Theorem ocval 31351

Description: Value of orthogonal complement of a subset of Hilbert space. (Contributed by NM, 7-Aug-2000.) (Revised by Mario Carneiro, 23-Dec-2013.) (New usage is discouraged.)

Assertion

Ref	Expression
ocval	⊢ (𝐻 ⊆ ℋ → (⊥‘𝐻) = {𝑥 ∈ ℋ ∣ ∀𝑦 ∈ 𝐻 (𝑥 ·ih 𝑦) = 0})

Distinct variable group:   𝑥,𝑦,𝐻

Proof of Theorem ocval

Dummy variable 𝑧 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		ax-hilex 31070	. . 3 ⊢ ℋ ∈ V
2	1	elpw2 5275	. 2 ⊢ (𝐻 ∈ 𝒫 ℋ ↔ 𝐻 ⊆ ℋ)
3		raleq 3292	. . . 4 ⊢ (𝑧 = 𝐻 → (∀𝑦 ∈ 𝑧 (𝑥 ·ih 𝑦) = 0 ↔ ∀𝑦 ∈ 𝐻 (𝑥 ·ih 𝑦) = 0))
4	3	rabbidv 3396	. . 3 ⊢ (𝑧 = 𝐻 → {𝑥 ∈ ℋ ∣ ∀𝑦 ∈ 𝑧 (𝑥 ·ih 𝑦) = 0} = {𝑥 ∈ ℋ ∣ ∀𝑦 ∈ 𝐻 (𝑥 ·ih 𝑦) = 0})
5		df-oc 31323	. . 3 ⊢ ⊥ = (𝑧 ∈ 𝒫 ℋ ↦ {𝑥 ∈ ℋ ∣ ∀𝑦 ∈ 𝑧 (𝑥 ·ih 𝑦) = 0})
6	1	rabex 5280	. . 3 ⊢ {𝑥 ∈ ℋ ∣ ∀𝑦 ∈ 𝐻 (𝑥 ·ih 𝑦) = 0} ∈ V
7	4, 5, 6	fvmpt 6947	. 2 ⊢ (𝐻 ∈ 𝒫 ℋ → (⊥‘𝐻) = {𝑥 ∈ ℋ ∣ ∀𝑦 ∈ 𝐻 (𝑥 ·ih 𝑦) = 0})
8	2, 7	sylbir 235	1 ⊢ (𝐻 ⊆ ℋ → (⊥‘𝐻) = {𝑥 ∈ ℋ ∣ ∀𝑦 ∈ 𝐻 (𝑥 ·ih 𝑦) = 0})

Syntax hints:   → wi 4   = wceq 1542   ∈ wcel 2114  ∀wral 3051  {crab 3389   ⊆ wss 3889  𝒫 cpw 4541  ‘cfv 6498  (class class class)co 7367  0cc0 11038   ℋchba 30990   ·_ih csp 30993  ⊥cort 31001

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-pr 5375  ax-hilex 31070

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-ral 3052  df-rex 3062  df-rab 3390  df-v 3431  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-oc 31323

This theorem is referenced by:  ocel  31352  ocsh  31354  occon  31358  chocvali  31370