Calculus of variations Mathematical optimization 7 Boundary value problems 4 Control theory 4 Congresses 3 Differential equations 3 Mathematical physics 3 Maxima and minima 3 Continuum mechanics 2 Differential equations, Partial 2 Economics, Mathematical 2 Elasticity 2 Engineering mathematics 2 Hilbert space 2 Numerical solutions 2 Approximation theory 1 Conformal mapping 1 Convex functions 1 Curves on surfaces 1 Data processing 1 Differentiable manifolds 1 Diffusion 1 Dynamic programming 1 Eigenvalues 1 Engineering 1 Extremal problems (Mathematics) 1 Finite element method 1 Fluid dynamics 1 Forms, Quadratic 1 Functions 1