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Re: Struggling with list element assignment in functions

• To: mathgroup at smc.vnet.net
• Subject: [mg45706] Re: Struggling with list element assignment in functions
• From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
• Date: Wed, 21 Jan 2004 04:54:51 -0500 (EST)
• Organization: Universitaet Leipzig
• References: <bu8gs2$ak5$1@smc.vnet.net> <buiv2s$qth$1@smc.vnet.net>
• Reply-to: kuska at informatik.uni-leipzig.de
• Sender: owner-wri-mathgroup at wolfram.com

Hi,

> For your information, I am hoping to build a rapid development tool
> for finite difference development on regular grids. I would like to be
> able to create rules to transform a set of Mathematica statements
> representing 1) a partial differential equation 2) a time differencing
> scheme 3) a space differencing scheme into two products: A) an
> implementation and B) a linear stability analysis. Ideally there would
> also be 4) input of various boundary conditions and C) output in the
> form of reasonably efficient C code.

and Mathematica 5.0.x NDSolve[] has already the steps 1)--3)
implemented *and* it call hardware optimized BLAS/LAPACK
functions to solve the sparse system ...

Why reinvent the weel ??

Regards
  Jens