Results 191 to 200 of about 4,072,499 (360)

Soliton dynamics and stability in resonant nonlinear Schrödinger systems with cubic quintic effects via enhanced modified extended tanh function method. [PDF]

Sci Rep
Tarek A, Ahmed HM, Badra N, Samir I.
europepmc   +1 more source

Cognitive Competence and Problem-Solving Involving 1st Degree Algebraic Equations

, 2022
Yasmini Lais Spindler Sperafico, Beatriz Vargas Dorneles, Clarissa Seligman Golbert   +2 more
openalex   +1 more source

Attribute Implication Bases From Galois Connection Structures

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT Modeling knowledge systems by determining relationships among key variables have been and currently is a fundamental and nontrivial challenge in real‐world scenarios. Many approaches have been developed to reach this goal, but many of them are heuristic and require of alternative procedures to provide robust and tractable rules.
M. Eugenia Cornejo, Jesús Medina, Francisco José Ocaña   +2 more
wiley   +1 more source

Irrational dynamics, superpitchfork bifurcation, and equilibrium hierarchy in a mass-spring system exhibiting chaos and bursting. [PDF]

Sci Rep
Abobda LT.
europepmc   +1 more source

A pseudo-resolvent approach to abstract differential-algebraic equations [PDF]

Hannes Gernandt, Timo Reis
openalex   +1 more source

Algebraic Approaches to the geopotential Forecast and Nonlinear MHD Equations [PDF]

, 2008
Xiaoping Xu
openalex   +1 more source

C∞$$ {C}^{\infty } $$‐Structures for Liénard Equations and New Exact Solutions to a Class of Klein–Gordon Equations

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT Liénard equations are analyzed using the recent theory of 𝒞∞‐structures. For each Liénard equation, a 𝒞∞‐structure is determined by using a Lie point symmetry and a 𝒞∞‐symmetry. Based on this approach, a novel method for integrating these equations is proposed, which consists in solving sequentially two completely integrable Pfaffian equations.
Beltrán de la Flor, Adrián Ruiz, Concepción Muriel   +2 more
wiley   +1 more source

Active Compensation Fault-Tolerant Control for Uncertain Systems with Both Actuator and Sensor Faults. [PDF]

Sensors (Basel)
Ling X, Xu H, Zhu F.
europepmc   +1 more source

A Shift, Scaling and Rotational Invariant Digital-figure Identification Based on Algebraic Equations.

, 1995
金子 照之, 瀧山 龍三
openalex   +2 more sources

Hybrid Reaction–Diffusion Epidemic Models: Dynamics and Emergence of Oscillations

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT In this paper, we construct a hybrid epidemic mathematical model based on a reaction–diffusion system of the SIR (susceptible‐infected‐recovered) type. This model integrates the impact of random factors on the transmission rate of infectious diseases, represented by a probabilistic process acting at discrete time steps.
Asmae Tajani, Cristiana J. Silva, Guillaume Cantin   +2 more
wiley   +1 more source