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math.CA2006★ 1 cited
Optimal uniform estimates and rigorous asymptotics beyond all orders for a class of ODE's
O. Costin, M. D. Kruskal
For first order differential equations of the form and second order homogeneous linear differential equations with locally integrab…
math.CA2006
Movable singularities of solutions of difference equations in relation to solvability and a study of a superstable fixed point
O. Costin, M. D. Kruskal
A unique analytic continuation result is proven for solutions of a relatively general class of difference equations by using techniques of generalized Borel summability. We overvie…
math.CA2006
Borel summation of adiabatic invariants
O. Costin, L. Dupaigne, M. D. Kruskal
Borel summation techniques are developed to obtain exact invariants from formal adiabatic invariants (given as divergent series in a small parameter) for a class of differential eq…