暇つぶし2chat MATH

- 暇つぶし2ch90:ky と M. Kruskal が、KdV方程式 (KdV: Korteweg-de Vries) の数値解析から、上の2条件を満たす孤立波を発見し、粒子性をあらわす接尾語-onを使ってそれをソリトンと名付けたことによる。 https://en.wikipedia.org/wiki/Soliton (抜粋) History In 1895 Diederik Korteweg and Gustav de Vries provided what is now known as the Korteweg?de Vries equation, including solitary wave and periodic cnoidal wave solutions. In 1965 Norman Zabusky of Bell Labs and Martin Kruskal of Princeton University first demonstrated soliton behavior in media subject to the Korteweg?de Vries equation (KdV equation) in a computational investigation using a finite difference approach. They also showed how this behavior explained the puzzling earlier work of Fermi, Pasta, Ulam, and Tsingou.[5]