discrete valuationとは 意味・読み方・使い方

名詞

discrete valuation (複数形 discrete valuations)

1. (algebra, field theory) A valuation (on some field) that takes integer values (including infinity).
   • 2000, Freddy Van Oystaeyen, Algebraic Geometry for Associative Algebras, CRC Press, page 173,

     Therefore the theory branches in two essential parts : first the study of discrete valuations of the Weyl field ${\displaystyle D_{1}(K)}$ extending a discrete valuation of ${\displaystyle K}$, secondly the discrete valuations of ${\displaystyle D_{1}(K)}$ having the purely transcendental field ${\displaystyle K(t)}$ as a residue field.

   • 2004, Farahat S. Aly, Freddy Van Oystaeyen, Hopf Order Module Algebra Orders, Stefaan Caenepeel, Fred Van Oystaeyen (editors), Hopf Algebras in Noncommutative Geometry and Physics, CRC Press, page 21,

     One of the few possibilities to extend some arithmetic aspects of number theory to more abstract fields is via valuation theory and, as a first step, we may restrict attention to discrete valuations.

   • 2011, Ricardo Portilla, Parametrizing nilpotent orbits in p-adic symmetric spaces, Robert S. Doran, Paul J. Sally, Jr., Loren Spice (editors), Harmonic Analysis on Reductive, p-adic Groups, American Mathematical Society, page 201,

     Let k be a field with a nontrivial discrete valuation which is complete and has perfect residue field.