Results 61 to 70 of about 25,571,312 (380)
Bifurcation of critical periods of a quintic system
Electronic Journal of Differential Equations, 2018 We investigate the critical period bifurcations of the system $$ \dot x = ix + x \bar x ( a x^3 + b x^2 \bar x + \bar x \bar x^2+d \bar x^3) $$ studied in [6].
Valery G. Romanovski +2 more
doaj
An Algebraic Approach to Identifiability
Algorithms, 2021 This paper addresses the problem of identifiability of nonlinear polynomial state-space systems. Such systems have already been studied via the input-output equations, a description that, in general, requires differential algebra.
Daniel Gerbet, Klaus Röbenack
doaj +1 more source
Orienting Transversals and Transition Polynomials of Multimatroids
, 2017 Multimatroids generalize matroids, delta-matroids, and isotropic systems, and transition polynomials of multimatroids subsume various polynomials for these latter combinatorial structures, such as the interlace polynomial and the Tutte-Martin polynomial.
Brijder, Robert
core +1 more source
Transfer of Energy and Momentum Between Magnetoactive Surface Microstructure and a Solid Object
Advanced Engineering Materials, EarlyView.We demonstrate that magnetoactive multilamellar arrays subjected to a rotating magnetic field can function as platforms for controlled transport of physical objects. Through systematic experimental investigation, we elucidate the underlying physical mechanisms determining the upper limit of the achievable transportation speed in such magnetic “conveyor‐
Arne Geldof +9 more
wiley +1 more source
Fifteen Limit Cycles Bifurcating from a Perturbed Cubic Center
Discrete Dynamics in Nature and Society, 2021 In this work, we study the bifurcation of limit cycles from the period annulus surrounding the origin of a class of cubic polynomial differential systems; when they are perturbed inside the class of all polynomial differential systems of degree six, we ...
Amor Menaceur +3 more
doaj +1 more source
Theoretical Computer Science, 2002 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire +2 more sources
, 2013 Nondeterministic polynomial-time Blum-Shub-Smale Machines over the reals give rise to a discrete complexity class between NP and PSPACE. Several problems, mostly from real algebraic geometry / polynomial systems, have been shown complete (under many-one ...
Herrmann, Christian +2 more
core +2 more sources
Advanced Engineering Materials, EarlyView.It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti +11 more
wiley +1 more source
Transformation to Lienard form
Electronic Journal of Differential Equations, 2000 We show that certain two-dimensional differential systems can be transformed to a system of Li'{e}nard type. This enables known criteria for the existence of a centre for Li'{e}nard systems to be exploited, so extending the range of techniques which are ...
W. A. Albarakati +2 more
doaj
Transforming Dependency Chains of Constrained TRSs into Bounded Monotone Sequences of Integers [PDF]
Electronic Proceedings in Theoretical Computer Science, 2018 In the dependency pair framework for proving termination of rewriting systems, polynomial interpretations are used to transform dependency chains into bounded decreasing sequences of integers, and they play an important role for the success of proving ...
Tomohiro Sasano +3 more
doaj +1 more source