def
definition
def or abbrev
isSpaceTranslationInvariant
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formal statement (Lean)
77def isSpaceTranslationInvariant (S : RealAction → ℝ) : Prop :=
proof body
Definition body.
78 ∀ dx : ℝ, IsSymmetryOf (spaceShift dx) S
79
80/-- The space-translation flow on `RealAction`. -/