def
definition
def or abbrev
SolvesModifiedPoisson
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formal statement (Lean)
23def SolvesModifiedPoisson (P : KernelParams) (k a δρ Φ : ℝ) : Prop :=
proof body
Definition body.
24 - (k^2 * Φ) = 4 * Real.pi * kernel P k a * δρ
25
26/-- The operator definition satisfies the predicate. -/