def
definition
def or abbrev
apply
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formal statement (Lean)
145@[simp] def apply (f : AffineMapZ) (n : ℤ) : ℝ := f.slope * (n : ℝ) + f.offset
proof body
Definition body.
146
147/-- Map δ-subgroup to ℝ by composing an affine map with a provided projection to ℤ. -/