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["Garth N. Wells" <gnw20@xxxxxxxxx>]

Mehdi Nikbakht wrote:
> Hello,
>
> I am working with mixed-mixed element. Assume,
>
> P2_c = VectorElement("Lagrange", triangle, 2)
> P1 = FiniteElement("Lagrange", triangle, 1)
>
> P2 = P2_c + P2_c
> TH = P2 + P1
>
> (v, p) = TestFunctions(TH)
>
> Where v and p are the test functions corresponding to P2 and P1 respectively.
> However, I want to be able to use a syntax like this,
>
> (v, u, p) = TestFunction(TH)
>
> Which allows me to have access to the test function of each sub element. How can
> I do this by UFL?

Take at look at the documentation (Section 2.2.6).

Garth

> Mehdi
>
>
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