absolute constantとは 意味・読み方・使い方

名詞

absolute constant (複数形 absolute constants)

1. (mathematics) A constant that maintains the same value wherever it occurs; such as π.^[1]
   • 2004, Chunjie Wang, “On Korenblum's constant”, in Journal of Mathematical Analysis and Applications‎^[1], volume 296, number 1, Elsevier, DOI:10.1016/j.jmaa.2004.04.012, ISSN 0022-247X, pages 262-264:

     Korenblum conjectured that there is an absolute constant ${\displaystyle c\in (0,1)}$, such that whenever ${\displaystyle |f(z)|\leqslant |g(z)|}$ ${\displaystyle (f,g\in A^{2}(D))}$ in the annulus ${\displaystyle c<|z|<1}$, then ${\displaystyle ||f||\leqslant ||g||}$.

2. Used other than figuratively or idiomatically: see absolute,‎ constant.
   • 1907, William Estabrook Chancellor, A Theory of Motives, Ideals, and Values in Education, Houghton, Mifflin, LCCN 07033579, OCLC 1175984779, page 424:

     Play is an absolute constant in education from birth until full maturity; and it is a very valuable aid in manhood and down to old age.

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