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Browsing Mathematics by Title
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Adaricheva, Kira; Wild, Marcel
(2007)
The Edelman-Jamison problem is to characterize those abstract
convex geometries that are representable by a set of points in the plane. We
show that some natural modification of the Edelman-Jamison problem is equivalent
to ...
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Bolat, Madina
(Nazarbayev University School of Science and Technology, 2016-05)
Convex geometries are closure systems satisfying anti-exchange axiom with
combinatorial properties. Every convex geometry is represented by a convex
geometry of points in n-dimensional space with a special closure ...
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Adaricheva, Kira
(2015-06)
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Adaricheva, Kira
(2011)
A closure system with the anti-exchange axiom is called a convex
geometry. One geometry is called a sub-geometry of the other if its closed sets
form a sublattice in the lattice of closed sets of the other. We prove that ...
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Badaev, Serikzhan A.; Mustafa, M.
(2012)
Let a be a Kleene's ordinal notation of a nonzero computable ordinal. We give a su cient condition on a, so that for every 1 a {computable family of two embedded sets, i.e. two sets A;B, with A properly contined in B, ...
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Aurentz, Jared L.; Mach, Thomas; Robol, Leonardo; Vandebril, Raf; Watkins, David S.
(arXiv, 2016-11-08)
Two generalizations of the companion QR algorithm by J.L. Aurentz, T. Mach, R. Vandebril, and D.S. Watkins, SIAM Journal on Matrix Analysis and Applications, 36(3): 942--973, 2015, to compute the roots of a polynomial are ...
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Kadyrov, Shirali; Kleinbock, D.; Lindenstrauss, E.; Margulis, G.A.
(2014)
Singular systems of linear forms were introduced by Khintchine
in the 1920s, and it was shown by Dani in the 1980s that they
are in one-to-one correspondence with certain divergent orbits of oneparameter
diagonal groups ...
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Shakir, Akyl
(Nazarbayev University School of Science and Technology, 2018-05)
We apply singularity analysis in complex time to investigate the solutions of a dynamical system of one degree of freedom related to the oscillations of a Micro-Electro-Mechanical System (MEMS) of nonlinear elasticity. ...
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Wei, Dongming; Liu, Yu
(Applied Mathematical Sciences, 2012)
In this paper, it is shown that D. Shelupsky's generalized sine func-
tion, and various general sine functions developed by P. Drabek, R.
Manasevich and M. Otani, P. Lindqvist, including the generalized Ja-
cobi elliptic ...
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Shena, Joniald; Kominis, Yannis; Bountis, Anastasios; Kovanis, Vassilios
(PHYSICAL REVIEW E, 2020)
Arrays of coupled semiconductor lasers are systems possessing radically complex dynamics that makes
them useful for numerous applications in beam forming and beam shaping. In this work, we investigate the
spatial ...
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Kominis, Yannis; Kovanis, Vassilios; Bountis, Tassos
(ArXiv, 2017-10-04)
The fundamental active photonic dimer consisting of two coupled quantum well lasers is inves-tigated in the context of the rate equation model. Spectral transition properties and exceptional points are shown to occur under ...
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Kominis, Yannis; Kovanis, Vassilios; Bountis, Tassos
(arXiv, 2018-08)
The fundamental active photonic dimer consisting of two coupled quantum well lasers is inves-
tigated in the context of the rate equation model. Spectral transition properties and exceptional
points are shown to occur ...
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Baki, Zhuldyzay
(Nazarbayev University School of Science and Technology, 2016-05)
In this report we present an SEIS model for infectious diseases with
latent period and no immune response for spatially heterogeneous environment. Spatial heterogeneity is designed by several metapopulations. It was shown ...
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Kominis, Yannis; Bountis, Tassos; Flach, Sergej
(ArXiv, 2017-06-23)
We analyze the stability of a non-Hermitian coupler with respect to modulational inhomogeneous perturbations in the presence of unbalanced gain and loss. At the parity-time (PT) symmetry point the coupler is unstable. ...
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Kominis, Yannis; Bountis, Tassos; Flach, Sergej
(Physical Review A, 2017-06-21)
We analyze the stability of a non-Hermitian coupler with respect to modulational inhomogeneous perturbations
in the presence of unbalanced gain and loss. At the parity-time (PT ) symmetry point the coupler is unstable.
Suitable ...
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Kairzhan, Adilbek
(Nazarbayev University School of Science and Technology, 2015-04)
The study of locations of zeroes of functions became popular among mathematicians
many years ago. This investigation contributes a lot to wide range of
theories and topics in Mathematics and Physics.
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Adaricheva, Kira
(2011)
An assosiahedron Kn, known also as Stasheff polytope, is a multifaceted
combinatorial object, which, in particular, can be realized as a convex
hull of certain points in Rn, forming (n − 1)-dimensional polytope1.
A ...
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Azamat, Daiana
(Nazarbayev University School of Science and Technology, 2016)
This paper presents the results of developing a statistical model for morphological
disambiguation of Kazakh text. Starting with basic assumptions we tried
to cope with the complex morphology of Kazakh language by breaking ...
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Zharas, Banu
(Nazarbayev University School of Science and Technology, 2019-05-01)
In recent years, the study of synchronization of coupled oscillators have been the subject of intense research interest, leading to many new and unexpected phenomena. Our research is first focused on the analysis of a ...
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Kominis, Yannis; Bountis, Tassos; Flach, Sergej
(Scientific Reports, 2016-09-19)
We consider the asymmetric active coupler (AAC) consisting of two coupled dissimilar waveguides with gain and loss. We show that under generic conditions, not restricted by parity-time symmetry, there exist finite-power, ...