activity
19992025
most citedOn the geodesic flow on CAT(0) spaces

1 citations · 1 across the 10 of their papers we have counts for

collaborators

12 papers

math.DG2025

Gluing domains

Charalampos Charitos, Ioannis Papadoperakis, Georgios Tsapogas

In this work we describe a class of subsets of the Euclidean plane which, with the induced length metric, are locally spaces and we show that the gluing of two such subset…

math.MG2023

Geometries on Polygons in the unit disc

Charalampos Charitos, Ioannis Papadoperakis, Georgios Tsapogas

For a family of properly embedded curves in the 2-dimensional disk satisfying certain uniqueness properties, we consider convex polygons $P\subset \m…

math.MG2023

A specific model of Hilbert geometry on the unit disc

Charalampos Charitos, Ioannis Papadoperakis, Georgios Tsapogas

A new metric on the open 2-dimensional unit disk is defined making it a geodesically complete metric space whose geodesic lines are precisely the Euclidean straight lines. Moreover…

math.MG2020

Convexity of asymptotic geodesics in Hilbert Geometry

Charalampos Charitos, Ioannis Papadoperakis, Georgios Tsapogas

If is the interior of a convex polygon in and two asymptotic geodesics, we show that the distance function $d\left(f\left(t\right),g\left(t\right)\right)…

math.GT2017

On the Complex of Separating meridians in Handlebodies

Charalampos Charitos, Ioannis Papadoperakis, Georgios Tsapogas

For a handlebody of genus it is shown that every automorphism of the complex of separating meridians can be extended to an automorphism on the complex of all meridians and…

math.GT2015★ 1 cited

On the geodesic flow on CAT(0) spaces

Charalampos Charitos, Ioannis Papadoperakis, Georgios Tsapogas

Under certain assumptions on CAT(0) spaces, we show that the geodesic flow is topologically mixing. In particular, the Bowen-Margulis' measure finiteness assumption used in recent…