I. M. Gelfand的图书会按更新时间持续补充，适合从代表作和同主题书继续延展阅读。
Calculus of Variations
I. M. Gelfand
评分 9.5分
First 6 chapters include theory of fields and sufficient conditions for weak and strong extrema. Chapter 7 considers application of variation methods to systems with infinite degrees of freedom, an
