Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Maria Tjani"'
Publikováno v:
Proceedings of the American Mathematical Society. 148:2117-2127
Let φ \varphi be an analytic self-map of the open unit disk D \mathbb {D} . We study the complex symmetry of composition operators C φ C_\varphi on weighted Hardy spaces induced by a bounded sequence. For any analytic self-map of D \mathbb {D} that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::062b97ef622adc9411921b282ff78255
https://doi.org/10.1090/proc/14909
https://doi.org/10.1090/proc/14909
Autor:
Maria Tjani, Kevser Erdem
Publikováno v:
Complex Analysis and Operator Theory. 15
We employ a new reverse Carleson type condition and define a new sampling condition to study closed range composition operators on BMOA. We provide necessary and also sufficient conditions for a composition operator to be closed range on BMOA. We sho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::97f433489fe7b8336b4016507f220a9c
https://doi.org/10.1007/s11785-021-01104-8
https://doi.org/10.1007/s11785-021-01104-8
Autor:
Flavia Colonna, Maria Tjani
Publikováno v:
Problems and Recent Methods in Operator Theory. :75-95
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a5d1a848b30bc94c39c2e9de42904fdb
https://doi.org/10.1090/conm/687/13790
https://doi.org/10.1090/conm/687/13790
Autor:
Maria Tjani, Flavia Colonna
Publikováno v:
Journal of Mathematical Analysis and Applications. 434:93-124
In this work, we characterize the bounded and compact weighted composition operators from a large class of Banach space of analytic functions on the open unit disk into weighted Banach spaces, determine the operator norm exactly and obtain estimates
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a6f97107a1d1ba456e4216858f135b9
https://doi.org/10.1016/j.jmaa.2015.08.073
https://doi.org/10.1016/j.jmaa.2015.08.073
Autor:
Melissa Shabazz, Maria Tjani
Publikováno v:
Complex Variables and Elliptic Equations. 61:761-771
Given , , let denote the Besov type space of analytic functions on the unit disk . Allen, Heller and Pons have shown that the isometries among composition operators on certain Besov spaces, , are induced by rotations. We extend this to all Besov spac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d9e169adcbebd434e33451090d51014
https://doi.org/10.1080/17476933.2015.1118471
https://doi.org/10.1080/17476933.2015.1118471
Autor:
Pratibha G. Ghatage, Maria Tjani
Publikováno v:
Journal of Mathematical Analysis and Applications. 431:841-866
We show that a Carleson measure satisfies the reverse Carleson condition if and only if its Berezin symbol is bounded below on the unit disk D . We provide new necessary and sufficient conditions for the composition operator to have closed range on t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da84095e8fd43e14250ebac7d85d3ce3
https://doi.org/10.1016/j.jmaa.2015.06.009
https://doi.org/10.1016/j.jmaa.2015.06.009
Autor:
Flavia Colonna, Maria Tjani
Publikováno v:
Mediterranean Journal of Mathematics. 12:1357-1375
In this work, we provide an approximation of the essential norm of the weighted composition operators acting on a Hilbert function space and mapping into a Zygmund-type space, and give characterizations of the boundedness and compactness of such oper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc5ca81c37afc93dede3da8f94e3c89c
https://doi.org/10.1007/s00009-015-0560-0
https://doi.org/10.1007/s00009-015-0560-0
Autor:
Maria Tjani, Flavia Colonna
Publikováno v:
Journal of Mathematical Analysis and Applications. 402:594-611
Let μ denote a positive continuous function on the open unit disk D . In this work, we characterize the bounded weighted composition operators from the analytic Besov spaces B p ( 1 ≤ p ∞ ) into the weighted-type space H μ ∞ consisting of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c5d5cc18dc3883a4624ab6dd1373fdd
https://doi.org/10.1016/j.jmaa.2013.01.037
https://doi.org/10.1016/j.jmaa.2013.01.037
Publikováno v:
Integral Equations and Operator Theory. 76:131-143
We thank Nina Zorboska for pointing out an error in the proof of [2, Proposition 3.1]; a faux pas in our application of Julia’s Theorem. Indeed, we find that Proposition 3.1 does not hold in general (see Example 2.4 in this erratum). This impacts t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9811524de5af41dadf94f9b890a9e1d1
https://doi.org/10.1007/s00020-013-2043-7
https://doi.org/10.1007/s00020-013-2043-7
Autor:
Maria Tjani
Publikováno v:
Complex Analysis and Operator Theory. 8:189-212
Let $$\varphi $$ be a holomorphic self-map of the unit disk $$\mathbb D $$ . Necessary and sufficient conditions for a closed range composition operator $$C_\varphi $$ on Besov spaces $$B_p$$ and more generally on Besov type spaces $$B_{p, \alpha }$$
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef3c4c150c6fdd39f64952e539f276ac
https://doi.org/10.1007/s11785-013-0286-6
https://doi.org/10.1007/s11785-013-0286-6