FRG Workshop on Geometric Methods for Analyzing Discrete Shapes

Harvard University, May 7-9 (Friday-Sunday), 2021 virtually on Zoom


The aim of the workshop is to bring together a community of researchers in mathematics, computer science and data sciences who develop theoretical and computational models to characterize shapes and analysis of image data.

This workshop is part of the NSF FRG project: Geometric and Topological Methods for Analyzing Shapes.

The first half of the workshop will feature talks aimed at graduate students, newcomers and a broad spectrum of audiences. Christopher Bishop (Stony Brook) and Keenan Crane (Carnegie Mellon) will each give two featured talks. The remaining part will have both background and research talks. There will also be organized discussions of open problems and potential applications.


Registration is free and open to everyone. The link for the registration could be found in:
Official webpage of the FRG workshop

Featured lectures:

Christopher Bishop, Stony Brook
Keenan Crane, Carnegie Mellon

Speakers include:

Miri Ben-Chen, Technion – Israel Institute of Technology
Alexander Bobenko, Technische Universität Berlin, Germany
Ulrike Buecking, Free University, Germany
Nadav Dym, Duke University
Ivan Izmestiev, Vienna University of Technology
Yanwen Luo, Rutgers
Max Wardetzky, University of Goettingen
Stephan Tillmann, The University of Sydney
Xu Xu, Wuhan University

Click for abstracts of the 1-hour talks and abstracts of the short talks

Schedule (Eastern Daylight Time):

Friday, May 7th

11:00-11:05 Welcome Opening
11:05-12:05 Christopher Bishop: Mappings and Meshes: connections between continuous and discrete geometry I video
12:15-13:15 Keenan Crane: Geometry Processing with Intrinsic Triangulations I video
13:30-14:30 Alexander Bobenko Orthogonal ring patterns
14:45-15:45 Break
16:00-17:00 Contributed Talks: by Hana Dal Poz Kourimska ( video), Hasan Pourmahmood-Aghababa ( video), Xiaoping Zhu ( video)
17:15-18:15 Yanwen Luo: The deformation space of geodesic triangulations and Tutte’s embedding video
18:30-19:30 Stephan Tillmann: Canonical cell decompositions for punctured real projective surfaces video
19:45-20:45 Xu Xu: Rigidity and deformation of discrete conformal structures on polyhedral surfaces video

Saturday, May 8th

11:00-12:00 Christopher Bishop: Mappings and Meshes: connections between continuous and discrete geometry II video
12:15-13:15 Keenan Crane: Geometry Processing with Intrinsic Triangulations II video
13:30-14:30 Max Wardetzky: The Bilaplacian on polyhedral surfaces — theory and applications video
14:45-15:45 Contributed Talks: by Emil Saucan ( video), Matteo Raffaelli ( video), Matthijs Ebbens ( video)
16:00-17:00 Problems and Applications discussion

Sunday, May 9th

11:00-12:00 Miri Ben-Chen: Parametetizarion-based remeshing for mesh realization video
12:15-13:15 Ivan Izmestiev: A discrete spherical Laplacian video
13:30-14:30 Ulrike Buecking: Convergence results for discrete conformal maps based on conformally equivalent triangular lattices and circle patterns video
14:45-15:45 Nadav Dym: Computational theory of graphs, sets and rigid sets video
16:00-17:00 Problems and Applications discussion


David Glickenstein (University of Arizona)
Joel Hass (University of California, Davis)
Patrice Koehl (University of California, Davis)
Feng Luo (Rutgers University, New Brunswick)
S.-T. Yau (Harvard University)


We are grateful to the National Science Foundation for supporting this workshop through the NSF FRG program.

Code of conduct policy

Please take note of the NSF Code-of-Conduct Policy .