Results 31 to 40 of about 1,447,206 (291)

Periodic solutions of second order Hamiltonian systems bifurcating from infinity [PDF]

, 2006
The goal of this article is to study closed connected sets of periodic solutions, of autonomous second order Hamiltonian systems, emanating from infinity. The main idea is to apply the degree for SO(2)-equivariant gradient operators defined by the second
Adams, Ambrosetti, Brown, Böhme, Dancer, Fura, Geba, Glover, Ize, Justyna Fura, Le, Ma, Maciejewski, Malaguti, Marino, Rabier, Radzki, Radzki, Rybicki, Rybicki, Rybicki, Rybicki, Sabatini, Sabatini, Sławomir Rybicki, Takens, tom Dieck   +26 more
core   +3 more sources

From the Fibonacci Icosagrid to E₈ (Part I): The Fibonacci Icosagrid, an H₃ Quasicrystal

Crystals
This paper introduces a new kind of quasicrystal by Fibonacci-spacing a multigrid of a certain symmetry, like H2, H3, T3, etc. Multigrids of a certain symmetry can be used to generate quasicrystals, but multigrid vertices are not a quasicrystal due to ...
Fang Fang, Klee Irwin
doaj   +1 more source

Periodic behaviour of nonlinear second order discrete dynamical systems

, 2015
In this work we provide conditions for the existence of periodic solutions to nonlinear, second-order difference equations of the form \begin{equation*} y(t+2)+by(t+1)+cy(t)=g(t,y(t)) \end{equation*} where $c\neq 0$, and $g:\mathbb{Z}^+\times\mathbb{R ...
Maroncelli, Daniel, Rodriguez, Jesus
core   +1 more source

Periodic solutions of third order differential equations

Journal of Innovative Applied Mathematics and Computational Sciences
In this paper, we study the existence of periodic solutions for the following piecewise third-order differential equation: $$ \dddot{x}+\dot{x}-\varepsilon\sum\limits_{i=1}^{2}c_i|x|^i=0, $$ with $\varepsilon$ a real parameter sufficiently small, $c_1$
Nabil Rezaiki, Amel Boulfoul
doaj   +1 more source

Positive Periodic Solutions for First-Order Neutral Functional Differential Equations with Periodic Delays

Abstract and Applied Analysis, 2012
In this paper, two classes of first-order neutral functional differential equations with periodic delays are considered. Some results on the existence of positive periodic solutions for the equations are obtained by using the Krasnoselskii fixed point ...
Zeqing Liu, Xin Li, Shin Min Kang, Young Chel Kwun   +3 more
doaj   +1 more source

Smectic Liquid Crystals: Materials with One-Dimensional, Periodic Order

, 2006
Smectic liquid crystals are materials formed by stacking deformable, fluid layers. Though smectics prefer to have flat, uniformly-spaced layers, boundary conditions can impose curvature on the layers. Since the layer spacing and curvature are intertwined,
B.A. DiDonna, C.D. Santangelo, C.D. Santangelo, C.D. Santangelo, Christian D. Santangelo, D. Duque, E.A. Brener, M. Kleman, M.K. Prasad, P.G. Gennes de, P.G. Gennes de, P.M. Chaikin, R.D. Kamien, R.D. Kamien, R.D. Kamien, Randall D. Kamien   +15 more
core   +1 more source

Three-dimensional quasi-periodic shifted Green function throughout the spectrum--including Wood anomalies [PDF]

, 2017
This work presents an efficient method for evaluation of wave scattering by doubly periodic diffraction gratings at or near "Wood anomaly frequencies".
Bruno, Oscar P., Shipman, Stephen P., Turc, Catalin, Venakides, Stephanos   +3 more
core   +3 more sources

Periodic Quasiregular Mappings of Finite Order

Revista Matemática Iberoamericana, 2003
The authors construct a periodic quasiregular function of any finite order \rho , 1\leq\rho < \infty . This completes earlier work of O. Martio and U. Srebro.
Drasin, David, Sastry, Swati
openaire   +3 more sources

Blinatumomab Utilization in Pediatric B‐Cell Acute Lymphoblastic Leukemia: Experience From the Mountain West

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Blinatumomab is a bispecific T‐cell engager approved for the treatment of pediatric B‐cell acute lymphoblastic leukemia (B‐ALL). Outpatient home infusion reduces hospitalization burden and optimizes resource utilization, but is logistically challenging.
Angela Parra del Riego, Kellee Parker, William C. Thomsen, James B. Ford, Mallorie B. Heneghan, David Spencer Mangum, Jennifer L. McNeer, Luke D. Maese, Claire E. F. Miller, Richard Lemons, Taumoha Ghosh   +10 more
wiley   +1 more source

Periodic review and continuous ordering [PDF]

European Journal of Operational Research, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Dennis Prak, Ruud Teunter, Jan Riezebos
openaire   +6 more sources