Approximation by solutions of general boundary value problems for elliptic equations of arbitrary order
Uwe Hamann, Günther Wildenhain (1987)
Banach Center Publications
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Displaying similar documents to “An inverse approximation theorem on subsets of elliptic curves.”
Approximation by solutions of general boundary value problems for elliptic equations of arbitrary order
On an approximation of function and its derivatives.
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Greedy Algorithms for Adaptive Approximation
Albert Cohen (2009)
Bollettino dell'Unione Matematica Italiana
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We discuss the performances of greedy algorithms for two problems of numerical approximation. The first one is the best approximation of an arbitrary function by an N-terms linear combination of simple functions adaptively picked within a large dictionary. The second one is the approximation of an arbitrary function by a piecewise polynomial function on an optimally adapted triangulation of cardinality N. Performance is measured in terms of convergence rate with respect to the number...