Theorem shintcli 28578

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 479	. . . 4 ⊢ 𝐴 ≠ ∅
3		n0 4094	. . . . 5 ⊢ (𝐴 ≠ ∅ ↔ ∃𝑧 𝑧 ∈ 𝐴)
4		intss1 4647	. . . . . . 7 ⊢ (𝑧 ∈ 𝐴 → ∩ 𝐴 ⊆ 𝑧)
5	1	simpli 476	. . . . . . . . 9 ⊢ 𝐴 ⊆ Sℋ
6	5	sseli 3756	. . . . . . . 8 ⊢ (𝑧 ∈ 𝐴 → 𝑧 ∈ Sℋ )
7		shss 28457	. . . . . . . 8 ⊢ (𝑧 ∈ Sℋ → 𝑧 ⊆ ℋ)
8	6, 7	syl 17	. . . . . . 7 ⊢ (𝑧 ∈ 𝐴 → 𝑧 ⊆ ℋ)
9	4, 8	sstrd 3770	. . . . . 6 ⊢ (𝑧 ∈ 𝐴 → ∩ 𝐴 ⊆ ℋ)
10	9	exlimiv 2025	. . . . 5 ⊢ (∃𝑧 𝑧 ∈ 𝐴 → ∩ 𝐴 ⊆ ℋ)
11	3, 10	sylbi 208	. . . 4 ⊢ (𝐴 ≠ ∅ → ∩ 𝐴 ⊆ ℋ)
12	2, 11	ax-mp 5	. . 3 ⊢ ∩ 𝐴 ⊆ ℋ
13		ax-hv0cl 28250	. . . . . 6 ⊢ 0ℎ ∈ ℋ
14	13	elexi 3365	. . . . 5 ⊢ 0ℎ ∈ V
15	14	elint2 4639	. . . 4 ⊢ (0ℎ ∈ ∩ 𝐴 ↔ ∀𝑧 ∈ 𝐴 0ℎ ∈ 𝑧)
16		sh0 28463	. . . . 5 ⊢ (𝑧 ∈ Sℋ → 0ℎ ∈ 𝑧)
17	6, 16	syl 17	. . . 4 ⊢ (𝑧 ∈ 𝐴 → 0ℎ ∈ 𝑧)
18	15, 17	mprgbir 3073	. . 3 ⊢ 0ℎ ∈ ∩ 𝐴
19	12, 18	pm3.2i 462	. 2 ⊢ (∩ 𝐴 ⊆ ℋ ∧ 0ℎ ∈ ∩ 𝐴)
20		elinti 4641	. . . . . . . . 9 ⊢ (𝑥 ∈ ∩ 𝐴 → (𝑧 ∈ 𝐴 → 𝑥 ∈ 𝑧))
21	20	com12 32	. . . . . . . 8 ⊢ (𝑧 ∈ 𝐴 → (𝑥 ∈ ∩ 𝐴 → 𝑥 ∈ 𝑧))
22		elinti 4641	. . . . . . . . 9 ⊢ (𝑦 ∈ ∩ 𝐴 → (𝑧 ∈ 𝐴 → 𝑦 ∈ 𝑧))
23	22	com12 32	. . . . . . . 8 ⊢ (𝑧 ∈ 𝐴 → (𝑦 ∈ ∩ 𝐴 → 𝑦 ∈ 𝑧))
24		shaddcl 28464	. . . . . . . . . 10 ⊢ ((𝑧 ∈ Sℋ ∧ 𝑥 ∈ 𝑧 ∧ 𝑦 ∈ 𝑧) → (𝑥 +ℎ 𝑦) ∈ 𝑧)
25	6, 24	syl3an1 1202	. . . . . . . . 9 ⊢ ((𝑧 ∈ 𝐴 ∧ 𝑥 ∈ 𝑧 ∧ 𝑦 ∈ 𝑧) → (𝑥 +ℎ 𝑦) ∈ 𝑧)
26	25	3expib 1152	. . . . . . . 8 ⊢ (𝑧 ∈ 𝐴 → ((𝑥 ∈ 𝑧 ∧ 𝑦 ∈ 𝑧) → (𝑥 +ℎ 𝑦) ∈ 𝑧))
27	21, 23, 26	syl2and 601	. . . . . . 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 3111	. . . . 5 ⊢ ((𝑥 ∈ ∩ 𝐴 ∧ 𝑦 ∈ ∩ 𝐴) → ∀𝑧 ∈ 𝐴 (𝑥 +ℎ 𝑦) ∈ 𝑧)
30		ovex 6873	. . . . . 6 ⊢ (𝑥 +ℎ 𝑦) ∈ V
31	30	elint2 4639	. . . . 5 ⊢ ((𝑥 +ℎ 𝑦) ∈ ∩ 𝐴 ↔ ∀𝑧 ∈ 𝐴 (𝑥 +ℎ 𝑦) ∈ 𝑧)
32	29, 31	sylibr 225	. . . 4 ⊢ ((𝑥 ∈ ∩ 𝐴 ∧ 𝑦 ∈ ∩ 𝐴) → (𝑥 +ℎ 𝑦) ∈ ∩ 𝐴)
33	32	rgen2a 3123	. . 3 ⊢ ∀𝑥 ∈ ∩ 𝐴∀𝑦 ∈ ∩ 𝐴(𝑥 +ℎ 𝑦) ∈ ∩ 𝐴
34		shmulcl 28465	. . . . . . . . . 10 ⊢ ((𝑧 ∈ Sℋ ∧ 𝑥 ∈ ℂ ∧ 𝑦 ∈ 𝑧) → (𝑥 ·ℎ 𝑦) ∈ 𝑧)
35	6, 34	syl3an1 1202	. . . . . . . . 9 ⊢ ((𝑧 ∈ 𝐴 ∧ 𝑥 ∈ ℂ ∧ 𝑦 ∈ 𝑧) → (𝑥 ·ℎ 𝑦) ∈ 𝑧)
36	35	3expib 1152	. . . . . . . 8 ⊢ (𝑧 ∈ 𝐴 → ((𝑥 ∈ ℂ ∧ 𝑦 ∈ 𝑧) → (𝑥 ·ℎ 𝑦) ∈ 𝑧))
37	23, 36	sylan2d 598	. . . . . . 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 3111	. . . . 5 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ ∩ 𝐴) → ∀𝑧 ∈ 𝐴 (𝑥 ·ℎ 𝑦) ∈ 𝑧)
40		ovex 6873	. . . . . 6 ⊢ (𝑥 ·ℎ 𝑦) ∈ V
41	40	elint2 4639	. . . . 5 ⊢ ((𝑥 ·ℎ 𝑦) ∈ ∩ 𝐴 ↔ ∀𝑧 ∈ 𝐴 (𝑥 ·ℎ 𝑦) ∈ 𝑧)
42	39, 41	sylibr 225	. . . 4 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ ∩ 𝐴) → (𝑥 ·ℎ 𝑦) ∈ ∩ 𝐴)
43	42	rgen2 3121	. . 3 ⊢ ∀𝑥 ∈ ℂ ∀𝑦 ∈ ∩ 𝐴(𝑥 ·ℎ 𝑦) ∈ ∩ 𝐴
44	33, 43	pm3.2i 462	. 2 ⊢ (∀𝑥 ∈ ∩ 𝐴∀𝑦 ∈ ∩ 𝐴(𝑥 +ℎ 𝑦) ∈ ∩ 𝐴 ∧ ∀𝑥 ∈ ℂ ∀𝑦 ∈ ∩ 𝐴(𝑥 ·ℎ 𝑦) ∈ ∩ 𝐴)
45		issh2 28456	. 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 702	1 ⊢ ∩ 𝐴 ∈ Sℋ

Syntax hints:   ∧ wa 384  ∃wex 1874   ∈ wcel 2155   ≠ wne 2936  ∀wral 3054   ⊆ wss 3731  ∅c0 4078  ∩ cint 4632  (class class class)co 6841  ℂcc 10186   ℋchba 28166   +_ℎ cva 28167   ·_ℎ csm 28168  0_ℎc0v 28171   S_ℋ csh 28175

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1890  ax-4 1904  ax-5 2005  ax-6 2069  ax-7 2105  ax-9 2164  ax-10 2183  ax-11 2198  ax-12 2211  ax-13 2349  ax-ext 2742  ax-sep 4940  ax-nul 4948  ax-pr 5061  ax-hilex 28246  ax-hfvadd 28247  ax-hv0cl 28250  ax-hfvmul 28252

This theorem depends on definitions:  df-bi 198  df-an 385  df-or 874  df-3an 1109  df-tru 1656  df-ex 1875  df-nf 1879  df-sb 2062  df-mo 2564  df-eu 2581  df-clab 2751  df-cleq 2757  df-clel 2760  df-nfc 2895  df-ne 2937  df-ral 3059  df-rex 3060  df-rab 3063  df-v 3351  df-sbc 3596  df-csb 3691  df-dif 3734  df-un 3736  df-in 3738  df-ss 3745  df-nul 4079  df-if 4243  df-pw 4316  df-sn 4334  df-pr 4336  df-op 4340  df-uni 4594  df-int 4633  df-iun 4677  df-br 4809  df-opab 4871  df-id 5184  df-xp 5282  df-rel 5283  df-cnv 5284  df-co 5285  df-dm 5286  df-rn 5287  df-res 5288  df-ima 5289  df-iota 6030  df-fun 6069  df-fn 6070  df-f 6071  df-fv 6075  df-ov 6844  df-sh 28454

This theorem is referenced by:  shintcl  28579  chintcli  28580  shincli  28611