Sn group
type: Concept
broader: point group
preferred label: گروه Sn @fa
related: improper axis of symmetry

point group
type: Concept
narrower: Sn group
preferred label: گروه نقطه‌ای @fa

improper axis of symmetry
type: Concept
preferred label: محور تقارن نامتعارف @fa
related: Sn group