pith. machine review for the scientific record. sign in
def definition def or abbrev

lensing_param

show as:
view Lean formalization →

No prose has been written for this declaration yet. The Lean source and graph data below render without it.

generate prose now

formal statement (Lean)

  32noncomputable def lensing_param (M b : ℝ) : ℝ := schwarzschild_radius M / b

proof body

Definition body.

  33
  34/-! ## Newtonian vs. GR Deflection -/
  35
  36/-- **Newtonian deflection** (treating photon as particle):
  37    θ_Newton = 2GM/(c²b) = r_s / b -/

depends on (5)

Lean names referenced from this declaration's body.