Results 1 to 10 of about 1,819,045 (182)
Geometry of Control-Affine Systems [PDF]
Symmetry, Integrability and Geometry: Methods and Applications, 2009 Motivated by control-affine systems in optimal control theory, we introduce the notion of a point-affine distribution on a manifold X – i.e., an affine distribution F together with a distinguished vector field contained in F.
Jeanne N. Clelland +2 more
doaj +6 more sources
Emergence of scale-free close-knit friendship structure in online social networks. [PDF]
PLoS ONE, 2012 Although the structural properties of online social networks have attracted much attention, the properties of the close-knit friendship structures remain an important question.
Ai-Xiang Cui +4 more
doaj +6 more sources
Singularity Classes of Special 2-Flags [PDF]
Symmetry, Integrability and Geometry: Methods and Applications, 2009 In the paper we discuss certain classes of vector distributions in the tangent bundles to manifolds, obtained by series of applications of the so-called generalized Cartan prolongations (gCp).
Piotr Mormul
doaj +5 more sources
COVID-19 in Saudi Arabia: An Overview
Frontiers in Public Health, 2022 BackgroundSaudi Arabia, a prominent Arabian country, has 35. 3 million persons living in 2.2 million square kilometers, undergone serious threats recently due to the COVID-19 pandemic.
Asharaf Abdul Salam +2 more
doaj +1 more source
Qualitative Theory of Dynamical Systems, 2022 In discrete dynamical system $(X, f)$ where $X$ is a topological space and $f \in C(X,X)$, three notions of distributional chaos were defined. They were denoted by $DC1, DC2$ and $DC3$. For interval systems such three notions coincide and they will be denoted by DC-chaos. Generally speaking we have $DC1 \subseteq DC2 \subseteq DC3$-chaos.
Francisco Balibrea, Lenka Rucká
openaire +3 more sources
Local Distributed Decision [PDF]
2011 IEEE 52nd Annual Symposium on Foundations of Computer Science, 2011 A central theme in distributed network algorithms concerns understanding and coping with the issue of locality. Inspired by sequential complexity theory, we focus on a complexity theory for distributed decision problems. In the context of locality, solving a decision problem requires the processors to independently inspect their local neighborhoods and
Fraigniaud, Pierre +2 more
openaire +3 more sources
Asymptotical expansions in the Kubilius theorem of large deviations
Lietuvos Matematikos Rinkinys, 2005 In the present paper, a local theorem of large deviations for arithmetic functions defined in Knopfmacher’s semigroup is obtained.
Rimantas Skrabutėnas
doaj +3 more sources
PLoS ONE, 2022 Species distributions are affected by landscape structure at different spatial scales. Here we study how the interplay between dispersal at different spatial scales and landscape connectivity and composition affect local species dynamics.
Lucas D. Fernandes +3 more
doaj +2 more sources
Spectral Energy Distributions for 258 Local Volume Galaxies
The Astronomical Journal, 2023 We present model spectral energy distribution (SED) fits to ultraviolet/optical/infrared observations for the 258 nearby galaxies in the Local Volume Legacy survey, a sample dominated by lower-luminosity dwarf irregular systems.
Daniel A. Dale +5 more
doaj +1 more source
Entropy, 2023 Typical human-scaled considerations of thermodynamic states depend primarily on the core of associated speed or other relevant distributions, because the wings of those distributions are so improbable that they cannot contribute significantly to averages.
Christopher Essex, Bjarne Andresen
doaj +1 more source