Hurwitz, A.

Japanese: Hurwitz,A.(英語表記)HurwitzA
Hurwitz, A.

...This method is called the Routh stability criterion. In 1895, A. Hurwitz proposed a method to check asymptotic stability by creating a matrix consisting of the coefficients of an algebraic equation and determining the sign of all its principal minors. This method was later shown to be the same as Routh's method, and is now called the Routh-Hurwitz stability criterion. On the other hand, the necessary and sufficient condition for the asymptotic stability of a linear difference equation is that the absolute values ​​of the roots of its characteristic equation are all less than 1. The criterion for this was studied by I. Schur and A. Cohn in the 1900s, and is known as the Schur-Kohn stability criterion. ...

*Some of the terminology that mentions "Hurwitz, A." is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…この方法をラウスの安定判別法と呼んでいる。95年フルビッツA.Hurwitzは,代数方程式の係数から成る行列を作り,そのすべての主座小行列式の正負を判別することによって漸近安定性をチェックする方法を提案したが,その後これはラウスの方法と同じものになることが示されるに及び,これをラウス=フルビッツの安定判別法と呼んでいる。 他方,線形の差分方程式の漸近安定性の必要十分条件は,その固有方程式の根の絶対値がすべて1より小さいこととなるが,そのための判別法は1900年代になってシュールI.SchurとコーンA.Cohnによって研究され,シュール=コーンの安定判別法として知られている。…

※「Hurwitz,A.」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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