Results 21 to 30 of about 777,086 (291)
New results on q-positivity [PDF]
, 2011 In this paper we discuss symmetrically self-dual spaces, which are simply real vector spaces with a symmetric bilinear form. Certain subsets of the space will be called q-positive, where q is the quadratic form induced by the original bilinear form.
F.A. Valentine +12 more
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Analysis of COVID-19 outbreak in Democratic Republic of the Congo using fractional operators
AIMS Mathematics, 2023 The spread of COVID-19 in the Democratic Republic of the Congo is investigated in this work using fractional operators. To model the spread of the current COVID-19 variant among different age groups, we employ the epidemic scenario in the Democratic ...
Aqeel Ahmad +3 more
doaj +1 more source
Positivity, negativity, and entanglement [PDF]
, 2015 We explore properties of the universal terms in the entanglement entropy and logarithmic negativity in 4d CFTs, aiming to clarify the ways in which they behave like the analogous entanglement measures in quantum mechanics.
Perlmutter, Eric +2 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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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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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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The positivity of the fractional order model of a two-dimensional temperature field [PDF]
Bulletin of the Polish Academy of Sciences: Technical Sciences, 2023 The paper presents analysis of the positivity for a two-dimensional temperature field. The process under consideration is described by the linear, infinite-dimensional, noninteger order state equation.
Krzysztof Oprzędkiewicz
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A note on well-posedness of source identification elliptic problem in a Banach space
Қарағанды университетінің хабаршысы. Математика сериясы, 2020 We study the source identification problem for an elliptic differential equation in a Banach space. The exact estimates for the solution of source identification problem in H¨older norms are obtained. In applications, four elliptic source identification
A. Ashyralyev +2 more
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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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