Mathematics – Classical Analysis and ODEs
Scientific paper
2011-04-29
Mathematics
Classical Analysis and ODEs
Scientific paper
We prove some new results on existence of solutions to first--order ordinary differential equations with deviating arguments. Delay differential equations are included in our general framework, which even allows deviations to depend on the unknown solutions. Our existence results lean on new definitions of lower and upper solutions introduced in this paper, and we show with an example that similar results with the classical definitions are false. We also introduce an example showing that the problems considered need not have the least (or the greatest) solution between given lower and upper solutions, but we can prove that they do have minimal and maximal solutions in the usual set--theoretic sense. Sufficient conditions for the existence of lower and upper solutions, with some examples of application, are provided too.
Figueroa Rubén
Pouso Rodrigo López
No associations
LandOfFree
Existence of minimal and maximal solutions to first--order differential equations with state--dependent deviated arguments does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Existence of minimal and maximal solutions to first--order differential equations with state--dependent deviated arguments, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Existence of minimal and maximal solutions to first--order differential equations with state--dependent deviated arguments will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-17516