Chebyshev Splines and Kolmogorov Inequalities - Operator Theory: Advances and Applications 105 (Paperback)
  • Chebyshev Splines and Kolmogorov Inequalities - Operator Theory: Advances and Applications 105 (Paperback)
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Chebyshev Splines and Kolmogorov Inequalities - Operator Theory: Advances and Applications 105 (Paperback)

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Paperback 210 Pages / Published: 03/10/2013
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Since the introduction of the functional classes HW (lI) and WT HW (lI) and their peri- odic analogs Hw (1I') and ~ (1I'), defined by a concave majorant w of functions and their rth derivatives, many researchers have contributed to the area of ex- tremal problems and approximation of these classes by algebraic or trigonometric polynomials, splines and other finite dimensional subspaces. In many extremal problems in the Sobolev class W~ (lI) and its periodic ana- log W~ (1I') an exceptional role belongs to the polynomial perfect splines of degree r, i.e. the functions whose rth derivative takes on the values -1 and 1 on the neighbor- ing intervals. For example, these functions turn out to be extremal in such problems of approximation theory as the best approximation of classes W~ (lI) and W~ (1I') by finite-dimensional subspaces and the problem of sharp Kolmogorov inequalities for intermediate derivatives of functions from W~. Therefore, no advance in the T exact and complete solution of problems in the nonperiodic classes W HW could be expected without finding analogs of polynomial perfect splines in WT HW .

Publisher: Springer Basel
ISBN: 9783034897815
Number of pages: 210
Weight: 401 g
Dimensions: 244 x 170 x 12 mm
Edition: Softcover reprint of the original 1st ed. 199

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