Rare card

Graded ring

Value

50 W

Attack

731

Defence

585

Players

0

In mathematics, in particular abstract algebra, a graded ring is a ring such that the underlying additive group is a direct sum of abelian groups R i {\displaystyle R_{i}} such that ⁠ R i R j ⊆ R i + j {\displaystyle R_{i}R_{j}\subseteq R_{i+j}} ⁠.

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