Results 71 to 80 of about 2,769 (160)

Comparing the Hausdorff and packing measures of sets of small dimension in metric spaces [PDF]

open access: yesMonatshefte für Mathematik, 2010
The author gives a new estimate for the ratio of \(s\)-dimensional Hausdorff measure \({\mathcal H}^s\) and (radius-based) packing measure \({\mathcal P}^s\) of a set in any metric space. The estimate is that the infimum of the ratio \(c(s,X)\) satisfies \(c(s,X) \geq 1+(2-\frac{3}{2^{1/s}})^s\), where ...
openaire   +2 more sources

Biomolecular Topology: Modelling and Analysis. [PDF]

open access: yesActa Math Sin Engl Ser, 2022
Liu J, Xia KL, Wu J, Yau SS, Wei GW.
europepmc   +1 more source

Complete positivity and distance-avoiding sets. [PDF]

open access: yesMath Program, 2022
DeCorte E, Filho FMO, Vallentin F.
europepmc   +1 more source

On entropy and Hausdorff dimension of measures defined through a non-homogeneous Markov process

open access: yes, 2003
In this work we study the Hausdorff dimension of measures whose weight distribution satisfies a markov non-homogeneous property. We prove, in particular, that the Hausdorff dimensions of this kind of measures coincide with their lower R\'enyi dimensions (
Batakis, Athanasios
core  

The fractal brain: scale-invariance in structure and dynamics. [PDF]

open access: yesCereb Cortex, 2023
Grosu GF   +8 more
europepmc   +1 more source

A multiscale generative model to understand disorder in domain boundaries. [PDF]

open access: yesSci Adv, 2023
Dan J   +6 more
europepmc   +1 more source

The density theorem and Hausdorff inequality for packing measure in general metric spaces

open access: yesIllinois Journal of Mathematics, 1995
There are two basic mechanisms (diameter method and radius method) for extending the definition of Euclidean packing measure to general metric spaces. Although the diameter method has received the most attention in the literature, we show that it is generally inferior to the radius method in preserving the desirable properties of Euclidean packing ...
openaire   +3 more sources

Neural network-assisted automated image registration for MRI-guided adaptive brachytherapy in cervical cancer. [PDF]

open access: yesZ Med Phys, 2022
Ecker S   +8 more
europepmc   +1 more source

Hausdorff measures and packing premeasures

open access: yesHausdorff measures and packing premeasures
We estimate the HausdorR measures and the packing premeasures of symmetric generalized Cantor sets in the d-dimensional Euclidean space R^d. Two simple estimations will be obtained. Let φ_1 and φ_2 be two measure functions. Suppose limt_(t→0) φ_2(t)/φ_1(t) = 0, limt_(t→0) φ_2(t)/t^d = ∞, and φ_1(t)/t^d is strictly decreasing as t increases. Then we can
openaire  

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