William M. Whyburn

Differential equations with general boundary conditions

William M. Whyburn · Bulletin of the American Mathematical Society · 1942 · 113 citations · Full text

A nonlinear boundary value problem for second order differential systems

William M. Whyburn · Pacific Journal of Mathematics · 1955 · 25 citations · Full text

Free Boundary Problem, Oscillation Theory, Nonlinear Hyperbolic Problem +2

On Self-Adjoint Ordinary Differential Equations of the Fourth Order

William M. Whyburn · American Journal of Mathematics · 1930 · 24 citations

Lie Point Symmetry, Fourth Order, Integrable System +1

Non-isolated critical points of functions

William M. Whyburn · Bulletin of the American Mathematical Society · 1929 · 18 citations · Full text

Existence and oscillation theorems for non-linear differential systems of the second order

William M. Whyburn · Transactions of the American Mathematical Society · 1928 · 17 citations

Nonlinear Functional Analysis, Oscillation Theorems, Characteristic Number +7