formal group
type: Concept
preferred label: گروه صوری @fa
related: formal power series ring

power series ring
type: Concept
preferred label: حلقه سری توانی @fa
related: formal power series ring

formal power series ring
type: Concept
broader: matrix ring
preferred label: حلقه سری توانی صوری @fa
related: power series ring
related: Cohen structure theorem
related: formal group

matrix ring
type: Concept
narrower: formal power series ring
preferred label: حلقه ماتریسی @fa

Cohen structure theorem
type: Concept
preferred label: قضیه ساختاری کوهن @fa
related: formal power series ring