Zobrazeno 1 - 9
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pro vyhledávání: '"Beyaz Basak Koca"'
Autor:
Beyaz Basak Koca, Nazim Sadik
Publikováno v:
Journal of Function Spaces and Applications, Vol 2012 (2012)
We study the structure C∗-algebras generated by a system of unilateral weighted shifts. Finally the obtained results are applied to a class of integral equations.
Externí odkaz:
https://doaj.org/article/171750211d38499dab0abab86797e332
Autor:
Uǧur Gül, Beyaz Basak Koca
Publikováno v:
Journal of Mathematical Analysis and Applications. 477:163-173
In this work we give a Fredholm criteria for the operators in the C ⁎ -algebra generated by certain Toeplitz operators and Fourier multipliers acting on the Hardy space of the bidisc. With help of the obtained results we also completely characteriz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e38dfcf6a39f4ad901051ff2fa856faa
https://doi.org/10.1016/j.jmaa.2019.04.023
https://doi.org/10.1016/j.jmaa.2019.04.023
Autor:
Nazim Sadik, Beyaz Basak Koca
Publikováno v:
Volume: 43, Issue: 2 759-764
Turkish Journal of Mathematics
Turkish Journal of Mathematics
In this paper, we give a complete characterization of singly generated invariant subspaces in the Hardy space on the unit ball. Then we construct a singly generated invariant subspace that cannot be generated by a single inner function, contrary to t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::376dc019bbc560d6e00d819a5353ee56
https://doi.org/10.3906/mat-1810-65
https://doi.org/10.3906/mat-1810-65
Autor:
Beyaz Basak Koca
Publikováno v:
Archiv der Mathematik. 107:265-270
We study the structure of the C*-algebra C*(A) generated by a system A of unilateral weighted shifts when the operator algebra generated by A is the polydisc algebra. With help of the obtained results, we present a necessary and sufficient condition
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8723f37abdb9545883697478f3dd54b9
https://doi.org/10.1007/s00013-016-0950-y
https://doi.org/10.1007/s00013-016-0950-y
Autor:
Nazim Sadik, Beyaz Basak Koca
Publikováno v:
Volume: 68, Issue: 1 871-882
Communications Faculty of Sciences University of Ankara Series A1 Mathematics and Statistics
Communications Faculty of Sciences University of Ankara Series A1 Mathematics and Statistics
In this paper we present a new method for solving general singular equations of normal type. As an application of this method, we give a solution for a class of convolution-type integral equations
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1ba21118bfe650a125d3d1bd112fb046
https://dergipark.org.tr/tr/pub/cfsuasmas/issue/36517/484955
https://dergipark.org.tr/tr/pub/cfsuasmas/issue/36517/484955
Autor:
Beyaz Basak Koca, Uğur Gül
In this paper we prove an invertibility criterion for certain operators which is given as a linear algebraic combination of Toeplitz operators and Fourier multipliers acting on the Hardy space of the unit disc. Very similar to the case of Toeplitz op
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a1432dc0c0f5f207d6fd41129febd31
http://arxiv.org/abs/1705.04342
http://arxiv.org/abs/1705.04342
Autor:
Beyaz Basak Koca
It is known that the structure of invariant subspaces of the Hardy space $H^2(\mathbb D^n)$ on the polydisc $\mathbb{D}^n$ is very complicated; hence, we need good examples help us to understand the structure of invariant subspaces of $H^2(\mathbb D^
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::00e4d00b19b596dacee29a555648ee77
http://arxiv.org/abs/1603.02725
http://arxiv.org/abs/1603.02725
Autor:
Nazim Sadik, Beyaz Basak Koca
Publikováno v:
Journal of Function Spaces and Applications. 2012:1-5
We study the structureC∗-algebras generated by a system of unilateral weighted shifts. Finally the obtained results are applied to a class of integral equations.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50bfe8801a3ae48a908fc7d168b74b7a
https://doi.org/10.1155/2012/393710
https://doi.org/10.1155/2012/393710
Autor:
Nazim Sadik, Beyaz Basak Koca
In this study, we partially answer the question left open in Rudin's book "Function theory in polydiscs" on the structure of invariant subspaces of the Hardy space $H^2(U^n)$ on the polydisc $U^n$. We completely describe all invariant subspaces gener
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ddc85a93954f480a761c8e11b1d7069