refactor: Remove double empty lines

HepLean/SpaceTime/LorentzGroup/Basic.lean

@@ -44,7 +44,6 @@ def LorentzGroup (d : ℕ) : Set (Matrix (Fin 1 ⊕ Fin d) (Fin 1 ⊕ Fin d) ℝ
     {Λ : Matrix (Fin 1 ⊕ Fin d) (Fin 1 ⊕ Fin d) ℝ |
      ∀ (x y : LorentzVector d), ⟪Λ *ᵥ x, Λ *ᵥ y⟫ₘ = ⟪x, y⟫ₘ}
 
-
 namespace LorentzGroup
 /-- Notation for the Lorentz group. -/
 scoped[LorentzGroup] notation (name := lorentzGroup_notation) "𝓛" => LorentzGroup

HepLean/SpaceTime/LorentzGroup/Boosts.lean

@@ -140,7 +140,6 @@ lemma toMatrix_continuous (u : FuturePointing d) : Continuous (toMatrix u) := by
   exact FuturePointing.metric_continuous _
   exact fun x => FuturePointing.one_add_metric_non_zero u x
 
-
 lemma toMatrix_in_lorentzGroup (u v : FuturePointing d) : (toMatrix u v) ∈ LorentzGroup d:= by
   intro x y
   rw [toMatrix_mulVec, toMatrix_mulVec, genBoost, genBoostAux₁, genBoostAux₂]
@@ -161,7 +160,6 @@ lemma toLorentz_continuous (u : FuturePointing d) : Continuous (toLorentz u) :=
   refine Continuous.subtype_mk ?_ (fun x => toMatrix_in_lorentzGroup u x)
   exact toMatrix_continuous u
 
-
 lemma toLorentz_joined_to_1 (u v : FuturePointing d) : Joined 1 (toLorentz u v) := by
   obtain ⟨f, _⟩ := FuturePointing.isPathConnected.joinedIn u trivial v trivial
   use ContinuousMap.comp ⟨toLorentz u, toLorentz_continuous u⟩ f
@@ -180,8 +178,6 @@ lemma isProper (u v : FuturePointing d) : IsProper (toLorentz u v) :=
 
 end genBoost
 
-
 end LorentzGroup
 
-
 end

HepLean/SpaceTime/LorentzGroup/Orthochronous.lean

@@ -17,10 +17,8 @@ matrices.
 
 -/
 
-
 noncomputable section
 
-
 open Matrix
 open Complex
 open ComplexConjugate
@@ -66,7 +64,6 @@ lemma not_orthochronous_iff_le_zero :
   rw [IsOrthochronous_iff_ge_one]
   linarith
 
-
 /-- The continuous map taking a Lorentz transformation to its `0 0` element. -/
 def timeCompCont : C(LorentzGroup d, ℝ) := ⟨fun Λ => timeComp Λ  ,
    Continuous.matrix_elem (continuous_iff_le_induced.mpr fun _ a => a) (Sum.inl 0) (Sum.inl 0)⟩

HepLean/SpaceTime/LorentzGroup/Proper.lean

@@ -11,10 +11,8 @@ We define the give a series of lemmas related to the determinant of the lorentz
 
 -/
 
-
 noncomputable section
 
-
 open Matrix
 open Complex
 open ComplexConjugate
@@ -31,7 +29,6 @@ lemma det_eq_one_or_neg_one (Λ : 𝓛 d) : Λ.1.det = 1 ∨ Λ.1.det = -1 := by
   simp [det_mul, det_dual] at h1
   exact mul_self_eq_one_iff.mp h1
 
-
 local notation  "ℤ₂" => Multiplicative (ZMod 2)
 
 instance : TopologicalSpace ℤ₂ := instTopologicalSpaceFin
@@ -76,7 +73,6 @@ lemma detContinuous_eq_iff_det_eq (Λ Λ' : LorentzGroup d) :
   · intro h
     simp [detContinuous, h]
 
-
 /-- The representation taking a lorentz matrix to its determinant. -/
 @[simps!]
 def detRep : 𝓛 d →* ℤ₂ where

HepLean/SpaceTime/LorentzGroup/Rotations.lean

@@ -54,8 +54,6 @@ def SO3ToLorentz : SO(3) →* LorentzGroup 3 where
     apply Subtype.eq
     simp [Matrix.fromBlocks_multiply]
 
-
 end LorentzGroup
 
-
 end