how can solve this equation
I have to a equation , but I don't known how to solve it stable.
partial h/partial t= Grad. {1/3 h^3 Grad[gamma chi(h) Grad. (Grad h/ sqrt(1+(Grad h)^2))+ chi'(h)(gamma 1/sqrt(1+(Grad h)^2))]} Is there anyone can help me , Thank you very much 
Re: how can solve this equation
Could you make it ps or pdf file using latex, so that easy to look at the equation. It is hard to visualize the equation unless I rewrite it again.
You can post it on your website and put the link here. Kim 
Re: how can solve this equation
Thanks a lot, But I have no my own website.
Can I set pdf file to your email box? 
Re: how can solve this equation
Sure, no problem. And if you don't mind I will put it on my website so that others can look at and give you ideas.
Kim 
Re: how can solve this equation
OK.

Re: how can solve this equation
Will appreciate if you can email me the equation. Thanks

http://math.uci.edu/~jskim/web.pdf

Re: how can solve this equation
Your problem statement describes h(x), ie. a 1D problem.
But, your equation is full of Nabla operators, implying a vector field (2d or 3d), as it seems pointless using nablas for only a 1D problem. If it is a 1D problem, then the reduction to a simple PDE is straightforward, if h(x,y,z), then the expansion will become more complex... then I would have an issue with the sqr(1+(nabla h )^2) term... A few thoughts... In a 1D problem, I would initially be inclined to try a change of variable to allow simpler solution & substitute back as required. diaw... 
Re: http://math.uci.edu/~jskim/web.pdf
What is h(X) the profile of? What variable?

Re: how can solve this equation
Actually, here h is a Monge representation, h(x,y).
And I just want to solve this equation in 1D. Could you explain it in details/ Thany you ! 
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