ufl team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

On Wed, Jun 17, 2009 at 05:51:15PM +0200, Martin Sandve Alnæs wrote:
> On Wed, Jun 17, 2009 at 5:15 PM, Anders Logg<logg@xxxxxxxxx> wrote:
> > On Wed, Jun 17, 2009 at 03:32:03PM +0200, UFL wrote:
> >> One or more new changesets pushed to the primary ufl repository.
> >> A short summary of the last three changesets is included below.
> >>
> >> changeset:   908:ef256e35e417096ae9b9d3a7e915e27e6971ae3f
> >> tag:         tip
> >> user:        "Martin Sandve Alnæs <martinal@xxxxxxxxx>"
> >> date:        Wed Jun 17 15:32:01 2009 +0200
> >> files:       test/newtests/test_demos/test_demos.py test/newtests/test_elements/test_elements.py test/newtests/test_exprbasics/test_construction.py ufl/__init__.py ufl/exproperators.py ufl/finiteelement.py ufl/function.py
> >> description:
> >> Added ElementRestriction class with notation "Vr = V[dx(k)]".
> >
> > What does this mean? What is V?
> >
> 
> The restriction of a function space to a domain.
> Obviously the use of the measure "dx" is an
> abuse of concepts, but it's convenient to reuse it.
> 
> Consider:
> 
> V1 = FiniteElement("CG", cell, 1)
> V0 = FiniteElement("DG", cell, 0)
> V = V1 + V0[ds(2)]
> u, lamda = TrialFunctions(V)
> 
> Here lamda lives only on boundary 2.
> 
> Of course, this is useless without support in the rest of
> FEniCS, so it's only a proof of concept for input syntax.
> 
> Feel free to suggest alternative syntax and naming.
> 
> Martin

ok, I think it looks good. I was just confused by the "V" instead of
"element".

-- 
Anders

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