Results 21 to 30 of about 197,801 (309)

Global behavior of a rational difference equation with quadratic term [PDF]

open access: yesMathematica Moravica, 2014
In this paper, we determine the forbidden set, introduce an explicit formula for the solutions and discuss the global behavior of all solutions of the difference equation Xn+1 = aXnXn-1 bXn - CXn-2, n = 0, 1, … where a, b, c are positive real numbers and
Abo-Zeid R.
doaj  

Periodic Solution of the Hematopoiesis Equation

open access: yesAbstract and Applied Analysis, 2013
Wu and Liu (2012) presented some results for the existence and uniqueness of the periodic solutions for the hematopoiesis model. This paper gives a simple approach to find an approximate period of the model.
Ji-Huan He
doaj   +1 more source

Anti-periodic solution for fuzzy differential equations

open access: yes上海师范大学学报. 自然科学版, 2021
In this paper, using differential inclusions’ approach, we obtain existence results of antiperiodic solutions for a class of fuzzy differential equations. An example shows the feasibility of the main results.
ZHU Shumin, WANG Qi
doaj   +1 more source

Solution of Positive Periodic Discrete Lyapunov Equations with Applications to the Balancing of Periodic Systems.

open access: yes, 1997
The discrete-time positive periodic Lyapunov equations have important applications in the balancing and potentially also in the model reduction of discrete-time periodic systems.
A. Varga, Varga, A., Andreas Varga
core   +1 more source

Locally periodic unfolding method and two-scale convergence on surfaces of locally periodic microstructures [PDF]

open access: yes, 2015
In this paper we generalize the periodic unfolding method and the notion of two-scale convergence on surfaces of periodic microstructures to locally-periodic situations.
Ptashnyk, Mariya   +2 more
core   +1 more source

On solving periodic Riccati equations

open access: yes, 2008
Numerically reliable algorithms to compute the periodic non-negative definite stabilizing solutions of the periodic differential Riccati equation (PRDE) and discrete-time periodic Riccati equation (DPRE) are proposed. For the numerical solution of PRDEs,
A. Varga, Varga, Andreas
core   +1 more source

On solving discrete-time periodic Riccati equations

open access: yes, 2005
Two numerically reliable algorithms to compute the periodic nonnegative definite stabilizing solution ofdiscrete-time periodic Riccati equations are proposed.
A. Varga, Varga, Andras
core   +1 more source

Time-Periodic Solution of the Weakly Dissipative Camassa-Holm Equation

open access: yesInternational Journal of Differential Equations, 2011
This paper is concerned with time-periodic solution of the weakly dissipative Camassa-Holm equation with a periodic boundary condition. The existence and uniqueness of a time periodic solution is presented.
Chunyu Shen
doaj   +1 more source

Health‐Related Quality of Life and Symptom Severity Among Patients With PIK3CA‐Related Overgrowth Spectrum: A Mixed‐Methods Study to Understand Real‐World Experience With Alpelisib Treatment

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background PIK3CA‐related overgrowth spectrum (PROS) includes several rare overgrowth disorders resulting from somatic gain‐of‐function mutations in PIK3CA. Despite treatment advances, including the recent approval of alpelisib for PROS in the United States, literature detailing the patient experience with PROS is limited.
Vamsi Bollu   +8 more
wiley   +1 more source

Positive periodic solution for indefinite singular Liénard equation with p-Laplacian

open access: yesAdvances in Difference Equations, 2019
The efficient conditions guaranteeing the existence of positive T-periodic solution to the p-Laplacian–Liénard equation (ϕp(x′(t)))′+f(x(t))x′(t)+α1(t)g(x(t))=α2(t)xμ(t), $$\bigl(\phi _{p}\bigl(x'(t)\bigr) \bigr)'+f \bigl(x(t)\bigr)x'(t)+\alpha _{1}(t)g ...
Tiantian Zhou, Bo Du, Haiqing Du
doaj   +1 more source

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