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Theorem restntr 22314
Description: An interior in a subspace topology. Willard in General Topology says that there is no analogue of restcls 22313 for interiors. In some sense, that is true. (Contributed by Jeff Hankins, 23-Jan-2010.) (Revised by Mario Carneiro, 15-Dec-2013.)
Hypotheses
Ref Expression
restcls.1 𝑋 = 𝐽
restcls.2 𝐾 = (𝐽t 𝑌)
Assertion
Ref Expression
restntr ((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) → ((int‘𝐾)‘𝑆) = (((int‘𝐽)‘(𝑆 ∪ (𝑋𝑌))) ∩ 𝑌))

Proof of Theorem restntr
Dummy variables 𝑥 𝑜 are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 restcls.2 . . . . . . 7 𝐾 = (𝐽t 𝑌)
21fveq2i 6771 . . . . . 6 (int‘𝐾) = (int‘(𝐽t 𝑌))
32fveq1i 6769 . . . . 5 ((int‘𝐾)‘𝑆) = ((int‘(𝐽t 𝑌))‘𝑆)
4 restcls.1 . . . . . . . . . 10 𝑋 = 𝐽
54topopn 22036 . . . . . . . . 9 (𝐽 ∈ Top → 𝑋𝐽)
6 ssexg 5250 . . . . . . . . . 10 ((𝑌𝑋𝑋𝐽) → 𝑌 ∈ V)
76ancoms 458 . . . . . . . . 9 ((𝑋𝐽𝑌𝑋) → 𝑌 ∈ V)
85, 7sylan 579 . . . . . . . 8 ((𝐽 ∈ Top ∧ 𝑌𝑋) → 𝑌 ∈ V)
9 resttop 22292 . . . . . . . 8 ((𝐽 ∈ Top ∧ 𝑌 ∈ V) → (𝐽t 𝑌) ∈ Top)
108, 9syldan 590 . . . . . . 7 ((𝐽 ∈ Top ∧ 𝑌𝑋) → (𝐽t 𝑌) ∈ Top)
11103adant3 1130 . . . . . 6 ((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) → (𝐽t 𝑌) ∈ Top)
124restuni 22294 . . . . . . . 8 ((𝐽 ∈ Top ∧ 𝑌𝑋) → 𝑌 = (𝐽t 𝑌))
1312sseq2d 3957 . . . . . . 7 ((𝐽 ∈ Top ∧ 𝑌𝑋) → (𝑆𝑌𝑆 (𝐽t 𝑌)))
1413biimp3a 1467 . . . . . 6 ((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) → 𝑆 (𝐽t 𝑌))
15 eqid 2739 . . . . . . 7 (𝐽t 𝑌) = (𝐽t 𝑌)
1615ntropn 22181 . . . . . 6 (((𝐽t 𝑌) ∈ Top ∧ 𝑆 (𝐽t 𝑌)) → ((int‘(𝐽t 𝑌))‘𝑆) ∈ (𝐽t 𝑌))
1711, 14, 16syl2anc 583 . . . . 5 ((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) → ((int‘(𝐽t 𝑌))‘𝑆) ∈ (𝐽t 𝑌))
183, 17eqeltrid 2844 . . . 4 ((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) → ((int‘𝐾)‘𝑆) ∈ (𝐽t 𝑌))
19 simp1 1134 . . . . 5 ((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) → 𝐽 ∈ Top)
20 uniexg 7584 . . . . . . . . 9 (𝐽 ∈ Top → 𝐽 ∈ V)
214, 20eqeltrid 2844 . . . . . . . 8 (𝐽 ∈ Top → 𝑋 ∈ V)
22 ssexg 5250 . . . . . . . 8 ((𝑌𝑋𝑋 ∈ V) → 𝑌 ∈ V)
2321, 22sylan2 592 . . . . . . 7 ((𝑌𝑋𝐽 ∈ Top) → 𝑌 ∈ V)
2423ancoms 458 . . . . . 6 ((𝐽 ∈ Top ∧ 𝑌𝑋) → 𝑌 ∈ V)
25243adant3 1130 . . . . 5 ((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) → 𝑌 ∈ V)
26 elrest 17119 . . . . 5 ((𝐽 ∈ Top ∧ 𝑌 ∈ V) → (((int‘𝐾)‘𝑆) ∈ (𝐽t 𝑌) ↔ ∃𝑜𝐽 ((int‘𝐾)‘𝑆) = (𝑜𝑌)))
2719, 25, 26syl2anc 583 . . . 4 ((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) → (((int‘𝐾)‘𝑆) ∈ (𝐽t 𝑌) ↔ ∃𝑜𝐽 ((int‘𝐾)‘𝑆) = (𝑜𝑌)))
2818, 27mpbid 231 . . 3 ((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) → ∃𝑜𝐽 ((int‘𝐾)‘𝑆) = (𝑜𝑌))
294eltopss 22037 . . . . . . . . . . 11 ((𝐽 ∈ Top ∧ 𝑜𝐽) → 𝑜𝑋)
3029sseld 3924 . . . . . . . . . 10 ((𝐽 ∈ Top ∧ 𝑜𝐽) → (𝑥𝑜𝑥𝑋))
3130adantrr 713 . . . . . . . . 9 ((𝐽 ∈ Top ∧ (𝑜𝐽 ∧ ((int‘𝐾)‘𝑆) = (𝑜𝑌))) → (𝑥𝑜𝑥𝑋))
32313ad2antl1 1183 . . . . . . . 8 (((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) ∧ (𝑜𝐽 ∧ ((int‘𝐾)‘𝑆) = (𝑜𝑌))) → (𝑥𝑜𝑥𝑋))
33 eldif 3901 . . . . . . . . . 10 (𝑥 ∈ (𝑋𝑌) ↔ (𝑥𝑋 ∧ ¬ 𝑥𝑌))
3433simplbi2 500 . . . . . . . . 9 (𝑥𝑋 → (¬ 𝑥𝑌𝑥 ∈ (𝑋𝑌)))
3534orrd 859 . . . . . . . 8 (𝑥𝑋 → (𝑥𝑌𝑥 ∈ (𝑋𝑌)))
3632, 35syl6 35 . . . . . . 7 (((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) ∧ (𝑜𝐽 ∧ ((int‘𝐾)‘𝑆) = (𝑜𝑌))) → (𝑥𝑜 → (𝑥𝑌𝑥 ∈ (𝑋𝑌))))
37 elin 3907 . . . . . . . . . . 11 (𝑥 ∈ (𝑜𝑌) ↔ (𝑥𝑜𝑥𝑌))
38 eleq2 2828 . . . . . . . . . . . . 13 (((int‘𝐾)‘𝑆) = (𝑜𝑌) → (𝑥 ∈ ((int‘𝐾)‘𝑆) ↔ 𝑥 ∈ (𝑜𝑌)))
39 elun1 4114 . . . . . . . . . . . . 13 (𝑥 ∈ ((int‘𝐾)‘𝑆) → 𝑥 ∈ (((int‘𝐾)‘𝑆) ∪ (𝑋𝑌)))
4038, 39syl6bir 253 . . . . . . . . . . . 12 (((int‘𝐾)‘𝑆) = (𝑜𝑌) → (𝑥 ∈ (𝑜𝑌) → 𝑥 ∈ (((int‘𝐾)‘𝑆) ∪ (𝑋𝑌))))
4140ad2antll 725 . . . . . . . . . . 11 (((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) ∧ (𝑜𝐽 ∧ ((int‘𝐾)‘𝑆) = (𝑜𝑌))) → (𝑥 ∈ (𝑜𝑌) → 𝑥 ∈ (((int‘𝐾)‘𝑆) ∪ (𝑋𝑌))))
4237, 41syl5bir 242 . . . . . . . . . 10 (((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) ∧ (𝑜𝐽 ∧ ((int‘𝐾)‘𝑆) = (𝑜𝑌))) → ((𝑥𝑜𝑥𝑌) → 𝑥 ∈ (((int‘𝐾)‘𝑆) ∪ (𝑋𝑌))))
4342expdimp 452 . . . . . . . . 9 ((((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) ∧ (𝑜𝐽 ∧ ((int‘𝐾)‘𝑆) = (𝑜𝑌))) ∧ 𝑥𝑜) → (𝑥𝑌𝑥 ∈ (((int‘𝐾)‘𝑆) ∪ (𝑋𝑌))))
44 elun2 4115 . . . . . . . . . 10 (𝑥 ∈ (𝑋𝑌) → 𝑥 ∈ (((int‘𝐾)‘𝑆) ∪ (𝑋𝑌)))
4544a1i 11 . . . . . . . . 9 ((((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) ∧ (𝑜𝐽 ∧ ((int‘𝐾)‘𝑆) = (𝑜𝑌))) ∧ 𝑥𝑜) → (𝑥 ∈ (𝑋𝑌) → 𝑥 ∈ (((int‘𝐾)‘𝑆) ∪ (𝑋𝑌))))
4643, 45jaod 855 . . . . . . . 8 ((((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) ∧ (𝑜𝐽 ∧ ((int‘𝐾)‘𝑆) = (𝑜𝑌))) ∧ 𝑥𝑜) → ((𝑥𝑌𝑥 ∈ (𝑋𝑌)) → 𝑥 ∈ (((int‘𝐾)‘𝑆) ∪ (𝑋𝑌))))
4746ex 412 . . . . . . 7 (((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) ∧ (𝑜𝐽 ∧ ((int‘𝐾)‘𝑆) = (𝑜𝑌))) → (𝑥𝑜 → ((𝑥𝑌𝑥 ∈ (𝑋𝑌)) → 𝑥 ∈ (((int‘𝐾)‘𝑆) ∪ (𝑋𝑌)))))
4836, 47mpdd 43 . . . . . 6 (((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) ∧ (𝑜𝐽 ∧ ((int‘𝐾)‘𝑆) = (𝑜𝑌))) → (𝑥𝑜𝑥 ∈ (((int‘𝐾)‘𝑆) ∪ (𝑋𝑌))))
4948ssrdv 3931 . . . . 5 (((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) ∧ (𝑜𝐽 ∧ ((int‘𝐾)‘𝑆) = (𝑜𝑌))) → 𝑜 ⊆ (((int‘𝐾)‘𝑆) ∪ (𝑋𝑌)))
5011adantr 480 . . . . . . . 8 (((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) ∧ (𝑜𝐽 ∧ ((int‘𝐾)‘𝑆) = (𝑜𝑌))) → (𝐽t 𝑌) ∈ Top)
511, 50eqeltrid 2844 . . . . . . 7 (((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) ∧ (𝑜𝐽 ∧ ((int‘𝐾)‘𝑆) = (𝑜𝑌))) → 𝐾 ∈ Top)
5214adantr 480 . . . . . . 7 (((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) ∧ (𝑜𝐽 ∧ ((int‘𝐾)‘𝑆) = (𝑜𝑌))) → 𝑆 (𝐽t 𝑌))
531unieqi 4857 . . . . . . . . 9 𝐾 = (𝐽t 𝑌)
5453eqcomi 2748 . . . . . . . 8 (𝐽t 𝑌) = 𝐾
5554ntrss2 22189 . . . . . . 7 ((𝐾 ∈ Top ∧ 𝑆 (𝐽t 𝑌)) → ((int‘𝐾)‘𝑆) ⊆ 𝑆)
5651, 52, 55syl2anc 583 . . . . . 6 (((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) ∧ (𝑜𝐽 ∧ ((int‘𝐾)‘𝑆) = (𝑜𝑌))) → ((int‘𝐾)‘𝑆) ⊆ 𝑆)
57 unss1 4117 . . . . . 6 (((int‘𝐾)‘𝑆) ⊆ 𝑆 → (((int‘𝐾)‘𝑆) ∪ (𝑋𝑌)) ⊆ (𝑆 ∪ (𝑋𝑌)))
5856, 57syl 17 . . . . 5 (((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) ∧ (𝑜𝐽 ∧ ((int‘𝐾)‘𝑆) = (𝑜𝑌))) → (((int‘𝐾)‘𝑆) ∪ (𝑋𝑌)) ⊆ (𝑆 ∪ (𝑋𝑌)))
5949, 58sstrd 3935 . . . 4 (((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) ∧ (𝑜𝐽 ∧ ((int‘𝐾)‘𝑆) = (𝑜𝑌))) → 𝑜 ⊆ (𝑆 ∪ (𝑋𝑌)))
60 simpl1 1189 . . . . . . . . . 10 (((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) ∧ (𝑜𝐽𝑜 ⊆ (𝑆 ∪ (𝑋𝑌)))) → 𝐽 ∈ Top)
61 sstr 3933 . . . . . . . . . . . . . 14 ((𝑆𝑌𝑌𝑋) → 𝑆𝑋)
6261ancoms 458 . . . . . . . . . . . . 13 ((𝑌𝑋𝑆𝑌) → 𝑆𝑋)
63623adant1 1128 . . . . . . . . . . . 12 ((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) → 𝑆𝑋)
6463adantr 480 . . . . . . . . . . 11 (((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) ∧ (𝑜𝐽𝑜 ⊆ (𝑆 ∪ (𝑋𝑌)))) → 𝑆𝑋)
65 difss 4070 . . . . . . . . . . 11 (𝑋𝑌) ⊆ 𝑋
66 unss 4122 . . . . . . . . . . 11 ((𝑆𝑋 ∧ (𝑋𝑌) ⊆ 𝑋) ↔ (𝑆 ∪ (𝑋𝑌)) ⊆ 𝑋)
6764, 65, 66sylanblc 588 . . . . . . . . . 10 (((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) ∧ (𝑜𝐽𝑜 ⊆ (𝑆 ∪ (𝑋𝑌)))) → (𝑆 ∪ (𝑋𝑌)) ⊆ 𝑋)
68 simprl 767 . . . . . . . . . 10 (((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) ∧ (𝑜𝐽𝑜 ⊆ (𝑆 ∪ (𝑋𝑌)))) → 𝑜𝐽)
69 simprr 769 . . . . . . . . . 10 (((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) ∧ (𝑜𝐽𝑜 ⊆ (𝑆 ∪ (𝑋𝑌)))) → 𝑜 ⊆ (𝑆 ∪ (𝑋𝑌)))
704ssntr 22190 . . . . . . . . . 10 (((𝐽 ∈ Top ∧ (𝑆 ∪ (𝑋𝑌)) ⊆ 𝑋) ∧ (𝑜𝐽𝑜 ⊆ (𝑆 ∪ (𝑋𝑌)))) → 𝑜 ⊆ ((int‘𝐽)‘(𝑆 ∪ (𝑋𝑌))))
7160, 67, 68, 69, 70syl22anc 835 . . . . . . . . 9 (((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) ∧ (𝑜𝐽𝑜 ⊆ (𝑆 ∪ (𝑋𝑌)))) → 𝑜 ⊆ ((int‘𝐽)‘(𝑆 ∪ (𝑋𝑌))))
7271ssrind 4174 . . . . . . . 8 (((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) ∧ (𝑜𝐽𝑜 ⊆ (𝑆 ∪ (𝑋𝑌)))) → (𝑜𝑌) ⊆ (((int‘𝐽)‘(𝑆 ∪ (𝑋𝑌))) ∩ 𝑌))
73 sseq1 3950 . . . . . . . 8 (((int‘𝐾)‘𝑆) = (𝑜𝑌) → (((int‘𝐾)‘𝑆) ⊆ (((int‘𝐽)‘(𝑆 ∪ (𝑋𝑌))) ∩ 𝑌) ↔ (𝑜𝑌) ⊆ (((int‘𝐽)‘(𝑆 ∪ (𝑋𝑌))) ∩ 𝑌)))
7472, 73syl5ibrcom 246 . . . . . . 7 (((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) ∧ (𝑜𝐽𝑜 ⊆ (𝑆 ∪ (𝑋𝑌)))) → (((int‘𝐾)‘𝑆) = (𝑜𝑌) → ((int‘𝐾)‘𝑆) ⊆ (((int‘𝐽)‘(𝑆 ∪ (𝑋𝑌))) ∩ 𝑌)))
7574expr 456 . . . . . 6 (((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) ∧ 𝑜𝐽) → (𝑜 ⊆ (𝑆 ∪ (𝑋𝑌)) → (((int‘𝐾)‘𝑆) = (𝑜𝑌) → ((int‘𝐾)‘𝑆) ⊆ (((int‘𝐽)‘(𝑆 ∪ (𝑋𝑌))) ∩ 𝑌))))
7675com23 86 . . . . 5 (((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) ∧ 𝑜𝐽) → (((int‘𝐾)‘𝑆) = (𝑜𝑌) → (𝑜 ⊆ (𝑆 ∪ (𝑋𝑌)) → ((int‘𝐾)‘𝑆) ⊆ (((int‘𝐽)‘(𝑆 ∪ (𝑋𝑌))) ∩ 𝑌))))
7776impr 454 . . . 4 (((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) ∧ (𝑜𝐽 ∧ ((int‘𝐾)‘𝑆) = (𝑜𝑌))) → (𝑜 ⊆ (𝑆 ∪ (𝑋𝑌)) → ((int‘𝐾)‘𝑆) ⊆ (((int‘𝐽)‘(𝑆 ∪ (𝑋𝑌))) ∩ 𝑌)))
7859, 77mpd 15 . . 3 (((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) ∧ (𝑜𝐽 ∧ ((int‘𝐾)‘𝑆) = (𝑜𝑌))) → ((int‘𝐾)‘𝑆) ⊆ (((int‘𝐽)‘(𝑆 ∪ (𝑋𝑌))) ∩ 𝑌))
7928, 78rexlimddv 3221 . 2 ((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) → ((int‘𝐾)‘𝑆) ⊆ (((int‘𝐽)‘(𝑆 ∪ (𝑋𝑌))) ∩ 𝑌))
801, 11eqeltrid 2844 . . 3 ((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) → 𝐾 ∈ Top)
8183adant3 1130 . . . . 5 ((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) → 𝑌 ∈ V)
8263, 65, 66sylanblc 588 . . . . . 6 ((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) → (𝑆 ∪ (𝑋𝑌)) ⊆ 𝑋)
834ntropn 22181 . . . . . 6 ((𝐽 ∈ Top ∧ (𝑆 ∪ (𝑋𝑌)) ⊆ 𝑋) → ((int‘𝐽)‘(𝑆 ∪ (𝑋𝑌))) ∈ 𝐽)
8419, 82, 83syl2anc 583 . . . . 5 ((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) → ((int‘𝐽)‘(𝑆 ∪ (𝑋𝑌))) ∈ 𝐽)
85 elrestr 17120 . . . . 5 ((𝐽 ∈ Top ∧ 𝑌 ∈ V ∧ ((int‘𝐽)‘(𝑆 ∪ (𝑋𝑌))) ∈ 𝐽) → (((int‘𝐽)‘(𝑆 ∪ (𝑋𝑌))) ∩ 𝑌) ∈ (𝐽t 𝑌))
8619, 81, 84, 85syl3anc 1369 . . . 4 ((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) → (((int‘𝐽)‘(𝑆 ∪ (𝑋𝑌))) ∩ 𝑌) ∈ (𝐽t 𝑌))
8786, 1eleqtrrdi 2851 . . 3 ((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) → (((int‘𝐽)‘(𝑆 ∪ (𝑋𝑌))) ∩ 𝑌) ∈ 𝐾)
884ntrss2 22189 . . . . . 6 ((𝐽 ∈ Top ∧ (𝑆 ∪ (𝑋𝑌)) ⊆ 𝑋) → ((int‘𝐽)‘(𝑆 ∪ (𝑋𝑌))) ⊆ (𝑆 ∪ (𝑋𝑌)))
8919, 82, 88syl2anc 583 . . . . 5 ((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) → ((int‘𝐽)‘(𝑆 ∪ (𝑋𝑌))) ⊆ (𝑆 ∪ (𝑋𝑌)))
9089ssrind 4174 . . . 4 ((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) → (((int‘𝐽)‘(𝑆 ∪ (𝑋𝑌))) ∩ 𝑌) ⊆ ((𝑆 ∪ (𝑋𝑌)) ∩ 𝑌))
91 elin 3907 . . . . . . 7 (𝑥 ∈ ((𝑆 ∪ (𝑋𝑌)) ∩ 𝑌) ↔ (𝑥 ∈ (𝑆 ∪ (𝑋𝑌)) ∧ 𝑥𝑌))
92 elun 4087 . . . . . . . . 9 (𝑥 ∈ (𝑆 ∪ (𝑋𝑌)) ↔ (𝑥𝑆𝑥 ∈ (𝑋𝑌)))
93 orcom 866 . . . . . . . . . 10 ((𝑥𝑆𝑥 ∈ (𝑋𝑌)) ↔ (𝑥 ∈ (𝑋𝑌) ∨ 𝑥𝑆))
94 df-or 844 . . . . . . . . . 10 ((𝑥 ∈ (𝑋𝑌) ∨ 𝑥𝑆) ↔ (¬ 𝑥 ∈ (𝑋𝑌) → 𝑥𝑆))
9593, 94bitri 274 . . . . . . . . 9 ((𝑥𝑆𝑥 ∈ (𝑋𝑌)) ↔ (¬ 𝑥 ∈ (𝑋𝑌) → 𝑥𝑆))
9692, 95bitri 274 . . . . . . . 8 (𝑥 ∈ (𝑆 ∪ (𝑋𝑌)) ↔ (¬ 𝑥 ∈ (𝑋𝑌) → 𝑥𝑆))
9796anbi1i 623 . . . . . . 7 ((𝑥 ∈ (𝑆 ∪ (𝑋𝑌)) ∧ 𝑥𝑌) ↔ ((¬ 𝑥 ∈ (𝑋𝑌) → 𝑥𝑆) ∧ 𝑥𝑌))
9891, 97bitri 274 . . . . . 6 (𝑥 ∈ ((𝑆 ∪ (𝑋𝑌)) ∩ 𝑌) ↔ ((¬ 𝑥 ∈ (𝑋𝑌) → 𝑥𝑆) ∧ 𝑥𝑌))
99 elndif 4067 . . . . . . . . 9 (𝑥𝑌 → ¬ 𝑥 ∈ (𝑋𝑌))
100 pm2.27 42 . . . . . . . . 9 𝑥 ∈ (𝑋𝑌) → ((¬ 𝑥 ∈ (𝑋𝑌) → 𝑥𝑆) → 𝑥𝑆))
10199, 100syl 17 . . . . . . . 8 (𝑥𝑌 → ((¬ 𝑥 ∈ (𝑋𝑌) → 𝑥𝑆) → 𝑥𝑆))
102101impcom 407 . . . . . . 7 (((¬ 𝑥 ∈ (𝑋𝑌) → 𝑥𝑆) ∧ 𝑥𝑌) → 𝑥𝑆)
103102a1i 11 . . . . . 6 ((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) → (((¬ 𝑥 ∈ (𝑋𝑌) → 𝑥𝑆) ∧ 𝑥𝑌) → 𝑥𝑆))
10498, 103syl5bi 241 . . . . 5 ((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) → (𝑥 ∈ ((𝑆 ∪ (𝑋𝑌)) ∩ 𝑌) → 𝑥𝑆))
105104ssrdv 3931 . . . 4 ((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) → ((𝑆 ∪ (𝑋𝑌)) ∩ 𝑌) ⊆ 𝑆)
10690, 105sstrd 3935 . . 3 ((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) → (((int‘𝐽)‘(𝑆 ∪ (𝑋𝑌))) ∩ 𝑌) ⊆ 𝑆)
10754ssntr 22190 . . 3 (((𝐾 ∈ Top ∧ 𝑆 (𝐽t 𝑌)) ∧ ((((int‘𝐽)‘(𝑆 ∪ (𝑋𝑌))) ∩ 𝑌) ∈ 𝐾 ∧ (((int‘𝐽)‘(𝑆 ∪ (𝑋𝑌))) ∩ 𝑌) ⊆ 𝑆)) → (((int‘𝐽)‘(𝑆 ∪ (𝑋𝑌))) ∩ 𝑌) ⊆ ((int‘𝐾)‘𝑆))
10880, 14, 87, 106, 107syl22anc 835 . 2 ((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) → (((int‘𝐽)‘(𝑆 ∪ (𝑋𝑌))) ∩ 𝑌) ⊆ ((int‘𝐾)‘𝑆))
10979, 108eqssd 3942 1 ((𝐽 ∈ Top ∧ 𝑌𝑋𝑆𝑌) → ((int‘𝐾)‘𝑆) = (((int‘𝐽)‘(𝑆 ∪ (𝑋𝑌))) ∩ 𝑌))
Colors of variables: wff setvar class
Syntax hints:  ¬ wn 3  wi 4  wb 205  wa 395  wo 843  w3a 1085   = wceq 1541  wcel 2109  wrex 3066  Vcvv 3430  cdif 3888  cun 3889  cin 3890  wss 3891   cuni 4844  cfv 6430  (class class class)co 7268  t crest 17112  Topctop 22023  intcnt 22149
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1801  ax-4 1815  ax-5 1916  ax-6 1974  ax-7 2014  ax-8 2111  ax-9 2119  ax-10 2140  ax-11 2157  ax-12 2174  ax-ext 2710  ax-rep 5213  ax-sep 5226  ax-nul 5233  ax-pow 5291  ax-pr 5355  ax-un 7579
This theorem depends on definitions:  df-bi 206  df-an 396  df-or 844  df-3or 1086  df-3an 1087  df-tru 1544  df-fal 1554  df-ex 1786  df-nf 1790  df-sb 2071  df-mo 2541  df-eu 2570  df-clab 2717  df-cleq 2731  df-clel 2817  df-nfc 2890  df-ne 2945  df-ral 3070  df-rex 3071  df-reu 3072  df-rab 3074  df-v 3432  df-sbc 3720  df-csb 3837  df-dif 3894  df-un 3896  df-in 3898  df-ss 3908  df-pss 3910  df-nul 4262  df-if 4465  df-pw 4540  df-sn 4567  df-pr 4569  df-tp 4571  df-op 4573  df-uni 4845  df-int 4885  df-iun 4931  df-br 5079  df-opab 5141  df-mpt 5162  df-tr 5196  df-id 5488  df-eprel 5494  df-po 5502  df-so 5503  df-fr 5543  df-we 5545  df-xp 5594  df-rel 5595  df-cnv 5596  df-co 5597  df-dm 5598  df-rn 5599  df-res 5600  df-ima 5601  df-ord 6266  df-on 6267  df-lim 6268  df-suc 6269  df-iota 6388  df-fun 6432  df-fn 6433  df-f 6434  df-f1 6435  df-fo 6436  df-f1o 6437  df-fv 6438  df-ov 7271  df-oprab 7272  df-mpo 7273  df-om 7701  df-1st 7817  df-2nd 7818  df-en 8708  df-fin 8711  df-fi 9131  df-rest 17114  df-topgen 17135  df-top 22024  df-topon 22041  df-bases 22077  df-ntr 22152
This theorem is referenced by:  llycmpkgen2  22682  dvreslem  25054  dvres2lem  25055  dvaddbr  25083  dvmulbr  25084  dvcnvrelem2  25163  limciccioolb  43116  limcicciooub  43132  ioccncflimc  43380  icocncflimc  43384  cncfiooicclem1  43388  fourierdlem62  43663
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