Re: Positive systems
- To: mathgroup at smc.vnet.net
- Subject: [mg26152] Re: Positive systems
- From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
- Date: Thu, 30 Nov 2000 01:03:58 -0500 (EST)
- Organization: Universitaet Leipzig
- References: <8vvooa$2rn@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Hi, you can't -- there exist no theorie about systems that are restricted in half spaces. Your solution satisfy the condition or is invalid. Regards Jens Stefano Maggi wrote: > > I need to integrate from initial conditions a positive system (a system with > all the variables to be positive or zero). How can I specify this constraint > using NDSolve? > > Thanks in advance > Stefano Maggi