signum function
(physics) Thermoluminescence; the release of previously absorbed radiation upon being heated.
(mathematics) The function that determines the sign of a real number, yielding -1 if negative, +1 if positive, or otherwise zero.
Of a vehicle, fitted with a tilt (canvass covering).
To sieve or strain (something). / To separate or scatter (things) as if by sieving. / +object To scrutinise (someone or something) carefully so as to find the truth.
実数の符号を判定する関数をプロットすると、負の入力では-1、正の入力では+1、ゼロでは0という三つの平坦な領域が現れます。
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