Theorem ocv0 20021

Description: The orthocomplement of the empty set. (Contributed by Mario Carneiro, 23-Oct-2015.)

Hypotheses

Ref	Expression
ocvz.v	⊢ 𝑉 = (Base‘𝑊)
ocvz.o	⊢ ⊥ = (ocv‘𝑊)

Assertion

Ref	Expression
ocv0	⊢ ( ⊥ ‘∅) = 𝑉

Proof of Theorem ocv0

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

Step	Hyp	Ref	Expression
1		0ss 3972	. . 3 ⊢ ∅ ⊆ 𝑉
2		ocvz.v	. . . 4 ⊢ 𝑉 = (Base‘𝑊)
3		eqid 2622	. . . 4 ⊢ (·𝑖‘𝑊) = (·𝑖‘𝑊)
4		eqid 2622	. . . 4 ⊢ (Scalar‘𝑊) = (Scalar‘𝑊)
5		eqid 2622	. . . 4 ⊢ (0g‘(Scalar‘𝑊)) = (0g‘(Scalar‘𝑊))
6		ocvz.o	. . . 4 ⊢ ⊥ = (ocv‘𝑊)
7	2, 3, 4, 5, 6	ocvval 20011	. . 3 ⊢ (∅ ⊆ 𝑉 → ( ⊥ ‘∅) = {𝑥 ∈ 𝑉 ∣ ∀𝑦 ∈ ∅ (𝑥(·𝑖‘𝑊)𝑦) = (0g‘(Scalar‘𝑊))})
8	1, 7	ax-mp 5	. 2 ⊢ ( ⊥ ‘∅) = {𝑥 ∈ 𝑉 ∣ ∀𝑦 ∈ ∅ (𝑥(·𝑖‘𝑊)𝑦) = (0g‘(Scalar‘𝑊))}
9		ral0 4076	. . . 4 ⊢ ∀𝑦 ∈ ∅ (𝑥(·𝑖‘𝑊)𝑦) = (0g‘(Scalar‘𝑊))
10	9	rgenw 2924	. . 3 ⊢ ∀𝑥 ∈ 𝑉 ∀𝑦 ∈ ∅ (𝑥(·𝑖‘𝑊)𝑦) = (0g‘(Scalar‘𝑊))
11		rabid2 3118	. . 3 ⊢ (𝑉 = {𝑥 ∈ 𝑉 ∣ ∀𝑦 ∈ ∅ (𝑥(·𝑖‘𝑊)𝑦) = (0g‘(Scalar‘𝑊))} ↔ ∀𝑥 ∈ 𝑉 ∀𝑦 ∈ ∅ (𝑥(·𝑖‘𝑊)𝑦) = (0g‘(Scalar‘𝑊)))
12	10, 11	mpbir 221	. 2 ⊢ 𝑉 = {𝑥 ∈ 𝑉 ∣ ∀𝑦 ∈ ∅ (𝑥(·𝑖‘𝑊)𝑦) = (0g‘(Scalar‘𝑊))}
13	8, 12	eqtr4i 2647	1 ⊢ ( ⊥ ‘∅) = 𝑉

Syntax hints:   = wceq 1483  ∀wral 2912  {crab 2916   ⊆ wss 3574  ∅c0 3915  ‘cfv 5888  (class class class)co 6650  Basecbs 15857  Scalarcsca 15944  ·_𝑖cip 15946  0_gc0g 16100  ocvcocv 20004

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-8 1992  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602  ax-sep 4781  ax-nul 4789  ax-pow 4843  ax-pr 4906  ax-un 6949

This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-eu 2474  df-mo 2475  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ne 2795  df-ral 2917  df-rex 2918  df-rab 2921  df-v 3202  df-sbc 3436  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-pw 4160  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-br 4654  df-opab 4713  df-mpt 4730  df-id 5024  df-xp 5120  df-rel 5121  df-cnv 5122  df-co 5123  df-dm 5124  df-rn 5125  df-res 5126  df-ima 5127  df-iota 5851  df-fun 5890  df-fn 5891  df-f 5892  df-fv 5896  df-ov 6653  df-ocv 20007

This theorem is referenced by:  ocvz  20022  css1  20034