Campuses:

adaptive methods

Thursday, December 2, 2010 - 9:45am - 10:30am
Andreas Veeser (Università di Milano)
The quality of a finite element solution hinges in particular on the approximation properties of the finite element space. In the first part of this talk we will consider the approximation of the gradient of a target function by continuous piecewise polynomials over a simplicial, 'shape-regular' mesh and prove the following result: the global best approximation error is equivalent to an appropriate sum in terms of the local best approximation errors on the elements, which do not overlap.
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