Theorem shintcli 28188

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 478	. . . 4 ⊢ 𝐴 ≠ ∅
3		n0 3931	. . . . 5 ⊢ (𝐴 ≠ ∅ ↔ ∃𝑧 𝑧 ∈ 𝐴)
4		intss1 4492	. . . . . . 7 ⊢ (𝑧 ∈ 𝐴 → ∩ 𝐴 ⊆ 𝑧)
5	1	simpli 474	. . . . . . . . 9 ⊢ 𝐴 ⊆ Sℋ
6	5	sseli 3599	. . . . . . . 8 ⊢ (𝑧 ∈ 𝐴 → 𝑧 ∈ Sℋ )
7		shss 28067	. . . . . . . 8 ⊢ (𝑧 ∈ Sℋ → 𝑧 ⊆ ℋ)
8	6, 7	syl 17	. . . . . . 7 ⊢ (𝑧 ∈ 𝐴 → 𝑧 ⊆ ℋ)
9	4, 8	sstrd 3613	. . . . . 6 ⊢ (𝑧 ∈ 𝐴 → ∩ 𝐴 ⊆ ℋ)
10	9	exlimiv 1858	. . . . 5 ⊢ (∃𝑧 𝑧 ∈ 𝐴 → ∩ 𝐴 ⊆ ℋ)
11	3, 10	sylbi 207	. . . 4 ⊢ (𝐴 ≠ ∅ → ∩ 𝐴 ⊆ ℋ)
12	2, 11	ax-mp 5	. . 3 ⊢ ∩ 𝐴 ⊆ ℋ
13		ax-hv0cl 27860	. . . . . 6 ⊢ 0ℎ ∈ ℋ
14	13	elexi 3213	. . . . 5 ⊢ 0ℎ ∈ V
15	14	elint2 4482	. . . 4 ⊢ (0ℎ ∈ ∩ 𝐴 ↔ ∀𝑧 ∈ 𝐴 0ℎ ∈ 𝑧)
16		sh0 28073	. . . . 5 ⊢ (𝑧 ∈ Sℋ → 0ℎ ∈ 𝑧)
17	6, 16	syl 17	. . . 4 ⊢ (𝑧 ∈ 𝐴 → 0ℎ ∈ 𝑧)
18	15, 17	mprgbir 2927	. . 3 ⊢ 0ℎ ∈ ∩ 𝐴
19	12, 18	pm3.2i 471	. 2 ⊢ (∩ 𝐴 ⊆ ℋ ∧ 0ℎ ∈ ∩ 𝐴)
20		elinti 4485	. . . . . . . . 9 ⊢ (𝑥 ∈ ∩ 𝐴 → (𝑧 ∈ 𝐴 → 𝑥 ∈ 𝑧))
21	20	com12 32	. . . . . . . 8 ⊢ (𝑧 ∈ 𝐴 → (𝑥 ∈ ∩ 𝐴 → 𝑥 ∈ 𝑧))
22		elinti 4485	. . . . . . . . 9 ⊢ (𝑦 ∈ ∩ 𝐴 → (𝑧 ∈ 𝐴 → 𝑦 ∈ 𝑧))
23	22	com12 32	. . . . . . . 8 ⊢ (𝑧 ∈ 𝐴 → (𝑦 ∈ ∩ 𝐴 → 𝑦 ∈ 𝑧))
24		shaddcl 28074	. . . . . . . . . 10 ⊢ ((𝑧 ∈ Sℋ ∧ 𝑥 ∈ 𝑧 ∧ 𝑦 ∈ 𝑧) → (𝑥 +ℎ 𝑦) ∈ 𝑧)
25	6, 24	syl3an1 1359	. . . . . . . . 9 ⊢ ((𝑧 ∈ 𝐴 ∧ 𝑥 ∈ 𝑧 ∧ 𝑦 ∈ 𝑧) → (𝑥 +ℎ 𝑦) ∈ 𝑧)
26	25	3expib 1268	. . . . . . . 8 ⊢ (𝑧 ∈ 𝐴 → ((𝑥 ∈ 𝑧 ∧ 𝑦 ∈ 𝑧) → (𝑥 +ℎ 𝑦) ∈ 𝑧))
27	21, 23, 26	syl2and 500	. . . . . . 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 2965	. . . . 5 ⊢ ((𝑥 ∈ ∩ 𝐴 ∧ 𝑦 ∈ ∩ 𝐴) → ∀𝑧 ∈ 𝐴 (𝑥 +ℎ 𝑦) ∈ 𝑧)
30		ovex 6678	. . . . . 6 ⊢ (𝑥 +ℎ 𝑦) ∈ V
31	30	elint2 4482	. . . . 5 ⊢ ((𝑥 +ℎ 𝑦) ∈ ∩ 𝐴 ↔ ∀𝑧 ∈ 𝐴 (𝑥 +ℎ 𝑦) ∈ 𝑧)
32	29, 31	sylibr 224	. . . 4 ⊢ ((𝑥 ∈ ∩ 𝐴 ∧ 𝑦 ∈ ∩ 𝐴) → (𝑥 +ℎ 𝑦) ∈ ∩ 𝐴)
33	32	rgen2a 2977	. . 3 ⊢ ∀𝑥 ∈ ∩ 𝐴∀𝑦 ∈ ∩ 𝐴(𝑥 +ℎ 𝑦) ∈ ∩ 𝐴
34		shmulcl 28075	. . . . . . . . . 10 ⊢ ((𝑧 ∈ Sℋ ∧ 𝑥 ∈ ℂ ∧ 𝑦 ∈ 𝑧) → (𝑥 ·ℎ 𝑦) ∈ 𝑧)
35	6, 34	syl3an1 1359	. . . . . . . . 9 ⊢ ((𝑧 ∈ 𝐴 ∧ 𝑥 ∈ ℂ ∧ 𝑦 ∈ 𝑧) → (𝑥 ·ℎ 𝑦) ∈ 𝑧)
36	35	3expib 1268	. . . . . . . 8 ⊢ (𝑧 ∈ 𝐴 → ((𝑥 ∈ ℂ ∧ 𝑦 ∈ 𝑧) → (𝑥 ·ℎ 𝑦) ∈ 𝑧))
37	23, 36	sylan2d 499	. . . . . . 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 2965	. . . . 5 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ ∩ 𝐴) → ∀𝑧 ∈ 𝐴 (𝑥 ·ℎ 𝑦) ∈ 𝑧)
40		ovex 6678	. . . . . 6 ⊢ (𝑥 ·ℎ 𝑦) ∈ V
41	40	elint2 4482	. . . . 5 ⊢ ((𝑥 ·ℎ 𝑦) ∈ ∩ 𝐴 ↔ ∀𝑧 ∈ 𝐴 (𝑥 ·ℎ 𝑦) ∈ 𝑧)
42	39, 41	sylibr 224	. . . 4 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ ∩ 𝐴) → (𝑥 ·ℎ 𝑦) ∈ ∩ 𝐴)
43	42	rgen2 2975	. . 3 ⊢ ∀𝑥 ∈ ℂ ∀𝑦 ∈ ∩ 𝐴(𝑥 ·ℎ 𝑦) ∈ ∩ 𝐴
44	33, 43	pm3.2i 471	. 2 ⊢ (∀𝑥 ∈ ∩ 𝐴∀𝑦 ∈ ∩ 𝐴(𝑥 +ℎ 𝑦) ∈ ∩ 𝐴 ∧ ∀𝑥 ∈ ℂ ∀𝑦 ∈ ∩ 𝐴(𝑥 ·ℎ 𝑦) ∈ ∩ 𝐴)
45		issh2 28066	. 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 955	1 ⊢ ∩ 𝐴 ∈ Sℋ

Syntax hints:   ∧ wa 384  ∃wex 1704   ∈ wcel 1990   ≠ wne 2794  ∀wral 2912   ⊆ wss 3574  ∅c0 3915  ∩ cint 4475  (class class class)co 6650  ℂcc 9934   ℋchil 27776   +_ℎ cva 27777   ·_ℎ csm 27778  0_ℎc0v 27781   S_ℋ csh 27785

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-sep 4781  ax-nul 4789  ax-pr 4906  ax-hilex 27856  ax-hfvadd 27857  ax-hv0cl 27860  ax-hfvmul 27862

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-ral 2917  df-rex 2918  df-rab 2921  df-v 3202  df-sbc 3436  df-csb 3534  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-int 4476  df-iun 4522  df-br 4654  df-opab 4713  df-id 5024  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-fv 5896  df-ov 6653  df-sh 28064

This theorem is referenced by:  shintcl  28189  chintcli  28190  shincli  28221