지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
In [6], it was shown that hyponormality for Toeplitz operators with polynomial symbols can be reduced to classical Schur's algorithm in function theory. In [6], Zhu has also given the explicit values of the Schur's functions [기호]_0, [기호]_1 and [기호]_2. Here we explicitly evaluate the Schur's function [기호]_3. Using this value we find necessary and sufficient conditions under which the Toeplitz operator T_φ is hyponormal, where φ is a trigonometric polynomial given by φ (z)=[수식] and satisfies the condition [수식]. Finally we illustrate the easy applicability of the derived results with a few examples.
목차
등록된 정보가 없습니다.
참고문헌 (7)
참고문헌 신청
C. C. Cowen / 1988 / Hyponormality of Toeplitz operators / Proc. Amer. Math. Soc 103 (3) : 809 ~ 812
D. R. Farenick / 1996 / Hyponormality and spectra of Toeplitz operators / Trans. Amer. Math. Soc 348 (10) : 4153 ~ 4174
I. S. Hwang / 2004 / Hyponormality of Toeplitz operators with polynomial and symmetric-type symbols / Integral Equations Operator Theory 50 (3) : 363 ~ 373
K. Zhu / 1995 / Hyponormal Toeplitz operators with polynomial symbols / Integral Equations Op-erator Theory 21 (3) : 376 ~ 381
T. Ito / 1972 / Subnormality and quasinormality of Toeplitz operators / Proc. Amer. Math. Soc 34 : 157 ~ 164
D. R. Farenick / 1996 / Hyponormality and spectra of Toeplitz operators / Trans. Amer. Math. Soc 348 (10) : 4153 ~ 4174
I. S. Hwang / 2004 / Hyponormality of Toeplitz operators with polynomial and symmetric-type symbols / Integral Equations Operator Theory 50 (3) : 363 ~ 373
K. Zhu / 1995 / Hyponormal Toeplitz operators with polynomial symbols / Integral Equations Op-erator Theory 21 (3) : 376 ~ 381
T. Ito / 1972 / Subnormality and quasinormality of Toeplitz operators / Proc. Amer. Math. Soc 34 : 157 ~ 164
이 논문의 저자 정보
최근 본 자료
댓글(0)
0