1 citations · 1 across the 4 of their papers we have counts for
5 papers
Remarks on Finite Subset Spaces
Sadok Kallel, Denis Sjerve
This paper expands on and refines some known and less well-known results about the finite subset spaces of a simplicial complex including their connectivity and their top homol…
Invariant Spin Structures on Riemann Surfaces
Sadok Kallel, Denis Sjerve
We investigate the action of the automorphism group of a closed Riemann surface on its set of theta characteristics (or spin structures). We give criteria for when an automorphism…
On the Group of Automorphisms of Cyclic Covers of the Riemann Sphere
Sadok Kallel, Denis Sjerve
This note uses some recent calculations of Conder and Bujalance (on classifying finite index group extensions of Fuchsian groups with abelian quotient and torsion free kernel) in o…
On the Topology of Fibrations with Section and Free Loop Spaces
Sadok Kallel, Denis Sjerve
We relate the brace products of a fibration with section to the differentials in its serre spectral sequence. In the particular case of free loop fibrations, we establish a link be…
Genus Zero Actions on Riemann Surfaces
Sadok Kallel, Denis Sjerve
In this paper we determine all finite groups G that can act on some compact Riemann surface M with the property that if H is any non-trivial subgroup of G, then the orbit surface M…