V))
68 simp1r 1084 . . . . . . . 8 (((𝜑𝑠 ∈ 𝒫 𝐵) ∧ 𝑡 ∈ 𝒫 𝐵𝑏 = (𝐵𝑡)) → 𝑠 ∈ 𝒫 𝐵)
69 simp2 1060 . . . . . . . 8 (((𝜑𝑠 ∈ 𝒫 𝐵) ∧ 𝑡 ∈ 𝒫 𝐵𝑏 = (𝐵𝑡)) → 𝑡 ∈ 𝒫 𝐵)
70 ntrcls.o . . . . . . . . . . . . . 14 𝑂 = (𝑖 ∈ V ↦ (𝑘 ∈ (𝒫 𝑖𝑚 𝒫 𝑖) ↦ (𝑗 ∈ 𝒫 𝑖 ↦ (𝑖 ∖ (𝑘‘(𝑖𝑗))))))
7170, 12, 13ntrclsiex 37868 . . . . . . . . . . . . 13 (𝜑𝐼 ∈ (𝒫 𝐵𝑚 𝒫 𝐵))
72 elmapi 7831 . . . . . . . . . . . . 13 (𝐼 ∈ (𝒫 𝐵𝑚 𝒫 𝐵) → 𝐼:𝒫 𝐵⟶𝒫 𝐵)
7371, 72syl 17 . . . . . . . . . . . 12 (𝜑𝐼:𝒫 𝐵⟶𝒫 𝐵)
7473anim1i 591 . . . . . . . . . . 11 ((𝜑𝐵 ∈ V) → (𝐼:𝒫 𝐵⟶𝒫 𝐵𝐵 ∈ V))
7574adantr 481 . . . . . . . . . 10 (((𝜑𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → (𝐼:𝒫 𝐵⟶𝒫 𝐵𝐵 ∈ V))
76 simpl 473 . . . . . . . . . . . . 13 ((𝐼:𝒫 𝐵⟶𝒫 𝐵𝐵 ∈ V) → 𝐼:𝒫 𝐵⟶𝒫 𝐵)
77 simpr 477 . . . . . . . . . . . . . 14 ((𝐼:𝒫 𝐵⟶𝒫 𝐵𝐵 ∈ V) → 𝐵 ∈ V)
78 difssd 3721 . . . . . . . . . . . . . 14 ((𝐼:𝒫 𝐵⟶𝒫 𝐵𝐵 ∈ V) → (𝐵 ∖ (𝑠𝑡)) ⊆ 𝐵)
7977, 78sselpwd 4772 . . . . . . . . . . . . 13 ((𝐼:𝒫 𝐵⟶𝒫 𝐵𝐵 ∈ V) → (𝐵 ∖ (𝑠𝑡)) ∈ 𝒫 𝐵)
8076, 79ffvelrnd 6321 . . . . . . . . . . . 12 ((𝐼:𝒫 𝐵⟶𝒫 𝐵𝐵 ∈ V) → (𝐼‘(𝐵 ∖ (𝑠𝑡))) ∈ 𝒫 𝐵)
8180elpwid 4146 . . . . . . . . . . 11 ((𝐼:𝒫 𝐵⟶𝒫 𝐵𝐵 ∈ V) → (𝐼‘(𝐵 ∖ (𝑠𝑡))) ⊆ 𝐵)
82 difssd 3721 . . . . . . . . . . . . . . 15 ((𝐼:𝒫 𝐵⟶𝒫 𝐵𝐵 ∈ V) → (𝐵𝑠) ⊆ 𝐵)
8377, 82sselpwd 4772 . . . . . . . . . . . . . 14 ((𝐼:𝒫 𝐵⟶𝒫 𝐵𝐵 ∈ V) → (𝐵𝑠) ∈ 𝒫 𝐵)
8476, 83ffvelrnd 6321 . . . . . . . . . . . . 13 ((𝐼:𝒫 𝐵⟶𝒫 𝐵𝐵 ∈ V) → (𝐼‘(𝐵𝑠)) ∈ 𝒫 𝐵)
8584elpwid 4146 . . . . . . . . . . . 12 ((𝐼:𝒫 𝐵⟶𝒫 𝐵𝐵 ∈ V) → (𝐼‘(𝐵𝑠)) ⊆ 𝐵)
86 ssinss1 3824 . . . . . . . . . . . 12 ((𝐼‘(𝐵𝑠)) ⊆ 𝐵 → ((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡))) ⊆ 𝐵)
8785, 86syl 17 . . . . . . . . . . 11 ((𝐼:𝒫 𝐵⟶𝒫 𝐵𝐵 ∈ V) → ((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡))) ⊆ 𝐵)
8881, 87jca 554 . . . . . . . . . 10 ((𝐼:𝒫 𝐵⟶𝒫 𝐵𝐵 ∈ V) → ((𝐼‘(𝐵 ∖ (𝑠𝑡))) ⊆ 𝐵 ∧ ((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡))) ⊆ 𝐵))
89 rcompleq 37835 . . . . . . . . . 10 (((𝐼‘(𝐵 ∖ (𝑠𝑡))) ⊆ 𝐵 ∧ ((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡))) ⊆ 𝐵) → ((𝐼‘(𝐵 ∖ (𝑠𝑡))) = ((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡))) ↔ (𝐵 ∖ (𝐼‘(𝐵 ∖ (𝑠𝑡)))) = (𝐵 ∖ ((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡))))))
9075, 88, 893syl 18 . . . . . . . . 9 (((𝜑𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → ((𝐼‘(𝐵 ∖ (𝑠𝑡))) = ((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡))) ↔ (𝐵 ∖ (𝐼‘(𝐵 ∖ (𝑠𝑡)))) = (𝐵 ∖ ((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡))))))
91 simplr 791 . . . . . . . . . . 11 (((𝜑𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → 𝐵 ∈ V)
9271ad2antrr 761 . . . . . . . . . . 11 (((𝜑𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → 𝐼 ∈ (𝒫 𝐵𝑚 𝒫 𝐵))
93 eqid 2621 . . . . . . . . . . 11 (𝐷𝐼) = (𝐷𝐼)
94 simprl 793 . . . . . . . . . . . . . 14 (((𝜑𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → 𝑠 ∈ 𝒫 𝐵)
9594elpwid 4146 . . . . . . . . . . . . 13 (((𝜑𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → 𝑠𝐵)
96 simprr 795 . . . . . . . . . . . . . 14 (((𝜑𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → 𝑡 ∈ 𝒫 𝐵)
9796elpwid 4146 . . . . . . . . . . . . 13 (((𝜑𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → 𝑡𝐵)
9895, 97unssd 3772 . . . . . . . . . . . 12 (((𝜑𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → (𝑠𝑡) ⊆ 𝐵)
9991, 98sselpwd 4772 . . . . . . . . . . 11 (((𝜑𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → (𝑠𝑡) ∈ 𝒫 𝐵)
100 eqid 2621 . . . . . . . . . . 11 ((𝐷𝐼)‘(𝑠𝑡)) = ((𝐷𝐼)‘(𝑠𝑡))
10170, 12, 91, 92, 93, 99, 100dssmapfv3d 37830 . . . . . . . . . 10 (((𝜑𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → ((𝐷𝐼)‘(𝑠𝑡)) = (𝐵 ∖ (𝐼‘(𝐵 ∖ (𝑠𝑡)))))
102 simpl 473 . . . . . . . . . . . . 13 ((𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵) → 𝑠 ∈ 𝒫 𝐵)
103 simplr 791 . . . . . . . . . . . . . 14 (((𝜑𝐵 ∈ V) ∧ 𝑠 ∈ 𝒫 𝐵) → 𝐵 ∈ V)
10471ad2antrr 761 . . . . . . . . . . . . . 14 (((𝜑𝐵 ∈ V) ∧ 𝑠 ∈ 𝒫 𝐵) → 𝐼 ∈ (𝒫 𝐵𝑚 𝒫 𝐵))
105 simpr 477 . . . . . . . . . . . . . 14 (((𝜑𝐵 ∈ V) ∧ 𝑠 ∈ 𝒫 𝐵) → 𝑠 ∈ 𝒫 𝐵)
106 eqid 2621 . . . . . . . . . . . . . 14 ((𝐷𝐼)‘𝑠) = ((𝐷𝐼)‘𝑠)
10770, 12, 103, 104, 93, 105, 106dssmapfv3d 37830 . . . . . . . . . . . . 13 (((𝜑𝐵 ∈ V) ∧ 𝑠 ∈ 𝒫 𝐵) → ((𝐷𝐼)‘𝑠) = (𝐵 ∖ (𝐼‘(𝐵𝑠))))
108102, 107sylan2 491 . . . . . . . . . . . 12 (((𝜑𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → ((𝐷𝐼)‘𝑠) = (𝐵 ∖ (𝐼‘(𝐵𝑠))))
109 simpr 477 . . . . . . . . . . . . 13 ((𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵) → 𝑡 ∈ 𝒫 𝐵)
110 simplr 791 . . . . . . . . . . . . . 14 (((𝜑𝐵 ∈ V) ∧ 𝑡 ∈ 𝒫 𝐵) → 𝐵 ∈ V)
11171ad2antrr 761 . . . . . . . . . . . . . 14 (((𝜑𝐵 ∈ V) ∧ 𝑡 ∈ 𝒫 𝐵) → 𝐼 ∈ (𝒫 𝐵𝑚 𝒫 𝐵))
112 simpr 477 . . . . . . . . . . . . . 14 (((𝜑𝐵 ∈ V) ∧ 𝑡 ∈ 𝒫 𝐵) → 𝑡 ∈ 𝒫 𝐵)
113 eqid 2621 . . . . . . . . . . . . . 14 ((𝐷𝐼)‘𝑡) = ((𝐷𝐼)‘𝑡)
11470, 12, 110, 111, 93, 112, 113dssmapfv3d 37830 . . . . . . . . . . . . 13 (((𝜑𝐵 ∈ V) ∧ 𝑡 ∈ 𝒫 𝐵) → ((𝐷𝐼)‘𝑡) = (𝐵 ∖ (𝐼‘(𝐵𝑡))))
115109, 114sylan2 491 . . . . . . . . . . . 12 (((𝜑𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → ((𝐷𝐼)‘𝑡) = (𝐵 ∖ (𝐼‘(𝐵𝑡))))
116108, 115uneq12d 3751 . . . . . . . . . . 11 (((𝜑𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → (((𝐷𝐼)‘𝑠) ∪ ((𝐷𝐼)‘𝑡)) = ((𝐵 ∖ (𝐼‘(𝐵𝑠))) ∪ (𝐵 ∖ (𝐼‘(𝐵𝑡)))))
117 difindi 3862 . . . . . . . . . . 11 (𝐵 ∖ ((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡)))) = ((𝐵 ∖ (𝐼‘(𝐵𝑠))) ∪ (𝐵 ∖ (𝐼‘(𝐵𝑡))))
118116, 117syl6eqr 2673 . . . . . . . . . 10 (((𝜑𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → (((𝐷𝐼)‘𝑠) ∪ ((𝐷𝐼)‘𝑡)) = (𝐵 ∖ ((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡)))))
119101, 118eqeq12d 2636 . . . . . . . . 9 (((𝜑𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → (((𝐷𝐼)‘(𝑠𝑡)) = (((𝐷𝐼)‘𝑠) ∪ ((𝐷𝐼)‘𝑡)) ↔ (𝐵 ∖ (𝐼‘(𝐵 ∖ (𝑠𝑡)))) = (𝐵 ∖ ((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡))))))
120 simpll 789 . . . . . . . . . 10 (((𝜑𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → 𝜑)
12170, 12, 13ntrclsfv1 37870 . . . . . . . . . 10 (𝜑 → (𝐷𝐼) = 𝐾)
122 fveq1 6152 . . . . . . . . . . 11 ((𝐷𝐼) = 𝐾 → ((𝐷𝐼)‘(𝑠𝑡)) = (𝐾‘(𝑠𝑡)))
123 fveq1 6152 . . . . . . . . . . . 12 ((𝐷𝐼) = 𝐾 → ((𝐷𝐼)‘𝑠) = (𝐾𝑠))
124 fveq1 6152 . . . . . . . . . . . 12 ((𝐷𝐼) = 𝐾 → ((𝐷𝐼)‘𝑡) = (𝐾𝑡))
125123, 124uneq12d 3751 . . . . . . . . . . 11 ((𝐷𝐼) = 𝐾 → (((𝐷𝐼)‘𝑠) ∪ ((𝐷𝐼)‘𝑡)) = ((𝐾𝑠) ∪ (𝐾𝑡)))
126122, 125eqeq12d 2636 . . . . . . . . . 10 ((𝐷𝐼) = 𝐾 → (((𝐷𝐼)‘(𝑠𝑡)) = (((𝐷𝐼)‘𝑠) ∪ ((𝐷𝐼)‘𝑡)) ↔ (𝐾‘(𝑠𝑡)) = ((𝐾𝑠) ∪ (𝐾𝑡))))
127120, 121, 1263syl 18 . . . . . . . . 9 (((𝜑𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → (((𝐷𝐼)‘(𝑠𝑡)) = (((𝐷𝐼)‘𝑠) ∪ ((𝐷𝐼)‘𝑡)) ↔ (𝐾‘(𝑠𝑡)) = ((𝐾𝑠) ∪ (𝐾𝑡))))
12890, 119, 1273bitr2d 296 . . . . . . . 8 (((𝜑𝐵 ∈ V) ∧ (𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵)) → ((𝐼‘(𝐵 ∖ (𝑠𝑡))) = ((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡))) ↔ (𝐾‘(𝑠𝑡)) = ((𝐾𝑠) ∪ (𝐾𝑡))))
12967, 68, 69, 128syl12anc 1321 . . . . . . 7 (((𝜑𝑠 ∈ 𝒫 𝐵) ∧ 𝑡 ∈ 𝒫 𝐵𝑏 = (𝐵𝑡)) → ((𝐼‘(𝐵 ∖ (𝑠𝑡))) = ((𝐼‘(𝐵𝑠)) ∩ (𝐼‘(𝐵𝑡))) ↔ (𝐾‘(𝑠𝑡)) = ((𝐾𝑠) ∪ (𝐾𝑡))))
13065, 129bitrd 268 . . . . . 6 (((𝜑𝑠 ∈ 𝒫 𝐵) ∧ 𝑡 ∈ 𝒫 𝐵𝑏 = (𝐵𝑡)) → ((𝐼‘((𝐵𝑠) ∩ 𝑏)) = ((𝐼‘(𝐵𝑠)) ∩ (𝐼𝑏)) ↔ (𝐾‘(𝑠𝑡)) = ((𝐾𝑠) ∪ (𝐾𝑡))))
13141, 57, 130ralxfrd2 4849 . . . . 5 ((𝜑𝑠 ∈ 𝒫 𝐵) → (∀𝑏 ∈ 𝒫 𝐵(𝐼‘((𝐵𝑠) ∩ 𝑏)) = ((𝐼‘(𝐵𝑠)) ∩ (𝐼𝑏)) ↔ ∀𝑡 ∈ 𝒫 𝐵(𝐾‘(𝑠𝑡)) = ((𝐾𝑠) ∪ (𝐾𝑡))))
1321313adant3 1079 . . . 4 ((𝜑𝑠 ∈ 𝒫 𝐵𝑎 = (𝐵𝑠)) → (∀𝑏 ∈ 𝒫 𝐵(𝐼‘((𝐵𝑠) ∩ 𝑏)) = ((𝐼‘(𝐵𝑠)) ∩ (𝐼𝑏)) ↔ ∀𝑡 ∈ 𝒫 𝐵(𝐾‘(𝑠𝑡)) = ((𝐾𝑠) ∪ (𝐾𝑡))))
13338, 132bitrd 268 . . 3 ((𝜑𝑠 ∈ 𝒫 𝐵𝑎 = (𝐵𝑠)) → (∀𝑏 ∈ 𝒫 𝐵(𝐼‘(𝑎𝑏)) = ((𝐼𝑎) ∩ (𝐼𝑏)) ↔ ∀𝑡 ∈ 𝒫 𝐵(𝐾‘(𝑠𝑡)) = ((𝐾𝑠) ∪ (𝐾𝑡))))
13417, 31, 133ralxfrd2 4849 . 2 (𝜑 → (∀𝑎 ∈ 𝒫 𝐵𝑏 ∈ 𝒫 𝐵(𝐼‘(𝑎𝑏)) = ((𝐼𝑎) ∩ (𝐼𝑏)) ↔ ∀𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵(𝐾‘(𝑠𝑡)) = ((𝐾𝑠) ∪ (𝐾𝑡))))
13511, 134syl5bb 272 1 (𝜑 → (∀𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵(𝐼‘(𝑠𝑡)) = ((𝐼𝑠) ∩ (𝐼𝑡)) ↔ ∀𝑠 ∈ 𝒫 𝐵𝑡 ∈ 𝒫 𝐵(𝐾‘(𝑠𝑡)) = ((𝐾𝑠) ∪ (𝐾𝑡))))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 196  wa 384  w3a 1036   = wceq 1480  wcel 1987  wral 2907  wrex 2908  Vcvv 3189  cdif 3556  cun 3557  cin 3558  wss 3559  𝒫 cpw 4135   class class class wbr 4618  cmpt 4678  wf 5848  cfv 5852  (class class class)co 6610  𝑚 cmap 7809
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1719  ax-4 1734  ax-5 1836  ax-6 1885  ax-7 1932  ax-8 1989  ax-9 1996  ax-10 2016  ax-11 2031  ax-12 2044  ax-13 2245  ax-ext 2601  ax-rep 4736  ax-sep 4746  ax-nul 4754  ax-pow 4808  ax-pr 4872  ax-un 6909
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1038  df-tru 1483  df-ex 1702  df-nf 1707  df-sb 1878  df-eu 2473  df-mo 2474  df-clab 2608  df-cleq 2614  df-clel 2617  df-nfc 2750  df-ne 2791  df-ral 2912  df-rex 2913  df-reu 2914  df-rab 2916  df-v 3191  df-sbc 3422  df-csb 3519  df-dif 3562  df-un 3564  df-in 3566  df-ss 3573  df-nul 3897  df-if 4064  df-pw 4137  df-sn 4154  df-pr 4156  df-op 4160  df-uni 4408  df-iun 4492  df-br 4619  df-opab 4679  df-mpt 4680  df-id 4994  df-xp 5085  df-rel 5086  df-cnv 5087  df-co 5088  df-dm 5089  df-rn 5090  df-res 5091  df-ima 5092  df-iota 5815  df-fun 5854  df-fn 5855  df-f 5856  df-f1 5857  df-fo 5858  df-f1o 5859  df-fv 5860  df-ov 6613  df-oprab 6614  df-mpt2 6615  df-1st 7120  df-2nd 7121  df-map 7811
This theorem is referenced by: (None)
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