Theorem shintcli 31348

Description: Closure of intersection of a nonempty subset of S_ℋ. (Contributed by NM, 14-Oct-1999.) (New usage is discouraged.)

Hypothesis

Ref	Expression
shintcl.1	⊢ (𝐴 ⊆ Sℋ ∧ 𝐴 ≠ ∅)

Assertion

Ref	Expression
shintcli	⊢ ∩ 𝐴 ∈ Sℋ

Proof of Theorem shintcli

Dummy variables 𝑥 𝑦 𝑧 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		shintcl.1	. . . . 5 ⊢ (𝐴 ⊆ Sℋ ∧ 𝐴 ≠ ∅)
2	1	simpri 485	. . . 4 ⊢ 𝐴 ≠ ∅
3		n0 4353	. . . . 5 ⊢ (𝐴 ≠ ∅ ↔ ∃𝑧 𝑧 ∈ 𝐴)
4		intss1 4963	. . . . . . 7 ⊢ (𝑧 ∈ 𝐴 → ∩ 𝐴 ⊆ 𝑧)
5	1	simpli 483	. . . . . . . . 9 ⊢ 𝐴 ⊆ Sℋ
6	5	sseli 3979	. . . . . . . 8 ⊢ (𝑧 ∈ 𝐴 → 𝑧 ∈ Sℋ )
7		shss 31229	. . . . . . . 8 ⊢ (𝑧 ∈ Sℋ → 𝑧 ⊆ ℋ)
8	6, 7	syl 17	. . . . . . 7 ⊢ (𝑧 ∈ 𝐴 → 𝑧 ⊆ ℋ)
9	4, 8	sstrd 3994	. . . . . 6 ⊢ (𝑧 ∈ 𝐴 → ∩ 𝐴 ⊆ ℋ)
10	9	exlimiv 1930	. . . . 5 ⊢ (∃𝑧 𝑧 ∈ 𝐴 → ∩ 𝐴 ⊆ ℋ)
11	3, 10	sylbi 217	. . . 4 ⊢ (𝐴 ≠ ∅ → ∩ 𝐴 ⊆ ℋ)
12	2, 11	ax-mp 5	. . 3 ⊢ ∩ 𝐴 ⊆ ℋ
13		ax-hv0cl 31022	. . . . . 6 ⊢ 0ℎ ∈ ℋ
14	13	elexi 3503	. . . . 5 ⊢ 0ℎ ∈ V
15	14	elint2 4953	. . . 4 ⊢ (0ℎ ∈ ∩ 𝐴 ↔ ∀𝑧 ∈ 𝐴 0ℎ ∈ 𝑧)
16		sh0 31235	. . . . 5 ⊢ (𝑧 ∈ Sℋ → 0ℎ ∈ 𝑧)
17	6, 16	syl 17	. . . 4 ⊢ (𝑧 ∈ 𝐴 → 0ℎ ∈ 𝑧)
18	15, 17	mprgbir 3068	. . 3 ⊢ 0ℎ ∈ ∩ 𝐴
19	12, 18	pm3.2i 470	. 2 ⊢ (∩ 𝐴 ⊆ ℋ ∧ 0ℎ ∈ ∩ 𝐴)
20		elinti 4955	. . . . . . . . 9 ⊢ (𝑥 ∈ ∩ 𝐴 → (𝑧 ∈ 𝐴 → 𝑥 ∈ 𝑧))
21	20	com12 32	. . . . . . . 8 ⊢ (𝑧 ∈ 𝐴 → (𝑥 ∈ ∩ 𝐴 → 𝑥 ∈ 𝑧))
22		elinti 4955	. . . . . . . . 9 ⊢ (𝑦 ∈ ∩ 𝐴 → (𝑧 ∈ 𝐴 → 𝑦 ∈ 𝑧))
23	22	com12 32	. . . . . . . 8 ⊢ (𝑧 ∈ 𝐴 → (𝑦 ∈ ∩ 𝐴 → 𝑦 ∈ 𝑧))
24		shaddcl 31236	. . . . . . . . . 10 ⊢ ((𝑧 ∈ Sℋ ∧ 𝑥 ∈ 𝑧 ∧ 𝑦 ∈ 𝑧) → (𝑥 +ℎ 𝑦) ∈ 𝑧)
25	6, 24	syl3an1 1164	. . . . . . . . 9 ⊢ ((𝑧 ∈ 𝐴 ∧ 𝑥 ∈ 𝑧 ∧ 𝑦 ∈ 𝑧) → (𝑥 +ℎ 𝑦) ∈ 𝑧)
26	25	3expib 1123	. . . . . . . 8 ⊢ (𝑧 ∈ 𝐴 → ((𝑥 ∈ 𝑧 ∧ 𝑦 ∈ 𝑧) → (𝑥 +ℎ 𝑦) ∈ 𝑧))
27	21, 23, 26	syl2and 608	. . . . . . 7 ⊢ (𝑧 ∈ 𝐴 → ((𝑥 ∈ ∩ 𝐴 ∧ 𝑦 ∈ ∩ 𝐴) → (𝑥 +ℎ 𝑦) ∈ 𝑧))
28	27	com12 32	. . . . . 6 ⊢ ((𝑥 ∈ ∩ 𝐴 ∧ 𝑦 ∈ ∩ 𝐴) → (𝑧 ∈ 𝐴 → (𝑥 +ℎ 𝑦) ∈ 𝑧))
29	28	ralrimiv 3145	. . . . 5 ⊢ ((𝑥 ∈ ∩ 𝐴 ∧ 𝑦 ∈ ∩ 𝐴) → ∀𝑧 ∈ 𝐴 (𝑥 +ℎ 𝑦) ∈ 𝑧)
30		ovex 7464	. . . . . 6 ⊢ (𝑥 +ℎ 𝑦) ∈ V
31	30	elint2 4953	. . . . 5 ⊢ ((𝑥 +ℎ 𝑦) ∈ ∩ 𝐴 ↔ ∀𝑧 ∈ 𝐴 (𝑥 +ℎ 𝑦) ∈ 𝑧)
32	29, 31	sylibr 234	. . . 4 ⊢ ((𝑥 ∈ ∩ 𝐴 ∧ 𝑦 ∈ ∩ 𝐴) → (𝑥 +ℎ 𝑦) ∈ ∩ 𝐴)
33	32	rgen2 3199	. . 3 ⊢ ∀𝑥 ∈ ∩ 𝐴∀𝑦 ∈ ∩ 𝐴(𝑥 +ℎ 𝑦) ∈ ∩ 𝐴
34		shmulcl 31237	. . . . . . . . . 10 ⊢ ((𝑧 ∈ Sℋ ∧ 𝑥 ∈ ℂ ∧ 𝑦 ∈ 𝑧) → (𝑥 ·ℎ 𝑦) ∈ 𝑧)
35	6, 34	syl3an1 1164	. . . . . . . . 9 ⊢ ((𝑧 ∈ 𝐴 ∧ 𝑥 ∈ ℂ ∧ 𝑦 ∈ 𝑧) → (𝑥 ·ℎ 𝑦) ∈ 𝑧)
36	35	3expib 1123	. . . . . . . 8 ⊢ (𝑧 ∈ 𝐴 → ((𝑥 ∈ ℂ ∧ 𝑦 ∈ 𝑧) → (𝑥 ·ℎ 𝑦) ∈ 𝑧))
37	23, 36	sylan2d 605	. . . . . . 7 ⊢ (𝑧 ∈ 𝐴 → ((𝑥 ∈ ℂ ∧ 𝑦 ∈ ∩ 𝐴) → (𝑥 ·ℎ 𝑦) ∈ 𝑧))
38	37	com12 32	. . . . . 6 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ ∩ 𝐴) → (𝑧 ∈ 𝐴 → (𝑥 ·ℎ 𝑦) ∈ 𝑧))
39	38	ralrimiv 3145	. . . . 5 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ ∩ 𝐴) → ∀𝑧 ∈ 𝐴 (𝑥 ·ℎ 𝑦) ∈ 𝑧)
40		ovex 7464	. . . . . 6 ⊢ (𝑥 ·ℎ 𝑦) ∈ V
41	40	elint2 4953	. . . . 5 ⊢ ((𝑥 ·ℎ 𝑦) ∈ ∩ 𝐴 ↔ ∀𝑧 ∈ 𝐴 (𝑥 ·ℎ 𝑦) ∈ 𝑧)
42	39, 41	sylibr 234	. . . 4 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ ∩ 𝐴) → (𝑥 ·ℎ 𝑦) ∈ ∩ 𝐴)
43	42	rgen2 3199	. . 3 ⊢ ∀𝑥 ∈ ℂ ∀𝑦 ∈ ∩ 𝐴(𝑥 ·ℎ 𝑦) ∈ ∩ 𝐴
44	33, 43	pm3.2i 470	. 2 ⊢ (∀𝑥 ∈ ∩ 𝐴∀𝑦 ∈ ∩ 𝐴(𝑥 +ℎ 𝑦) ∈ ∩ 𝐴 ∧ ∀𝑥 ∈ ℂ ∀𝑦 ∈ ∩ 𝐴(𝑥 ·ℎ 𝑦) ∈ ∩ 𝐴)
45		issh2 31228	. 2 ⊢ (∩ 𝐴 ∈ Sℋ ↔ ((∩ 𝐴 ⊆ ℋ ∧ 0ℎ ∈ ∩ 𝐴) ∧ (∀𝑥 ∈ ∩ 𝐴∀𝑦 ∈ ∩ 𝐴(𝑥 +ℎ 𝑦) ∈ ∩ 𝐴 ∧ ∀𝑥 ∈ ℂ ∀𝑦 ∈ ∩ 𝐴(𝑥 ·ℎ 𝑦) ∈ ∩ 𝐴)))
46	19, 44, 45	mpbir2an 711	1 ⊢ ∩ 𝐴 ∈ Sℋ

Syntax hints:   ∧ wa 395  ∃wex 1779   ∈ wcel 2108   ≠ wne 2940  ∀wral 3061   ⊆ wss 3951  ∅c0 4333  ∩ cint 4946  (class class class)co 7431  ℂcc 11153   ℋchba 30938   +_ℎ cva 30939   ·_ℎ csm 30940  0_ℎc0v 30943   S_ℋ csh 30947

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1795  ax-4 1809  ax-5 1910  ax-6 1967  ax-7 2007  ax-8 2110  ax-9 2118  ax-10 2141  ax-11 2157  ax-12 2177  ax-ext 2708  ax-sep 5296  ax-nul 5306  ax-pr 5432  ax-hilex 31018  ax-hfvadd 31019  ax-hv0cl 31022  ax-hfvmul 31024

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2065  df-mo 2540  df-eu 2569  df-clab 2715  df-cleq 2729  df-clel 2816  df-nfc 2892  df-ne 2941  df-ral 3062  df-rex 3071  df-rab 3437  df-v 3482  df-sbc 3789  df-csb 3900  df-dif 3954  df-un 3956  df-in 3958  df-ss 3968  df-nul 4334  df-if 4526  df-pw 4602  df-sn 4627  df-pr 4629  df-op 4633  df-uni 4908  df-int 4947  df-iun 4993  df-br 5144  df-opab 5206  df-id 5578  df-xp 5691  df-rel 5692  df-cnv 5693  df-co 5694  df-dm 5695  df-rn 5696  df-res 5697  df-ima 5698  df-iota 6514  df-fun 6563  df-fn 6564  df-f 6565  df-fv 6569  df-ov 7434  df-sh 31226

This theorem is referenced by:  shintcl  31349  chintcli  31350  shincli  31381