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Localizing the Lozinski-Harshiladze theorem on projections into the space of trigonometric polynomials

✍ Scribed by G. Halász


Publisher
Akadmiai Kiad
Year
1977
Tongue
English
Weight
521 KB
Volume
30
Category
Article
ISSN
1588-2632

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Explicit a priori error bounds for the approximation by the H 1 0 -projection into piecewise polynomial spaces are given. In particular, for the quadratic approximation, the optimal constant is derived, and a nearly optimal value for the cubic is obtained. These constants play an important role in t