Results 11 to 20 of about 943 (165)
Adrenocortical Carcinoma in Peutz-Jeghers Syndrome With a Rare STK11 Pathogenic Germline Variant: A Case Report. [PDF]
Cancer Rep (Hoboken)ABSTRACT Background Peutz–Jeghers syndrome (PJS) is an inherited, autosomal‐dominant condition, featuring STK11 germline mutations, characterized by hamartomatous gastrointestinal polyps and increased cancer risk. The most commonly associated malignancies are gastrointestinal, pancreatic, and breast cancers.
Ishida T +14 more
europepmc +2 more sources
Evolutionary dynamics on a regular networked structured and unstructured multi‐population
International Journal of Robust and Nonlinear Control, EarlyView., 2023 Abstract In this paper, we study collective decision‐making in a multi‐population framework, where groups of individuals represent whole populations that interact by means of a regular network. Each group consists of a number of players and every player can choose between two options.
Wouter Baar +2 more
wiley +1 more source
Nagumo conditions and second-order quasilinear equations with compatible nonlinear functional boundary conditions [PDF]
Rocky Mountain Journal of Mathematics, 2011 Assuming the existence of ordered lower and upper solutions for \[ -\frac{d}{dt} \varphi(t,x,x(t),x'(t))=f(t,x,x(t),x'(t)) \quad \text{a.e. on } [0,1], \] the authors establish the existence of solutions to the above differential equation subject to general functional boundary conditions of the form \[ G(x(0),x(1),x,x'(0),x'(1))=(0,0), \] where ...
Mawhin, Jean, Thompson, H. B.
openaire +4 more sources
Mathematics, 2023 This paper deals with two types of systems of second-order differential equations with parameters: coupled systems with the boundary conditions of the Sturm–Liouville type and classical systems with Dirichlet boundary conditions.
Feliz Minhós, Gracino Rodrigues
doaj +1 more source
MULTIPLE PERIODIC SOLUTIONS OF p-LAPLACIAN EQUATION WITH ONE-SIDE NAGUMO CONDITION [PDF]
Journal of the Korean Mathematical Society, 2008 In this paper, the existence and multiplicity of solution of periodic solutions of p-Laplacian boundary value problem are studied by using degree theory and upper and lower solutions method. Some known results are improved.
Jian Jun Zhang +3 more
openaire +1 more source
Electronic Journal of Qualitative Theory of Differential Equations, 2011 This paper is concerned with a second-order nonlinear boundary value problem with a derivative depending nonlinearity and posed on the positive half-line. The derivative operator is time dependent.
Smail Djebali, S. Zahar
doaj +1 more source
New results and applications on the existence results for nonlinear coupled systems
Advances in Difference Equations, 2021 In this manuscript, we study a certain classical second-order fully nonlinear coupled system with generalized nonlinear coupled boundary conditions satisfying the monotone assumptions.
Imran Talib +4 more
doaj +1 more source
A third-order boundary value problem with one-sided Nagumo condition
Nonlinear Analysis: Theory, Methods & Applications, 2005 Abstract In this paper we present an existence and location result for the third-order separated boundary value problem u ‴ ( t ) = f ( t , u ( t ) , u ′ ( t ) , u ″ ( t ) ) , u ( a ) = A , u ″ ( a ) = 0 , u ″ ( b ) = 0 , where f : [ a
Grossinho, Maria do Rosário +2 more
openaire +4 more sources
Monostable-Type Travelling Wave Solutions of the Diffusive FitzHugh-Nagumo-Type System in 𝐑𝑁
Abstract and Applied Analysis, 2012 This paper is concerned with monostable-type travelling wave solutions of the diffusive FitzHugh-Nagumo-type system (FHN) in 𝐑𝑁 for the two components 𝑢 and 𝑣.
Chih-Chiang Huang
doaj +1 more source
Open Mathematics, 2023 This article discusses the existence of positive solutions for the system of second-order ordinary differential equation boundary value problems −u″(t)=f(t,u(t),v(t),u′(t)),t∈[0,1],−v″(t)=g(t,u(t),v(t),v′(t)),t∈[0,1],u(0)=u(1)=0,v(0)=v(1)=0,\left\{\begin{
Wang Dan, Li Yongxiang, Su Yi
doaj +1 more source