[petsc-users] Modified Taylor-Hood elements with piece-wise constant pressure for Stokes equation

[Lawrence Mitchell]

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On 02/06/15 13:37, Matthew Knepley wrote:

> 
>> This construction appears to throw away unisolvence.

Yes, it's normally used for building spaces where the resulting
enriched space is unisolvent (e.g. MINI).

>> In the Boffi paper, they use QR to solve the pressure Laplacian.
>> This would put a damper on me using the method.

I guess you could use some kind of interior penalty scheme (as normal
for DG laplacians).

Lawrence
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