Results 21 to 30 of about 144,663 (264)

Packing-Dimension Profiles and Fractional Brownian Motion [PDF]

open access: yes, 2007
In order to compute the packing dimension of orthogonal projections Falconer and Howroyd (1997) introduced a family of packing dimension profiles ${\rm Dim}_s$ that are parametrized by real numbers $s>0$.
DAVAR KHOSHNEVISAN   +4 more
core   +2 more sources

Symplectic Packing in Dimension 4 [PDF]

open access: yesGeometric And Functional Analysis, 1997
We discuss closed symplectic 4-manifolds which admit full symplectic packings by $N$ equal balls for large $N$'s. We give a homological criterion for recognizing such manifolds. As a corollary we prove that ${\Bbb C}P^2$ can be fully packed by $N$ equal balls for every $N\geq 9$.
openaire   +3 more sources

Spectral Action Models of Gravity on Packed Swiss Cheese Cosmology [PDF]

open access: yes, 2016
We present a model of (modified) gravity on spacetimes with fractal structure based on packing of spheres, which are (Euclidean) variants of the Packed Swiss Cheese Cosmology models. As the action functional for gravity we consider the spectral action of
Ball, Adam, Marcolli, Matilde
core   +3 more sources

Billingsley’s packing dimension [PDF]

open access: yesProceedings of the American Mathematical Society, 2007
For a stochastic process on a finite state space, we define the notion of a packing measure based on the naturally defined cylinder sets. For any two measures ν \nu , γ \gamma , corresponding to the same stochastic process, if \[ F ⊆ { ω ∈ Ω :
openaire   +2 more sources

Patterns formed by chains of magnetic beads [PDF]

open access: yesEPJ Web of Conferences, 2021
Magnetic beads attract each other forming rather stable chains. We consider such chains formed by magnetic beads and push them into a Hele-Shaw cell either from the boundary or from the center.
Borges Danilo S.   +4 more
doaj   +1 more source

Packing dimension profiles and Lévy processes [PDF]

open access: yesBulletin of the London Mathematical Society, 2012
We extend the concept of packing dimension profiles, due to Falconer and Howroyd (1997) and Howroyd (2001), and use our extension in order to determine the packing dimension of an arbitrary image of a general Levy process.
Yimin Xiao   +2 more
openaire   +3 more sources

Scaling properties of the number of random sequential adsorption iterations needed to generate saturated random packing [PDF]

open access: yes, 2016
The properties of the number of iterations in random sequential adsorption protocol needed to generate finite saturated random packing of spherically symmetric shapes were studied.
Cieśla, Michał
core   +2 more sources

Generating dense packings of hard spheres by soft interaction design

open access: yesSciPost Physics, 2018
Packing spheres efficiently in large dimension $d$ is a particularly difficult optimization problem. In this paper we add an isotropic interaction potential to the pure hard-core repulsion, and show that one can tune it in order to maximize a lower ...
Thibaud Maimbourg, Mauro Sellitto, Guilhem Semerjian, Francesco Zamponi
doaj   +1 more source

Comparative Study on the Macroscopic and Microscopic Properties of UHPC Mixed with Limestone Powder and Slag Powder

open access: yesGeofluids, 2021
This paper explores the development laws of the fluidity, compressive strength, and autogenous shrinkage of ultrahigh performance cement (UHPC) mixed with limestone powder (LP) and highly active ground slag powder (SP).
Menghui Yang   +4 more
doaj   +1 more source

METHODOLOGICAL BASIS OF SOLVING SPHERE PACKING PROBLEM: TRANSFORMATION OF KNAPSACK PROBLEM TO OPEN DIMENSION PROBLEM

open access: yesСучасні інформаційні системи, 2019
The subject matter of the paper is the problem of optimal packing of spheres of different dimension into a container of arbitrary geometric shape. The goal is to construct a mathematical model which associates different statements of the problem.
Georgiy Yaskov, Sergiy Shekhovtsov
doaj   +1 more source

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