15 citations · 28 across the 7 of their papers we have counts for
7 papers
Pencils on real curves
Marc Coppens, Johannes Huisman
We consider coverings of real algebraic curves to real rational algebraic curves. We show the existence of such coverings having prescribed topological degree on the real locus. Fr…
The moduli space of stable vector bundles over a real algebraic curve
Indranil Biswas, Johannes Huisman, Jacques C. Hurtubise
We study the spaces of stable real and quaternionic vector bundles on a real algebraic curve. The basic relationship is established with unitary representations of an extension Z/2…
Automorphisms of real rational surfaces and weighted blow-up singularities
Johannes Huisman, Frédéric Mangolte
Let X be a singular real rational surface obtained from a smooth real rational surface by performing weighted blow-ups. Denote by Aut(X) the group of algebraic automorphisms of X i…
The group of automorphisms of a real rational surface is n-transitive
Johannes Huisman, Frédéric Mangolte
Let X be a rational nonsingular compact connected real algebraic surface. Denote by Aut(X) the group of real algebraic automorphisms of X. We show that the group Aut(X) acts n-tran…
Rational real algebraic models of topological surfaces
Indranil Biswas, Johannes Huisman
Comessatti proved that the set of real points of a rational real algebraic surface is either a nonorientable surface, or the two-sphere, or the torus. Conversely, it is easy to see…
Every connected sum of lens spaces is a real component of a uniruled algebraic variety
Johannes Huisman, Frédéric Mangolte
Let M be a connected sum of finitely many lens spaces, and let N be a connected sum of finitely many copies of S^1xS^2. We show that there is a uniruled algebraic variety X such th…