Results 11 to 20 of about 379,221 (268)
Perfect Matchings and Cluster Algebras of Classical Type [PDF]
Discrete Mathematics & Theoretical Computer Science, 2008 In this paper we give a graph theoretic combinatorial interpretation for the cluster variables that arise in most cluster algebras of finite type. In particular, we provide a family of graphs such that a weighted enumeration of their perfect matchings ...
Gregg Musiker
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Descriptor standard and positive discrete-time nonlinear systems
Archives of Control Sciences, 2015 A method of analysis of descriptor nonlinear discrete-time systems with regular pencils of linear part is proposed. The method is based on the Weierstrass-Kronecker decomposition of the pencils.
Kaczorek Tadeusz
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The Expression of Religious Positivity in Karen Armstrong’s Sīrah Work
Journal of Islamic and Religious Studies, 2018 Orientalists contributed much regarding their study of the Holy Qur’ān, Hadith and Sīrah since eighteenth century. Few of them attracted Muslim scholars due to the quality of their work about Islam, like the translation of the Holy Qur’ān, the indexes of
Fozia Fiaz, Dr Mohsina Munir
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Frontiers in Physics, 2020 In this paper, two structure-preserving nonstandard finite difference (NSFD) operator splitting schemes are designed for the solution of reaction diffusion epidemic models.
Nauman Ahmed +9 more
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Europe's Journal of Psychology, 2015 The positive characteristics that can help people juggle their work and personal roles and experience greater job satisfaction are attracting increased research attention.
Hod Orkibi, Yaron Ilan Brandt
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Fractal and Fractional, 2022 This article deals with analysing the positivity, monotonicity and convexity of the discrete nabla fractional operators with exponential kernels from the sense of Riemann and Caputo operators.
Pshtiwan Othman Mohammed +3 more
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Children, 2022 This study examines the risk-related factors during the pandemic and protective factors that might reduce its effects on family functioning in a sample of 161 low-income Hispanic parents in the United States, recruited from an ongoing longitudinal ...
Natasha Cabrera +3 more
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Studia Logica, 2020 Arbitrary public announcement logic (APAL) reasons about how the knowledge of a set of agents changes after true public announcements and after arbitrary announcements of true epistemic formulas. We consider a variant of arbitrary public announcement logic called positive arbitrary public announcement logic (APAL+), which restricts arbitrary public ...
Hans van Ditmarsch +2 more
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A note on the parabolic identification problem with involution and Dirichlet condition
Қарағанды университетінің хабаршысы. Математика сериясы, 2020 A space source of identification problem for parabolic equation with involution and Dirichlet condition is studied. The well-posedness theorem on the differential equation of the source identification parabolic problem is established.
A. Ashyralyev, A.S. Erdogan, A. Sarsenbi
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Nonstandard Finite Difference Schemes for an SIR Epidemic Model
Mathematics, 2021 This paper aims to present two nonstandard finite difference (NFSD) methods to solve an SIR epidemic model. The proposed methods have important properties such as positivity and boundedness and they also preserve conservation law.
Mohammad Mehdizadeh Khalsaraei +3 more
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