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math.GT2024
Torsion at the Threshold for Mapping Class Groups
Solomon Jekel, Rita Jiménez Rolland
The mapping class group of a closed orientable surface of genus with one marked point can be identified, by the Nielsen action, with a subgroup of the group of…
math.GT2024
On the dimension of Harer's spine for the decorated Teichmüller space
Nestor Colin, Rita Jiménez Rolland, Porfirio L. León Álvarez +1
In \cite{Ha86} Harer explicitly constructed a spine for the decorated Teichmüller space of orientable surfaces with at least one puncture and negative Euler characteristic. In this…