Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Bijan Ahmadi Kakavandi"'
Publikováno v:
Acta Mathematica Scientia. 42:1018-1034
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::54f65aac523ede32d8f6b89459718279
https://doi.org/10.1007/s10473-022-0312-8
https://doi.org/10.1007/s10473-022-0312-8
Publikováno v:
International Studies in the Philosophy of Science. 35:171-188
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a50c8ba3c6c0eef38dd3ee0854eec06
https://doi.org/10.1080/02698595.2022.2144457
https://doi.org/10.1080/02698595.2022.2144457
Autor:
Elham Nobari, Bijan Ahmadi Kakavandi
Publikováno v:
Linear and Multilinear Algebra. 70:7093-7114
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::877ee401ae6f6ad5da30c89e36e40a46
https://doi.org/10.1080/03081087.2021.1983510
https://doi.org/10.1080/03081087.2021.1983510
Publikováno v:
Quarterly of Applied Mathematics. 79:431-443
A classical theorem from Brown and Halmos asserts that a Toeplitz operator T ( f ) T(f) is normal if and only if the range of its generator f : T → C f:\mathbb {T}\rightarrow \mathbb {C} is included in a straight line. In this paper, discretizing f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1cb074f81d1d3705bfac1f854c80b5c
https://doi.org/10.1090/qam/1589
https://doi.org/10.1090/qam/1589
Autor:
Bijan Ahmadi Kakavandi, Elham Nobari
Publikováno v:
Quarterly of Applied Mathematics. 77:655-669
In this paper, we study the Wasserstein barycenter of finitely many Borel probability measures on P n \mathbb {P}_{n} , the Riemannian manifold of all n × n n\times n real positive definite matrices as well as its associated dual problem, namely the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3a7c371b44d99295a3ae4644bb3a889
https://doi.org/10.1090/qam/1535
https://doi.org/10.1090/qam/1535
Autor:
Bijan Ahmadi Kakavandi
Publikováno v:
Quaestiones Mathematicae; Vol 42, No 10 (2019); 1301–1311
In this paper, we propose a unified approach to prove the existence and uniqueness of the solutions of some of the evolution equations in combinatorial graphs. Our approach is based on the theory of strongly continuous semigroups in Banach spaces. Se
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::25a098391292beedf940665065dd2714
https://doi.org/10.2989/16073606.2018.1515122
https://doi.org/10.2989/16073606.2018.1515122
Autor:
Bijan Ahmadi Kakavandi, Elham Nobari
Publikováno v:
Linear Algebra and its Applications. 548:189-202
Using the symbol functions and their associated Fourier series, we introduce a new definition of geometric mean for all positive semi-definite Toeplitz matrices and positive semi-definite block-Toeplitz matrices with Toeplitz structured blocks (TBBT)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23929a38dc1452a013f62aed117beada
https://doi.org/10.1016/j.laa.2018.03.014
https://doi.org/10.1016/j.laa.2018.03.014
Autor:
Bijan Ahmadi Kakavandi
Publikováno v:
Journal of Fixed Point Theory and Applications. 17:717-731
We generalize some theorems for continuous representation of an amenable semitopological semigroup S as nonexpansive maps on Hilbert spaces to complete CAT(0) spaces, i.e., Hadamard spaces. For proper Hadamard space, we prove the convergence of asymp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b3418b366192cb00af8ff96ce7e1193d
https://doi.org/10.1007/s11784-015-0262-z
https://doi.org/10.1007/s11784-015-0262-z
Autor:
Bijan Ahmadi Kakavandi
Publikováno v:
Proceedings of the American Mathematical Society. 141:1029-1039
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::279ddec3103c8510e8d42fd7f1aa38b8
https://doi.org/10.1090/s0002-9939-2012-11743-5
https://doi.org/10.1090/s0002-9939-2012-11743-5
Autor:
Bijan Ahmadi Kakavandi, Massoud Amini
Publikováno v:
Nonlinear Analysis: Theory, Methods & Applications. 73:3450-3455
Thanks to the recent concept of quasilinearization of Berg and Nikolaev, we have introduced the notion of duality and subdifferential on complete C A T ( 0 ) (Hadamard) spaces. For a Hadamard space X , its dual is a metric space X ∗ which strictly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26d7909934679c9d0b7e1eb61f47a270
https://doi.org/10.1016/j.na.2010.07.033
https://doi.org/10.1016/j.na.2010.07.033