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image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Acta Mathematica Hun...arrow_drop_down
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
Acta Mathematica Hungarica
Article . 1985 . Peer-reviewed
License: Springer TDM
Data sources: Crossref
image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
zbMATH Open
Article . 1985
Data sources: zbMATH Open
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On the density of finite packings

Authors: Wills, J. M.;

On the density of finite packings

Abstract

Let \({\mathcal C}^ d\) denote the set of compact convex sets in the Euclidean d-space \(E^ d\). Let V(K) be the volume of any \(K\in {\mathcal C}^ d\). Further let \({\mathcal C}^ d_ k\) denote the set of \(K\in {\mathcal C}^ d\) which contains k translates \(B^ d_ 1,...,B^ d_ k\) of \(B^ d\) with \(B^ d_ i\cap B^ d_ j=\emptyset\) for \(i\neq j\). Here \(B^ d\) is the unit ball and \(V(B^ d)=\omega_ d\). For each \(K\in {\mathcal C}^ d_ k\) let \(\delta (K)=k\omega_ d/V(K),\) and put \(\delta^ d_ k=\max_{K\in {\mathcal C}^ d_ k}\delta (K)=\max_{K\in {\mathcal C}^ d_ k}\{k\omega_ d/V(K)\}.\) The following result is proved: There exist P, \(Q\in {\mathcal C}^ 3\) such that \(P+B^ 3\in {\mathcal C}^ 3_{55},\) \(Q+B_ 3\in {\mathcal C}^ 3_{56}\) with \(\delta (P+B^ 3)=0.6699<0.6707=\delta (S_{55}+B^ 3)\leq S^ 3_{55}\) and \(\delta (S_{56}+B^ 3)=0.6707<0.6710=\delta (Q+B^ 3)\leq \delta^ 3_{56}\) if the centres of the translates lie on a line segment \(S_ k.\) \(S_ k+B^ d\) forms a ''sausage'' with \(V(S_ k+B^ d)=2(k- 1)\omega_{d-1}+\omega_ d.\)

Keywords

density of finite packings, Inequalities and extremum problems involving convexity in convex geometry, Packing and covering in \(n\) dimensions (aspects of discrete geometry)

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
11
Average
Top 10%
Average
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