From: Willi =??B?TcO2aHJpbmc=?= on
Tammo wrote:


> Could you maybe suggest some literature references regarding the
> topic ?

>> > I am dealing with a numerical method to solve theHelmholtzequation.
>> > As far as I know it is a second order elliptic PDE. I would like to
>> > know, if the Maximum Principle (aka Boundary Maximum Principle) holds
>> > for theHelmholtzeq., or where can I find explicit literature about

I have seen that there are two slightly different articles in the english and german wikipedia. The references differ also. I have not looked into them, so I can't make recommendations.

Willi