Open Access
2007 Kolmogorov type inequalities for hypersingular integrals with homogeneous characteristic
Vladislav F. Babenko, Mariya S. Churilova
Banach J. Math. Anal. 1(1): 66-77 (2007). DOI: 10.15352/bjma/1240321556
Abstract

New sharp Kolmogorov type inequalities for hypersingular integrals with homogeneous characteristic of multivariate functions from Holder spaces are obtained. Proved inequalities are used to solve the Stechkin's problem on the best approximation of unbounded hypersingular integral operator by bounded ones on functional classes which are defined by a majorant of the modulus of continuity.

References

1.

V. V. Arestov, Inequalities for fractional derivatives on the half-line, Approximation theory, Banach Center Publication, PWN, Warsaw, 1979, 19–34. MR553753 0428.26010V. V. Arestov, Inequalities for fractional derivatives on the half-line, Approximation theory, Banach Center Publication, PWN, Warsaw, 1979, 19–34. MR553753 0428.26010

2.

V. V. Arestov, Approximation of unbounded operators by the bounded ones and relative extremal problems, Uspehi mat. nauk, 51 (1996), no. 6, 88–124 (in Russian). MR1440156V. V. Arestov, Approximation of unbounded operators by the bounded ones and relative extremal problems, Uspehi mat. nauk, 51 (1996), no. 6, 88–124 (in Russian). MR1440156

3.

V. V. Arestov and V. N. Gabushin, The best approximation of unbounded operators by the bounded ones, Izvestia VUZov. Mathematics, 1 (1995), 44–66 (in Russian).V. V. Arestov and V. N. Gabushin, The best approximation of unbounded operators by the bounded ones, Izvestia VUZov. Mathematics, 1 (1995), 44–66 (in Russian).

4.

V. F. Babenko, Researches of Dniepropetrovsk mathematicians on the inequalities for derivatives of periodic functions and their applications, Ukr. Mat. Zh., 52 (2000), no. 1, 9–29 (in Russian). MR1751623V. F. Babenko, Researches of Dniepropetrovsk mathematicians on the inequalities for derivatives of periodic functions and their applications, Ukr. Mat. Zh., 52 (2000), no. 1, 9–29 (in Russian). MR1751623

5.

V. F. Babenko, On sharp Kolmogorov type ineqaulities for bivariate functions, Dopovidi NAN Ukrainy, 5 (2000), 7–11 (in Russian). MR1833787V. F. Babenko, On sharp Kolmogorov type ineqaulities for bivariate functions, Dopovidi NAN Ukrainy, 5 (2000), 7–11 (in Russian). MR1833787

6.

V. F. Babenko and M. G. Churilova, On inequalities of Kolmogorov type for derivatives of fractional order, Bulletin of Dnepropetrovsk university. Mathematics, 6 (2001), 16–20 (in Russian).V. F. Babenko and M. G. Churilova, On inequalities of Kolmogorov type for derivatives of fractional order, Bulletin of Dnepropetrovsk university. Mathematics, 6 (2001), 16–20 (in Russian).

7.

V. F. Babenko and M. G. Churilova, On the Kolmogorov type inequalities for fractional derivatives, East Journal on Approximations, 8 (2002), no. 4, 437–446. MR1952509 05199970V. F. Babenko and M. G. Churilova, On the Kolmogorov type inequalities for fractional derivatives, East Journal on Approximations, 8 (2002), no. 4, 437–446. MR1952509 05199970

8.

V. F. Babenko, V. A. Kofanov and S. A. Pichugov, Multivariate inequalities of Kolmogorov type and their applications, in " Multivariate Approximation and Splines", G.Nurnberger, J.W.Schmidt, G.Walz (eds), Birkhauser, Basel, 1997. MR1484990V. F. Babenko, V. A. Kofanov and S. A. Pichugov, Multivariate inequalities of Kolmogorov type and their applications, in " Multivariate Approximation and Splines", G.Nurnberger, J.W.Schmidt, G.Walz (eds), Birkhauser, Basel, 1997. MR1484990

9.

V. F. Babenko, V. A. Kofanov and S. A. Pichugov, Inequalities of Kolmogorov type and some their applications in approximation theory, Rendiconti del Circolo Matematico di Palermo, Serie II, Suppl., 52 (1998), 223–237. MR1644551V. F. Babenko, V. A. Kofanov and S. A. Pichugov, Inequalities of Kolmogorov type and some their applications in approximation theory, Rendiconti del Circolo Matematico di Palermo, Serie II, Suppl., 52 (1998), 223–237. MR1644551

10.

V. F. Babenko, V. A. Kofanov and S. A. Pichugov, On the exact inequalities of Kolmogorov type and some of their applications, New Approaches in Nonlinear Analysis, Palm Harbor (USA) Hadronic Press, 1999, 9–50.V. F. Babenko, V. A. Kofanov and S. A. Pichugov, On the exact inequalities of Kolmogorov type and some of their applications, New Approaches in Nonlinear Analysis, Palm Harbor (USA) Hadronic Press, 1999, 9–50.

11.

V. F. Babenko, N. P. Korneichuk, V. A. Kofanov and S. A. Pichugov, Inequalities for derivatives and their applications, Naukova dumka, Kiev, 2003 (in Russian).V. F. Babenko, N. P. Korneichuk, V. A. Kofanov and S. A. Pichugov, Inequalities for derivatives and their applications, Naukova dumka, Kiev, 2003 (in Russian).

12.

V. F. Babenko, and S. A. Pichugov, Kolmogorov type inequalities for fractional derivatives of H$\ddot\rm o$lder functions of two variables, East Journal on Approximations (to appear).V. F. Babenko, and S. A. Pichugov, Kolmogorov type inequalities for fractional derivatives of H$\ddot\rm o$lder functions of two variables, East Journal on Approximations (to appear).

13.

A. P. Buslaev and V. M. Tikhomirov, On inequalities for derivatives in multivariate case, Mat. zametki, 25 (1979), no. 1, 59–74 (in Russian). MR527000A. P. Buslaev and V. M. Tikhomirov, On inequalities for derivatives in multivariate case, Mat. zametki, 25 (1979), no. 1, 59–74 (in Russian). MR527000

14.

S. P. Geisberg, Generalization of Hadamard's inequality, Sb. nauchn. tr. Leningr. meh. inst., 50 (1965), 42–54 (in Russian). MR241579S. P. Geisberg, Generalization of Hadamard's inequality, Sb. nauchn. tr. Leningr. meh. inst., 50 (1965), 42–54 (in Russian). MR241579

15.

A. N. Kolmogorov, On inequalities between the upper bounds of the successive derivatives of an arbitrary function on an infinite interval, Uchenye zapiski MGU. Math., 30 (1939), no. 3, 3–13. (See also Kolmogorov A.N., Selected works. Mathematics, mechanics, Nauka, Moskow, 1985, 252–263.) (In Russian.)A. N. Kolmogorov, On inequalities between the upper bounds of the successive derivatives of an arbitrary function on an infinite interval, Uchenye zapiski MGU. Math., 30 (1939), no. 3, 3–13. (See also Kolmogorov A.N., Selected works. Mathematics, mechanics, Nauka, Moskow, 1985, 252–263.) (In Russian.)

16.

V. N. Konovalov, Exact inequalities for norms of the functions, thrid and fourth mixed derivatives, Mat. zametki, 23 (1978), no. 1, 67–78 (in Russian). MR480912V. N. Konovalov, Exact inequalities for norms of the functions, thrid and fourth mixed derivatives, Mat. zametki, 23 (1978), no. 1, 67–78 (in Russian). MR480912

17.

N. P. Korneichuk, V. F. Babenko and A. A. Ligun, Extremal properties of polynomials and splines, Naukova dumka, Kiev, 1992 (in Russian). MR1286492N. P. Korneichuk, V. F. Babenko and A. A. Ligun, Extremal properties of polynomials and splines, Naukova dumka, Kiev, 1992 (in Russian). MR1286492

18.

G. G. Magaril-Il'jaev and V. M. Tihomirov, On the Kolmogorov inequality for fractional derivatives on the half-line, Analysis Mathematica, 7 (1981), no. 1, 37–47. MR621166 10.1007/BF02102723 0481.46017G. G. Magaril-Il'jaev and V. M. Tihomirov, On the Kolmogorov inequality for fractional derivatives on the half-line, Analysis Mathematica, 7 (1981), no. 1, 37–47. MR621166 10.1007/BF02102723 0481.46017

19.

A. Marchaud, Sur les deriv$\acutee$es et sur les diff$\acutee$rences des fonctions de variables r$\acutee$elles, J. Math. Pures et Appl., 6 (1927), 337–425.A. Marchaud, Sur les deriv$\acutee$es et sur les diff$\acutee$rences des fonctions de variables r$\acutee$elles, J. Math. Pures et Appl., 6 (1927), 337–425.

20.

B. A. Rozenfel'd, Multydimensional spaces, Nauka, Moskow, 1966 (in Russian).B. A. Rozenfel'd, Multydimensional spaces, Nauka, Moskow, 1966 (in Russian).

21.

S. G. Samko, A. A. Kilbas, O. I. Marichev, Itegrals and derivatives of fractional order and their applications, Minsk, 1987 (in Russian).S. G. Samko, A. A. Kilbas, O. I. Marichev, Itegrals and derivatives of fractional order and their applications, Minsk, 1987 (in Russian).

22.

S. B. Stechkin, Best approximation of linear operators, Mat. zametki, 1 (1967), no. 2, 137–148 (in Russian). MR211169S. B. Stechkin, Best approximation of linear operators, Mat. zametki, 1 (1967), no. 2, 137–148 (in Russian). MR211169

23.

E. M. Stein, Functions of exponential type, Ann. Math., 65 (1957), no. 3, 582–592. MR85342 10.2307/1970066E. M. Stein, Functions of exponential type, Ann. Math., 65 (1957), no. 3, 582–592. MR85342 10.2307/1970066

24.

O. A. Timoshin, Sharp inequalities between norms of partial derivatives of second and third order, Doklady RAN, 344 (1995), no. 1, 20–22 (in Russian). MR1361022O. A. Timoshin, Sharp inequalities between norms of partial derivatives of second and third order, Doklady RAN, 344 (1995), no. 1, 20–22 (in Russian). MR1361022
Copyright © 2007 Tusi Mathematical Research Group
Vladislav F. Babenko and Mariya S. Churilova "Kolmogorov type inequalities for hypersingular integrals with homogeneous characteristic," Banach Journal of Mathematical Analysis 1(1), 66-77, (2007). https://doi.org/10.15352/bjma/1240321556
Published: 2007
Vol.1 • No. 1 • 2007
Back to Top