Automorphisms of Riemann Surfaces and Related Topics
Pennsylvania State University, University Park, PA - October 24-25, 2009
AMS Info, Organizers, Invitation and Abstract Submission
Organizers:
Description of the session
Automorphism groups of surfaces have been
studied for many years with major results dating back to Klein and Wiman. In
recent years there has been a major revival in this area mainly due to the
great advances in computer algebra systems, such as GAP, and the advances in
finite group theory such as the classification of finite simple groups.
Moreover the area has strong links to topology, number theory and
combinatorics in the area of Teichm\"uller spaces, mapping class groups and
the Grothendieck-Teichm\"uller theory of Dessins D'enfants. The goal of this
session is to explore recent advances in this area and applications to other
areas of mathematics. Topics of the session include, but are not limited to:
Topics suggested for special attention at the Penn State conference
- more on the dictionary between categories e.g., finding the equation of surfaces
- group theoretic computational methods
- action of the mapping class group on Teichmuller space including actions on Teichmuller discs
- Kleinian Groups
- Veech groups
- Riemann surfaces and vector bundles - moduli spaces
- Riemann surfaces of infinite type
- Fields of definition and moduli fields
- Jacobians of curves with automorphisms
Tucson Topics
- Compact Riemann surfaces and their automorphisms,
- Hurwitz curves, and quasiplatonic surfaces,
- Klein surfaces and their automorphisms,
- Galois extensions of function fields,
- Finite subgroups of mapping class groups,
- Defining equations for surfaces,
- Strong symmetric genus of groups,
- Genus spectra of families of groups,
- Automorphisms of curves of over arbitrary fields
- Applications to moduli and Teichm\"uller problems
Location of movie shown by Martson Conder
Video and the paper showing 3D visualisations of regular maps.
These were both created by Jarke J. van Wijk, from Eindhoven. http://www.win.tue.nl/~vanwijk/regularmaps
List of talks, ordered by presenter
| Presenter and authors |
Title (click for abstract) |
Links |
Gabriel Bartolini
Antonio F. Costa
Milagros Izquiedo* |
On the connectedness of the branch locus of the moduli space of Riemann Surfaces I. |
slides |
Gabriel Bartolini*
Milagros Izquiedo |
On the connectedness of the branch locus of the moduli space of Riemann Surfaces II. |
|
Allen Broughton*,
Chris Judge |
Flat Surfaces, Teichmueller Discs, Veech Groups, and the Veech Tessellation |
slides |
Marston Conder*,
Emilio Bujalance,
Francisco Javier Cirre |
Extendability of group actions on non-orientable surfaces |
slides |
Emilio Bujalance,
Francisco Javier Cirre* |
A family of Riemann surfaces with orientation reversing automorphisms (for consideration) |
slides |
Ernesto Girondo*,
David Torres |
Algebraic equations of genus 2 Riemann surfaces with a hyperelliptic uniform dessin |
slides |
J. Gilman*,
L. Keen |
Automorphisms of Pants and Tori:
Primitives and Palindromes |
|
| Yolanda Fuertes, Gabino Gonzalez-Diez*, Ruben A Hidalgo, Maximiliano Leyton |
The full automorphism group of a family of generalized Fermat curves |
slides |
| Michael Jackson |
Which $(2,3,r)$ triangle groups give rise to the strong symmetric genus of some finite group? |
slides |
| Gareth Jones, Yolanda Fuertes (delivered by Gabino Gonzalez-Diez) |
Beauville surfaces and finite groups |
slides
paper |
| Ewa Kozlowska-Walania |
Pairs of symmetries of Riemann surfaces |
slides |
| Yaacov Kopeliovich |
Towards Thomae formula for general cyclic covers of the Sphere |
slides
preprint |
| Jennifer Paulhus (unable to attend) |
Decomposing Jacobian varieties using automorphism groups |
slides |
| Pisanski Toma\v z, Alen Orbani\' c, Daniel Pellicer*, Thomas W Tucker, Arjana \v Zitnik |
Edge-transitive tessellations with non-negative Euler characteristic |
slides |
| Emma Previato |
Riemann surfaces with automorphisms: Aspects of dynamics |
|
Ernesto Girondo,
David Torres* |
Genus 2 Bely\u{\i} surfaces with a unicellular uniform dessin |
slides |
| Tom Tucker |
Seeing symmetries of surfaces in 3-space |
slides |
| Ewa Tyszkowska |
Application of theory of coverings in a study of Riemann surfaces |
|
Anthony Weaver*,
Cormac O'Sullivan |
The largest non-genus of a cyclic group |
slides
paper |
Gareth Jones,
M. Streit,
Jurgen Wolfart*
|
Wilson's
operations on regular dessins and cyclotomic fields of definition |
slides |
| James Wolper (unable to attend) |
Automorphism Groups and Moduli Spaces of Vector Bundles |
|
Aaron Wootton*,
J.W. Anderson |
Bounding the Number of Group Actions on a Surface of Fixed Genus |
|
Coy L.May,
Jay Zimmerman* |
The 2-groups of odd strong symmetric genus |
slides |
|