A topological characterization of the ω-limit sets for analytic flows on the plane, the sphere and the projective plane

<i>Theory of Ordinary Differential Equations</i>

Earl A. Coddington, Norman Levinson, T. Teichmann · Physics Today · 1956 · 6.3K citations

Natural Sciences, Mathematics, Differential Equations +6

Theory of ordinary differential equations

H.L. Platzer · Journal of the Franklin Institute · 1956 · 5.7K citations

Natural Sciences, Mathematics, Differential Equations +7

Analytic extensions of differentiable functions defined in closed sets

Hassler Whitney · Transactions of the American Mathematical Society · 1934 · 859 citations

Natural Sciences, Mathematics, Differential Equations +5

Differential Equations--Geometric Theory

Harry Pollard, Solomon Lefschetz · Mathematics of Computation · 1964 · 756 citations · Full text

<i>Qualitative Theory of Second-Order Dynamic Systems</i>

E. A. Leontovich, I. I. Gordon, Annelise Maier et al. · Physics Today · 1974 · 458 citations

Natural Sciences, Mathematics, Complex Systems +11