an encyclopedia of finite element definitions
Degree 1 enriched Galerkin on a quadrilateral
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- \(R\) is the reference quadrilateral. The following numbering of the subentities of the reference is used:
- Basis functions:
\(\displaystyle \phi_{0} = x y - x - y + 1\)
\(\displaystyle \phi_{1} = x \left(1 - y\right)\)
\(\displaystyle \phi_{2} = y \left(1 - x\right)\)
\(\displaystyle \phi_{3} = x y\)
\(\displaystyle \phi_{4} = 1\)