Theorem shscli 28693

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 28689	. . . 4 ⊢ ((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) → (𝐴 +ℋ 𝐵) ⊆ ℋ)
4	1, 2, 3	mp2an 684	. . 3 ⊢ (𝐴 +ℋ 𝐵) ⊆ ℋ
5		sh0 28590	. . . . . 6 ⊢ (𝐴 ∈ Sℋ → 0ℎ ∈ 𝐴)
6	1, 5	ax-mp 5	. . . . 5 ⊢ 0ℎ ∈ 𝐴
7		sh0 28590	. . . . . 6 ⊢ (𝐵 ∈ Sℋ → 0ℎ ∈ 𝐵)
8	2, 7	ax-mp 5	. . . . 5 ⊢ 0ℎ ∈ 𝐵
9		ax-hv0cl 28377	. . . . . . 7 ⊢ 0ℎ ∈ ℋ
10	9	hvaddid2i 28403	. . . . . 6 ⊢ (0ℎ +ℎ 0ℎ) = 0ℎ
11	10	eqcomi 2806	. . . . 5 ⊢ 0ℎ = (0ℎ +ℎ 0ℎ)
12		rspceov 6922	. . . . 5 ⊢ ((0ℎ ∈ 𝐴 ∧ 0ℎ ∈ 𝐵 ∧ 0ℎ = (0ℎ +ℎ 0ℎ)) → ∃𝑥 ∈ 𝐴 ∃𝑦 ∈ 𝐵 0ℎ = (𝑥 +ℎ 𝑦))
13	6, 8, 11, 12	mp3an 1586	. . . 4 ⊢ ∃𝑥 ∈ 𝐴 ∃𝑦 ∈ 𝐵 0ℎ = (𝑥 +ℎ 𝑦)
14	1, 2	shseli 28692	. . . 4 ⊢ (0ℎ ∈ (𝐴 +ℋ 𝐵) ↔ ∃𝑥 ∈ 𝐴 ∃𝑦 ∈ 𝐵 0ℎ = (𝑥 +ℎ 𝑦))
15	13, 14	mpbir 223	. . 3 ⊢ 0ℎ ∈ (𝐴 +ℋ 𝐵)
16	4, 15	pm3.2i 463	. 2 ⊢ ((𝐴 +ℋ 𝐵) ⊆ ℋ ∧ 0ℎ ∈ (𝐴 +ℋ 𝐵))
17	1, 2	shseli 28692	. . . . . 6 ⊢ (𝑥 ∈ (𝐴 +ℋ 𝐵) ↔ ∃𝑧 ∈ 𝐴 ∃𝑤 ∈ 𝐵 𝑥 = (𝑧 +ℎ 𝑤))
18	1, 2	shseli 28692	. . . . . 6 ⊢ (𝑦 ∈ (𝐴 +ℋ 𝐵) ↔ ∃𝑣 ∈ 𝐴 ∃𝑢 ∈ 𝐵 𝑦 = (𝑣 +ℎ 𝑢))
19		shaddcl 28591	. . . . . . . . . . . . . . . 16 ⊢ ((𝐴 ∈ Sℋ ∧ 𝑧 ∈ 𝐴 ∧ 𝑣 ∈ 𝐴) → (𝑧 +ℎ 𝑣) ∈ 𝐴)
20	1, 19	mp3an1 1573	. . . . . . . . . . . . . . 15 ⊢ ((𝑧 ∈ 𝐴 ∧ 𝑣 ∈ 𝐴) → (𝑧 +ℎ 𝑣) ∈ 𝐴)
21	20	ad2ant2r 754	. . . . . . . . . . . . . 14 ⊢ (((𝑧 ∈ 𝐴 ∧ 𝑤 ∈ 𝐵) ∧ (𝑣 ∈ 𝐴 ∧ 𝑢 ∈ 𝐵)) → (𝑧 +ℎ 𝑣) ∈ 𝐴)
22	21	ad2ant2r 754	. . . . . . . . . . . . 13 ⊢ ((((𝑧 ∈ 𝐴 ∧ 𝑤 ∈ 𝐵) ∧ 𝑥 = (𝑧 +ℎ 𝑤)) ∧ ((𝑣 ∈ 𝐴 ∧ 𝑢 ∈ 𝐵) ∧ 𝑦 = (𝑣 +ℎ 𝑢))) → (𝑧 +ℎ 𝑣) ∈ 𝐴)
23		shaddcl 28591	. . . . . . . . . . . . . . . 16 ⊢ ((𝐵 ∈ Sℋ ∧ 𝑤 ∈ 𝐵 ∧ 𝑢 ∈ 𝐵) → (𝑤 +ℎ 𝑢) ∈ 𝐵)
24	2, 23	mp3an1 1573	. . . . . . . . . . . . . . 15 ⊢ ((𝑤 ∈ 𝐵 ∧ 𝑢 ∈ 𝐵) → (𝑤 +ℎ 𝑢) ∈ 𝐵)
25	24	ad2ant2l 753	. . . . . . . . . . . . . 14 ⊢ (((𝑧 ∈ 𝐴 ∧ 𝑤 ∈ 𝐵) ∧ (𝑣 ∈ 𝐴 ∧ 𝑢 ∈ 𝐵)) → (𝑤 +ℎ 𝑢) ∈ 𝐵)
26	25	ad2ant2r 754	. . . . . . . . . . . . 13 ⊢ ((((𝑧 ∈ 𝐴 ∧ 𝑤 ∈ 𝐵) ∧ 𝑥 = (𝑧 +ℎ 𝑤)) ∧ ((𝑣 ∈ 𝐴 ∧ 𝑢 ∈ 𝐵) ∧ 𝑦 = (𝑣 +ℎ 𝑢))) → (𝑤 +ℎ 𝑢) ∈ 𝐵)
27		oveq12 6885	. . . . . . . . . . . . . . 15 ⊢ ((𝑥 = (𝑧 +ℎ 𝑤) ∧ 𝑦 = (𝑣 +ℎ 𝑢)) → (𝑥 +ℎ 𝑦) = ((𝑧 +ℎ 𝑤) +ℎ (𝑣 +ℎ 𝑢)))
28	27	ad2ant2l 753	. . . . . . . . . . . . . 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 28588	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑧 ∈ 𝐴 → 𝑧 ∈ ℋ)
30	1	sheli 28588	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑣 ∈ 𝐴 → 𝑣 ∈ ℋ)
31	29, 30	anim12i 607	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑧 ∈ 𝐴 ∧ 𝑣 ∈ 𝐴) → (𝑧 ∈ ℋ ∧ 𝑣 ∈ ℋ))
32	2	sheli 28588	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑤 ∈ 𝐵 → 𝑤 ∈ ℋ)
33	2	sheli 28588	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑢 ∈ 𝐵 → 𝑢 ∈ ℋ)
34	32, 33	anim12i 607	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑤 ∈ 𝐵 ∧ 𝑢 ∈ 𝐵) → (𝑤 ∈ ℋ ∧ 𝑢 ∈ ℋ))
35		hvadd4 28410	. . . . . . . . . . . . . . . . 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 590	. . . . . . . . . . . . . . . 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 651	. . . . . . . . . . . . . . 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 754	. . . . . . . . . . . . . 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 2834	. . . . . . . . . . . . 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 6922	. . . . . . . . . . . . 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 1491	. . . . . . . . . . . 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 451	. . . . . . . . . . 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 428	. . . . . . . . . 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 3215	. . . . . . . . 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 3215	. . . . . . 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 396	. . . . . 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 592	. . . . 5 ⊢ ((𝑥 ∈ (𝐴 +ℋ 𝐵) ∧ 𝑦 ∈ (𝐴 +ℋ 𝐵)) → ∃𝑓 ∈ 𝐴 ∃𝑔 ∈ 𝐵 (𝑥 +ℎ 𝑦) = (𝑓 +ℎ 𝑔))
49	1, 2	shseli 28692	. . . . 5 ⊢ ((𝑥 +ℎ 𝑦) ∈ (𝐴 +ℋ 𝐵) ↔ ∃𝑓 ∈ 𝐴 ∃𝑔 ∈ 𝐵 (𝑥 +ℎ 𝑦) = (𝑓 +ℎ 𝑔))
50	48, 49	sylibr 226	. . . 4 ⊢ ((𝑥 ∈ (𝐴 +ℋ 𝐵) ∧ 𝑦 ∈ (𝐴 +ℋ 𝐵)) → (𝑥 +ℎ 𝑦) ∈ (𝐴 +ℋ 𝐵))
51	50	rgen2a 3156	. . 3 ⊢ ∀𝑥 ∈ (𝐴 +ℋ 𝐵)∀𝑦 ∈ (𝐴 +ℋ 𝐵)(𝑥 +ℎ 𝑦) ∈ (𝐴 +ℋ 𝐵)
52		shmulcl 28592	. . . . . . . . . . . . . 14 ⊢ ((𝐴 ∈ Sℋ ∧ 𝑥 ∈ ℂ ∧ 𝑣 ∈ 𝐴) → (𝑥 ·ℎ 𝑣) ∈ 𝐴)
53	1, 52	mp3an1 1573	. . . . . . . . . . . . 13 ⊢ ((𝑥 ∈ ℂ ∧ 𝑣 ∈ 𝐴) → (𝑥 ·ℎ 𝑣) ∈ 𝐴)
54	53	adantrr 709	. . . . . . . . . . . 12 ⊢ ((𝑥 ∈ ℂ ∧ (𝑣 ∈ 𝐴 ∧ (𝑢 ∈ 𝐵 ∧ 𝑦 = (𝑣 +ℎ 𝑢)))) → (𝑥 ·ℎ 𝑣) ∈ 𝐴)
55		shmulcl 28592	. . . . . . . . . . . . . . 15 ⊢ ((𝐵 ∈ Sℋ ∧ 𝑥 ∈ ℂ ∧ 𝑢 ∈ 𝐵) → (𝑥 ·ℎ 𝑢) ∈ 𝐵)
56	2, 55	mp3an1 1573	. . . . . . . . . . . . . 14 ⊢ ((𝑥 ∈ ℂ ∧ 𝑢 ∈ 𝐵) → (𝑥 ·ℎ 𝑢) ∈ 𝐵)
57	56	adantrr 709	. . . . . . . . . . . . 13 ⊢ ((𝑥 ∈ ℂ ∧ (𝑢 ∈ 𝐵 ∧ 𝑦 = (𝑣 +ℎ 𝑢))) → (𝑥 ·ℎ 𝑢) ∈ 𝐵)
58	57	adantrl 708	. . . . . . . . . . . 12 ⊢ ((𝑥 ∈ ℂ ∧ (𝑣 ∈ 𝐴 ∧ (𝑢 ∈ 𝐵 ∧ 𝑦 = (𝑣 +ℎ 𝑢)))) → (𝑥 ·ℎ 𝑢) ∈ 𝐵)
59		oveq2 6884	. . . . . . . . . . . . . . 15 ⊢ (𝑦 = (𝑣 +ℎ 𝑢) → (𝑥 ·ℎ 𝑦) = (𝑥 ·ℎ (𝑣 +ℎ 𝑢)))
60	59	adantl 474	. . . . . . . . . . . . . 14 ⊢ ((𝑢 ∈ 𝐵 ∧ 𝑦 = (𝑣 +ℎ 𝑢)) → (𝑥 ·ℎ 𝑦) = (𝑥 ·ℎ (𝑣 +ℎ 𝑢)))
61	60	ad2antll 721	. . . . . . . . . . . . 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 28382	. . . . . . . . . . . . . . . 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 1200	. . . . . . . . . . . . . . 15 ⊢ ((𝑥 ∈ ℂ ∧ 𝑣 ∈ 𝐴 ∧ 𝑢 ∈ 𝐵) → (𝑥 ·ℎ (𝑣 +ℎ 𝑢)) = ((𝑥 ·ℎ 𝑣) +ℎ (𝑥 ·ℎ 𝑢)))
65	64	3expb 1150	. . . . . . . . . . . . . 14 ⊢ ((𝑥 ∈ ℂ ∧ (𝑣 ∈ 𝐴 ∧ 𝑢 ∈ 𝐵)) → (𝑥 ·ℎ (𝑣 +ℎ 𝑢)) = ((𝑥 ·ℎ 𝑣) +ℎ (𝑥 ·ℎ 𝑢)))
66	65	adantrrr 717	. . . . . . . . . . . . 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 2831	. . . . . . . . . . . 12 ⊢ ((𝑥 ∈ ℂ ∧ (𝑣 ∈ 𝐴 ∧ (𝑢 ∈ 𝐵 ∧ 𝑦 = (𝑣 +ℎ 𝑢)))) → (𝑥 ·ℎ 𝑦) = ((𝑥 ·ℎ 𝑣) +ℎ (𝑥 ·ℎ 𝑢)))
68		rspceov 6922	. . . . . . . . . . . 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 1491	. . . . . . . . . . 11 ⊢ ((𝑥 ∈ ℂ ∧ (𝑣 ∈ 𝐴 ∧ (𝑢 ∈ 𝐵 ∧ 𝑦 = (𝑣 +ℎ 𝑢)))) → ∃𝑓 ∈ 𝐴 ∃𝑔 ∈ 𝐵 (𝑥 ·ℎ 𝑦) = (𝑓 +ℎ 𝑔))
70	69	ancoms 451	. . . . . . . . . 10 ⊢ (((𝑣 ∈ 𝐴 ∧ (𝑢 ∈ 𝐵 ∧ 𝑦 = (𝑣 +ℎ 𝑢))) ∧ 𝑥 ∈ ℂ) → ∃𝑓 ∈ 𝐴 ∃𝑔 ∈ 𝐵 (𝑥 ·ℎ 𝑦) = (𝑓 +ℎ 𝑔))
71	70	exp42 427	. . . . . . . . 9 ⊢ (𝑣 ∈ 𝐴 → (𝑢 ∈ 𝐵 → (𝑦 = (𝑣 +ℎ 𝑢) → (𝑥 ∈ ℂ → ∃𝑓 ∈ 𝐴 ∃𝑔 ∈ 𝐵 (𝑥 ·ℎ 𝑦) = (𝑓 +ℎ 𝑔)))))
72	71	imp 396	. . . . . . . 8 ⊢ ((𝑣 ∈ 𝐴 ∧ 𝑢 ∈ 𝐵) → (𝑦 = (𝑣 +ℎ 𝑢) → (𝑥 ∈ ℂ → ∃𝑓 ∈ 𝐴 ∃𝑔 ∈ 𝐵 (𝑥 ·ℎ 𝑦) = (𝑓 +ℎ 𝑔))))
73	72	rexlimivv 3215	. . . . . . 7 ⊢ (∃𝑣 ∈ 𝐴 ∃𝑢 ∈ 𝐵 𝑦 = (𝑣 +ℎ 𝑢) → (𝑥 ∈ ℂ → ∃𝑓 ∈ 𝐴 ∃𝑔 ∈ 𝐵 (𝑥 ·ℎ 𝑦) = (𝑓 +ℎ 𝑔)))
74	73	impcom 397	. . . . . 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 588	. . . . 5 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ (𝐴 +ℋ 𝐵)) → ∃𝑓 ∈ 𝐴 ∃𝑔 ∈ 𝐵 (𝑥 ·ℎ 𝑦) = (𝑓 +ℎ 𝑔))
76	1, 2	shseli 28692	. . . . 5 ⊢ ((𝑥 ·ℎ 𝑦) ∈ (𝐴 +ℋ 𝐵) ↔ ∃𝑓 ∈ 𝐴 ∃𝑔 ∈ 𝐵 (𝑥 ·ℎ 𝑦) = (𝑓 +ℎ 𝑔))
77	75, 76	sylibr 226	. . . 4 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ (𝐴 +ℋ 𝐵)) → (𝑥 ·ℎ 𝑦) ∈ (𝐴 +ℋ 𝐵))
78	77	rgen2 3154	. . 3 ⊢ ∀𝑥 ∈ ℂ ∀𝑦 ∈ (𝐴 +ℋ 𝐵)(𝑥 ·ℎ 𝑦) ∈ (𝐴 +ℋ 𝐵)
79	51, 78	pm3.2i 463	. 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 28583	. 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 703	1 ⊢ (𝐴 +ℋ 𝐵) ∈ Sℋ

Syntax hints:   → wi 4   ∧ wa 385   = wceq 1653   ∈ wcel 2157  ∀wral 3087  ∃wrex 3088   ⊆ wss 3767  (class class class)co 6876  ℂcc 10220   ℋchba 28293   +_ℎ cva 28294   ·_ℎ csm 28295  0_ℎc0v 28298   S_ℋ csh 28302   +_ℋ cph 28305

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1891  ax-4 1905  ax-5 2006  ax-6 2072  ax-7 2107  ax-8 2159  ax-9 2166  ax-10 2185  ax-11 2200  ax-12 2213  ax-13 2354  ax-ext 2775  ax-rep 4962  ax-sep 4973  ax-nul 4981  ax-pow 5033  ax-pr 5095  ax-un 7181  ax-resscn 10279  ax-1cn 10280  ax-icn 10281  ax-addcl 10282  ax-addrcl 10283  ax-mulcl 10284  ax-mulrcl 10285  ax-mulcom 10286  ax-addass 10287  ax-mulass 10288  ax-distr 10289  ax-i2m1 10290  ax-1ne0 10291  ax-1rid 10292  ax-rnegex 10293  ax-rrecex 10294  ax-cnre 10295  ax-pre-lttri 10296  ax-pre-lttrn 10297  ax-pre-ltadd 10298  ax-hilex 28373  ax-hfvadd 28374  ax-hvcom 28375  ax-hvass 28376  ax-hv0cl 28377  ax-hvaddid 28378  ax-hfvmul 28379  ax-hvmulid 28380  ax-hvdistr1 28382  ax-hvdistr2 28383  ax-hvmul0 28384

This theorem depends on definitions:  df-bi 199  df-an 386  df-or 875  df-3or 1109  df-3an 1110  df-tru 1657  df-ex 1876  df-nf 1880  df-sb 2065  df-mo 2590  df-eu 2607  df-clab 2784  df-cleq 2790  df-clel 2793  df-nfc 2928  df-ne 2970  df-nel 3073  df-ral 3092  df-rex 3093  df-reu 3094  df-rab 3096  df-v 3385  df-sbc 3632  df-csb 3727  df-dif 3770  df-un 3772  df-in 3774  df-ss 3781  df-nul 4114  df-if 4276  df-pw 4349  df-sn 4367  df-pr 4369  df-op 4373  df-uni 4627  df-iun 4710  df-br 4842  df-opab 4904  df-mpt 4921  df-id 5218  df-po 5231  df-so 5232  df-xp 5316  df-rel 5317  df-cnv 5318  df-co 5319  df-dm 5320  df-rn 5321  df-res 5322  df-ima 5323  df-iota 6062  df-fun 6101  df-fn 6102  df-f 6103  df-f1 6104  df-fo 6105  df-f1o 6106  df-fv 6107  df-riota 6837  df-ov 6879  df-oprab 6880  df-mpt2 6881  df-er 7980  df-en 8194  df-dom 8195  df-sdom 8196  df-pnf 10363  df-mnf 10364  df-ltxr 10366  df-sub 10556  df-neg 10557  df-grpo 27865  df-ablo 27917  df-hvsub 28345  df-sh 28581  df-shs 28684

This theorem is referenced by:  shscl  28694  shsval2i  28763  shjshsi  28868  spanuni  28920  5oalem1  29030  5oalem3  29032  5oalem5  29034  5oalem6  29035  5oai  29037  3oalem2  29039  3oalem6  29043  mayete3i  29104  sumdmdlem  29794