def definition def or abbrev

`countLegal`

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

formal statement (Lean)

  35def countLegal (ts : List Triad) : ℕ :=

Definition body.

  36  ts.countP (fun t => legalTriad t)
  37
  38end SelectionRules
  39end Crystallography
  40end IndisputableMonolith

Lean names referenced from this declaration's body.