Theorem ntrss 15203

Description: Subset relationship for interior. (Contributed by NM, 3-Oct-2007.) (Revised by Jim Kingdon, 11-Mar-2023.)

Hypothesis

Ref	Expression
clscld.1	⊢ 𝑋 = ∪ 𝐽

Assertion

Ref	Expression
ntrss	⊢ ((𝐽 ∈ Top ∧ 𝑆 ⊆ 𝑋 ∧ 𝑇 ⊆ 𝑆) → ((int‘𝐽)‘𝑇) ⊆ ((int‘𝐽)‘𝑆))

Proof of Theorem ntrss

Step	Hyp	Ref	Expression
1		simp3 1030	. . 3 ⊢ ((𝐽 ∈ Top ∧ 𝑆 ⊆ 𝑋 ∧ 𝑇 ⊆ 𝑆) → 𝑇 ⊆ 𝑆)
2		sspwb 4354	. . . . 5 ⊢ (𝑇 ⊆ 𝑆 ↔ 𝒫 𝑇 ⊆ 𝒫 𝑆)
3		sslin 3457	. . . . 5 ⊢ (𝒫 𝑇 ⊆ 𝒫 𝑆 → (𝐽 ∩ 𝒫 𝑇) ⊆ (𝐽 ∩ 𝒫 𝑆))
4	2, 3	sylbi 121	. . . 4 ⊢ (𝑇 ⊆ 𝑆 → (𝐽 ∩ 𝒫 𝑇) ⊆ (𝐽 ∩ 𝒫 𝑆))
5	4	unissd 3957	. . 3 ⊢ (𝑇 ⊆ 𝑆 → ∪ (𝐽 ∩ 𝒫 𝑇) ⊆ ∪ (𝐽 ∩ 𝒫 𝑆))
6	1, 5	syl 14	. 2 ⊢ ((𝐽 ∈ Top ∧ 𝑆 ⊆ 𝑋 ∧ 𝑇 ⊆ 𝑆) → ∪ (𝐽 ∩ 𝒫 𝑇) ⊆ ∪ (𝐽 ∩ 𝒫 𝑆))
7		simp1 1028	. . 3 ⊢ ((𝐽 ∈ Top ∧ 𝑆 ⊆ 𝑋 ∧ 𝑇 ⊆ 𝑆) → 𝐽 ∈ Top)
8		simp2 1029	. . . 4 ⊢ ((𝐽 ∈ Top ∧ 𝑆 ⊆ 𝑋 ∧ 𝑇 ⊆ 𝑆) → 𝑆 ⊆ 𝑋)
9	1, 8	sstrd 3258	. . 3 ⊢ ((𝐽 ∈ Top ∧ 𝑆 ⊆ 𝑋 ∧ 𝑇 ⊆ 𝑆) → 𝑇 ⊆ 𝑋)
10		clscld.1	. . . 4 ⊢ 𝑋 = ∪ 𝐽
11	10	ntrval 15194	. . 3 ⊢ ((𝐽 ∈ Top ∧ 𝑇 ⊆ 𝑋) → ((int‘𝐽)‘𝑇) = ∪ (𝐽 ∩ 𝒫 𝑇))
12	7, 9, 11	syl2anc 415	. 2 ⊢ ((𝐽 ∈ Top ∧ 𝑆 ⊆ 𝑋 ∧ 𝑇 ⊆ 𝑆) → ((int‘𝐽)‘𝑇) = ∪ (𝐽 ∩ 𝒫 𝑇))
13	10	ntrval 15194	. . 3 ⊢ ((𝐽 ∈ Top ∧ 𝑆 ⊆ 𝑋) → ((int‘𝐽)‘𝑆) = ∪ (𝐽 ∩ 𝒫 𝑆))
14	7, 8, 13	syl2anc 415	. 2 ⊢ ((𝐽 ∈ Top ∧ 𝑆 ⊆ 𝑋 ∧ 𝑇 ⊆ 𝑆) → ((int‘𝐽)‘𝑆) = ∪ (𝐽 ∩ 𝒫 𝑆))
15	6, 12, 14	3sstr4d 3293	1 ⊢ ((𝐽 ∈ Top ∧ 𝑆 ⊆ 𝑋 ∧ 𝑇 ⊆ 𝑆) → ((int‘𝐽)‘𝑇) ⊆ ((int‘𝐽)‘𝑆))

Syntax hints:   → wi 4   ∧ w3a 1009   = wceq 1402   ∈ wcel 2209   ∩ cin 3219   ⊆ wss 3220  𝒫 cpw 3688  ∪ cuni 3933  ‘cfv 5375  Topctop 15081  intcnt 15177

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-14 2212  ax-ext 2220  ax-coll 4244  ax-sep 4247  ax-pow 4309  ax-pr 4344  ax-un 4576

This theorem depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ral 2533  df-rex 2534  df-reu 2535  df-rab 2537  df-v 2823  df-sbc 3052  df-csb 3148  df-un 3224  df-in 3226  df-ss 3233  df-pw 3690  df-sn 3714  df-pr 3715  df-op 3717  df-uni 3934  df-iun 4012  df-br 4129  df-opab 4191  df-mpt 4192  df-id 4436  df-xp 4778  df-rel 4779  df-cnv 4780  df-co 4781  df-dm 4782  df-rn 4783  df-res 4784  df-ima 4785  df-iota 5335  df-fun 5377  df-fn 5378  df-f 5379  df-f1 5380  df-fo 5381  df-f1o 5382  df-fv 5383  df-top 15082  df-ntr 15180

This theorem is referenced by:  ntrin  15208  ntrcls0  15215