Results 1 to 10 of about 144,663 (264)

Packing dimension of mean porous measures [PDF]

open access: yesJournal of the London Mathematical Society, 2009
We prove that the packing dimension of any mean porous Radon measure on $\mathbb R^d$ may be estimated from above by a function which depends on mean porosity. The upper bound tends to $d-1$ as mean porosity tends to its maximum value.
Beliaev, D.   +6 more
core   +8 more sources

On the densest packing of polycylinders in any dimension [PDF]

open access: yesDiscrete & Computational Geometry, 2016
Using transversality and a dimension reduction argument, a result of A. Bezdek and W. Kuperberg is applied to polycylinders $\mathbb{D}^2\times \mathbb{R}^n$, showing that the optimal packing density is $\pi/\sqrt{12}$ in any dimension.Comment: Edited to
Kusner, Wöden
core   +7 more sources

The sphere packing problem in dimension 24 [PDF]

open access: yesAnnals of Mathematics, 2017
Building on Viazovska's recent solution of the sphere packing problem in eight dimensions, we prove that the Leech lattice is the densest packing of congruent spheres in twenty-four dimensions and that it is the unique optimal periodic packing.
Cohn, H.   +4 more
core   +7 more sources

Randomness extraction and asymptotic Hamming distance [PDF]

open access: yesLogical Methods in Computer Science, 2013
We obtain a non-implication result in the Medvedev degrees by studying sequences that are close to Martin-L\"of random in asymptotic Hamming distance. Our result is that the class of stochastically bi-immune sets is not Medvedev reducible to the class of
Cameron E. Freer, Bjoern Kjos-Hanssen
doaj   +4 more sources

On distance sets, box-counting and Ahlfors-regular sets [PDF]

open access: yesDiscrete Analysis, 2017
On distance sets, box-counting and Ahlfors-regular sets, Discrete Analysis 2017:9, 22 pp. A well-known problem of Falconer, a sort of continuous analogue of the Erdős distinct-distance problem, asks how large the Hausdorff dimension of a Borel subset of
Pablo Shmerkin
doaj   +4 more sources

The Second Generalization of the Hausdorff Dimension Theorem for Random Fractals

open access: yesMathematics, 2022
In this paper, we present a second partial solution for the problem of cardinality calculation of the set of fractals for its subcategory of the random virtual ones.
Mohsen Soltanifar
doaj   +1 more source

Packing dimensions of basins generated by distributions on a finite alphabet

open access: yesЖурнал Белорусского государственного университета: Математика, информатика, 2021
We consider a space of infinite signals composed of letters from a finite alphabet. Each signal generates a sequence of empirical measures on the alphabet and the limit set corresponding to this sequence.
Victor I. Bakhtin, Bruno Sadok
doaj   +1 more source

Optimizing e-commerce warehousing through open dimension management in a three-dimensional bin packing system [PDF]

open access: yesPeerJ Computer Science, 2023
In the field of e-commerce warehousing, maximizing the utilization of packing bins is a fundamental goal for all major logistics enterprises. However, determining the appropriate size of packing bins poses a practical challenge for many logistics ...
Jianglong Yang   +6 more
doaj   +2 more sources

Multifractal phenomena and packing dimension [PDF]

open access: yesRevista Matemática Iberoamericana, 2019
We undertake a general study of multifractal phenomena for functions or measures. We show that the existence of several kinds of multifractal functions or measures can be easily deduced from an abstract statement, leading to new results. This general approach does not work for Fourier or Dirichlet series.
Bayart, Frédéric, Heurteaux, Yanick
openaire   +4 more sources

On the Fractal Measures and Dimensions of Image Measures on a Class of Moran Sets

open access: yesMathematics, 2023
In this work, we focus on the centered Hausdorff measure, the packing measure, and the Hewitt–Stromberg measure that determines the modified lower box dimension Moran fractal sets. The equivalence of these measures for a class of Moran is shown by having
Najmeddine Attia, Bilel Selmi
doaj   +1 more source

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