Results 71 to 80 of about 191,927 (272)
Dirac structures, moment maps and quasi-Poisson manifolds [PDF]
, 2003 We extend the correspondence between Poisson maps and actions of symplectic groupoids, which generalizes the one between momentum maps and hamiltonian actions, to the realm of Dirac geometry. As an example, we show how hamiltonian quasi-Poisson manifolds
Bursztyn, Henrique, Crainic, Marius
core +4 more sources
The Normal Form Theorem around Poisson Transversals
, 2016 We prove a normal form theorem for Poisson structures around Poisson transversals (also called cosymplectic submanifolds), which simultaneously generalizes Weinstein's symplectic neighborhood theorem from symplectic geometry and Weinstein's splitting ...
Frejlich, Pedro, Marcut, Ioan
core +1 more source
Quasi‐Static to Supersonic Energy Absorption of Nanoarchitected Tubulanes and Schwarzites
Advanced Functional Materials, EarlyView.Nanoarchitected energy‐absorptive Tubulanes exhibit record energy absorption under quasi‐static conditions and exceptional inelastic energy dissipation under 750 m s−1 ballistics impact, with high performance spanning strain rates of 12 orders of magnitude.
Peter Serles +16 more
wiley +1 more source
Advanced Functional Materials, EarlyView.A Cu‐based crystal‐glass composite with high‐density twins is identified by a fast screening technique using combinatorial sputtering together with XRD and nanoindentation mapping. This bamboo‐like structure demonstrates homogenous plastic flow and retains high strength during in situ high temperature tests, up to 1 GPa at 550°C, owing to those ...
Chunhua Tian +10 more
wiley +1 more source
A New Stochastic Geometry Model of Coexistence of Wireless Body Sensor Networks
MATEC Web of Conferences, 2017 Stochastic geometry, in particular Poission point process theory, has been widely used in the last decade to provide models and methods to analyze wireless networks.
Yang Ming +4 more
doaj +1 more source
Toric Poisson Ideals in Cluster Algebras [PDF]
, 2012 This paper investigates the Poisson geometry associated to a cluster algebra over the complex numbers, and its relationship to compatible torus actions.
Zwicknagl, Sebastian
core
Graded geometry and Poisson reduction [PDF]
AIP Conference Proceedings, 2009 We previously extended the Marsden-Ratiu reduction theorem in Poisson geometry by means of graded geometry (see Part I of Arxiv:1009.0948) . In this note we provide the background material about graded geometry necessary for the proof. Further, we provide an alternative algebraic proof.
A. S. Cattaneo +5 more
openaire +3 more sources
Actuating and Sensing Composites of Liquid Crystal Elastomers and Poly(ionic liquid)s
Advanced Functional Materials, EarlyView.Ionic conductive, mechanically tough, flexible, and stretchable filaments of a composite material comprising a liquid crystal elastomer and a poly(ionic liquid) are produced through 3D printing, which exhibit large actuation strain under stimulation and electrical resistance variation in response to deformation or environmental condition changes. Their
Zeping Liu +6 more
wiley +1 more source
Drinfel’d double of bialgebroids for string and M theories: dual calculus framework
Journal of High Energy PhysicsWe extend the notion of Lie bialgebroids for more general bracket structures used in string and M theories. We formalize the notions of calculus and dual calculi on algebroids.
Aybike Çatal-Özer +2 more
doaj +1 more source
Stochastic Geometry-Based Modeling and Analysis of Citizens Broadband Radio Service System
IEEE Access, 2017 In this paper, we model and analyze a cellular network that operates in the licensed band of the 3.5-GHz spectrum and consists of a licensed and an unlicensed operator.
Priyabrata Parida +2 more
doaj +1 more source