On Poincaré's perturbation theorem and a theorem of W. S. Loud

• 31 January 1970
• journal article
• Published by Elsevier in Journal of Differential Equations
• Vol. 7  (1) , 34-53
• https://doi.org/10.1016/0022-0396(70)90122-1

Abstract

Keywords

• LOUD
• PERTURBATION THEOREM AND A THEOREM
• POINCAR'S
• POINCARÉ'S PERTURBATION THEOREM