Theorem ocsh 31185

Description: The orthogonal complement of a subspace is a subspace. Part of Remark 3.12 of [Beran] p. 107. (Contributed by NM, 7-Aug-2000.) (New usage is discouraged.)

Assertion

Ref	Expression
ocsh	⊢ (𝐴 ⊆ ℋ → (⊥‘𝐴) ∈ Sℋ )

Proof of Theorem ocsh

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

Step	Hyp	Ref	Expression
1		ocval 31182	. . . 4 ⊢ (𝐴 ⊆ ℋ → (⊥‘𝐴) = {𝑥 ∈ ℋ ∣ ∀𝑦 ∈ 𝐴 (𝑥 ·ih 𝑦) = 0})
2		ssrab2 4039	. . . 4 ⊢ {𝑥 ∈ ℋ ∣ ∀𝑦 ∈ 𝐴 (𝑥 ·ih 𝑦) = 0} ⊆ ℋ
3	1, 2	eqsstrdi 3988	. . 3 ⊢ (𝐴 ⊆ ℋ → (⊥‘𝐴) ⊆ ℋ)
4		ssel 3937	. . . . . . 7 ⊢ (𝐴 ⊆ ℋ → (𝑦 ∈ 𝐴 → 𝑦 ∈ ℋ))
5		hi01 30998	. . . . . . 7 ⊢ (𝑦 ∈ ℋ → (0ℎ ·ih 𝑦) = 0)
6	4, 5	syl6 35	. . . . . 6 ⊢ (𝐴 ⊆ ℋ → (𝑦 ∈ 𝐴 → (0ℎ ·ih 𝑦) = 0))
7	6	ralrimiv 3124	. . . . 5 ⊢ (𝐴 ⊆ ℋ → ∀𝑦 ∈ 𝐴 (0ℎ ·ih 𝑦) = 0)
8		ax-hv0cl 30905	. . . . 5 ⊢ 0ℎ ∈ ℋ
9	7, 8	jctil 519	. . . 4 ⊢ (𝐴 ⊆ ℋ → (0ℎ ∈ ℋ ∧ ∀𝑦 ∈ 𝐴 (0ℎ ·ih 𝑦) = 0))
10		ocel 31183	. . . 4 ⊢ (𝐴 ⊆ ℋ → (0ℎ ∈ (⊥‘𝐴) ↔ (0ℎ ∈ ℋ ∧ ∀𝑦 ∈ 𝐴 (0ℎ ·ih 𝑦) = 0)))
11	9, 10	mpbird 257	. . 3 ⊢ (𝐴 ⊆ ℋ → 0ℎ ∈ (⊥‘𝐴))
12	3, 11	jca 511	. 2 ⊢ (𝐴 ⊆ ℋ → ((⊥‘𝐴) ⊆ ℋ ∧ 0ℎ ∈ (⊥‘𝐴)))
13		ssel2 3938	. . . . . . . . . 10 ⊢ ((𝐴 ⊆ ℋ ∧ 𝑧 ∈ 𝐴) → 𝑧 ∈ ℋ)
14		ax-his2 30985	. . . . . . . . . . . . . 14 ⊢ ((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℋ ∧ 𝑧 ∈ ℋ) → ((𝑥 +ℎ 𝑦) ·ih 𝑧) = ((𝑥 ·ih 𝑧) + (𝑦 ·ih 𝑧)))
15	14	3expa 1118	. . . . . . . . . . . . 13 ⊢ (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℋ) ∧ 𝑧 ∈ ℋ) → ((𝑥 +ℎ 𝑦) ·ih 𝑧) = ((𝑥 ·ih 𝑧) + (𝑦 ·ih 𝑧)))
16		oveq12 7378	. . . . . . . . . . . . . 14 ⊢ (((𝑥 ·ih 𝑧) = 0 ∧ (𝑦 ·ih 𝑧) = 0) → ((𝑥 ·ih 𝑧) + (𝑦 ·ih 𝑧)) = (0 + 0))
17		00id 11325	. . . . . . . . . . . . . 14 ⊢ (0 + 0) = 0
18	16, 17	eqtrdi 2780	. . . . . . . . . . . . 13 ⊢ (((𝑥 ·ih 𝑧) = 0 ∧ (𝑦 ·ih 𝑧) = 0) → ((𝑥 ·ih 𝑧) + (𝑦 ·ih 𝑧)) = 0)
19	15, 18	sylan9eq 2784	. . . . . . . . . . . 12 ⊢ ((((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℋ) ∧ 𝑧 ∈ ℋ) ∧ ((𝑥 ·ih 𝑧) = 0 ∧ (𝑦 ·ih 𝑧) = 0)) → ((𝑥 +ℎ 𝑦) ·ih 𝑧) = 0)
20	19	ex 412	. . . . . . . . . . 11 ⊢ (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℋ) ∧ 𝑧 ∈ ℋ) → (((𝑥 ·ih 𝑧) = 0 ∧ (𝑦 ·ih 𝑧) = 0) → ((𝑥 +ℎ 𝑦) ·ih 𝑧) = 0))
21	20	ancoms 458	. . . . . . . . . 10 ⊢ ((𝑧 ∈ ℋ ∧ (𝑥 ∈ ℋ ∧ 𝑦 ∈ ℋ)) → (((𝑥 ·ih 𝑧) = 0 ∧ (𝑦 ·ih 𝑧) = 0) → ((𝑥 +ℎ 𝑦) ·ih 𝑧) = 0))
22	13, 21	sylan 580	. . . . . . . . 9 ⊢ (((𝐴 ⊆ ℋ ∧ 𝑧 ∈ 𝐴) ∧ (𝑥 ∈ ℋ ∧ 𝑦 ∈ ℋ)) → (((𝑥 ·ih 𝑧) = 0 ∧ (𝑦 ·ih 𝑧) = 0) → ((𝑥 +ℎ 𝑦) ·ih 𝑧) = 0))
23	22	an32s 652	. . . . . . . 8 ⊢ (((𝐴 ⊆ ℋ ∧ (𝑥 ∈ ℋ ∧ 𝑦 ∈ ℋ)) ∧ 𝑧 ∈ 𝐴) → (((𝑥 ·ih 𝑧) = 0 ∧ (𝑦 ·ih 𝑧) = 0) → ((𝑥 +ℎ 𝑦) ·ih 𝑧) = 0))
24	23	ralimdva 3145	. . . . . . 7 ⊢ ((𝐴 ⊆ ℋ ∧ (𝑥 ∈ ℋ ∧ 𝑦 ∈ ℋ)) → (∀𝑧 ∈ 𝐴 ((𝑥 ·ih 𝑧) = 0 ∧ (𝑦 ·ih 𝑧) = 0) → ∀𝑧 ∈ 𝐴 ((𝑥 +ℎ 𝑦) ·ih 𝑧) = 0))
25	24	imdistanda 571	. . . . . 6 ⊢ (𝐴 ⊆ ℋ → (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℋ) ∧ ∀𝑧 ∈ 𝐴 ((𝑥 ·ih 𝑧) = 0 ∧ (𝑦 ·ih 𝑧) = 0)) → ((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℋ) ∧ ∀𝑧 ∈ 𝐴 ((𝑥 +ℎ 𝑦) ·ih 𝑧) = 0)))
26		hvaddcl 30914	. . . . . . 7 ⊢ ((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℋ) → (𝑥 +ℎ 𝑦) ∈ ℋ)
27	26	anim1i 615	. . . . . 6 ⊢ (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℋ) ∧ ∀𝑧 ∈ 𝐴 ((𝑥 +ℎ 𝑦) ·ih 𝑧) = 0) → ((𝑥 +ℎ 𝑦) ∈ ℋ ∧ ∀𝑧 ∈ 𝐴 ((𝑥 +ℎ 𝑦) ·ih 𝑧) = 0))
28	25, 27	syl6 35	. . . . 5 ⊢ (𝐴 ⊆ ℋ → (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℋ) ∧ ∀𝑧 ∈ 𝐴 ((𝑥 ·ih 𝑧) = 0 ∧ (𝑦 ·ih 𝑧) = 0)) → ((𝑥 +ℎ 𝑦) ∈ ℋ ∧ ∀𝑧 ∈ 𝐴 ((𝑥 +ℎ 𝑦) ·ih 𝑧) = 0)))
29		ocel 31183	. . . . . . 7 ⊢ (𝐴 ⊆ ℋ → (𝑥 ∈ (⊥‘𝐴) ↔ (𝑥 ∈ ℋ ∧ ∀𝑧 ∈ 𝐴 (𝑥 ·ih 𝑧) = 0)))
30		ocel 31183	. . . . . . 7 ⊢ (𝐴 ⊆ ℋ → (𝑦 ∈ (⊥‘𝐴) ↔ (𝑦 ∈ ℋ ∧ ∀𝑧 ∈ 𝐴 (𝑦 ·ih 𝑧) = 0)))
31	29, 30	anbi12d 632	. . . . . 6 ⊢ (𝐴 ⊆ ℋ → ((𝑥 ∈ (⊥‘𝐴) ∧ 𝑦 ∈ (⊥‘𝐴)) ↔ ((𝑥 ∈ ℋ ∧ ∀𝑧 ∈ 𝐴 (𝑥 ·ih 𝑧) = 0) ∧ (𝑦 ∈ ℋ ∧ ∀𝑧 ∈ 𝐴 (𝑦 ·ih 𝑧) = 0))))
32		an4 656	. . . . . . 7 ⊢ (((𝑥 ∈ ℋ ∧ ∀𝑧 ∈ 𝐴 (𝑥 ·ih 𝑧) = 0) ∧ (𝑦 ∈ ℋ ∧ ∀𝑧 ∈ 𝐴 (𝑦 ·ih 𝑧) = 0)) ↔ ((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℋ) ∧ (∀𝑧 ∈ 𝐴 (𝑥 ·ih 𝑧) = 0 ∧ ∀𝑧 ∈ 𝐴 (𝑦 ·ih 𝑧) = 0)))
33		r19.26 3091	. . . . . . . 8 ⊢ (∀𝑧 ∈ 𝐴 ((𝑥 ·ih 𝑧) = 0 ∧ (𝑦 ·ih 𝑧) = 0) ↔ (∀𝑧 ∈ 𝐴 (𝑥 ·ih 𝑧) = 0 ∧ ∀𝑧 ∈ 𝐴 (𝑦 ·ih 𝑧) = 0))
34	33	anbi2i 623	. . . . . . 7 ⊢ (((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℋ) ∧ ∀𝑧 ∈ 𝐴 ((𝑥 ·ih 𝑧) = 0 ∧ (𝑦 ·ih 𝑧) = 0)) ↔ ((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℋ) ∧ (∀𝑧 ∈ 𝐴 (𝑥 ·ih 𝑧) = 0 ∧ ∀𝑧 ∈ 𝐴 (𝑦 ·ih 𝑧) = 0)))
35	32, 34	bitr4i 278	. . . . . 6 ⊢ (((𝑥 ∈ ℋ ∧ ∀𝑧 ∈ 𝐴 (𝑥 ·ih 𝑧) = 0) ∧ (𝑦 ∈ ℋ ∧ ∀𝑧 ∈ 𝐴 (𝑦 ·ih 𝑧) = 0)) ↔ ((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℋ) ∧ ∀𝑧 ∈ 𝐴 ((𝑥 ·ih 𝑧) = 0 ∧ (𝑦 ·ih 𝑧) = 0)))
36	31, 35	bitrdi 287	. . . . 5 ⊢ (𝐴 ⊆ ℋ → ((𝑥 ∈ (⊥‘𝐴) ∧ 𝑦 ∈ (⊥‘𝐴)) ↔ ((𝑥 ∈ ℋ ∧ 𝑦 ∈ ℋ) ∧ ∀𝑧 ∈ 𝐴 ((𝑥 ·ih 𝑧) = 0 ∧ (𝑦 ·ih 𝑧) = 0))))
37		ocel 31183	. . . . 5 ⊢ (𝐴 ⊆ ℋ → ((𝑥 +ℎ 𝑦) ∈ (⊥‘𝐴) ↔ ((𝑥 +ℎ 𝑦) ∈ ℋ ∧ ∀𝑧 ∈ 𝐴 ((𝑥 +ℎ 𝑦) ·ih 𝑧) = 0)))
38	28, 36, 37	3imtr4d 294	. . . 4 ⊢ (𝐴 ⊆ ℋ → ((𝑥 ∈ (⊥‘𝐴) ∧ 𝑦 ∈ (⊥‘𝐴)) → (𝑥 +ℎ 𝑦) ∈ (⊥‘𝐴)))
39	38	ralrimivv 3176	. . 3 ⊢ (𝐴 ⊆ ℋ → ∀𝑥 ∈ (⊥‘𝐴)∀𝑦 ∈ (⊥‘𝐴)(𝑥 +ℎ 𝑦) ∈ (⊥‘𝐴))
40		mul01 11329	. . . . . . . . . . . . 13 ⊢ (𝑥 ∈ ℂ → (𝑥 · 0) = 0)
41		oveq2 7377	. . . . . . . . . . . . . 14 ⊢ ((𝑦 ·ih 𝑧) = 0 → (𝑥 · (𝑦 ·ih 𝑧)) = (𝑥 · 0))
42	41	eqeq1d 2731	. . . . . . . . . . . . 13 ⊢ ((𝑦 ·ih 𝑧) = 0 → ((𝑥 · (𝑦 ·ih 𝑧)) = 0 ↔ (𝑥 · 0) = 0))
43	40, 42	syl5ibrcom 247	. . . . . . . . . . . 12 ⊢ (𝑥 ∈ ℂ → ((𝑦 ·ih 𝑧) = 0 → (𝑥 · (𝑦 ·ih 𝑧)) = 0))
44	43	ad2antrl 728	. . . . . . . . . . 11 ⊢ ((𝑧 ∈ ℋ ∧ (𝑥 ∈ ℂ ∧ 𝑦 ∈ ℋ)) → ((𝑦 ·ih 𝑧) = 0 → (𝑥 · (𝑦 ·ih 𝑧)) = 0))
45		ax-his3 30986	. . . . . . . . . . . . . 14 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℋ ∧ 𝑧 ∈ ℋ) → ((𝑥 ·ℎ 𝑦) ·ih 𝑧) = (𝑥 · (𝑦 ·ih 𝑧)))
46	45	eqeq1d 2731	. . . . . . . . . . . . 13 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℋ ∧ 𝑧 ∈ ℋ) → (((𝑥 ·ℎ 𝑦) ·ih 𝑧) = 0 ↔ (𝑥 · (𝑦 ·ih 𝑧)) = 0))
47	46	3expa 1118	. . . . . . . . . . . 12 ⊢ (((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℋ) ∧ 𝑧 ∈ ℋ) → (((𝑥 ·ℎ 𝑦) ·ih 𝑧) = 0 ↔ (𝑥 · (𝑦 ·ih 𝑧)) = 0))
48	47	ancoms 458	. . . . . . . . . . 11 ⊢ ((𝑧 ∈ ℋ ∧ (𝑥 ∈ ℂ ∧ 𝑦 ∈ ℋ)) → (((𝑥 ·ℎ 𝑦) ·ih 𝑧) = 0 ↔ (𝑥 · (𝑦 ·ih 𝑧)) = 0))
49	44, 48	sylibrd 259	. . . . . . . . . 10 ⊢ ((𝑧 ∈ ℋ ∧ (𝑥 ∈ ℂ ∧ 𝑦 ∈ ℋ)) → ((𝑦 ·ih 𝑧) = 0 → ((𝑥 ·ℎ 𝑦) ·ih 𝑧) = 0))
50	13, 49	sylan 580	. . . . . . . . 9 ⊢ (((𝐴 ⊆ ℋ ∧ 𝑧 ∈ 𝐴) ∧ (𝑥 ∈ ℂ ∧ 𝑦 ∈ ℋ)) → ((𝑦 ·ih 𝑧) = 0 → ((𝑥 ·ℎ 𝑦) ·ih 𝑧) = 0))
51	50	an32s 652	. . . . . . . 8 ⊢ (((𝐴 ⊆ ℋ ∧ (𝑥 ∈ ℂ ∧ 𝑦 ∈ ℋ)) ∧ 𝑧 ∈ 𝐴) → ((𝑦 ·ih 𝑧) = 0 → ((𝑥 ·ℎ 𝑦) ·ih 𝑧) = 0))
52	51	ralimdva 3145	. . . . . . 7 ⊢ ((𝐴 ⊆ ℋ ∧ (𝑥 ∈ ℂ ∧ 𝑦 ∈ ℋ)) → (∀𝑧 ∈ 𝐴 (𝑦 ·ih 𝑧) = 0 → ∀𝑧 ∈ 𝐴 ((𝑥 ·ℎ 𝑦) ·ih 𝑧) = 0))
53	52	imdistanda 571	. . . . . 6 ⊢ (𝐴 ⊆ ℋ → (((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℋ) ∧ ∀𝑧 ∈ 𝐴 (𝑦 ·ih 𝑧) = 0) → ((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℋ) ∧ ∀𝑧 ∈ 𝐴 ((𝑥 ·ℎ 𝑦) ·ih 𝑧) = 0)))
54		hvmulcl 30915	. . . . . . 7 ⊢ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℋ) → (𝑥 ·ℎ 𝑦) ∈ ℋ)
55	54	anim1i 615	. . . . . 6 ⊢ (((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℋ) ∧ ∀𝑧 ∈ 𝐴 ((𝑥 ·ℎ 𝑦) ·ih 𝑧) = 0) → ((𝑥 ·ℎ 𝑦) ∈ ℋ ∧ ∀𝑧 ∈ 𝐴 ((𝑥 ·ℎ 𝑦) ·ih 𝑧) = 0))
56	53, 55	syl6 35	. . . . 5 ⊢ (𝐴 ⊆ ℋ → (((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℋ) ∧ ∀𝑧 ∈ 𝐴 (𝑦 ·ih 𝑧) = 0) → ((𝑥 ·ℎ 𝑦) ∈ ℋ ∧ ∀𝑧 ∈ 𝐴 ((𝑥 ·ℎ 𝑦) ·ih 𝑧) = 0)))
57	30	anbi2d 630	. . . . . 6 ⊢ (𝐴 ⊆ ℋ → ((𝑥 ∈ ℂ ∧ 𝑦 ∈ (⊥‘𝐴)) ↔ (𝑥 ∈ ℂ ∧ (𝑦 ∈ ℋ ∧ ∀𝑧 ∈ 𝐴 (𝑦 ·ih 𝑧) = 0))))
58		anass 468	. . . . . 6 ⊢ (((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℋ) ∧ ∀𝑧 ∈ 𝐴 (𝑦 ·ih 𝑧) = 0) ↔ (𝑥 ∈ ℂ ∧ (𝑦 ∈ ℋ ∧ ∀𝑧 ∈ 𝐴 (𝑦 ·ih 𝑧) = 0)))
59	57, 58	bitr4di 289	. . . . 5 ⊢ (𝐴 ⊆ ℋ → ((𝑥 ∈ ℂ ∧ 𝑦 ∈ (⊥‘𝐴)) ↔ ((𝑥 ∈ ℂ ∧ 𝑦 ∈ ℋ) ∧ ∀𝑧 ∈ 𝐴 (𝑦 ·ih 𝑧) = 0)))
60		ocel 31183	. . . . 5 ⊢ (𝐴 ⊆ ℋ → ((𝑥 ·ℎ 𝑦) ∈ (⊥‘𝐴) ↔ ((𝑥 ·ℎ 𝑦) ∈ ℋ ∧ ∀𝑧 ∈ 𝐴 ((𝑥 ·ℎ 𝑦) ·ih 𝑧) = 0)))
61	56, 59, 60	3imtr4d 294	. . . 4 ⊢ (𝐴 ⊆ ℋ → ((𝑥 ∈ ℂ ∧ 𝑦 ∈ (⊥‘𝐴)) → (𝑥 ·ℎ 𝑦) ∈ (⊥‘𝐴)))
62	61	ralrimivv 3176	. . 3 ⊢ (𝐴 ⊆ ℋ → ∀𝑥 ∈ ℂ ∀𝑦 ∈ (⊥‘𝐴)(𝑥 ·ℎ 𝑦) ∈ (⊥‘𝐴))
63	39, 62	jca 511	. 2 ⊢ (𝐴 ⊆ ℋ → (∀𝑥 ∈ (⊥‘𝐴)∀𝑦 ∈ (⊥‘𝐴)(𝑥 +ℎ 𝑦) ∈ (⊥‘𝐴) ∧ ∀𝑥 ∈ ℂ ∀𝑦 ∈ (⊥‘𝐴)(𝑥 ·ℎ 𝑦) ∈ (⊥‘𝐴)))
64		issh2 31111	. 2 ⊢ ((⊥‘𝐴) ∈ Sℋ ↔ (((⊥‘𝐴) ⊆ ℋ ∧ 0ℎ ∈ (⊥‘𝐴)) ∧ (∀𝑥 ∈ (⊥‘𝐴)∀𝑦 ∈ (⊥‘𝐴)(𝑥 +ℎ 𝑦) ∈ (⊥‘𝐴) ∧ ∀𝑥 ∈ ℂ ∀𝑦 ∈ (⊥‘𝐴)(𝑥 ·ℎ 𝑦) ∈ (⊥‘𝐴))))
65	12, 63, 64	sylanbrc 583	1 ⊢ (𝐴 ⊆ ℋ → (⊥‘𝐴) ∈ Sℋ )

Syntax hints:   → wi 4   ↔ wb 206   ∧ wa 395   ∧ w3a 1086   = wceq 1540   ∈ wcel 2109  ∀wral 3044  {crab 3402   ⊆ wss 3911  ‘cfv 6499  (class class class)co 7369  ℂcc 11042  0cc0 11044   + caddc 11047   · cmul 11049   ℋchba 30821   +_ℎ cva 30822   ·_ℎ csm 30823   ·_ih csp 30824  0_ℎc0v 30826   S_ℋ csh 30830  ⊥cort 30832

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 2008  ax-8 2111  ax-9 2119  ax-10 2142  ax-11 2158  ax-12 2178  ax-ext 2701  ax-sep 5246  ax-nul 5256  ax-pow 5315  ax-pr 5382  ax-un 7691  ax-resscn 11101  ax-1cn 11102  ax-icn 11103  ax-addcl 11104  ax-addrcl 11105  ax-mulcl 11106  ax-mulrcl 11107  ax-mulcom 11108  ax-addass 11109  ax-mulass 11110  ax-distr 11111  ax-i2m1 11112  ax-1ne0 11113  ax-1rid 11114  ax-rnegex 11115  ax-rrecex 11116  ax-cnre 11117  ax-pre-lttri 11118  ax-pre-lttrn 11119  ax-pre-ltadd 11120  ax-hilex 30901  ax-hfvadd 30902  ax-hv0cl 30905  ax-hfvmul 30907  ax-hvmul0 30912  ax-hfi 30981  ax-his2 30985  ax-his3 30986

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1543  df-fal 1553  df-ex 1780  df-nf 1784  df-sb 2066  df-mo 2533  df-eu 2562  df-clab 2708  df-cleq 2721  df-clel 2803  df-nfc 2878  df-ne 2926  df-nel 3030  df-ral 3045  df-rex 3054  df-rab 3403  df-v 3446  df-sbc 3751  df-csb 3860  df-dif 3914  df-un 3916  df-in 3918  df-ss 3928  df-nul 4293  df-if 4485  df-pw 4561  df-sn 4586  df-pr 4588  df-op 4592  df-uni 4868  df-iun 4953  df-br 5103  df-opab 5165  df-mpt 5184  df-id 5526  df-po 5539  df-so 5540  df-xp 5637  df-rel 5638  df-cnv 5639  df-co 5640  df-dm 5641  df-rn 5642  df-res 5643  df-ima 5644  df-iota 6452  df-fun 6501  df-fn 6502  df-f 6503  df-f1 6504  df-fo 6505  df-f1o 6506  df-fv 6507  df-ov 7372  df-er 8648  df-en 8896  df-dom 8897  df-sdom 8898  df-pnf 11186  df-mnf 11187  df-ltxr 11189  df-sh 31109  df-oc 31154

This theorem is referenced by:  shocsh  31186  ocss  31187  occl  31206  spanssoc  31251  ssjo  31349  chscllem2  31540