Abstract
Interrelations between mixed fractional moduli of smoothness considered in the metrics of L p and L ∞ are studied on the paper.
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P. L. Ul’yanov, “Embedding Theorems and Relations Between the Best Approximations (Moduli of Continuity) in Different Metrics,” Matem. Sborn. 81(123) (1), 104 (1970).
P. L. Ul’yanov, “Embedding of Some Classes of Functions H p ω,” Izvestiya Akad. Nauk SSSR 32 (3), 649 (1968).
M. K. Potapov, B. V. Simonov, and S. Yu. Tikhonov, “One Inequality of P. L. Ul’yanov,” Vestn. Mosk. Univ., Matem. Mekhan., No 3, 33 (2008).
M. Potapov, B. Simonov, and S. Tikhonov, “Mixed Moduli of Smoothness in L p, 1 < p < ∞. A survey,” Surveys Approx. Theory 8, 1 (2013).
M. K. Potapov, B. V. Simonov, and S. Yu. Tikhonov, “Moduli of Smoothness of Fractional Order from the Spaces L p, 1 < p < ∞,” in Modern Problems of Mathematics and Mechanics. Proc. Mech. Math. Faculty of Moscow State Univ. Vol. VI: Mathematics. Issue 1 (to 105th anniversary of S. M. Nikol’skii) (Moscow State Univ., Moscow, 2011), pp. 90–110.
M. K. Potapov and B. V. Simonov, “Analogues of Ul’yanov’s Inequality for Fractional Moduli of Smoothness,” in Modern Problems of Mathematics and Mechanics. Proc. Mech. Math. Faculty of Moscow State Univ. Vol. VIII: Mathematics. Issue 1 (to 103th anniversary of N. N. Luzin and 85th anniversary of P. L. Ul’yanov) (Moscow State Univ., Moscow, 2013), pp. 62–70.
M. K. Potapov and B. V. Simonov, “Connection between Moduli of Smoothness in the Metrics of L p and C,” Vestn. Mosk. Univ., Matem. Mekhan., No 1, 7 (2015).
M. K. Potapov and B. V. Simonov, “Moduli of Smoothness of Positive Orders of Functions from the Spaces L p, 1 ≤ p ≤ ∞,” in Modern Problems of Mathematics and Mechanics, Vol. VII. Mathematics, Mechanics. Issue 1. (To 190th anniversary of P. L. Chebyshev) (Moscow State Univ., Moscow, 2011), pp. 100–104.
V. I. Kolyada, “Relations Between Moduli of Continuity in Different Metrics,” Trudy Matem. Inst. Acad. Nauk SSSR 181, 117 (1988).
Z. Ditzian and S. Tikhonov, “Ul’yanov and Nikol’skii-Type Inequalities,” J. Approx. Theory 133, 100 (2005).
B. Simonov and S. Tikhonov, “Sharp Ul’yanov-Type Inequalities Using Fractional Smoothness,” J. Approx. Theory 162 (9), 1654 (2010).
W. Trebels, “Inequalities for Moduli of Smoothness Versus Embeddings of Function Spaces,” Arch. Math. 94, 155 (2010).
M. K. Potapov, B. V. Simonov, and S. Yu. Tikhonov, “Constructive Characteristics of Mixed Moduli of Smoothness of Positive Orders,” in Proc. 8th Congr. Int. Society for Analysis, its Applications, and Computation (August 22–27, 2011). Vol. 2. (People’s Friendship University of Russia, Moscow, 2012), pp. 314–325.
Simonov B.V., Tikhonov S.Yu. “Embedding Theorems in the Constructive Approximation Theory,” Matem. Sborn. 199 (9), 107 (2008).
O. V. Besov, V. P. Il’in, and S. M. Nikol’skii, Integral Representation of Functions and Embedding Theorems (Nauka, Moscow, 1975) [in Russian].
M. K. Potapov, “Approximation by Angle,” in Proc. Conf. in Constructive Theory of Functions (Hungarian Acad. Sci., Budapest, 1971), pp. 371–399.
M. K. Potapov, “Embedding of Classes of Functions with Dominant Mixed Modulus of Smoothness,” Trudy Matem Inst. Akad. Nauk SSSR 131, 199 (1974).
M. K. Potapov, B. V. Simonov, and S. Yu. Tikhonov, Moduli of Smoothness of Fractional orders. (Moscow State Univ., Moscow 2014) [in Russian].
A. A. Konushkov, “Best Approximation by Trigonometric Polynomials and Fourier Coefficients,” Matem. Sborn. 44 (86) (1), 53 (1958).
R. Taberski, “Differences, Moduli and Derivatives of Fractional Orders,” Comment. Math. Prace Mat. 19 (2), 389 (1976/1977).
M. K. Potapov, B. V. Simonov, and S. Yu. Tikhonov, Moduli of Smoothness of Fractional orders. Part II. (Moscow State Univ., Moscow, 2015) [in Russian].
M. K. Potapov, B. V. Simonov, and S. Yu. Tikhonov, Fractional Moduli of Smoothness. (Maks Press, Moscow, 2016) [in Russian].
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Original Russian Text © M.K. Potapov and B.V. Simonov, 2017, published in Vestnik Moskovskogo Universiteta, Matematika. Mekhanika, 2017, Vol. 72, No. 3, pp. 21–35.
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Potapov, M.K., Simonov, B.V. Interrelations between mixed moduli of smoothness in metrics of L p and L ∞ . Moscow Univ. Math. Bull. 72, 107–120 (2017). https://doi.org/10.3103/S0027132217030044
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DOI: https://doi.org/10.3103/S0027132217030044