> Is there anything telling how the bubble functions are defined?
>
> For example with the Mini example:
>
> P1 = VectorElement("Lagrange", "triangle", 1)
> B = VectorElement("Bubble", "triangle", 3)
> Q = FiniteElement("Lagrange", "triangle", 1)
> Mini = (P1 + B) * Q
>
> Does B consist of 3 bubble functions in some symmetric pattern in the
> element?
>The bubble functions are the bubble functions ;) In the above example, B is the span of the piecewise continuous cubic functions that are zero on the boundary of each triangle. (1 per triangle for a FiniteElement and hence 2 per triangle for a VectorElement of value dimension 2.) In general, the bubble finite element of degree k is the span of the interior basis functions of CG_k. -- Marie _______________________________________________ Mailing list: https://launchpad.net/~ffc Post to : ffc@lists.launchpad.net Unsubscribe : https://launchpad.net/~ffc More help : https://help.launchpad.net/ListHelp
