Workshop on Geometric Constraints: Materials, Graphs and Matroids, Rigidity and Packings

July 10 - 14, 2023, The Fields Institute

Description

This workshop will showcase advances related to the Fields thematic program on geometric constraint systems, framework rigidity and distance geometry. Particular topics of interest include the geometric and combinatorial rigidity and global rigidity of structures, distance geometry and semidefinite programming and applications, for example in soft matter physics and in protein conformation determination.

In-person participants are welcome to submit abstracts for consideration for contrubuted talks, please submit your abstracts to:

.
Join us online via: https://zoom.us/j/93184898121
(Zoom meeting ID: 93184898121)

Schedule

Monday, July 10th, 2023
09:00 to 09:30	Registration Location:Fields Institute, Room 230
09:30 to 10:30	Globally linked vertex pairs in graphs Tibor Jordan, Eötvös University Location:Fields Institute, Room 230
10:30 to 11:00	Coffee
11:00	Open Problem Session Location:Fields Institute, Room 230
12:30	Lunch
14:00 to 15:00	Structural, vibrational, mechanical properties of jammed packings of deformable particles Corey OHern, Yale University Location:Fields Institute, Room 230
15:00 to 15:30	A Tetrahedral Tensegrity Model for Filament Packings Matthias Himmelmann, University of Potsdam Location:Fields Institute, Room 230
15:30 to 16:00	Coffee
16:00 to 17:00	Exploring the Energy Landscape of Disordered Systems through Morphological Indicators Sascha Hilgenfeldt, University of Illinois at Urbana-Champaign Location:Fields Institute, Room 230

Tuesday, July 11th, 2023
09:30 to 10:30	Identifiability of Points and Rigidity of Hypergraphs under Algebraic Constraints Shin-ichi Tanigawa, The University of Tokyo Location:Fields Institute, Room 230
10:30 to 11:00	Coffee
11:00 to 11:30	From repeated distances to the complexity of the union of convex bodies Janos Pach, Renyi Institute of Mathematics Location:Fields Institute, Room 230
11:30 to 12:00	The number of realisations of a rigid graph in Euclidean and spherical geometries Sean Christopher Dewar, University of Bristol Location:Fields Institute, Room 230
12:00 to 12:30	Flip Paths Between Lattice Triangulations William Sims, University of Florida Location:Fields Institute, Room 230
12:30	Lunch
14:00 to 15:00	Three Rigidities of Frameworks and Tensegrities: Universal, Global and Convexly Rigid Robert Connelly, Cornell University Location:Fields Institute, Room 230
15:00 to 15:30	Rigidity for convex polygonal circuits. Zhen (Albert) Zhang, Cornell University Location:Fields Institute, Room 230
15:30	Coffee

Wednesday, July 12th, 2023
09:30 to 10:30	Interaction networks in particulate packings Lou Kondic, New Jersey Institute of Technology Location:Fields Institute, Room 230
10:30 to 11:00	Coffee
11:00 to 11:30	Sparse Incidence Geometries and Pebble Game Algorithms Signe Lundqvist, Umeå University Location:Fields Institute, Room 230
11:30 to 12:00	Count and cofactor matroids of highly connected graphs Csaba Király, Eötöv Loránt Research Network (ELKH) Location:Fields Institute, Room 230
12:00 to 12:30	Infinitesimal rigidity of symmetric bar-joint frameworks with fixed joints Alison La Porta, Lancaster University Location:Fields Institute, Room 230
12:30	Lunch
14:00 to 15:00	Shear jamming in packings of frictional disks Mark Shattuck, The City College of New York Location:Fields Institute, Room 230
15:00 to 15:30	Coffee
15:30 to 16:00	‘Cable' and 'strut’ for a panel-hinge framework Zeyuan He, University of Cambridge Location:Fields Institute, Room 230

Thursday, July 13th, 2023
09:30 to 10:30	Angles in planar frameworks -- an algebraic perspective. Zvi Rosen, Florida Atlantic University Location:Fields Institute, Room 230
10:30 to 11:00	Coffee
11:00 to 11:30	Projective planar graphs and global rigidity Eleftherios Kastis, Lancaster University Location:Fields Institute, Room 230
11:30 to 12:00	Maximum likelihood thresholds of topological graphs Tony Nixon, Lancaster University Location:Fields Institute, Room 230
12:00 to 12:30	Maximum likelihood thresholds of linear concentration models Daniel Bernstein, Tulane University Location:Fields Institute, Room 230
12:30	Lunch
14:00 to 15:00	Counting for rigidity under projective transformations in the plane Brigitte Servatius, Worcester Polytechnic Institute Location:Fields Institute, Room 230
15:00 to 15:30	Rigidity and Tensegrity of Frameworks from Convex Polytopes Martin Winter, University of Warwick Location:Fields Institute, Room 230
15:30 to 16:00	Coffee
16:00 to 17:00	Rigidity of Simplicial Circuits Bill Jackson, Queen Mary University of London Location:Fields Institute, Room 230

Friday, July 14th, 2023
09:30 to 10:30	Invariant Embeddings Steven Gortler, Harvard University Location:Fields Institute, Room 230
10:30 to 11:00	Coffee
11:00 to 11:30	Super Stable Tensegrities and Colin de Verdière Number \nu Ryoshun Oba, The University of Tokyo Location:Fields Institute, Room 230
11:30 to 12:00	Minimally globally rigid graphs Dániel Garamvölgyi, Eotvos Lorand University Location:Fields Institute, Room 230
12:00 to 12:30	Global Rigidity of Line Constrained Frameworks James Cruickshank, University of Galway Location:Fields Institute, Room 230
12:30	Lunch
14:00 to 15:00	Influence of particle size distribution on random close packing Eric Weeks, Emory University Location:Fields Institute, Room 230

Invited Speakers

Name	Affiliation
Robert Connelly	Cornell University
Steven Gortler	Harvard University
Simon Guest	University of Cambridge
Sascha Hilgenfeldt	University of Illinois at Urbana-Champaign
Bill Jackson	Queen Mary University of London
Tibor Jordan	Eötvös University
Lou Kondic	New Jersey Institute of Technology
Corey OHern	Yale University
Brigitte Servatius	Worcester Polytechnic Institute
Mark Shattuck	The City College of New York
Shin-ichi Tanigawa	The University of Tokyo
Eric Weeks	Emory University

Registered Participants

Name	Affiliation
Apoorva Agarwal	University of Wisconsin–Madison
Ahmed Ashraf	University of Toronto
Amena Assem	University of Waterloo
Mortaza Baky Haskuee	The Fields Institute
Kimia Banihashem	Universitat Politècnica de Catalunya
William Bean	Swansea University
Daniel Bernstein	Tulane University
Sofia Bilinska	University of Toronto
Denys Bulavka	Charles University
Prasoon Chakraborty	Lomonosov Moscow State University
Raymond Chew	University of Toronto
Katie Clinch	University of New South Wales
Robert Connelly	Cornell University
James Cruickshank	University of Galway
Sean Christopher Dewar	University of Bristol
Marzieh Eidi	SCaDS AI/ MPI institute
Bolin Gao	University of Toronto
Dániel Garamvölgyi	Eotvos Lorand University
Georg Grasegger	Austrian Academy of Sciences
Hakan Güler	Kastamonu University
Timothy Havel	Massachusetts Institute of Technology
Zeyuan He	University of Cambridge
Sascha Hilgenfeldt	University of Illinois at Urbana-Champaign
Matthias Himmelmann	University of Potsdam
Bill Jackson	Queen Mary University of London
Ijaz Jamil	Abdus Salam School of Mathematical Sciences, GC University, Lahore.
Leo Jiang	University of Toronto
Tibor Jordan	Eötvös University
Eleftherios Kastis	Lancaster University
Csaba Király	Eötöv Loránt Research Network (ELKH)
Lou Kondic	New Jersey Institute of Technology
Alison La Porta	Lancaster University
Jan Legerský	CTU in Prague - Faculty of Information Technology
Signe Lundqvist	Umeå University
Stefano Martiniani	New York University
Rebecca Monks	Lancaster University
Oleg Musin	University of Texas Rio Grande Valley
Georg Nawratil	TU Wien
Tony Nixon	Lancaster University
Ryoshun Oba	The University of Tokyo
Corey OHern	Yale University
MARUFF KEHINDE OLADAPO	GRACELAND COMBINED SCHOOL
Janos Pach	Renyi Institute of Mathematics
Stephen Power
Zvi Rosen	Florida Atlantic University
Andrew Sainsbury	Lancaster University
Bernd Schulze	Lancaster University
Brigitte Servatius	Worcester Polytechnic Institute
Herman Servatius	Worcester Polytechnic Institute
Qays R. Shakir	Middle Technical University
William Sims	University of Florida
Meera Sitharam	University of Florida
Adnan Sljoka	RIKEN
Jack Southgate	University of St Andrews
Shin-ichi Tanigawa	The University of Tokyo
Will Traves	United States Naval Academy
David Urizar	Florida Atlantic University
Nathaniel Vaduthala	Tulane University
Mittu Walia	IIT Roorkee
Joseph Wall	Lancaster University
Dong Wang	Yale University
Fei Wang	University of Waterloo
Shouhong Wang	Indiana U
Eric Weeks	Emory University
Martin Winter	University of Warwick
Yu Xia	Vancouver Island University
Zhen (Albert) Zhang	Cornell University