Results 61 to 70 of about 6,919,485 (295)
Correlation matrices of yields and total positivity [PDF]
Linear Algebra and its Applications, 2006 Using some tools originally developed in the framework of totally positive matrices, the relations between the spectral properties of the correlation matrices of forward interest rates and the positivity and the monotonicity of their elements are investigated.
SALINELLI, Ernesto, C. Sgarra
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Accurate Computations with Generalized Pascal k-Eliminated Functional Matrices
MathematicsThis paper presents an accurate method to obtain the bidiagonal decomposition of some generalized Pascal matrices, including Pascal k-eliminated functional matrices and Pascal symmetric functional matrices.
Jorge Delgado +2 more
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Scientific Reports, 2023 We conducted a prospective study to evaluate the prevalence of high-risk human papillomavirus (hr-HPV) positivity in women with atypical squamous cells of undetermined significance (ASC-US).
Pornporm Ittiamornlert +7 more
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Heliyon, 2023 Background: Despite the increasing reports of re-positive SARS-CoV-2 cases after recovery and discharge from hospitals, our knowledge remains very limited regarding the contributing factors of re-positivity and its roles in the transmission and ...
Mei Peng +13 more
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Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Background Maintenance hemodialysis (MHD) patients frequently suffer from frailty, characterized by reduced physical function and poor prognosis. Myokines, such as myonectin, secreted by muscle, are emerging regulators of systemic health. This study investigated the relationship between serum myonectin, adipokines (adiponectin, omentin), and ...
Kenichi Kono +7 more
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Combinatorial aspects of total positivity [PDF]
, 2005 Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mathematics, 2005.Includes bibliographical references (p. 115-119).In this thesis I study combinatorial aspects of an emerging field known as total positivity. The classical theory of total
Williams, Lauren Kiyomi
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Determinantal criteria for total positivity [PDF]
, 2001 A matrix is totally positive (respectively, strictly totally positive) if all its minors are nonnegative (respectively, positive). In this paper, we revisit the main determinantal criteria for these matrices and provide two new ones: one of them for the ...
J.M. Peña, Peña, J.M.
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On the Generating Functions of Totally Positive Sequences [PDF]
Proceedings of the National Academy of Sciences, 1951 A real matrix, finite or infinite, is called totally positive if and only if all its minors, of all orders = 1, 2,..., are non-negative. An infinite sequence $$ {a_0},{a_1},{a_2}, \ldots ,\quad \left( {{a_0} = 1} \right), $$ is said to be totally positive(2) if and only if the 2-way infinite matrix Open image in new window is totally ...
Aissen, Michael +3 more
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Total Positivity of the Cubic Trigonometric Bézier Basis
Journal of Applied Mathematics, 2014 Within the general framework of Quasi Extended Chebyshev space, we prove that the cubic trigonometric Bézier basis with two shape parameters λ and μ given in Han et al. (2009) forms an optimal normalized totally positive basis for λ,μ∈(-2,1].
Xuli Han, Yuanpeng Zhu
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Sakarya Tıp Dergisi, 2018 Objective: Screening test results of the donors/ patients who applied to Blood Transfusion Center of Sakarya University Training and Research Hospital were retrospectively evaluated.Methods: A total of 13536 donors/patients who applied to our Blood ...
Hasan Ergenc +8 more
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