Banach algebra
preferred label: جبر باناخ @fa
type: Concept
narrower: Gelfand-Mazur theorem

invertible element
preferred label: عنصر وارون‌پذیر @fa
type: Concept
related: Gelfand-Mazur theorem

Gelfand-Mazur theorem
related: invertible element
related: complex field
broader: Banach algebra
preferred label: قضیه گلفاند-مزور @fa
type: Concept

complex field
preferred label: میدان مختلط @fa
type: Concept
related: Gelfand-Mazur theorem