The Euler–Lagrange EquationsJean-Pierre BourguignonSpringer Monographs in MathematicsVariational Calculus(2022)引用 0|浏览4暂无评分关键词euler–lagrange,euler–lagrangeAI 理解论文溯源树样例生成溯源树,研究论文发展脉络Chat Paper正在生成论文摘要