calculus of variations
Mathematical field dealing with finding functions that optimize functionals. Used in pure and applied mathematics.
The calculus of variations is a branch of mathematics that forms the basis of optimal control theory.
variational method
In quantum mechanics, an approximation technique for finding ground states and energies. Often used in computational physics.
量子力学では、変分法を用いて基底状態のエネルギーを近似的に求めることができます。
In quantum mechanics, the variational method can be used to approximately determine the ground state energy.