<div class="gmail_quote">On Thu, Jun 23, 2011 at 12:18, Juha Jäykkä <span dir="ltr"><<a href="mailto:juhaj@iki.fi">juhaj@iki.fi</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div id=":20o">I was expecting that, but the equation is rather long to write in ascii. I do<br>
have a latex version somewhere that I can send if necessary. It is horribly<br>
nonlinear, though, including a term like (d/dx f) * (d^2/dx^2) f.</div></blockquote></div><br><div>What physical system does it represent and what sort of discretization are you using?</div><div><br></div><div>Do you know that the equations have a solution for all values of the parameter? Even simple problems may not have solutions for all values of a parameter, or they may be non-unique. For example, see the diagram for the Bratu problem on page 2 here:</div>
<div><br></div><div><a href="http://www.nada.kth.se/kurser/kth/2D1290/comp03_3.pdf">http://www.nada.kth.se/kurser/kth/2D1290/comp03_3.pdf</a></div>