Biànfēnxué shì yánjiū fànhán jízhí de shùxué fēnzhī.
Calculus of variations is the branch of mathematics that studies extrema of functionals.
Tips
usage
The math discipline founded by Euler and Lagrange. 变分 = 'variation' (the perturbation δ in δJ=0); 学 = 'study of'. Cousin term: 变分法 ('variational method').
