fenics team mailing list archive

[Kent Andre <kent-and@xxxxxxxxx>]

I am in favour of a(u,v), simply because it is the way I am used to 
read and write it. Also, very few users need to care about this due to
the high-level syntax in UFL which implicitly takes care of the
ordering.

Kent

On Mon, 2010-05-03 at 09:23 +0200, Anders Logg wrote:
> There doesn't seem to be any overwhelming pressure to change the
> notation from a(v, u) to a(u, v). More opinions?
> 
> In summary, the options are:
> 
> 1. Keep a(v, u) so that A_ij = a(phi_i, phi_j)
> 
> 2. Change to a(u, v) and do some kind of swapping of indices
> 
> 3. Change to a(u, v) and change to A_ij = a(phi_i, phi_j)
> 
> Option 3 seems unreasonable (although one could argue this is where
> the problem lies, columns should be numbered first).
> 
> --
> Anders
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