Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Mihai N. Pascu"'
Publikováno v:
Results in Mathematics. 78
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d288e7befd5ab20ee018ba0d5c30eb0
https://doi.org/10.1007/s00025-022-01802-5
https://doi.org/10.1007/s00025-022-01802-5
Autor:
Mihai N. Pascu, Nicolae R. Pascu
Publikováno v:
Complex Analysis and Operator Theory. 11:1781-1787
In the present paper we introduce a new characterization of the convexity of a planar domain, based on the convexity constant K(D) of a domain $$D\subset \mathbb {C}$$ . We show that in the class of simply connected planar domains, $$K(D) =1$$ charac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d2bf1baf1666ba7a3c4d28ce1915f1d
https://doi.org/10.1007/s11785-017-0692-2
https://doi.org/10.1007/s11785-017-0692-2
Autor:
Mihai N. Pascu, Nicolae R. Pascu
Publikováno v:
Journal of Mathematical Analysis and Applications. 449:793-807
In the present paper we introduce a new characterization of the convexity of a planar domain, based on the convexity constant K ( D ) of a domain D ⊂ C . We show that in the class of simply connected planar domains, K ( D ) = 1 characterizes the co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7d5d0e618dd65442cac6505b553249d
https://doi.org/10.1016/j.jmaa.2016.12.024
https://doi.org/10.1016/j.jmaa.2016.12.024
Publikováno v:
Results in Mathematics. 74
We recently showed (Pascu et al., in: Proceedings of the Romanian Academy. Series A. Mathematics, physics, technical sciences, information science, 2019) that by choosing a negative value of the parameter of the classical Bernstein–Stancu operator,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::692fd3c8b0fd8bad0b9d6b5fa062fb0c
https://doi.org/10.1007/s00025-019-0968-0
https://doi.org/10.1007/s00025-019-0968-0
Autor:
Ionel Popescu, Mihai N. Pascu
Publikováno v:
Stochastic Processes and their Applications. 126:628-650
In this paper we introduce three Markovian couplings of Brownian motions on smooth Riemannian manifolds without boundary which sit at the crossroad of two concepts. The first concept is the one of shy coupling put forward in Benjamini et al. (2007) a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be7f033a6af5379bf3b6e95d6c5aad45
https://doi.org/10.1016/j.spa.2015.09.014
https://doi.org/10.1016/j.spa.2015.09.014
Publikováno v:
Potential Analysis. 44:655-672
We give a representation of the solution of the Neumann problem for the Laplace operator on the n-dimensional unit ball in terms of the solution of an associated Dirichlet problem. The representation is extended to other operators besides the Laplaci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::271f24a9e68f336c278a173a22d44104
https://doi.org/10.1007/s11118-015-9524-z
https://doi.org/10.1007/s11118-015-9524-z
Publikováno v:
Stochastic Analysis and Related Topics ISBN: 9783319596709
We present results concerning the representation of the solution of the Neumann problem for the Laplace operator on the n-dimensional unit ball in terms of the solution of an associated Dirichlet problem. We show that the representation holds in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::83d004913d91fcc50b960cc631f063c4
https://doi.org/10.1007/978-3-319-59671-6_4
https://doi.org/10.1007/978-3-319-59671-6_4
Autor:
Nicolae R. Pascu, Mihai N. Pascu
Publikováno v:
Applied Mathematics and Computation. 232:559-567
We introduce a method for constructing the best approximation of an analytic function in a subclass K ∗ ⊂ K of convex functions, in the sense of the L 2 norm. The construction is based on solving a certain semi-infinite quadratic programming prob
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::633d85945223d3560e40da219155b180
https://doi.org/10.1016/j.amc.2014.01.089
https://doi.org/10.1016/j.amc.2014.01.089
Autor:
Nicolae R. Pascu, Mihai N. Pascu
Publikováno v:
Applied Mathematics and Computation. 218:6825-6832
When an analytic function is not univalent, it is often of interest to approximate it by univalent functions. In this paper we introduce a measure of the non-univalency of a function and we derive a method for constructing the best starlike univalent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8c801d472672780661887862c0e857be
https://doi.org/10.1016/j.amc.2011.12.052
https://doi.org/10.1016/j.amc.2011.12.052
Autor:
Mihai N. Pascu, Maria E. Gageonea
Publikováno v:
Journal of Functional Analysis. 260(2):490-500
A well-known conjecture of R. Laugesen and C. Morpurgo asserts that the diagonal of the Neumann heat kernel of the unit ball U ⊂ R n is a strictly increasing radial function. In this paper we use probabilistic arguments to settle this conjecture an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4de40a8b334a96f4ba33c01099954aae