Results 101 to 110 of about 25,571,312 (380)
Dynamics of polynomial systems at infinity
Electronic Journal of Differential Equations, 2001 The behaviour of dynamics at infinity has not received much attention, even though it was central to Poincare's analysis of qualitative dynamics. Poincare's `sphere' is actually a projective plane and our treatment of dynamics at infinity in more than ...
Efthimios Kappos
doaj
Membrane Systems Languages Are Polynomial-Time Parsable [PDF]
Computer Science Journal of Moldova, 2010 The focus of this paper is the family of languages generated by transitional non-cooperative P systems without further ingredients. This family can also be defined by so-called time yields of derivation trees of context-free grammars.
Artiom Alhazov +3 more
doaj
Integrability and solvability of polynomial Liénard differential systems [PDF]
, 2021 Maria V. Demina
openalex +1 more source
Polynomial computation of Hankel singular values [PDF]
, 1992 A revised and improved version of a polynomial algorithm is presented. It was published by N.J. Young (1990) for the computation of the singular values and vectors of the Hankel operator defined by a linear time-invariant system with a rotational ...
Kwakernaak, Huibert
core +1 more source
Advanced Healthcare Materials, EarlyView.This work pioneers melt electrowriting (MEW) of polyethylene vinyl acetate (PEVA) to fabricate ultra‐compliant, high‐resolution scaffolds. By integrating microscale precision with soft tissue‐like biomechanics, PEVA overcomes stiffness‐driven limitations of conventional MEW polymers, establishing a mechanically biomimetic platform for soft tissue ...
Finn Snow +9 more
wiley +1 more source
Solving Degree Bounds for Iterated Polynomial Systems
IACR Transactions on Symmetric CryptologyFor Arithmetization-Oriented ciphers and hash functions Gröbner basis attacks are generally considered as the most competitive attack vector. Unfortunately, the complexity of Gröbner basis algorithms is only understood for special cases, and it is ...
Matthias Johann Steiner
doaj +1 more source
, 2001 In this paper we provide the greatest lower bound about the number of (non-infinitesimal) limit cycles surrounding a unique singular point for a planar polynomial differential system of arbitrary degree.
Li, Chengzhi +3 more
openaire +1 more source
Advanced Materials, EarlyView.AI‐Assisted Workflow for (Scanning) Transmission Electron Microscopy: From Data Analysis Automation to Materials Knowledge Unveiling. Abstract (Scanning) transmission electron microscopy ((S)TEM) has significantly advanced materials science but faces challenges in correlating precise atomic structure information with the functional properties of ...
Marc Botifoll +19 more
wiley +1 more source
Uniformly isochronous polynomial centers
Electronic Journal of Differential Equations, 2005 We study a specific family of uniformly isochronous polynomial systems. Our results permit us to solve a problem about centers of such systems. We consider the composition conjecture for uniformly isochronous polynomial systems.
Vladimir V. Ivanov, Evgenii P. Volokitin
doaj
Advanced Materials, EarlyView.Magnetic doping of the topological insulator Bi2Te3 with erbium adatoms induces out‐of‐plane magnetism and breaks time‐reversal symmetry, opening a Dirac gap and driving a Fermi surface transition from hexagonal to star‐of‐David geometry. Microscopy, spectroscopy, and magnetic dichroism reveal atomically controlled magnetic interactions that tailor the
Beatriz Muñiz Cano +18 more
wiley +1 more source