Maxima and minima.

Variational methods for eigenvalue approximation / by: (Language materials, printed)

Optimization theory by: (Language materials, printed)

Minimax systens and critical point theory by: (Language materials, printed)

Theory of extremal problems by: (Language materials, printed)

Eigenvalues.

Extremal problems (Mathematics)

Partial Differential Equations.

Differential operators.

Approximation theory.

Ordinary Differential Equations.

Maxima and minima.

Mathematics.

Mathematical optimization.

Critical point theory (Mathematical analysis)

Calculus of variations.

Functional Analysis.