This workshop will be offered virtually. The in-person meeting has been cancelled due to the COVID-19 outbreak. A schedule for virtual talks will be posted soon. Accepted participants will be notified how to access the virtual presentations.
Organizing Committee
- John Bowers
James Madison University - Philip Bowers
The Florida State University - Robert Connelly
Cornell University - Steven Gortler
Harvard - Miranda Holmes-Cerfon
CIMS - Anthony Nixon
Lancaster University
Abstract
This workshop brings together two distinct streams of mathematics - on the one hand, the classical rigidity theory of bar-joint frameworks in combinatorics and discrete geometry, and on the other the theory of generalized circle packings that arose from the study of 3-manifolds in geometric topology.
Combinatorial and Geometric rigidity theory is concerned with the local and global uniqueness of congruence classes of frameworks as solutions to their underlying geometric constraint system.
The focal point of circle packing theory is the Koebe-Andre'ev-Thurston Theorem that gives conditions that guarantee the existence and rigidity of circle packings on closed surfaces in the pattern of a given triangulation of the surface.
A scattering of results in recent years has started to forge connections between these research areas. The main aim of the workshop is to develop a cross-fertilization of such ideas, with particular emphasis on the rigidity of inversive distance packings. As well as presentations on cutting edge research, the workshop will be an opportunity for new collaborations to emerge.
Confirmed Speakers & Participants
Talks will be presented virtually or in-person as indicated in the schedule below.
- Speaker
- Poster Presenter
- Attendee
- Virtual Attendee
-
Karim Adiprasito
Hebrew University of Jerusalem
-
Victor Alexandrov
Sobolev Institute of Mathematics
-
Ahmed Umer Ashraf
University of Western Ontario
-
Daniel Bernstein
MIT
-
Alexander Bobenko
Technische Universität Berlin
-
Ciprian Borcea
Rider University
-
Philip Bowers
The Florida State University
-
John Bowers
James Madison University
-
Sarah Brewer
Alabama School of Mathematics and Science
-
Sebastian Cioaba
University of Delaware
-
Katie Clinch
University of Tokyo
-
Robert Connelly
Cornell University
-
Tommaso Cremaschi
university of southern california
-
James Cruickshank
National University of Ireland
-
Balázs Csikós
Eötvös University/Rényi Inst. of Mathematics
-
Ellie Dannenberg
Pomona College
-
Shane Daveler
James Madison University
-
Sean Dewar
RICAM
-
Veit Elser
Cornell University
-
Thomas Fernique
CNRS & Université Sorbonne Paris Cité
-
William Floyd
Virginia Tech
-
Tom Gilat
Bar-Ilan University
-
Steven Gortler
Harvard
-
Opal Graham
Florida State University
-
Georg Grasegger
Johann Radon Institute for Computational and Applied Mathematics (RICAM), Austrian Academy of Sciences
-
Xiaofeng Gu
University of West Georgia
-
Xianfeng Gu
Stony Brook University
-
Hakan Guler
Kastamonu University
-
Wesley Hamilton
University of North Carolina, Chapel Hill
-
Joel Hass
University of California, Davis
-
Zeyuan He
University of Cambridge
-
Alexander Heaton
MPI MiS, TU-Berlin
-
John Hewetson
Lancaster University
-
Miranda Holmes-Cerfon
CIMS
-
Ivan Izmestiev
Vienna University of Technology
-
Bill Jackson
Queen Mary University of London
-
Tibor Jordán
Eötvös Loránd University
-
Eleftherios Kastis
Lancaster University
-
Csaba Király
MTA-ELTE Egerváry Research Group
-
Aleksandr Kolpakov
University of Neuchâtel
-
Alex Kontorovich
Rutgers University
-
Kaie Kubjas
Aalto University
-
Wai Yeung Lam
Université du Luxembourg
-
Daniel Lautzenheiser
Cerro Coso College
-
Feng Luo
Rutgers University
-
Yanwen Luo
University of California, Davis (Davis, CA, US)
-
Sabetta Matsumoto
Georgia Institute of Technology
-
Dane Mayhook
Iowa State University
-
Yulia Meshkova
University of Helsinki
-
Malavika Mukundan
University of Michigan
-
Georg Nawratil
TU Wien
-
Eran Nevo
Hebrew University
-
Anthony Nixon
Lancaster University
-
Ryoshun Oba
The University of Tokyo
-
Daria Pchelina
ENS Paris
-
Stephen Power
Lancaster University
-
Orit Raz
Hebrew University of Jerusalem
-
Lorenzo Ruffoni
Florida State University
-
Idzhad Sabitov
Lomonosov Moscow State University
-
Jean-Marc Schlenker
University of Luxembourg
-
Bernd Schulze
Lancaster University
-
Brigitte Servatius
Worcester Polytechnic Institute
-
Qays Shakir
Middle Technical University
-
Kiumars Sharifmoghaddam
TU Wien
-
William Sims
University of Florida
-
Meera Sitharam
University of Florida
-
Boris Springborn
TU Berlin
-
Kenneth Stephenson
University of Tennessee
-
Ileana Streinu
Smith College
-
Shin-ichi Tanigawa
University of Tokyo
-
Louis Theran
University of St Andrews
-
Will Traves
United States Naval Academy
-
Joseph Wall
Lancaster University
-
Elias Wegert
Freiberg University of Mining and Technology
-
Walter Whiteley
York University
-
Bill Wood
University of Northern Iowa
-
Tianqi Wu
Harvard
-
Xu Xu
Wuhan University
-
Zhen Zhang
Cornell University
-
Ze Zhou
Hunan University
-
Xiaoping Zhu
Rutgers University
Workshop Schedule
Monday, July 6, 2020
Tuesday, July 7, 2020
Wednesday, July 8, 2020
Thursday, July 9, 2020
Friday, July 10, 2020
Lecture Videos
On saturated bi-layered disk shaped tetrahedral packings
Brigitte Servatius
Worcester Polytechnic Institute
July 10, 2020
Quadratic differentials and deformation space of circle patterns on surfaces
Wai Yeung Lam
Université du Luxembourg
July 10, 2020
The interplay between circle packings and subdivision rules
William Floyd
Virginia Tech
July 9, 2020
Rigidity of Intermingled Point and Sphere Configurations
Opal Graham
Florida State University
July 9, 2020
Circle packings on surfaces with complex projective structures
Jean-Marc Schlenker
University of Luxembourg
July 9, 2020
Abel-Jacobi Condition for Quadrilateral Mesh Generation
Xianfeng Gu
Stony Brook University
July 8, 2020
Uniqueness of nonnegative matrix factorizations by rigidity theory
Kaie Kubjas
Aalto University
July 8, 2020
Generic rigidity via many anisotropic subspaces, and higher Laman type theorems
Karim Adiprasito
Hebrew University of Jerusalem
July 6, 2020
Floppy Rigidity- circle packing via discrete schwarzian derivatives
Kenneth Stephenson
University of Tennessee
July 6, 2020