Sides of affine subspaces #

This file defines notions of two points being on the same or opposite sides of an affine subspace.

Main definitions #

s.WSameSide x y: The points x and y are weakly on the same side of the affine subspace s.
s.SSameSide x y: The points x and y are strictly on the same side of the affine subspace s.
s.WOppSide x y: The points x and y are weakly on opposite sides of the affine subspace s.
s.SOppSide x y: The points x and y are strictly on opposite sides of the affine subspace s.

def AffineSubspace.WSameSide {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] (s : AffineSubspace R P) (x y : P) :

Prop

The points x and y are weakly on the same side of s.

Equations

s.WSameSide x y = ∃ p₁ ∈ s, ∃ p₂ ∈ s, SameRay R (x -ᵥ p₁) (y -ᵥ p₂)

Instances For

source

def AffineSubspace.SSameSide {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] (s : AffineSubspace R P) (x y : P) :

Prop

The points x and y are strictly on the same side of s.

Equations

s.SSameSide x y = (s.WSameSide x y ∧ x ∉ s ∧ y ∉ s)

Instances For

source

def AffineSubspace.WOppSide {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] (s : AffineSubspace R P) (x y : P) :

Prop

The points x and y are weakly on opposite sides of s.

Equations

s.WOppSide x y = ∃ p₁ ∈ s, ∃ p₂ ∈ s, SameRay R (x -ᵥ p₁) (p₂ -ᵥ y)

Instances For

source

def AffineSubspace.SOppSide {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] (s : AffineSubspace R P) (x y : P) :

Prop

The points x and y are strictly on opposite sides of s.

Equations

s.SOppSide x y = (s.WOppSide x y ∧ x ∉ s ∧ y ∉ s)

Instances For

source

theorem AffineSubspace.WSameSide.map {R : Type u_1} {V : Type u_2} {V' : Type u_3} {P : Type u_4} {P' : Type u_5} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] [AddCommGroup V'] [Module R V'] [AddTorsor V' P'] {s : AffineSubspace R P} {x y : P} (h : s.WSameSide x y) (f : P →ᵃ[R] P') :

(AffineSubspace.map f s).WSameSide (f x) (f y)

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theorem Function.Injective.wSameSide_map_iff {R : Type u_1} {V : Type u_2} {V' : Type u_3} {P : Type u_4} {P' : Type u_5} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] [AddCommGroup V'] [Module R V'] [AddTorsor V' P'] {s : AffineSubspace R P} {x y : P} {f : P →ᵃ[R] P'} (hf : Function.Injective ⇑f) :

(AffineSubspace.map f s).WSameSide (f x) (f y) ↔ s.WSameSide x y

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theorem Function.Injective.sSameSide_map_iff {R : Type u_1} {V : Type u_2} {V' : Type u_3} {P : Type u_4} {P' : Type u_5} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] [AddCommGroup V'] [Module R V'] [AddTorsor V' P'] {s : AffineSubspace R P} {x y : P} {f : P →ᵃ[R] P'} (hf : Function.Injective ⇑f) :

(AffineSubspace.map f s).SSameSide (f x) (f y) ↔ s.SSameSide x y

source

@[simp]

theorem AffineEquiv.wSameSide_map_iff {R : Type u_1} {V : Type u_2} {V' : Type u_3} {P : Type u_4} {P' : Type u_5} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] [AddCommGroup V'] [Module R V'] [AddTorsor V' P'] {s : AffineSubspace R P} {x y : P} (f : P ≃ᵃ[R] P') :

(AffineSubspace.map (↑f) s).WSameSide (f x) (f y) ↔ s.WSameSide x y

source

@[simp]

theorem AffineEquiv.sSameSide_map_iff {R : Type u_1} {V : Type u_2} {V' : Type u_3} {P : Type u_4} {P' : Type u_5} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] [AddCommGroup V'] [Module R V'] [AddTorsor V' P'] {s : AffineSubspace R P} {x y : P} (f : P ≃ᵃ[R] P') :

(AffineSubspace.map (↑f) s).SSameSide (f x) (f y) ↔ s.SSameSide x y

source

theorem AffineSubspace.WOppSide.map {R : Type u_1} {V : Type u_2} {V' : Type u_3} {P : Type u_4} {P' : Type u_5} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] [AddCommGroup V'] [Module R V'] [AddTorsor V' P'] {s : AffineSubspace R P} {x y : P} (h : s.WOppSide x y) (f : P →ᵃ[R] P') :

(AffineSubspace.map f s).WOppSide (f x) (f y)

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theorem Function.Injective.wOppSide_map_iff {R : Type u_1} {V : Type u_2} {V' : Type u_3} {P : Type u_4} {P' : Type u_5} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] [AddCommGroup V'] [Module R V'] [AddTorsor V' P'] {s : AffineSubspace R P} {x y : P} {f : P →ᵃ[R] P'} (hf : Function.Injective ⇑f) :

(AffineSubspace.map f s).WOppSide (f x) (f y) ↔ s.WOppSide x y

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theorem Function.Injective.sOppSide_map_iff {R : Type u_1} {V : Type u_2} {V' : Type u_3} {P : Type u_4} {P' : Type u_5} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] [AddCommGroup V'] [Module R V'] [AddTorsor V' P'] {s : AffineSubspace R P} {x y : P} {f : P →ᵃ[R] P'} (hf : Function.Injective ⇑f) :

(AffineSubspace.map f s).SOppSide (f x) (f y) ↔ s.SOppSide x y

source

@[simp]

theorem AffineEquiv.wOppSide_map_iff {R : Type u_1} {V : Type u_2} {V' : Type u_3} {P : Type u_4} {P' : Type u_5} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] [AddCommGroup V'] [Module R V'] [AddTorsor V' P'] {s : AffineSubspace R P} {x y : P} (f : P ≃ᵃ[R] P') :

(AffineSubspace.map (↑f) s).WOppSide (f x) (f y) ↔ s.WOppSide x y

source

@[simp]

theorem AffineEquiv.sOppSide_map_iff {R : Type u_1} {V : Type u_2} {V' : Type u_3} {P : Type u_4} {P' : Type u_5} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] [AddCommGroup V'] [Module R V'] [AddTorsor V' P'] {s : AffineSubspace R P} {x y : P} (f : P ≃ᵃ[R] P') :

(AffineSubspace.map (↑f) s).SOppSide (f x) (f y) ↔ s.SOppSide x y

source

theorem AffineSubspace.WSameSide.nonempty {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} (h : s.WSameSide x y) :

(↑s).Nonempty

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theorem AffineSubspace.SSameSide.nonempty {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} (h : s.SSameSide x y) :

(↑s).Nonempty

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theorem AffineSubspace.WOppSide.nonempty {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} (h : s.WOppSide x y) :

(↑s).Nonempty

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theorem AffineSubspace.SOppSide.nonempty {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} (h : s.SOppSide x y) :

(↑s).Nonempty

source

theorem AffineSubspace.SSameSide.wSameSide {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} (h : s.SSameSide x y) :

s.WSameSide x y

source

theorem AffineSubspace.SSameSide.left_not_mem {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} (h : s.SSameSide x y) :

x ∉ s

source

theorem AffineSubspace.SSameSide.right_not_mem {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} (h : s.SSameSide x y) :

y ∉ s

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theorem AffineSubspace.SOppSide.wOppSide {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} (h : s.SOppSide x y) :

s.WOppSide x y

source

theorem AffineSubspace.SOppSide.left_not_mem {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} (h : s.SOppSide x y) :

x ∉ s

source

theorem AffineSubspace.SOppSide.right_not_mem {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} (h : s.SOppSide x y) :

y ∉ s

source

theorem AffineSubspace.wSameSide_comm {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} :

s.WSameSide x y ↔ s.WSameSide y x

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theorem AffineSubspace.WSameSide.symm {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} :

s.WSameSide x y → s.WSameSide y x

Alias of the forward direction of AffineSubspace.wSameSide_comm.

source

theorem AffineSubspace.sSameSide_comm {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} :

s.SSameSide x y ↔ s.SSameSide y x

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theorem AffineSubspace.SSameSide.symm {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} :

s.SSameSide x y → s.SSameSide y x

Alias of the forward direction of AffineSubspace.sSameSide_comm.

source

theorem AffineSubspace.wOppSide_comm {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} :

s.WOppSide x y ↔ s.WOppSide y x

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theorem AffineSubspace.WOppSide.symm {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} :

s.WOppSide x y → s.WOppSide y x

Alias of the forward direction of AffineSubspace.wOppSide_comm.

source

theorem AffineSubspace.sOppSide_comm {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} :

s.SOppSide x y ↔ s.SOppSide y x

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theorem AffineSubspace.SOppSide.symm {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} :

s.SOppSide x y → s.SOppSide y x

Alias of the forward direction of AffineSubspace.sOppSide_comm.

source

theorem AffineSubspace.not_wSameSide_bot {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] (x y : P) :

¬⊥.WSameSide x y

source

theorem AffineSubspace.not_sSameSide_bot {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] (x y : P) :

¬⊥.SSameSide x y

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theorem AffineSubspace.not_wOppSide_bot {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] (x y : P) :

¬⊥.WOppSide x y

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theorem AffineSubspace.not_sOppSide_bot {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] (x y : P) :

¬⊥.SOppSide x y

source

@[simp]

theorem AffineSubspace.wSameSide_self_iff {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x : P} :

s.WSameSide x x ↔ (↑s).Nonempty

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theorem AffineSubspace.sSameSide_self_iff {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x : P} :

s.SSameSide x x ↔ (↑s).Nonempty ∧ x ∉ s

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theorem AffineSubspace.wSameSide_of_left_mem {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x : P} (y : P) (hx : x ∈ s) :

s.WSameSide x y

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theorem AffineSubspace.wSameSide_of_right_mem {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} (x : P) {y : P} (hy : y ∈ s) :

s.WSameSide x y

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theorem AffineSubspace.wOppSide_of_left_mem {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x : P} (y : P) (hx : x ∈ s) :

s.WOppSide x y

source

theorem AffineSubspace.wOppSide_of_right_mem {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} (x : P) {y : P} (hy : y ∈ s) :

s.WOppSide x y

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theorem AffineSubspace.wSameSide_vadd_left_iff {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} {v : V} (hv : v ∈ s.direction) :

s.WSameSide (v +ᵥ x) y ↔ s.WSameSide x y

source

theorem AffineSubspace.wSameSide_vadd_right_iff {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} {v : V} (hv : v ∈ s.direction) :

s.WSameSide x (v +ᵥ y) ↔ s.WSameSide x y

source

theorem AffineSubspace.sSameSide_vadd_left_iff {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} {v : V} (hv : v ∈ s.direction) :

s.SSameSide (v +ᵥ x) y ↔ s.SSameSide x y

source

theorem AffineSubspace.sSameSide_vadd_right_iff {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} {v : V} (hv : v ∈ s.direction) :

s.SSameSide x (v +ᵥ y) ↔ s.SSameSide x y

source

theorem AffineSubspace.wOppSide_vadd_left_iff {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} {v : V} (hv : v ∈ s.direction) :

s.WOppSide (v +ᵥ x) y ↔ s.WOppSide x y

source

theorem AffineSubspace.wOppSide_vadd_right_iff {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} {v : V} (hv : v ∈ s.direction) :

s.WOppSide x (v +ᵥ y) ↔ s.WOppSide x y

source

theorem AffineSubspace.sOppSide_vadd_left_iff {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} {v : V} (hv : v ∈ s.direction) :

s.SOppSide (v +ᵥ x) y ↔ s.SOppSide x y

source

theorem AffineSubspace.sOppSide_vadd_right_iff {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} {v : V} (hv : v ∈ s.direction) :

s.SOppSide x (v +ᵥ y) ↔ s.SOppSide x y

source

theorem AffineSubspace.wSameSide_smul_vsub_vadd_left {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {p₁ p₂ : P} (x : P) (hp₁ : p₁ ∈ s) (hp₂ : p₂ ∈ s) {t : R} (ht : 0 ≤ t) :

s.WSameSide (t • (x -ᵥ p₁) +ᵥ p₂) x

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theorem AffineSubspace.wSameSide_smul_vsub_vadd_right {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {p₁ p₂ : P} (x : P) (hp₁ : p₁ ∈ s) (hp₂ : p₂ ∈ s) {t : R} (ht : 0 ≤ t) :

s.WSameSide x (t • (x -ᵥ p₁) +ᵥ p₂)

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theorem AffineSubspace.wSameSide_lineMap_left {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x : P} (y : P) (h : x ∈ s) {t : R} (ht : 0 ≤ t) :

s.WSameSide ((AffineMap.lineMap x y) t) y

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theorem AffineSubspace.wSameSide_lineMap_right {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x : P} (y : P) (h : x ∈ s) {t : R} (ht : 0 ≤ t) :

s.WSameSide y ((AffineMap.lineMap x y) t)

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theorem AffineSubspace.wOppSide_smul_vsub_vadd_left {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {p₁ p₂ : P} (x : P) (hp₁ : p₁ ∈ s) (hp₂ : p₂ ∈ s) {t : R} (ht : t ≤ 0) :

s.WOppSide (t • (x -ᵥ p₁) +ᵥ p₂) x

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theorem AffineSubspace.wOppSide_smul_vsub_vadd_right {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {p₁ p₂ : P} (x : P) (hp₁ : p₁ ∈ s) (hp₂ : p₂ ∈ s) {t : R} (ht : t ≤ 0) :

s.WOppSide x (t • (x -ᵥ p₁) +ᵥ p₂)

source

theorem AffineSubspace.wOppSide_lineMap_left {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x : P} (y : P) (h : x ∈ s) {t : R} (ht : t ≤ 0) :

s.WOppSide ((AffineMap.lineMap x y) t) y

source

theorem AffineSubspace.wOppSide_lineMap_right {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x : P} (y : P) (h : x ∈ s) {t : R} (ht : t ≤ 0) :

s.WOppSide y ((AffineMap.lineMap x y) t)

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theorem Wbtw.wSameSide₂₃ {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y z : P} (h : Wbtw R x y z) (hx : x ∈ s) :

s.WSameSide y z

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theorem Wbtw.wSameSide₃₂ {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y z : P} (h : Wbtw R x y z) (hx : x ∈ s) :

s.WSameSide z y

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theorem Wbtw.wSameSide₁₂ {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y z : P} (h : Wbtw R x y z) (hz : z ∈ s) :

s.WSameSide x y

source

theorem Wbtw.wSameSide₂₁ {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y z : P} (h : Wbtw R x y z) (hz : z ∈ s) :

s.WSameSide y x

source

theorem Wbtw.wOppSide₁₃ {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y z : P} (h : Wbtw R x y z) (hy : y ∈ s) :

s.WOppSide x z

source

theorem Wbtw.wOppSide₃₁ {R : Type u_1} {V : Type u_2} {P : Type u_4} [StrictOrderedCommRing R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y z : P} (h : Wbtw R x y z) (hy : y ∈ s) :

s.WOppSide z x

source

@[simp]

theorem AffineSubspace.wOppSide_self_iff {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x : P} :

s.WOppSide x x ↔ x ∈ s

source

theorem AffineSubspace.not_sOppSide_self {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] (s : AffineSubspace R P) (x : P) :

¬s.SOppSide x x

source

theorem AffineSubspace.wSameSide_iff_exists_left {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y p₁ : P} (h : p₁ ∈ s) :

s.WSameSide x y ↔ x ∈ s ∨ ∃ p₂ ∈ s, SameRay R (x -ᵥ p₁) (y -ᵥ p₂)

source

theorem AffineSubspace.wSameSide_iff_exists_right {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y p₂ : P} (h : p₂ ∈ s) :

s.WSameSide x y ↔ y ∈ s ∨ ∃ p₁ ∈ s, SameRay R (x -ᵥ p₁) (y -ᵥ p₂)

source

theorem AffineSubspace.sSameSide_iff_exists_left {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y p₁ : P} (h : p₁ ∈ s) :

s.SSameSide x y ↔ x ∉ s ∧ y ∉ s ∧ ∃ p₂ ∈ s, SameRay R (x -ᵥ p₁) (y -ᵥ p₂)

source

theorem AffineSubspace.sSameSide_iff_exists_right {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y p₂ : P} (h : p₂ ∈ s) :

s.SSameSide x y ↔ x ∉ s ∧ y ∉ s ∧ ∃ p₁ ∈ s, SameRay R (x -ᵥ p₁) (y -ᵥ p₂)

source

theorem AffineSubspace.wOppSide_iff_exists_left {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y p₁ : P} (h : p₁ ∈ s) :

s.WOppSide x y ↔ x ∈ s ∨ ∃ p₂ ∈ s, SameRay R (x -ᵥ p₁) (p₂ -ᵥ y)

source

theorem AffineSubspace.wOppSide_iff_exists_right {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y p₂ : P} (h : p₂ ∈ s) :

s.WOppSide x y ↔ y ∈ s ∨ ∃ p₁ ∈ s, SameRay R (x -ᵥ p₁) (p₂ -ᵥ y)

source

theorem AffineSubspace.sOppSide_iff_exists_left {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y p₁ : P} (h : p₁ ∈ s) :

s.SOppSide x y ↔ x ∉ s ∧ y ∉ s ∧ ∃ p₂ ∈ s, SameRay R (x -ᵥ p₁) (p₂ -ᵥ y)

source

theorem AffineSubspace.sOppSide_iff_exists_right {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y p₂ : P} (h : p₂ ∈ s) :

s.SOppSide x y ↔ x ∉ s ∧ y ∉ s ∧ ∃ p₁ ∈ s, SameRay R (x -ᵥ p₁) (p₂ -ᵥ y)

source

theorem AffineSubspace.WSameSide.trans {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y z : P} (hxy : s.WSameSide x y) (hyz : s.WSameSide y z) (hy : y ∉ s) :

s.WSameSide x z

source

theorem AffineSubspace.WSameSide.trans_sSameSide {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y z : P} (hxy : s.WSameSide x y) (hyz : s.SSameSide y z) :

s.WSameSide x z

source

theorem AffineSubspace.WSameSide.trans_wOppSide {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y z : P} (hxy : s.WSameSide x y) (hyz : s.WOppSide y z) (hy : y ∉ s) :

s.WOppSide x z

source

theorem AffineSubspace.WSameSide.trans_sOppSide {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y z : P} (hxy : s.WSameSide x y) (hyz : s.SOppSide y z) :

s.WOppSide x z

source

theorem AffineSubspace.SSameSide.trans_wSameSide {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y z : P} (hxy : s.SSameSide x y) (hyz : s.WSameSide y z) :

s.WSameSide x z

source

theorem AffineSubspace.SSameSide.trans {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y z : P} (hxy : s.SSameSide x y) (hyz : s.SSameSide y z) :

s.SSameSide x z

source

theorem AffineSubspace.SSameSide.trans_wOppSide {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y z : P} (hxy : s.SSameSide x y) (hyz : s.WOppSide y z) :

s.WOppSide x z

source

theorem AffineSubspace.SSameSide.trans_sOppSide {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y z : P} (hxy : s.SSameSide x y) (hyz : s.SOppSide y z) :

s.SOppSide x z

source

theorem AffineSubspace.WOppSide.trans_wSameSide {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y z : P} (hxy : s.WOppSide x y) (hyz : s.WSameSide y z) (hy : y ∉ s) :

s.WOppSide x z

source

theorem AffineSubspace.WOppSide.trans_sSameSide {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y z : P} (hxy : s.WOppSide x y) (hyz : s.SSameSide y z) :

s.WOppSide x z

source

theorem AffineSubspace.WOppSide.trans {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y z : P} (hxy : s.WOppSide x y) (hyz : s.WOppSide y z) (hy : y ∉ s) :

s.WSameSide x z

source

theorem AffineSubspace.WOppSide.trans_sOppSide {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y z : P} (hxy : s.WOppSide x y) (hyz : s.SOppSide y z) :

s.WSameSide x z

source

theorem AffineSubspace.SOppSide.trans_wSameSide {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y z : P} (hxy : s.SOppSide x y) (hyz : s.WSameSide y z) :

s.WOppSide x z

source

theorem AffineSubspace.SOppSide.trans_sSameSide {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y z : P} (hxy : s.SOppSide x y) (hyz : s.SSameSide y z) :

s.SOppSide x z

source

theorem AffineSubspace.SOppSide.trans_wOppSide {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y z : P} (hxy : s.SOppSide x y) (hyz : s.WOppSide y z) :

s.WSameSide x z

source

theorem AffineSubspace.SOppSide.trans {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y z : P} (hxy : s.SOppSide x y) (hyz : s.SOppSide y z) :

s.SSameSide x z

source

theorem AffineSubspace.wSameSide_and_wOppSide_iff {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} :

s.WSameSide x y ∧ s.WOppSide x y ↔ x ∈ s ∨ y ∈ s

source

theorem AffineSubspace.WSameSide.not_sOppSide {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} (h : s.WSameSide x y) :

¬s.SOppSide x y

source

theorem AffineSubspace.SSameSide.not_wOppSide {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} (h : s.SSameSide x y) :

¬s.WOppSide x y

source

theorem AffineSubspace.SSameSide.not_sOppSide {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} (h : s.SSameSide x y) :

¬s.SOppSide x y

source

theorem AffineSubspace.WOppSide.not_sSameSide {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} (h : s.WOppSide x y) :

¬s.SSameSide x y

source

theorem AffineSubspace.SOppSide.not_wSameSide {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} (h : s.SOppSide x y) :

¬s.WSameSide x y

source

theorem AffineSubspace.SOppSide.not_sSameSide {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} (h : s.SOppSide x y) :

¬s.SSameSide x y

source

theorem AffineSubspace.wOppSide_iff_exists_wbtw {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} :

s.WOppSide x y ↔ ∃ p ∈ s, Wbtw R x p y

source

theorem AffineSubspace.SOppSide.exists_sbtw {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} (h : s.SOppSide x y) :

∃ p ∈ s, Sbtw R x p y

source

theorem Sbtw.sOppSide_of_not_mem_of_mem {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y z : P} (h : Sbtw R x y z) (hx : x ∉ s) (hy : y ∈ s) :

s.SOppSide x z

source

theorem AffineSubspace.sSameSide_smul_vsub_vadd_left {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x p₁ p₂ : P} (hx : x ∉ s) (hp₁ : p₁ ∈ s) (hp₂ : p₂ ∈ s) {t : R} (ht : 0 < t) :

s.SSameSide (t • (x -ᵥ p₁) +ᵥ p₂) x

source

theorem AffineSubspace.sSameSide_smul_vsub_vadd_right {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x p₁ p₂ : P} (hx : x ∉ s) (hp₁ : p₁ ∈ s) (hp₂ : p₂ ∈ s) {t : R} (ht : 0 < t) :

s.SSameSide x (t • (x -ᵥ p₁) +ᵥ p₂)

source

theorem AffineSubspace.sSameSide_lineMap_left {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} (hx : x ∈ s) (hy : y ∉ s) {t : R} (ht : 0 < t) :

s.SSameSide ((AffineMap.lineMap x y) t) y

source

theorem AffineSubspace.sSameSide_lineMap_right {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} (hx : x ∈ s) (hy : y ∉ s) {t : R} (ht : 0 < t) :

s.SSameSide y ((AffineMap.lineMap x y) t)

source

theorem AffineSubspace.sOppSide_smul_vsub_vadd_left {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x p₁ p₂ : P} (hx : x ∉ s) (hp₁ : p₁ ∈ s) (hp₂ : p₂ ∈ s) {t : R} (ht : t < 0) :

s.SOppSide (t • (x -ᵥ p₁) +ᵥ p₂) x

source

theorem AffineSubspace.sOppSide_smul_vsub_vadd_right {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x p₁ p₂ : P} (hx : x ∉ s) (hp₁ : p₁ ∈ s) (hp₂ : p₂ ∈ s) {t : R} (ht : t < 0) :

s.SOppSide x (t • (x -ᵥ p₁) +ᵥ p₂)

source

theorem AffineSubspace.sOppSide_lineMap_left {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} (hx : x ∈ s) (hy : y ∉ s) {t : R} (ht : t < 0) :

s.SOppSide ((AffineMap.lineMap x y) t) y

source

theorem AffineSubspace.sOppSide_lineMap_right {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} (hx : x ∈ s) (hy : y ∉ s) {t : R} (ht : t < 0) :

s.SOppSide y ((AffineMap.lineMap x y) t)

source

theorem AffineSubspace.setOf_wSameSide_eq_image2 {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x p : P} (hx : x ∉ s) (hp : p ∈ s) :

{y : P | s.WSameSide x y} = Set.image2 (fun (t : R) (q : P) => t • (x -ᵥ p) +ᵥ q) (Set.Ici 0) ↑s

source

theorem AffineSubspace.setOf_sSameSide_eq_image2 {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x p : P} (hx : x ∉ s) (hp : p ∈ s) :

{y : P | s.SSameSide x y} = Set.image2 (fun (t : R) (q : P) => t • (x -ᵥ p) +ᵥ q) (Set.Ioi 0) ↑s

source

theorem AffineSubspace.setOf_wOppSide_eq_image2 {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x p : P} (hx : x ∉ s) (hp : p ∈ s) :

{y : P | s.WOppSide x y} = Set.image2 (fun (t : R) (q : P) => t • (x -ᵥ p) +ᵥ q) (Set.Iic 0) ↑s

source

theorem AffineSubspace.setOf_sOppSide_eq_image2 {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x p : P} (hx : x ∉ s) (hp : p ∈ s) :

{y : P | s.SOppSide x y} = Set.image2 (fun (t : R) (q : P) => t • (x -ᵥ p) +ᵥ q) (Set.Iio 0) ↑s

source

theorem AffineSubspace.wOppSide_pointReflection {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x : P} (y : P) (hx : x ∈ s) :

s.WOppSide y ((AffineEquiv.pointReflection R x) y)

source

theorem AffineSubspace.sOppSide_pointReflection {R : Type u_1} {V : Type u_2} {P : Type u_4} [LinearOrderedField R] [AddCommGroup V] [Module R V] [AddTorsor V P] {s : AffineSubspace R P} {x y : P} (hx : x ∈ s) (hy : y ∉ s) :

s.SOppSide y ((AffineEquiv.pointReflection R x) y)

source

theorem AffineSubspace.isConnected_setOf_wSameSide {V : Type u_2} {P : Type u_4} [SeminormedAddCommGroup V] [NormedSpace ℝ V] [PseudoMetricSpace P] [NormedAddTorsor V P] {s : AffineSubspace ℝ P} (x : P) (h : (↑s).Nonempty) :

IsConnected {y : P | s.WSameSide x y}

source

theorem AffineSubspace.isPreconnected_setOf_wSameSide {V : Type u_2} {P : Type u_4} [SeminormedAddCommGroup V] [NormedSpace ℝ V] [PseudoMetricSpace P] [NormedAddTorsor V P] (s : AffineSubspace ℝ P) (x : P) :

IsPreconnected {y : P | s.WSameSide x y}

source

theorem AffineSubspace.isConnected_setOf_sSameSide {V : Type u_2} {P : Type u_4} [SeminormedAddCommGroup V] [NormedSpace ℝ V] [PseudoMetricSpace P] [NormedAddTorsor V P] {s : AffineSubspace ℝ P} {x : P} (hx : x ∉ s) (h : (↑s).Nonempty) :

IsConnected {y : P | s.SSameSide x y}

source

theorem AffineSubspace.isPreconnected_setOf_sSameSide {V : Type u_2} {P : Type u_4} [SeminormedAddCommGroup V] [NormedSpace ℝ V] [PseudoMetricSpace P] [NormedAddTorsor V P] (s : AffineSubspace ℝ P) (x : P) :

IsPreconnected {y : P | s.SSameSide x y}

source

theorem AffineSubspace.isConnected_setOf_wOppSide {V : Type u_2} {P : Type u_4} [SeminormedAddCommGroup V] [NormedSpace ℝ V] [PseudoMetricSpace P] [NormedAddTorsor V P] {s : AffineSubspace ℝ P} (x : P) (h : (↑s).Nonempty) :

IsConnected {y : P | s.WOppSide x y}

source

theorem AffineSubspace.isPreconnected_setOf_wOppSide {V : Type u_2} {P : Type u_4} [SeminormedAddCommGroup V] [NormedSpace ℝ V] [PseudoMetricSpace P] [NormedAddTorsor V P] (s : AffineSubspace ℝ P) (x : P) :

IsPreconnected {y : P | s.WOppSide x y}

source

theorem AffineSubspace.isConnected_setOf_sOppSide {V : Type u_2} {P : Type u_4} [SeminormedAddCommGroup V] [NormedSpace ℝ V] [PseudoMetricSpace P] [NormedAddTorsor V P] {s : AffineSubspace ℝ P} {x : P} (hx : x ∉ s) (h : (↑s).Nonempty) :

IsConnected {y : P | s.SOppSide x y}

source

theorem AffineSubspace.isPreconnected_setOf_sOppSide {V : Type u_2} {P : Type u_4} [SeminormedAddCommGroup V] [NormedSpace ℝ V] [PseudoMetricSpace P] [NormedAddTorsor V P] (s : AffineSubspace ℝ P) (x : P) :

IsPreconnected {y : P | s.SOppSide x y}

Documentation

Mathlib.Analysis.Convex.Side

Sides of affine subspaces #

Main definitions #