Theorem islbs 21071

Description: The predicate "𝐵 is a basis for the left module or vector space 𝑊". A subset of the base set is a basis if zero is not in the set, it spans the set, and no nonzero multiple of an element of the basis is in the span of the rest of the family. (Contributed by Mario Carneiro, 24-Jun-2014.) (Revised by Mario Carneiro, 14-Jan-2015.)

Hypotheses

Ref	Expression
islbs.v	⊢ 𝑉 = (Base‘𝑊)
islbs.f	⊢ 𝐹 = (Scalar‘𝑊)
islbs.s	⊢ · = ( ·𝑠 ‘𝑊)
islbs.k	⊢ 𝐾 = (Base‘𝐹)
islbs.j	⊢ 𝐽 = (LBasis‘𝑊)
islbs.n	⊢ 𝑁 = (LSpan‘𝑊)
islbs.z	⊢ 0 = (0g‘𝐹)

Assertion

Ref	Expression
islbs	⊢ (𝑊 ∈ 𝑋 → (𝐵 ∈ 𝐽 ↔ (𝐵 ⊆ 𝑉 ∧ (𝑁‘𝐵) = 𝑉 ∧ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ (𝐾 ∖ { 0 }) ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝐵 ∖ {𝑥})))))

Distinct variable groups:   𝑥,𝑦,𝐵   𝑦,𝐾   𝑥,𝑁,𝑦   𝑥,𝑊,𝑦   𝑥,𝐹,𝑦   𝑦, 0

Allowed substitution hints:   · (𝑥,𝑦)   𝐽(𝑥,𝑦)   𝐾(𝑥)   𝑉(𝑥,𝑦)   𝑋(𝑥,𝑦)   0 (𝑥)

Proof of Theorem islbs

Dummy variables 𝑏 𝑓 𝑛 𝑤 are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		elex 3450	. . . 4 ⊢ (𝑊 ∈ 𝑋 → 𝑊 ∈ V)
2		islbs.j	. . . . 5 ⊢ 𝐽 = (LBasis‘𝑊)
3		fveq2 6840	. . . . . . . . 9 ⊢ (𝑤 = 𝑊 → (Base‘𝑤) = (Base‘𝑊))
4		islbs.v	. . . . . . . . 9 ⊢ 𝑉 = (Base‘𝑊)
5	3, 4	eqtr4di 2789	. . . . . . . 8 ⊢ (𝑤 = 𝑊 → (Base‘𝑤) = 𝑉)
6	5	pweqd 4558	. . . . . . 7 ⊢ (𝑤 = 𝑊 → 𝒫 (Base‘𝑤) = 𝒫 𝑉)
7		fvexd 6855	. . . . . . . 8 ⊢ (𝑤 = 𝑊 → (LSpan‘𝑤) ∈ V)
8		fveq2 6840	. . . . . . . . 9 ⊢ (𝑤 = 𝑊 → (LSpan‘𝑤) = (LSpan‘𝑊))
9		islbs.n	. . . . . . . . 9 ⊢ 𝑁 = (LSpan‘𝑊)
10	8, 9	eqtr4di 2789	. . . . . . . 8 ⊢ (𝑤 = 𝑊 → (LSpan‘𝑤) = 𝑁)
11		fvexd 6855	. . . . . . . . 9 ⊢ ((𝑤 = 𝑊 ∧ 𝑛 = 𝑁) → (Scalar‘𝑤) ∈ V)
12		fveq2 6840	. . . . . . . . . . 11 ⊢ (𝑤 = 𝑊 → (Scalar‘𝑤) = (Scalar‘𝑊))
13	12	adantr 480	. . . . . . . . . 10 ⊢ ((𝑤 = 𝑊 ∧ 𝑛 = 𝑁) → (Scalar‘𝑤) = (Scalar‘𝑊))
14		islbs.f	. . . . . . . . . 10 ⊢ 𝐹 = (Scalar‘𝑊)
15	13, 14	eqtr4di 2789	. . . . . . . . 9 ⊢ ((𝑤 = 𝑊 ∧ 𝑛 = 𝑁) → (Scalar‘𝑤) = 𝐹)
16		simplr 769	. . . . . . . . . . . 12 ⊢ (((𝑤 = 𝑊 ∧ 𝑛 = 𝑁) ∧ 𝑓 = 𝐹) → 𝑛 = 𝑁)
17	16	fveq1d 6842	. . . . . . . . . . 11 ⊢ (((𝑤 = 𝑊 ∧ 𝑛 = 𝑁) ∧ 𝑓 = 𝐹) → (𝑛‘𝑏) = (𝑁‘𝑏))
18	5	ad2antrr 727	. . . . . . . . . . 11 ⊢ (((𝑤 = 𝑊 ∧ 𝑛 = 𝑁) ∧ 𝑓 = 𝐹) → (Base‘𝑤) = 𝑉)
19	17, 18	eqeq12d 2752	. . . . . . . . . 10 ⊢ (((𝑤 = 𝑊 ∧ 𝑛 = 𝑁) ∧ 𝑓 = 𝐹) → ((𝑛‘𝑏) = (Base‘𝑤) ↔ (𝑁‘𝑏) = 𝑉))
20		simpr 484	. . . . . . . . . . . . . . 15 ⊢ (((𝑤 = 𝑊 ∧ 𝑛 = 𝑁) ∧ 𝑓 = 𝐹) → 𝑓 = 𝐹)
21	20	fveq2d 6844	. . . . . . . . . . . . . 14 ⊢ (((𝑤 = 𝑊 ∧ 𝑛 = 𝑁) ∧ 𝑓 = 𝐹) → (Base‘𝑓) = (Base‘𝐹))
22		islbs.k	. . . . . . . . . . . . . 14 ⊢ 𝐾 = (Base‘𝐹)
23	21, 22	eqtr4di 2789	. . . . . . . . . . . . 13 ⊢ (((𝑤 = 𝑊 ∧ 𝑛 = 𝑁) ∧ 𝑓 = 𝐹) → (Base‘𝑓) = 𝐾)
24	20	fveq2d 6844	. . . . . . . . . . . . . . 15 ⊢ (((𝑤 = 𝑊 ∧ 𝑛 = 𝑁) ∧ 𝑓 = 𝐹) → (0g‘𝑓) = (0g‘𝐹))
25		islbs.z	. . . . . . . . . . . . . . 15 ⊢ 0 = (0g‘𝐹)
26	24, 25	eqtr4di 2789	. . . . . . . . . . . . . 14 ⊢ (((𝑤 = 𝑊 ∧ 𝑛 = 𝑁) ∧ 𝑓 = 𝐹) → (0g‘𝑓) = 0 )
27	26	sneqd 4579	. . . . . . . . . . . . 13 ⊢ (((𝑤 = 𝑊 ∧ 𝑛 = 𝑁) ∧ 𝑓 = 𝐹) → {(0g‘𝑓)} = { 0 })
28	23, 27	difeq12d 4067	. . . . . . . . . . . 12 ⊢ (((𝑤 = 𝑊 ∧ 𝑛 = 𝑁) ∧ 𝑓 = 𝐹) → ((Base‘𝑓) ∖ {(0g‘𝑓)}) = (𝐾 ∖ { 0 }))
29		fveq2 6840	. . . . . . . . . . . . . . . . 17 ⊢ (𝑤 = 𝑊 → ( ·𝑠 ‘𝑤) = ( ·𝑠 ‘𝑊))
30		islbs.s	. . . . . . . . . . . . . . . . 17 ⊢ · = ( ·𝑠 ‘𝑊)
31	29, 30	eqtr4di 2789	. . . . . . . . . . . . . . . 16 ⊢ (𝑤 = 𝑊 → ( ·𝑠 ‘𝑤) = · )
32	31	ad2antrr 727	. . . . . . . . . . . . . . 15 ⊢ (((𝑤 = 𝑊 ∧ 𝑛 = 𝑁) ∧ 𝑓 = 𝐹) → ( ·𝑠 ‘𝑤) = · )
33	32	oveqd 7384	. . . . . . . . . . . . . 14 ⊢ (((𝑤 = 𝑊 ∧ 𝑛 = 𝑁) ∧ 𝑓 = 𝐹) → (𝑦( ·𝑠 ‘𝑤)𝑥) = (𝑦 · 𝑥))
34	16	fveq1d 6842	. . . . . . . . . . . . . 14 ⊢ (((𝑤 = 𝑊 ∧ 𝑛 = 𝑁) ∧ 𝑓 = 𝐹) → (𝑛‘(𝑏 ∖ {𝑥})) = (𝑁‘(𝑏 ∖ {𝑥})))
35	33, 34	eleq12d 2830	. . . . . . . . . . . . 13 ⊢ (((𝑤 = 𝑊 ∧ 𝑛 = 𝑁) ∧ 𝑓 = 𝐹) → ((𝑦( ·𝑠 ‘𝑤)𝑥) ∈ (𝑛‘(𝑏 ∖ {𝑥})) ↔ (𝑦 · 𝑥) ∈ (𝑁‘(𝑏 ∖ {𝑥}))))
36	35	notbid 318	. . . . . . . . . . . 12 ⊢ (((𝑤 = 𝑊 ∧ 𝑛 = 𝑁) ∧ 𝑓 = 𝐹) → (¬ (𝑦( ·𝑠 ‘𝑤)𝑥) ∈ (𝑛‘(𝑏 ∖ {𝑥})) ↔ ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝑏 ∖ {𝑥}))))
37	28, 36	raleqbidv 3311	. . . . . . . . . . 11 ⊢ (((𝑤 = 𝑊 ∧ 𝑛 = 𝑁) ∧ 𝑓 = 𝐹) → (∀𝑦 ∈ ((Base‘𝑓) ∖ {(0g‘𝑓)}) ¬ (𝑦( ·𝑠 ‘𝑤)𝑥) ∈ (𝑛‘(𝑏 ∖ {𝑥})) ↔ ∀𝑦 ∈ (𝐾 ∖ { 0 }) ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝑏 ∖ {𝑥}))))
38	37	ralbidv 3160	. . . . . . . . . 10 ⊢ (((𝑤 = 𝑊 ∧ 𝑛 = 𝑁) ∧ 𝑓 = 𝐹) → (∀𝑥 ∈ 𝑏 ∀𝑦 ∈ ((Base‘𝑓) ∖ {(0g‘𝑓)}) ¬ (𝑦( ·𝑠 ‘𝑤)𝑥) ∈ (𝑛‘(𝑏 ∖ {𝑥})) ↔ ∀𝑥 ∈ 𝑏 ∀𝑦 ∈ (𝐾 ∖ { 0 }) ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝑏 ∖ {𝑥}))))
39	19, 38	anbi12d 633	. . . . . . . . 9 ⊢ (((𝑤 = 𝑊 ∧ 𝑛 = 𝑁) ∧ 𝑓 = 𝐹) → (((𝑛‘𝑏) = (Base‘𝑤) ∧ ∀𝑥 ∈ 𝑏 ∀𝑦 ∈ ((Base‘𝑓) ∖ {(0g‘𝑓)}) ¬ (𝑦( ·𝑠 ‘𝑤)𝑥) ∈ (𝑛‘(𝑏 ∖ {𝑥}))) ↔ ((𝑁‘𝑏) = 𝑉 ∧ ∀𝑥 ∈ 𝑏 ∀𝑦 ∈ (𝐾 ∖ { 0 }) ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝑏 ∖ {𝑥})))))
40	11, 15, 39	sbcied2 3773	. . . . . . . 8 ⊢ ((𝑤 = 𝑊 ∧ 𝑛 = 𝑁) → ([(Scalar‘𝑤) / 𝑓]((𝑛‘𝑏) = (Base‘𝑤) ∧ ∀𝑥 ∈ 𝑏 ∀𝑦 ∈ ((Base‘𝑓) ∖ {(0g‘𝑓)}) ¬ (𝑦( ·𝑠 ‘𝑤)𝑥) ∈ (𝑛‘(𝑏 ∖ {𝑥}))) ↔ ((𝑁‘𝑏) = 𝑉 ∧ ∀𝑥 ∈ 𝑏 ∀𝑦 ∈ (𝐾 ∖ { 0 }) ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝑏 ∖ {𝑥})))))
41	7, 10, 40	sbcied2 3773	. . . . . . 7 ⊢ (𝑤 = 𝑊 → ([(LSpan‘𝑤) / 𝑛][(Scalar‘𝑤) / 𝑓]((𝑛‘𝑏) = (Base‘𝑤) ∧ ∀𝑥 ∈ 𝑏 ∀𝑦 ∈ ((Base‘𝑓) ∖ {(0g‘𝑓)}) ¬ (𝑦( ·𝑠 ‘𝑤)𝑥) ∈ (𝑛‘(𝑏 ∖ {𝑥}))) ↔ ((𝑁‘𝑏) = 𝑉 ∧ ∀𝑥 ∈ 𝑏 ∀𝑦 ∈ (𝐾 ∖ { 0 }) ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝑏 ∖ {𝑥})))))
42	6, 41	rabeqbidv 3407	. . . . . 6 ⊢ (𝑤 = 𝑊 → {𝑏 ∈ 𝒫 (Base‘𝑤) ∣ [(LSpan‘𝑤) / 𝑛][(Scalar‘𝑤) / 𝑓]((𝑛‘𝑏) = (Base‘𝑤) ∧ ∀𝑥 ∈ 𝑏 ∀𝑦 ∈ ((Base‘𝑓) ∖ {(0g‘𝑓)}) ¬ (𝑦( ·𝑠 ‘𝑤)𝑥) ∈ (𝑛‘(𝑏 ∖ {𝑥})))} = {𝑏 ∈ 𝒫 𝑉 ∣ ((𝑁‘𝑏) = 𝑉 ∧ ∀𝑥 ∈ 𝑏 ∀𝑦 ∈ (𝐾 ∖ { 0 }) ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝑏 ∖ {𝑥})))})
43		df-lbs 21070	. . . . . 6 ⊢ LBasis = (𝑤 ∈ V ↦ {𝑏 ∈ 𝒫 (Base‘𝑤) ∣ [(LSpan‘𝑤) / 𝑛][(Scalar‘𝑤) / 𝑓]((𝑛‘𝑏) = (Base‘𝑤) ∧ ∀𝑥 ∈ 𝑏 ∀𝑦 ∈ ((Base‘𝑓) ∖ {(0g‘𝑓)}) ¬ (𝑦( ·𝑠 ‘𝑤)𝑥) ∈ (𝑛‘(𝑏 ∖ {𝑥})))})
44	4	fvexi 6854	. . . . . . . 8 ⊢ 𝑉 ∈ V
45	44	pwex 5322	. . . . . . 7 ⊢ 𝒫 𝑉 ∈ V
46	45	rabex 5280	. . . . . 6 ⊢ {𝑏 ∈ 𝒫 𝑉 ∣ ((𝑁‘𝑏) = 𝑉 ∧ ∀𝑥 ∈ 𝑏 ∀𝑦 ∈ (𝐾 ∖ { 0 }) ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝑏 ∖ {𝑥})))} ∈ V
47	42, 43, 46	fvmpt 6947	. . . . 5 ⊢ (𝑊 ∈ V → (LBasis‘𝑊) = {𝑏 ∈ 𝒫 𝑉 ∣ ((𝑁‘𝑏) = 𝑉 ∧ ∀𝑥 ∈ 𝑏 ∀𝑦 ∈ (𝐾 ∖ { 0 }) ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝑏 ∖ {𝑥})))})
48	2, 47	eqtrid 2783	. . . 4 ⊢ (𝑊 ∈ V → 𝐽 = {𝑏 ∈ 𝒫 𝑉 ∣ ((𝑁‘𝑏) = 𝑉 ∧ ∀𝑥 ∈ 𝑏 ∀𝑦 ∈ (𝐾 ∖ { 0 }) ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝑏 ∖ {𝑥})))})
49	1, 48	syl 17	. . 3 ⊢ (𝑊 ∈ 𝑋 → 𝐽 = {𝑏 ∈ 𝒫 𝑉 ∣ ((𝑁‘𝑏) = 𝑉 ∧ ∀𝑥 ∈ 𝑏 ∀𝑦 ∈ (𝐾 ∖ { 0 }) ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝑏 ∖ {𝑥})))})
50	49	eleq2d 2822	. 2 ⊢ (𝑊 ∈ 𝑋 → (𝐵 ∈ 𝐽 ↔ 𝐵 ∈ {𝑏 ∈ 𝒫 𝑉 ∣ ((𝑁‘𝑏) = 𝑉 ∧ ∀𝑥 ∈ 𝑏 ∀𝑦 ∈ (𝐾 ∖ { 0 }) ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝑏 ∖ {𝑥})))}))
51	44	elpw2 5275	. . . 4 ⊢ (𝐵 ∈ 𝒫 𝑉 ↔ 𝐵 ⊆ 𝑉)
52	51	anbi1i 625	. . 3 ⊢ ((𝐵 ∈ 𝒫 𝑉 ∧ ((𝑁‘𝐵) = 𝑉 ∧ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ (𝐾 ∖ { 0 }) ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝐵 ∖ {𝑥})))) ↔ (𝐵 ⊆ 𝑉 ∧ ((𝑁‘𝐵) = 𝑉 ∧ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ (𝐾 ∖ { 0 }) ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝐵 ∖ {𝑥})))))
53		fveqeq2 6849	. . . . 5 ⊢ (𝑏 = 𝐵 → ((𝑁‘𝑏) = 𝑉 ↔ (𝑁‘𝐵) = 𝑉))
54		difeq1 4059	. . . . . . . . . 10 ⊢ (𝑏 = 𝐵 → (𝑏 ∖ {𝑥}) = (𝐵 ∖ {𝑥}))
55	54	fveq2d 6844	. . . . . . . . 9 ⊢ (𝑏 = 𝐵 → (𝑁‘(𝑏 ∖ {𝑥})) = (𝑁‘(𝐵 ∖ {𝑥})))
56	55	eleq2d 2822	. . . . . . . 8 ⊢ (𝑏 = 𝐵 → ((𝑦 · 𝑥) ∈ (𝑁‘(𝑏 ∖ {𝑥})) ↔ (𝑦 · 𝑥) ∈ (𝑁‘(𝐵 ∖ {𝑥}))))
57	56	notbid 318	. . . . . . 7 ⊢ (𝑏 = 𝐵 → (¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝑏 ∖ {𝑥})) ↔ ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝐵 ∖ {𝑥}))))
58	57	ralbidv 3160	. . . . . 6 ⊢ (𝑏 = 𝐵 → (∀𝑦 ∈ (𝐾 ∖ { 0 }) ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝑏 ∖ {𝑥})) ↔ ∀𝑦 ∈ (𝐾 ∖ { 0 }) ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝐵 ∖ {𝑥}))))
59	58	raleqbi1dv 3305	. . . . 5 ⊢ (𝑏 = 𝐵 → (∀𝑥 ∈ 𝑏 ∀𝑦 ∈ (𝐾 ∖ { 0 }) ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝑏 ∖ {𝑥})) ↔ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ (𝐾 ∖ { 0 }) ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝐵 ∖ {𝑥}))))
60	53, 59	anbi12d 633	. . . 4 ⊢ (𝑏 = 𝐵 → (((𝑁‘𝑏) = 𝑉 ∧ ∀𝑥 ∈ 𝑏 ∀𝑦 ∈ (𝐾 ∖ { 0 }) ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝑏 ∖ {𝑥}))) ↔ ((𝑁‘𝐵) = 𝑉 ∧ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ (𝐾 ∖ { 0 }) ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝐵 ∖ {𝑥})))))
61	60	elrab 3634	. . 3 ⊢ (𝐵 ∈ {𝑏 ∈ 𝒫 𝑉 ∣ ((𝑁‘𝑏) = 𝑉 ∧ ∀𝑥 ∈ 𝑏 ∀𝑦 ∈ (𝐾 ∖ { 0 }) ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝑏 ∖ {𝑥})))} ↔ (𝐵 ∈ 𝒫 𝑉 ∧ ((𝑁‘𝐵) = 𝑉 ∧ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ (𝐾 ∖ { 0 }) ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝐵 ∖ {𝑥})))))
62		3anass 1095	. . 3 ⊢ ((𝐵 ⊆ 𝑉 ∧ (𝑁‘𝐵) = 𝑉 ∧ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ (𝐾 ∖ { 0 }) ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝐵 ∖ {𝑥}))) ↔ (𝐵 ⊆ 𝑉 ∧ ((𝑁‘𝐵) = 𝑉 ∧ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ (𝐾 ∖ { 0 }) ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝐵 ∖ {𝑥})))))
63	52, 61, 62	3bitr4i 303	. 2 ⊢ (𝐵 ∈ {𝑏 ∈ 𝒫 𝑉 ∣ ((𝑁‘𝑏) = 𝑉 ∧ ∀𝑥 ∈ 𝑏 ∀𝑦 ∈ (𝐾 ∖ { 0 }) ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝑏 ∖ {𝑥})))} ↔ (𝐵 ⊆ 𝑉 ∧ (𝑁‘𝐵) = 𝑉 ∧ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ (𝐾 ∖ { 0 }) ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝐵 ∖ {𝑥}))))
64	50, 63	bitrdi 287	1 ⊢ (𝑊 ∈ 𝑋 → (𝐵 ∈ 𝐽 ↔ (𝐵 ⊆ 𝑉 ∧ (𝑁‘𝐵) = 𝑉 ∧ ∀𝑥 ∈ 𝐵 ∀𝑦 ∈ (𝐾 ∖ { 0 }) ¬ (𝑦 · 𝑥) ∈ (𝑁‘(𝐵 ∖ {𝑥})))))

Syntax hints:  ¬ wn 3   → wi 4   ↔ wb 206   ∧ wa 395   ∧ w3a 1087   = wceq 1542   ∈ wcel 2114  ∀wral 3051  {crab 3389  Vcvv 3429  [wsbc 3728   ∖ cdif 3886   ⊆ wss 3889  𝒫 cpw 4541  {csn 4567  ‘cfv 6498  (class class class)co 7367  Basecbs 17179  Scalarcsca 17223   ·_𝑠 cvsca 17224  0_gc0g 17402  LSpanclspn 20966  LBasisclbs 21069

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 1912  ax-6 1969  ax-7 2010  ax-8 2116  ax-9 2124  ax-10 2147  ax-11 2163  ax-12 2185  ax-ext 2708  ax-sep 5231  ax-nul 5241  ax-pow 5307  ax-pr 5375

This theorem depends on definitions:  df-bi 207  df-an 396  df-or 849  df-3an 1089  df-tru 1545  df-fal 1555  df-ex 1782  df-nf 1786  df-sb 2069  df-mo 2539  df-eu 2569  df-clab 2715  df-cleq 2728  df-clel 2811  df-nfc 2885  df-ne 2933  df-ral 3052  df-rex 3062  df-rab 3390  df-v 3431  df-sbc 3729  df-dif 3892  df-un 3894  df-in 3896  df-ss 3906  df-nul 4274  df-if 4467  df-pw 4543  df-sn 4568  df-pr 4570  df-op 4574  df-uni 4851  df-br 5086  df-opab 5148  df-mpt 5167  df-id 5526  df-xp 5637  df-rel 5638  df-cnv 5639  df-co 5640  df-dm 5641  df-iota 6454  df-fun 6500  df-fv 6506  df-ov 7370  df-lbs 21070

This theorem is referenced by:  lbsss  21072  lbssp  21074  lbsind  21075  lbspropd  21094  islbs2  21152  frlmlbs  21777  islbs4  21812