Hi Dave,

On Wed, Jun 18, 2008 at 5:27 AM, David Knezevic <[EMAIL PROTECTED]> wrote:
>
> The report by Walkington, "Quadrature on Simplices of Arbitrary
> Dimension" has a quadrature rule on tets that is exact for polynomials
> of degree 5, and has 15 points (i.e., see Table 2.1, but note that the
> 15th point is the w_0 point), but it looks like it's not the quadrature

Did you see where w_0 is given for this degree 5 tet rule?  I suppose
I can figure it out by summing the other 14 and subtracting from the
volume...

Anyway, I agree with you: this does appear to be different from the
15-point rule in the library.  If you haven't already, I think I will
take a closer look at this one's accuracy claims.

> On a related note, I've been using the 4th order quadrature rule on tets
> with 11 quadrature points, does anyone know where that one came from?

No idea...I guess we could've used a little more documentation when
writing these!

-- 
John

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