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

planckArea

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)

  60noncomputable def planckArea : ℝ := planckLength^2

proof body

Definition body.

  61
  62/-! ## The Bekenstein-Hawking Entropy -/
  63
  64/-- The Bekenstein-Hawking entropy of a black hole.
  65    S_BH = A / (4 × l_p²) = A / (4 G_N ℏ / c³) -/

used by (15)

From the project-wide theorem graph. These declarations reference this one in their body.

depends on (18)

Lean names referenced from this declaration's body.