Results 31 to 40 of about 404,835 (279)
Explicit inverse of a tridiagonal (p,r)-Toeplitz matrix [PDF]
, 2018 We have named tridiagonal (p,r)–Toeplitz matrix to those tridiagonal matrices in which each diagonal is a quasi–periodic sequence, d(p+j)=rd(j), so with period p¿N but multiplied by a real number r. We present here the necessary and sufficient conditions
Encinas Bachiller, Andrés Marcos +1 more
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Anti-periodic boundary value problems with Riesz–Caputo derivative [PDF]
Advances in Difference Equations, 2019 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Fulai Chen, Anping Chen, Xia Wu
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Nontrivial Solutions of a Fully Fourth-Order Periodic Boundary Value Problem
Journal of Applied Mathematics, 2014 We investigate the solvability of a fully fourth-order periodic boundary value problem of the form x(4)=f(t,x,x′,x′′,x′′′), x(i)(0)=x(i)(T), i=0,1,2,3, where f:[0,T]×R4→R satisfies Carathéodory conditions.
Haitong Li, Minghe Pei, Libo Wang
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A family of piecewise-smooth solutions of a class of spatially distributed equations
Современная математика: Фундаментальные направления, 2023 In this paper, we consider a spatially distributed equation with a periodic boundary condition and the zero integral mean condition in the spatial variable.
S. A. Kaschenko +2 more
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On periodic boundary value problem for the Sturm-Liouville operator
, 2005 We consider the Sturm-Liouville operator Lu=u''-q(x)u with periodic or antiperiodic boundary conditions. It is shown that depending of Fourier coefficients of the potential q(x) the system of root functions may have or may not have the basis property ...
Makin, Alexander
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Unbounded Periodic Solutions to Serrin’s Overdetermined Boundary Value Problem [PDF]
Archive for Rational Mechanics and Analysis, 2016 We study the existence of nontrivial unbounded domains $ $ in $\mathbb{R}^N$ such that the overdetermined problem $$ - u = 1 \quad \text{in $ $}, \qquad u=0, \quad \partial_ u=\textrm{const} \qquad \text{on $\partial $} $$ admits a solution $u$. By this, we complement Serrin's classification result from 1971 which yields that every bounded domain
Fall, Mouhamed Moustapha +2 more
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Somatic mutational landscape in von Hippel–Lindau familial hemangioblastoma
Molecular Oncology, EarlyView.The causes of central nervous system (CNS) hemangioblastoma in Von Hippel–Lindau (vHL) disease are unclear. We used Whole Exome Sequencing (WES) on familial hemangioblastoma to investigate events that underlie tumor development. Our findings suggest that VHL loss creates a permissive environment for tumor formation, while additional alterations ...
Maja Dembic +5 more
wiley +1 more source
On a superlinear periodic boundary value problem with vanishing Green's function
Electronic Journal of Qualitative Theory of Differential Equations, 2016 We prove the existence of positive solutions for the boundary value problem \[ \begin{cases} y^{\prime \prime }+a(t)y=\lambda g(t)f(y),\quad 0\leq t\leq 2\pi, \\ y(0)=y(2\pi ),\quad y^{\prime }(0)=y^{\prime }(2\pi ), \end{cases} \] where $\lambda $ is ...
Dang Dinh Hai
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Periodic Boundary Value Problems for Semilinear Fractional Differential Equations [PDF]
Mathematical Problems in Engineering, 2012 We study the periodic boundary value problem for semilinear fractional differential equations in an ordered Banach space. The method of upper and lower solutions is then extended. The results on the existence of minimal and maximal mild solutions are obtained by using the characteristics of positive operators semigroup and the monotone iterative scheme.
Mu, Jia, Li, Yongxiang
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FEBS Open Bio, EarlyView.We found that during chemotherapy‐induced alopecia (CIA), Sonic hedgehog (Shh) expression significantly decreased in hair follicle Shh+ cells, whereas the Janus‐activated kinase/signal transducer and activator of transcription 1 (JAK/STAT1) signaling pathway was markedly activated.
Ruifang Fan +6 more
wiley +1 more source