Quotient ringとは 意味・読み方・使い方

名詞

quotient ring (複数形 quotient rings)

1. (algebra, ring theory) For a given ring R and ideal I contained in R, another ring, denoted R / I, whose elements are the cosets of I in R.
   • 1976, Kenneth Goodearl, Ring Theory: Nonsingular Rings and Modules, CRC Press, page 39,

     The third section covers a construct similar to the ring S°R — the maximal quotient ring, which exists for any ring. (When R is nonsingular, the maximal quotient ring is exactly S°R.) Finally, Section D provides an answer to the question of which right and left nonsingular rings have coinciding maximal right and left quotient rings.

   • 2006, Peter A. Linnell, Noncommutative localization in group rings, Andrew Ranicki (editor), Noncommutative Localization in Algebra and Topology, Cambridge University Press, page 42,

     On the other hand if already every element of R is either invertible or a zerodivisor, then R is its own classical quotient ring.

   • 2012, Svetla Nikova (translator), Oleg A. Logachev, A. A. Salnikov, V. V. Yashchenko, Boolean Functions in Coding Theory and Cryptography, American Mathematical Society, page 10,

     2. An ideal P of the ring R is prime if and only if the quotient ring R/P is a domain.