ring
Định nghĩa
Võ đài, sàn đấu, đấu trường.
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Vòng tròn nhỏ.
Ví dụ :
Vòng bảo vệ.
Ví dụ :
Vòng kẹp kính ngắm, khoen giữ kính.
Ví dụ :
Ví dụ :
Vành.
An algebraic structure which consists of a set with two binary operations: an additive operation and a multiplicative operation, such that the set is an abelian group under the additive operation, a monoid under the multiplicative operation, and such that the multiplicative operation is distributive with respect to the additive operation.