Re: [eigen] help: eigen cann't solve this simple ax correctly, but Arma

Re: [eigen] help: eigen cann't solve this simple ax correctly, but Armadillo c++ can

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To: eigen@xxxxxxxxxxxxxxxxxxx <eigen@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [eigen] help: eigen cann't solve this simple ax correctly, but Armadillo c++ can
From: ztdepyahoo <ztdepyahoo@xxxxxxxxx>
Date: Tue, 8 Sep 2020 22:35:25 +0800
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LOL, yes. in the spectral method. we often use it .

	ztdepyahoo
ztdepyahoo@xxxxxxxxx

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On 9/8/2020 22:18，Janek Kozicki (yade)<jkozicki-yade@xxxxxxxxx> wrote：

ztdepyahoo said: (by the date of Tue, 8 Sep 2020 07:31:30 +0800)

…… exact solution of "cos(6*Pi*x)*cos(6*Pi*y)"

Wow, it looks like this is a nice test case with an exact solution.
Maybe it's worthwhile to add this to eigen tests?

Janek

--
Janek Kozicki, PhD. DSc. Arch. Assoc. Prof.
Gdańsk University of Technology
Faculty of Applied Physics and Mathematics
Department of Theoretical Physics and Quantum Information
--
http://yade-dem.org/
http://pg.edu.pl/jkozicki (click English flag on top right)

References:
- [eigen] help: eigen cann't solve this simple ax correctly, but Armadillo c++ can
  - From: ztdepyahoo
- Re: [eigen] help: eigen cann't solve this simple ax correctly, but Armadillo c++ can
  - From: Adrien Escande
- Re: [eigen] help: eigen cann't solve this simple ax correctly, but Armadillo c++ can
  - From: ztdepyahoo
- Re: [eigen] help: eigen cann't solve this simple ax correctly, but Armadillo c++ can
  - From: Janek Kozicki (yade)

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