Legendrian non-singular point
preferred label: نقطه ناتکین لژاندری @fa
type: Concept
related: non-degenerate matrix

non-degenerate matrix
related: Legendrian non-singular point
broader: square matrix
preferred label: ماتریس ناتباهیده @fa
type: Concept

square matrix
preferred label: ماتریس مربعی @fa
type: Concept
narrower: non-degenerate matrix