Solutions of continuous ODEs obtained as the limit of solutions of Lipschitz ODEs

Authors
Citation
Jc. Robinson, Solutions of continuous ODEs obtained as the limit of solutions of Lipschitz ODEs, NONLINEARIT, 12(3), 1999, pp. 555-561
Citations number
3
Categorie Soggetti
Mathematics
Journal title
NONLINEARITY
ISSN journal
09517715 → ACNP
Volume
12
Issue
3
Year of publication
1999
Pages
555 - 561
Database
ISI
SICI code
0951-7715(199905)12:3<555:SOCOOA>2.0.ZU;2-E
Abstract
One method of proving the existence of solutions for ODEs (x) over dot = f( x), where f is continuous, is to approximate f by a sequence of Lipschitz f unctions f, for which standard existence results can be applied. This short paper shows conversely that, in a phase space that is not two-dimensional, for each solution of (x) over dot = f(x) (such solutions may not be unique ) there is a sequence of Lipschitz functions f(n) which approximate f and w hich have solutions which converge to the chosen limit.