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pro vyhledávání: '"secondary 47a30, 47b47"'
Publikováno v:
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, Vol 30, Iss 1, Pp 75-89 (2022)
In the present paper we introduce a new class of analytic functions f in the open unit disk normalized by f(0) = f′(0)−1 = 0, associated with exponential functions. The aim of the present paper is to investigate the third-order Hankel determinant
Externí odkaz:
https://doaj.org/article/ede8aa99c2584284911a59035a33de52
Publikováno v:
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, Vol 29, Iss 3, Pp 183-200 (2021)
This work continues our previous analysis concerning the numerical solution of the multi-component mass transfer equations. The present test problems are two-dimensional, parabolic, non-linear, diffusion- reaction equations. An implicit finite differ
Externí odkaz:
https://doaj.org/article/0e86747f928e4a4b989fe5d751ac9783
Publikováno v:
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, Vol 29, Iss 2, Pp 155-171 (2021)
In real life, variability and inaccuracy are always presentand must be calculated by either possibilistic, probabilistic, polymorphic or other uncertainty approach. This benchmark study is about to construct new types of fuzzy soft ideals i.e., (∈,
Externí odkaz:
https://doaj.org/article/1ee67d0c5c944cc6832385df9877816d
Autor:
Sonea Andromeda Cristina
Publikováno v:
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, Vol 28, Iss 3, Pp 241-254 (2020)
The aim of this paper is to compute the commutativity degree in polygroup’s theory, more exactly for the polygroup PG and for extension of polygroups by polygroups, obtaining boundaries for them. Also, we have analyzed the nilpotencitiy of 𝒜[
Externí odkaz:
https://doaj.org/article/d775396f3643410c8baede49da6635c1
Autor:
Florea Ion, Nǎnǎu Corina-Ştefania
Publikováno v:
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, Vol 23, Iss 1, Pp 83-98 (2015)
Many systems of real word are modeled by retrial queuing system with batch arrivals. Analytical formulas for this class of systems are complicated and address only particular cases. The paper presents a study approach for this kind of systems, based
Externí odkaz:
https://doaj.org/article/e58ab3f65f234638a5da6fdac2c43f47
Publikováno v:
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, Vol 22, Iss 3, Pp 13-36 (2014)
In this paper, we present a posteriori analysis of the discretization of the heat equation by spectral element method. We apply Euler’s implicit scheme in time and spectral method in space. We propose two families of error indicators both of them a
Externí odkaz:
https://doaj.org/article/facace28541743919eee2149feb85cff