subring

subring读音音标

英 [\'sʌbrɪŋ]

美 [\'sʌbˌrɪŋ]

subring意思解释

n.

子环；

英英释义

In mathematics, a subring of R is a subset of a ring that is itself a ring when binary operations of addition and multiplication on R are restricted to the subset, and which contains the multiplicative identity of R. For those who define rings without requiring the existence of a multiplicative identity, a subring of R is just a subset of R that is a ring for the operations of R (this does imply it contains the additive identity of R).