Theorem shscli 29100

Description: Closure of subspace sum. (Contributed by NM, 15-Oct-1999.) (Revised by Mario Carneiro, 23-Dec-2013.) (New usage is discouraged.)

Hypotheses

Ref	Expression
shscl.1	⊢ 𝐴 ∈ Sℋ
shscl.2	⊢ 𝐵 ∈ Sℋ

Assertion

Ref	Expression
shscli	⊢ (𝐴 +ℋ 𝐵) ∈ Sℋ

Proof of Theorem shscli

Dummy variables 𝑥 𝑓 𝑦 𝑧 𝑤 𝑔 𝑣 𝑢 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		shscl.1	. . . 4 ⊢ 𝐴 ∈ Sℋ
2		shscl.2	. . . 4 ⊢ 𝐵 ∈ Sℋ
3		shsss 29096	. . . 4 ⊢ ((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) → (𝐴 +ℋ 𝐵) ⊆ ℋ)
4	1, 2, 3	mp2an 691	. . 3 ⊢ (𝐴 +ℋ 𝐵) ⊆ ℋ
5		sh0 28999	. . . . . 6 ⊢ (𝐴 ∈ Sℋ → 0ℎ ∈ 𝐴)
6	1, 5	ax-mp 5	. . . . 5 ⊢ 0ℎ ∈ 𝐴
7		sh0 28999	. . . . . 6 ⊢ (𝐵 ∈ Sℋ → 0ℎ ∈ 𝐵)
8	2, 7	ax-mp 5	. . . . 5 ⊢ 0ℎ ∈ 𝐵
9		ax-hv0cl 28786	. . . . . . 7 ⊢ 0ℎ ∈ ℋ
10	9	hvaddid2i 28812	. . . . . 6 ⊢ (0ℎ +ℎ 0ℎ) = 0ℎ
11	10	eqcomi 2807	. . . . 5 ⊢ 0ℎ = (0ℎ +ℎ 0ℎ)
12		rspceov 7182	. . . . 5 ⊢ ((0ℎ ∈ 𝐴 ∧ 0ℎ ∈ 𝐵 ∧ 0ℎ = (0ℎ +ℎ 0ℎ)) → ∃𝑥 ∈ 𝐴 ∃𝑦 ∈ 𝐵 0ℎ = (𝑥 +ℎ 𝑦))
13	6, 8, 11, 12	mp3an 1458	. . . 4 ⊢ ∃𝑥 ∈ 𝐴 ∃𝑦 ∈ 𝐵 0ℎ = (𝑥 +ℎ 𝑦)
14	1, 2	shseli 29099	. . . 4 ⊢ (0ℎ ∈ (𝐴 +ℋ 𝐵) ↔ ∃𝑥 ∈ 𝐴 ∃𝑦 ∈ 𝐵 0ℎ = (𝑥 +ℎ 𝑦))
15	13, 14	mpbir 234	. . 3 ⊢ 0ℎ ∈ (𝐴 +ℋ 𝐵)
16	4, 15	pm3.2i 474	. 2 ⊢ ((𝐴 +ℋ 𝐵) ⊆ ℋ ∧ 0ℎ ∈ (𝐴 +ℋ 𝐵))
17	1, 2	shseli 29099	. . . . . 6 ⊢ (𝑥 ∈ (𝐴 +ℋ 𝐵) ↔ ∃𝑧 ∈ 𝐴 ∃𝑤 ∈ 𝐵 𝑥 = (𝑧 +ℎ 𝑤))
18	1, 2	shseli 29099	. . . . . 6 ⊢ (𝑦 ∈ (𝐴 +ℋ 𝐵) ↔ ∃𝑣 ∈ 𝐴 ∃𝑢 ∈ 𝐵 𝑦 = (𝑣 +ℎ 𝑢))
19		shaddcl 29000	. . . . . . . . . . . . . . . 16 ⊢ ((𝐴 ∈ Sℋ ∧ 𝑧 ∈ 𝐴 ∧ 𝑣 ∈ 𝐴) → (𝑧 +ℎ 𝑣) ∈ 𝐴)
20	1, 19	mp3an1 1445	. . . . . . . . . . . . . . 15 ⊢ ((𝑧 ∈ 𝐴 ∧ 𝑣 ∈ 𝐴) → (𝑧 +ℎ 𝑣) ∈ 𝐴)
21	20	ad2ant2r 746	. . . . . . . . . . . . . 14 ⊢ (((𝑧 ∈ 𝐴 ∧ 𝑤 ∈ 𝐵) ∧ (𝑣 ∈ 𝐴 ∧ 𝑢 ∈ 𝐵)) → (𝑧 +ℎ 𝑣) ∈ 𝐴)
22	21	ad2ant2r 746	. . . . . . . . . . . . 13 ⊢ ((((𝑧 ∈ 𝐴 ∧ 𝑤 ∈ 𝐵) ∧ 𝑥 = (𝑧 +ℎ 𝑤)) ∧ ((𝑣 ∈ 𝐴 ∧ 𝑢 ∈ 𝐵) ∧ 𝑦 = (𝑣 +ℎ 𝑢))) → (𝑧 +ℎ 𝑣) ∈ 𝐴)
23		shaddcl 29000	. . . . . . . . . . . . . . . 16 ⊢ ((𝐵 ∈ Sℋ ∧ 𝑤 ∈ 𝐵 ∧ 𝑢 ∈ 𝐵) → (𝑤 +ℎ 𝑢) ∈ 𝐵)
24	2, 23	mp3an1 1445	. . . . . . . . . . . . . . 15 ⊢ ((𝑤 ∈ 𝐵 ∧ 𝑢 ∈ 𝐵) → (𝑤 +ℎ 𝑢) ∈ 𝐵)
25	24	ad2ant2l 745	. . . . . . . . . . . . . 14 ⊢ (((𝑧 ∈ 𝐴 ∧ 𝑤 ∈ 𝐵) ∧ (𝑣 ∈ 𝐴 ∧ 𝑢 ∈ 𝐵)) → (𝑤 +ℎ 𝑢) ∈ 𝐵)
26	25	ad2ant2r 746	. . . . . . . . . . . . 13 ⊢ ((((𝑧 ∈ 𝐴 ∧ 𝑤 ∈ 𝐵) ∧ 𝑥 = (𝑧 +ℎ 𝑤)) ∧ ((𝑣 ∈ 𝐴 ∧ 𝑢 ∈ 𝐵) ∧ 𝑦 = (𝑣 +ℎ 𝑢))) → (𝑤 +ℎ 𝑢) ∈ 𝐵)
27		oveq12 7144	. . . . . . . . . . . . . . 15 ⊢ ((𝑥 = (𝑧 +ℎ 𝑤) ∧ 𝑦 = (𝑣 +ℎ 𝑢)) → (𝑥 +ℎ 𝑦) = ((𝑧 +ℎ 𝑤) +ℎ (𝑣 +ℎ 𝑢)))
28	27	ad2ant2l 745	. . . . . . . . . . . . . 14 ⊢ ((((𝑧 ∈ 𝐴 ∧ 𝑤 ∈ 𝐵) ∧ 𝑥 = (𝑧 +ℎ 𝑤)) ∧ ((𝑣 ∈ 𝐴 ∧ 𝑢 ∈ 𝐵) ∧ 𝑦 = (𝑣 +ℎ 𝑢))) → (𝑥 +ℎ 𝑦) = ((𝑧 +ℎ 𝑤) +ℎ (𝑣 +ℎ 𝑢)))
29	1	sheli 28997	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑧 ∈ 𝐴 → 𝑧 ∈ ℋ)
30	1	sheli 28997	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑣 ∈ 𝐴 → 𝑣 ∈ ℋ)
31	29, 30	anim12i 615	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑧 ∈ 𝐴 ∧ 𝑣 ∈ 𝐴) → (𝑧 ∈ ℋ ∧ 𝑣 ∈ ℋ))
32	2	sheli 28997	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑤 ∈ 𝐵 → 𝑤 ∈ ℋ)
33	2	sheli 28997	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑢 ∈ 𝐵 → 𝑢 ∈ ℋ)
34	32, 33	anim12i 615	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑤 ∈ 𝐵 ∧ 𝑢 ∈ 𝐵) → (𝑤 ∈ ℋ ∧ 𝑢 ∈ ℋ))
35		hvadd4 28819	. . . . . . . . . . . . . . . . 17 ⊢ (((𝑧 ∈ ℋ ∧ 𝑣 ∈ ℋ) ∧ (𝑤 ∈ ℋ ∧ 𝑢 ∈ ℋ)) → ((𝑧 +ℎ 𝑣) +ℎ (𝑤 +ℎ 𝑢)) = ((𝑧 +ℎ 𝑤) +ℎ (𝑣 +ℎ 𝑢)))
36	31, 34, 35	syl2an 598	. . . . . . . . . . . . . . . 16 ⊢ (((𝑧 ∈ 𝐴 ∧ 𝑣 ∈ 𝐴) ∧ (𝑤 ∈ 𝐵 ∧ 𝑢 ∈ 𝐵)) → ((𝑧 +ℎ 𝑣) +ℎ (𝑤 +ℎ 𝑢)) = ((𝑧 +ℎ 𝑤) +ℎ (𝑣 +ℎ 𝑢)))
37	36	an4s 659	. . . . . . . . . . . . . . 15 ⊢ (((𝑧 ∈ 𝐴 ∧ 𝑤 ∈ 𝐵) ∧ (𝑣 ∈ 𝐴 ∧ 𝑢 ∈ 𝐵)) → ((𝑧 +ℎ 𝑣) +ℎ (𝑤 +ℎ 𝑢)) = ((𝑧 +ℎ 𝑤) +ℎ (𝑣 +ℎ 𝑢)))
38	37	ad2ant2r 746	. . . . . . . . . . . . . 14 ⊢ ((((𝑧 ∈ 𝐴 ∧ 𝑤 ∈ 𝐵) ∧ 𝑥 = (𝑧 +ℎ 𝑤)) ∧ ((𝑣 ∈ 𝐴 ∧ 𝑢 ∈ 𝐵) ∧ 𝑦 = (𝑣 +ℎ 𝑢))) → ((𝑧 +ℎ 𝑣) +ℎ (𝑤 +ℎ 𝑢)) = ((𝑧 +ℎ 𝑤) +ℎ (𝑣 +ℎ 𝑢)))
39	28, 38	eqtr4d 2836	. . . . . . . . . . . . 13 ⊢ ((((𝑧 ∈ 𝐴 ∧ 𝑤 ∈ 𝐵) ∧ 𝑥 = (𝑧 +ℎ 𝑤)) ∧ ((𝑣 ∈ 𝐴 ∧ 𝑢 ∈ 𝐵) ∧ 𝑦 = (𝑣 +ℎ 𝑢))) → (𝑥 +ℎ 𝑦) = ((𝑧 +ℎ 𝑣) +ℎ (𝑤 +ℎ 𝑢)))
40		rspceov 7182	. . . . . . . . . . . . 13 ⊢ (((𝑧 +ℎ 𝑣) ∈ 𝐴 ∧ (𝑤 +ℎ 𝑢) ∈ 𝐵 ∧ (𝑥 +ℎ 𝑦) = ((𝑧 +ℎ 𝑣) +ℎ (𝑤 +ℎ 𝑢))) → ∃𝑓 ∈ 𝐴 ∃𝑔 ∈ 𝐵 (𝑥 +ℎ 𝑦) = (𝑓 +ℎ 𝑔))
41	22, 26, 39, 40	syl3anc 1368	. . . . . . . . . . . 12 ⊢ ((((𝑧 ∈ 𝐴 ∧ 𝑤 ∈ 𝐵) ∧ 𝑥 = (𝑧 +ℎ 𝑤)) ∧ ((𝑣 ∈ 𝐴 ∧ 𝑢 ∈ 𝐵) ∧ 𝑦 = (𝑣 +ℎ 𝑢))) → ∃𝑓 ∈ 𝐴 ∃𝑔 ∈ 𝐵 (𝑥 +ℎ 𝑦) = (𝑓 +ℎ 𝑔))
42	41	ancoms 462	. . . . . . . . . . 11 ⊢ ((((𝑣 ∈ 𝐴 ∧ 𝑢 ∈ 𝐵) ∧ 𝑦 = (𝑣 +ℎ 𝑢)) ∧ ((𝑧 ∈ 𝐴 ∧ 𝑤 ∈ 𝐵) ∧ 𝑥 = (𝑧 +ℎ 𝑤))) → ∃𝑓 ∈ 𝐴 ∃𝑔 ∈ 𝐵 (𝑥 +ℎ 𝑦) = (𝑓 +ℎ 𝑔))
43	42	exp43 440	. . . . . . . . . 10 ⊢ ((𝑣 ∈ 𝐴 ∧ 𝑢 ∈ 𝐵) → (𝑦 = (𝑣 +ℎ 𝑢) → ((𝑧 ∈ 𝐴 ∧ 𝑤 ∈ 𝐵) → (𝑥 = (𝑧 +ℎ 𝑤) → ∃𝑓 ∈ 𝐴 ∃𝑔 ∈ 𝐵 (𝑥 +ℎ 𝑦) = (𝑓 +ℎ 𝑔)))))
44	43	rexlimivv 3251	. . . . . . . . 9 ⊢ (∃𝑣 ∈ 𝐴 ∃𝑢 ∈ 𝐵 𝑦 = (𝑣 +ℎ 𝑢) → ((𝑧 ∈ 𝐴 ∧ 𝑤 ∈ 𝐵) → (𝑥 = (𝑧 +ℎ 𝑤) → ∃𝑓 ∈ 𝐴 ∃𝑔 ∈ 𝐵 (𝑥 +ℎ 𝑦) = (𝑓 +ℎ 𝑔))))
45	44	com3l 89	. . . . . . . 8 ⊢ ((𝑧 ∈ 𝐴 ∧ 𝑤 ∈ 𝐵) → (𝑥 = (𝑧 +ℎ 𝑤) → (∃𝑣 ∈ 𝐴 ∃𝑢 ∈ 𝐵 𝑦 = (𝑣 +ℎ 𝑢) → ∃𝑓 ∈ 𝐴 ∃𝑔 ∈ 𝐵 (𝑥 +ℎ 𝑦) = (𝑓 +ℎ 𝑔))))
46	45	rexlimivv 3251	. . . . . . 7 ⊢ (∃𝑧 ∈ 𝐴 ∃𝑤 ∈ 𝐵 𝑥 = (𝑧 +ℎ 𝑤) → (∃𝑣 ∈ 𝐴 ∃𝑢 ∈ 𝐵 𝑦 = (𝑣 +ℎ 𝑢) → ∃𝑓 ∈ 𝐴 ∃𝑔 ∈ 𝐵 (𝑥 +ℎ 𝑦) = (𝑓 +ℎ 𝑔)))
47	46	imp 410	. . . . . 6 ⊢ ((∃𝑧 ∈ 𝐴 ∃𝑤 ∈ 𝐵 𝑥 = (𝑧 +ℎ 𝑤) ∧ ∃𝑣 ∈ 𝐴 ∃𝑢 ∈ 𝐵 𝑦 = (𝑣 +ℎ 𝑢)) → ∃𝑓 ∈ 𝐴 ∃𝑔 ∈ 𝐵 (𝑥 +ℎ 𝑦) = (𝑓 +ℎ 𝑔))
48	17, 18, 47	syl2anb 600	. . . . 5 ⊢ ((𝑥 ∈ (𝐴 +ℋ 𝐵) ∧ 𝑦 ∈ (𝐴 +ℋ 𝐵)) → ∃𝑓 ∈ 𝐴 ∃𝑔 ∈ 𝐵 (𝑥 +ℎ 𝑦) = (𝑓 +ℎ 𝑔))
49	1, 2	shseli 29099	. . . . 5 ⊢ ((𝑥 +ℎ 𝑦) ∈ (𝐴 +ℋ 𝐵) ↔ ∃𝑓 ∈ 𝐴 ∃𝑔 ∈ 𝐵 (𝑥 +ℎ 𝑦) = (𝑓 +ℎ 𝑔))
50	48, 49	sylibr 237	. . . 4 ⊢ ((𝑥 ∈ (𝐴 +ℋ 𝐵) ∧ 𝑦 ∈ (𝐴 +ℋ 𝐵)) → (𝑥 +ℎ 𝑦) ∈ (𝐴 +ℋ 𝐵))
51	50	rgen2 3168	. . 3 ⊢ ∀𝑥 ∈ (𝐴 +ℋ 𝐵)∀𝑦 ∈ (𝐴 +ℋ 𝐵)(𝑥 +ℎ 𝑦) ∈ (𝐴 +ℋ 𝐵)
52		shmulcl 29001	. . . . . . . . . . . . . 14 ⊢ ((𝐴 ∈ Sℋ ∧ 𝑥 ∈ ℂ ∧ 𝑣 ∈ 𝐴) → (𝑥 ·ℎ 𝑣) ∈ 𝐴)
53	1, 52	mp3an1 1445	. . . . . . . . . . . . 13 ⊢ ((𝑥 ∈ ℂ ∧ 𝑣 ∈ 𝐴) → (𝑥 ·ℎ 𝑣) ∈ 𝐴)
54	53	adantrr 716	. . . . . . . . . . . 12 ⊢ ((𝑥 ∈ ℂ ∧ (𝑣 ∈ 𝐴 ∧ (𝑢 ∈ 𝐵 ∧ 𝑦 = (𝑣 +ℎ 𝑢)))) → (𝑥 ·ℎ 𝑣) ∈ 𝐴)
55		shmulcl 29001	. . . . . . . . . . . . . . 15 ⊢ ((𝐵 ∈ Sℋ ∧ 𝑥 ∈ ℂ ∧ 𝑢 ∈ 𝐵) → (𝑥 ·ℎ 𝑢) ∈ 𝐵)
56	2, 55	mp3an1 1445	. . . . . . . . . . . . . 14 ⊢ ((𝑥 ∈ ℂ ∧ 𝑢 ∈ 𝐵) → (𝑥 ·ℎ 𝑢) ∈ 𝐵)
57	56	adantrr 716	. . . . . . . . . . . . 13 ⊢ ((𝑥 ∈ ℂ ∧ (𝑢 ∈ 𝐵 ∧ 𝑦 = (𝑣 +ℎ 𝑢))) → (𝑥 ·ℎ 𝑢) ∈ 𝐵)
58	57	adantrl 715	. . . . . . . . . . . 12 ⊢ ((𝑥 ∈ ℂ ∧ (𝑣 ∈ 𝐴 ∧ (𝑢 ∈ 𝐵 ∧ 𝑦 = (𝑣 +ℎ 𝑢)))) → (𝑥 ·ℎ 𝑢) ∈ 𝐵)
59		oveq2 7143	. . . . . . . . . . . . . . 15 ⊢ (𝑦 = (𝑣 +ℎ 𝑢) → (𝑥 ·ℎ 𝑦) = (𝑥 ·ℎ (𝑣 +ℎ 𝑢)))
60	59	adantl 485	. . . . . . . . . . . . . 14 ⊢ ((𝑢 ∈ 𝐵 ∧ 𝑦 = (𝑣 +ℎ 𝑢)) → (𝑥 ·ℎ 𝑦) = (𝑥 ·ℎ (𝑣 +ℎ 𝑢)))
61	60	ad2antll 728	. . . . . . . . . . . . 13 ⊢ ((𝑥 ∈ ℂ ∧ (𝑣 ∈ 𝐴 ∧ (𝑢 ∈ 𝐵 ∧ 𝑦 = (𝑣 +ℎ 𝑢)))) → (𝑥 ·ℎ 𝑦) = (𝑥 ·ℎ (𝑣 +ℎ 𝑢)))
62		id 22	. . . . . . . . . . . . . . . 16 ⊢ (𝑥 ∈ ℂ → 𝑥 ∈ ℂ)
63		ax-hvdistr1 28791	. . . . . . . . . . . . . . . 16 ⊢ ((𝑥 ∈ ℂ ∧ 𝑣 ∈ ℋ ∧ 𝑢 ∈ ℋ) → (𝑥 ·ℎ (𝑣 +ℎ 𝑢)) = ((𝑥 ·ℎ 𝑣) +ℎ (𝑥 ·ℎ 𝑢)))
64	62, 30, 33, 63	syl3an 1157	. . . . . . . . . . . . . . 15 ⊢ ((𝑥 ∈ ℂ ∧ 𝑣 ∈ 𝐴 ∧ 𝑢 ∈ 𝐵) → (𝑥 ·ℎ (𝑣 +ℎ 𝑢)) = ((𝑥 ·ℎ 𝑣) +ℎ (𝑥 ·ℎ 𝑢)))
65	64	3expb 1117	. . . . . . . . . . . . . 14 ⊢ ((𝑥 ∈ ℂ ∧ (𝑣 ∈ 𝐴 ∧ 𝑢 ∈ 𝐵)) → (𝑥 ·ℎ (𝑣 +ℎ 𝑢)) = ((𝑥 ·ℎ 𝑣) +ℎ (𝑥 ·ℎ 𝑢)))
66	65	adantrrr 724	. . . . . . . . . . . . 13 ⊢ ((𝑥 ∈ ℂ ∧ (𝑣 ∈ 𝐴 ∧ (𝑢 ∈ 𝐵 ∧ 𝑦 = (𝑣 +ℎ 𝑢)))) → (𝑥 ·ℎ (𝑣 +ℎ 𝑢)) = ((𝑥 ·ℎ 𝑣) +ℎ (𝑥 ·ℎ 𝑢)))
67	61, 66	eqtrd 2833	. . . . . . . . . . . 12 ⊢ ((𝑥 ∈ ℂ ∧ (𝑣 ∈ 𝐴 ∧ (𝑢 ∈ 𝐵 ∧ 𝑦 = (𝑣 +ℎ 𝑢)))) → (𝑥 ·ℎ 𝑦) = ((𝑥 ·ℎ 𝑣) +ℎ (𝑥 ·ℎ 𝑢)))
68		rspceov 7182	. . . . . . . . . . . 12 ⊢ (((𝑥 ·ℎ 𝑣) ∈ 𝐴 ∧ (𝑥 ·ℎ 𝑢) ∈ 𝐵 ∧ (𝑥 ·ℎ 𝑦) = ((𝑥 ·ℎ 𝑣) +ℎ (𝑥 ·ℎ 𝑢))) → ∃𝑓 ∈ 𝐴 ∃𝑔 ∈ 𝐵 (𝑥 ·ℎ 𝑦) = (𝑓 +ℎ 𝑔))
69	54, 58, 67, 68	syl3anc 1368	. . . . . . . . . . 11 ⊢ ((𝑥 ∈ ℂ ∧ (𝑣 ∈ 𝐴 ∧ (𝑢 ∈ 𝐵 ∧ 𝑦 = (𝑣 +ℎ 𝑢)))) → ∃𝑓 ∈ 𝐴 ∃𝑔 ∈ 𝐵 (𝑥 ·ℎ 𝑦) = (𝑓 +ℎ 𝑔))
70	69	ancoms 462	. . . . . . . . . 10 ⊢ (((𝑣 ∈ 𝐴 ∧ (𝑢 ∈ 𝐵 ∧ 𝑦 = (𝑣 +ℎ 𝑢))) ∧ 𝑥 ∈ ℂ) → ∃𝑓 ∈ 𝐴 ∃𝑔 ∈ 𝐵 (𝑥 ·ℎ 𝑦) = (𝑓 +ℎ 𝑔))
71	70	exp42 439	. . . . . . . . 9 ⊢ (𝑣 ∈ 𝐴 → (𝑢 ∈ 𝐵 → (𝑦 = (𝑣 +ℎ 𝑢) → (𝑥 ∈ ℂ → ∃𝑓 ∈ 𝐴 ∃𝑔 ∈ 𝐵 (𝑥 ·ℎ 𝑦) = (𝑓 +ℎ 𝑔)))))
72	71	imp 410	. . . . . . . 8 ⊢ ((𝑣 ∈ 𝐴 ∧ 𝑢 ∈ 𝐵) → (𝑦 = (𝑣 +ℎ 𝑢) → (𝑥 ∈ ℂ → ∃𝑓 ∈ 𝐴 ∃𝑔 ∈ 𝐵 (𝑥 ·ℎ 𝑦) = (𝑓 +ℎ 𝑔))))
73	72	rexlimivv 3251	. . . . . . 7 ⊢ (∃𝑣 ∈ 𝐴 ∃𝑢 ∈ 𝐵 𝑦 = (𝑣 +ℎ 𝑢) → (𝑥 ∈ ℂ → ∃𝑓 ∈ 𝐴 ∃𝑔 ∈ 𝐵 (𝑥 ·ℎ 𝑦) = (𝑓 +ℎ 𝑔)))
74	73	impcom 411	. . . . . 6 ⊢ ((𝑥 ∈ ℂ ∧ ∃𝑣 ∈ 𝐴 ∃𝑢 ∈ 𝐵 𝑦 = (𝑣 +ℎ 𝑢)) → ∃𝑓 ∈ 𝐴 ∃𝑔 ∈ 𝐵 (𝑥 ·ℎ 𝑦) = (𝑓 +ℎ 𝑔))
75	18, 74	sylan2b 596	. . . . 5 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ (𝐴 +ℋ 𝐵)) → ∃𝑓 ∈ 𝐴 ∃𝑔 ∈ 𝐵 (𝑥 ·ℎ 𝑦) = (𝑓 +ℎ 𝑔))
76	1, 2	shseli 29099	. . . . 5 ⊢ ((𝑥 ·ℎ 𝑦) ∈ (𝐴 +ℋ 𝐵) ↔ ∃𝑓 ∈ 𝐴 ∃𝑔 ∈ 𝐵 (𝑥 ·ℎ 𝑦) = (𝑓 +ℎ 𝑔))
77	75, 76	sylibr 237	. . . 4 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ (𝐴 +ℋ 𝐵)) → (𝑥 ·ℎ 𝑦) ∈ (𝐴 +ℋ 𝐵))
78	77	rgen2 3168	. . 3 ⊢ ∀𝑥 ∈ ℂ ∀𝑦 ∈ (𝐴 +ℋ 𝐵)(𝑥 ·ℎ 𝑦) ∈ (𝐴 +ℋ 𝐵)
79	51, 78	pm3.2i 474	. 2 ⊢ (∀𝑥 ∈ (𝐴 +ℋ 𝐵)∀𝑦 ∈ (𝐴 +ℋ 𝐵)(𝑥 +ℎ 𝑦) ∈ (𝐴 +ℋ 𝐵) ∧ ∀𝑥 ∈ ℂ ∀𝑦 ∈ (𝐴 +ℋ 𝐵)(𝑥 ·ℎ 𝑦) ∈ (𝐴 +ℋ 𝐵))
80		issh2 28992	. 2 ⊢ ((𝐴 +ℋ 𝐵) ∈ Sℋ ↔ (((𝐴 +ℋ 𝐵) ⊆ ℋ ∧ 0ℎ ∈ (𝐴 +ℋ 𝐵)) ∧ (∀𝑥 ∈ (𝐴 +ℋ 𝐵)∀𝑦 ∈ (𝐴 +ℋ 𝐵)(𝑥 +ℎ 𝑦) ∈ (𝐴 +ℋ 𝐵) ∧ ∀𝑥 ∈ ℂ ∀𝑦 ∈ (𝐴 +ℋ 𝐵)(𝑥 ·ℎ 𝑦) ∈ (𝐴 +ℋ 𝐵))))
81	16, 79, 80	mpbir2an 710	1 ⊢ (𝐴 +ℋ 𝐵) ∈ Sℋ

Syntax hints:   → wi 4   ∧ wa 399   = wceq 1538   ∈ wcel 2111  ∀wral 3106  ∃wrex 3107   ⊆ wss 3881  (class class class)co 7135  ℂcc 10524   ℋchba 28702   +_ℎ cva 28703   ·_ℎ csm 28704  0_ℎc0v 28707   S_ℋ csh 28711   +_ℋ cph 28714

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2113  ax-9 2121  ax-10 2142  ax-11 2158  ax-12 2175  ax-ext 2770  ax-rep 5154  ax-sep 5167  ax-nul 5174  ax-pow 5231  ax-pr 5295  ax-un 7441  ax-resscn 10583  ax-1cn 10584  ax-icn 10585  ax-addcl 10586  ax-addrcl 10587  ax-mulcl 10588  ax-mulrcl 10589  ax-mulcom 10590  ax-addass 10591  ax-mulass 10592  ax-distr 10593  ax-i2m1 10594  ax-1ne0 10595  ax-1rid 10596  ax-rnegex 10597  ax-rrecex 10598  ax-cnre 10599  ax-pre-lttri 10600  ax-pre-lttrn 10601  ax-pre-ltadd 10602  ax-hilex 28782  ax-hfvadd 28783  ax-hvcom 28784  ax-hvass 28785  ax-hv0cl 28786  ax-hvaddid 28787  ax-hfvmul 28788  ax-hvmulid 28789  ax-hvdistr1 28791  ax-hvdistr2 28792  ax-hvmul0 28793

This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3or 1085  df-3an 1086  df-tru 1541  df-ex 1782  df-nf 1786  df-sb 2070  df-mo 2598  df-eu 2629  df-clab 2777  df-cleq 2791  df-clel 2870  df-nfc 2938  df-ne 2988  df-nel 3092  df-ral 3111  df-rex 3112  df-reu 3113  df-rab 3115  df-v 3443  df-sbc 3721  df-csb 3829  df-dif 3884  df-un 3886  df-in 3888  df-ss 3898  df-nul 4244  df-if 4426  df-pw 4499  df-sn 4526  df-pr 4528  df-op 4532  df-uni 4801  df-iun 4883  df-br 5031  df-opab 5093  df-mpt 5111  df-id 5425  df-po 5438  df-so 5439  df-xp 5525  df-rel 5526  df-cnv 5527  df-co 5528  df-dm 5529  df-rn 5530  df-res 5531  df-ima 5532  df-iota 6283  df-fun 6326  df-fn 6327  df-f 6328  df-f1 6329  df-fo 6330  df-f1o 6331  df-fv 6332  df-riota 7093  df-ov 7138  df-oprab 7139  df-mpo 7140  df-er 8272  df-en 8493  df-dom 8494  df-sdom 8495  df-pnf 10666  df-mnf 10667  df-ltxr 10669  df-sub 10861  df-neg 10862  df-grpo 28276  df-ablo 28328  df-hvsub 28754  df-sh 28990  df-shs 29091

This theorem is referenced by:  shscl  29101  shsval2i  29170  shjshsi  29275  spanuni  29327  5oalem1  29437  5oalem3  29439  5oalem5  29441  5oalem6  29442  5oai  29444  3oalem2  29446  3oalem6  29450  mayete3i  29511  sumdmdlem  30201