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Definition df-phl 21617
Description: Define the class of all pre-Hilbert spaces (inner product spaces) over arbitrary fields with involution. (Some textbook definitions are more restrictive and require the field of scalars to be the field of real or complex numbers). (Contributed by NM, 22-Sep-2011.)
Assertion
Ref Expression
df-phl PreHil = {𝑔 ∈ LVec ∣ [(Base‘𝑔) / 𝑣][(·𝑖𝑔) / ][(Scalar‘𝑔) / 𝑓](𝑓 ∈ *-Ring ∧ ∀𝑥𝑣 ((𝑦𝑣 ↦ (𝑦𝑥)) ∈ (𝑔 LMHom (ringLMod‘𝑓)) ∧ ((𝑥𝑥) = (0g𝑓) → 𝑥 = (0g𝑔)) ∧ ∀𝑦𝑣 ((*𝑟𝑓)‘(𝑥𝑦)) = (𝑦𝑥)))}
Distinct variable group:   𝑓,𝑔,,𝑣,𝑥,𝑦

Detailed syntax breakdown of Definition df-phl
StepHypRef Expression
1 cphl 21615 . 2 class PreHil
2 vf . . . . . . . . 9 setvar 𝑓
32cv 1533 . . . . . . . 8 class 𝑓
4 csr 20812 . . . . . . . 8 class *-Ring
53, 4wcel 2099 . . . . . . 7 wff 𝑓 ∈ *-Ring
6 vy . . . . . . . . . . 11 setvar 𝑦
7 vv . . . . . . . . . . . 12 setvar 𝑣
87cv 1533 . . . . . . . . . . 11 class 𝑣
96cv 1533 . . . . . . . . . . . 12 class 𝑦
10 vx . . . . . . . . . . . . 13 setvar 𝑥
1110cv 1533 . . . . . . . . . . . 12 class 𝑥
12 vh . . . . . . . . . . . . 13 setvar
1312cv 1533 . . . . . . . . . . . 12 class
149, 11, 13co 7415 . . . . . . . . . . 11 class (𝑦𝑥)
156, 8, 14cmpt 5228 . . . . . . . . . 10 class (𝑦𝑣 ↦ (𝑦𝑥))
16 vg . . . . . . . . . . . 12 setvar 𝑔
1716cv 1533 . . . . . . . . . . 11 class 𝑔
18 crglmod 21145 . . . . . . . . . . . 12 class ringLMod
193, 18cfv 6545 . . . . . . . . . . 11 class (ringLMod‘𝑓)
20 clmhm 20992 . . . . . . . . . . 11 class LMHom
2117, 19, 20co 7415 . . . . . . . . . 10 class (𝑔 LMHom (ringLMod‘𝑓))
2215, 21wcel 2099 . . . . . . . . 9 wff (𝑦𝑣 ↦ (𝑦𝑥)) ∈ (𝑔 LMHom (ringLMod‘𝑓))
2311, 11, 13co 7415 . . . . . . . . . . 11 class (𝑥𝑥)
24 c0g 17448 . . . . . . . . . . . 12 class 0g
253, 24cfv 6545 . . . . . . . . . . 11 class (0g𝑓)
2623, 25wceq 1534 . . . . . . . . . 10 wff (𝑥𝑥) = (0g𝑓)
2717, 24cfv 6545 . . . . . . . . . . 11 class (0g𝑔)
2811, 27wceq 1534 . . . . . . . . . 10 wff 𝑥 = (0g𝑔)
2926, 28wi 4 . . . . . . . . 9 wff ((𝑥𝑥) = (0g𝑓) → 𝑥 = (0g𝑔))
3011, 9, 13co 7415 . . . . . . . . . . . 12 class (𝑥𝑦)
31 cstv 17262 . . . . . . . . . . . . 13 class *𝑟
323, 31cfv 6545 . . . . . . . . . . . 12 class (*𝑟𝑓)
3330, 32cfv 6545 . . . . . . . . . . 11 class ((*𝑟𝑓)‘(𝑥𝑦))
3433, 14wceq 1534 . . . . . . . . . 10 wff ((*𝑟𝑓)‘(𝑥𝑦)) = (𝑦𝑥)
3534, 6, 8wral 3051 . . . . . . . . 9 wff 𝑦𝑣 ((*𝑟𝑓)‘(𝑥𝑦)) = (𝑦𝑥)
3622, 29, 35w3a 1084 . . . . . . . 8 wff ((𝑦𝑣 ↦ (𝑦𝑥)) ∈ (𝑔 LMHom (ringLMod‘𝑓)) ∧ ((𝑥𝑥) = (0g𝑓) → 𝑥 = (0g𝑔)) ∧ ∀𝑦𝑣 ((*𝑟𝑓)‘(𝑥𝑦)) = (𝑦𝑥))
3736, 10, 8wral 3051 . . . . . . 7 wff 𝑥𝑣 ((𝑦𝑣 ↦ (𝑦𝑥)) ∈ (𝑔 LMHom (ringLMod‘𝑓)) ∧ ((𝑥𝑥) = (0g𝑓) → 𝑥 = (0g𝑔)) ∧ ∀𝑦𝑣 ((*𝑟𝑓)‘(𝑥𝑦)) = (𝑦𝑥))
385, 37wa 394 . . . . . 6 wff (𝑓 ∈ *-Ring ∧ ∀𝑥𝑣 ((𝑦𝑣 ↦ (𝑦𝑥)) ∈ (𝑔 LMHom (ringLMod‘𝑓)) ∧ ((𝑥𝑥) = (0g𝑓) → 𝑥 = (0g𝑔)) ∧ ∀𝑦𝑣 ((*𝑟𝑓)‘(𝑥𝑦)) = (𝑦𝑥)))
39 csca 17263 . . . . . . 7 class Scalar
4017, 39cfv 6545 . . . . . 6 class (Scalar‘𝑔)
4138, 2, 40wsbc 3777 . . . . 5 wff [(Scalar‘𝑔) / 𝑓](𝑓 ∈ *-Ring ∧ ∀𝑥𝑣 ((𝑦𝑣 ↦ (𝑦𝑥)) ∈ (𝑔 LMHom (ringLMod‘𝑓)) ∧ ((𝑥𝑥) = (0g𝑓) → 𝑥 = (0g𝑔)) ∧ ∀𝑦𝑣 ((*𝑟𝑓)‘(𝑥𝑦)) = (𝑦𝑥)))
42 cip 17265 . . . . . 6 class ·𝑖
4317, 42cfv 6545 . . . . 5 class (·𝑖𝑔)
4441, 12, 43wsbc 3777 . . . 4 wff [(·𝑖𝑔) / ][(Scalar‘𝑔) / 𝑓](𝑓 ∈ *-Ring ∧ ∀𝑥𝑣 ((𝑦𝑣 ↦ (𝑦𝑥)) ∈ (𝑔 LMHom (ringLMod‘𝑓)) ∧ ((𝑥𝑥) = (0g𝑓) → 𝑥 = (0g𝑔)) ∧ ∀𝑦𝑣 ((*𝑟𝑓)‘(𝑥𝑦)) = (𝑦𝑥)))
45 cbs 17207 . . . . 5 class Base
4617, 45cfv 6545 . . . 4 class (Base‘𝑔)
4744, 7, 46wsbc 3777 . . 3 wff [(Base‘𝑔) / 𝑣][(·𝑖𝑔) / ][(Scalar‘𝑔) / 𝑓](𝑓 ∈ *-Ring ∧ ∀𝑥𝑣 ((𝑦𝑣 ↦ (𝑦𝑥)) ∈ (𝑔 LMHom (ringLMod‘𝑓)) ∧ ((𝑥𝑥) = (0g𝑓) → 𝑥 = (0g𝑔)) ∧ ∀𝑦𝑣 ((*𝑟𝑓)‘(𝑥𝑦)) = (𝑦𝑥)))
48 clvec 21075 . . 3 class LVec
4947, 16, 48crab 3420 . 2 class {𝑔 ∈ LVec ∣ [(Base‘𝑔) / 𝑣][(·𝑖𝑔) / ][(Scalar‘𝑔) / 𝑓](𝑓 ∈ *-Ring ∧ ∀𝑥𝑣 ((𝑦𝑣 ↦ (𝑦𝑥)) ∈ (𝑔 LMHom (ringLMod‘𝑓)) ∧ ((𝑥𝑥) = (0g𝑓) → 𝑥 = (0g𝑔)) ∧ ∀𝑦𝑣 ((*𝑟𝑓)‘(𝑥𝑦)) = (𝑦𝑥)))}
501, 49wceq 1534 1 wff PreHil = {𝑔 ∈ LVec ∣ [(Base‘𝑔) / 𝑣][(·𝑖𝑔) / ][(Scalar‘𝑔) / 𝑓](𝑓 ∈ *-Ring ∧ ∀𝑥𝑣 ((𝑦𝑣 ↦ (𝑦𝑥)) ∈ (𝑔 LMHom (ringLMod‘𝑓)) ∧ ((𝑥𝑥) = (0g𝑓) → 𝑥 = (0g𝑔)) ∧ ∀𝑦𝑣 ((*𝑟𝑓)‘(𝑥𝑦)) = (𝑦𝑥)))}
Colors of variables: wff setvar class
This definition is referenced by:  isphl  21619
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