Siegel der Universität Augsburg

Universität Augsburg
Institut für Mathematik

Siegel der Universität Augsburg

 

Oberseminar Differentialgeometrie

 

Professor Dr. Kai Cieliebak
Universität Augsburg

 
spricht am
 
Montag, 13. April 2026
 
um
 
16 Uhr s.t.
 
im
 
Raum 2004 (L1)
 
über das Thema:
 

»On covering numbers«

Abstract:
For a radius r, the r-covering number of a compact metric space is the smallest number of r-balls covering the space. The following (apparently new) conjecture generalizes Vizing's conjecture from graph theory: The r-covering number of a product, equipped with the maximum metric, is greater or equal to the product of the r-covering numbers. I will provide two pieces of evidence for this conjecture. First, it holds if one of the spaces is a metric graph. Second, its infinitesimal version for r-covering numbers of Finsler manifolds with very small r follows from known results about covering densities by convex sets.

 

Hierzu ergeht herzliche Einladung.
Prof. Dr. Urs Frauenfelder
 

Kaffee, Tee und Gebäck eine halbe Stunde vor Vortragsbeginn im Raum 2006 (L1).



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