Meeting Agenda

Date:	May 4, 2017
Location:	DC 1331
Time:	1:30
Chair:	Stephen Mann

1. Acceptance of the Agenda - additions or deletions

2. Coffee Hour

Coffee hour last week:: Thanks, Marta! - thanks!
Coffee hour this week:: Volunteers?
Coffee hour next week:: Volunteers?

3. Forthcoming

Date:	May 11, 2017	May 18, 2017	May 25, 2017	June 1, 2017
Location:	DC 1331 11:30	DC 1331 1:30	DC 3317 1:30	DC 1331 1:30
Chair:	Jade Marcoux-Ouellet	Tyler Nowicki	Reza Adhitya Saputra	Matthew Thorne
Technical Presentation:	Stephen Mann	Jade Marcoux-Ouellet	Tyler Nowicki	Reza Adhitya Saputra

4. Technical Presentation

Craig S. Kaplan	Title : Heesch numbers of convex polygons Abstract: A polygon's Heesch number is the number of times that polygon can be surrounded by rings of copies of itself. Very little is known about which Heesch numbers are possible, and a greater understanding of this problem could shed light on open questions in tiling theory. I will talk about Heesch numbers of convex polygons, with an emphasis on two questions. First, does there exist a convex n-gon for every n with non-trivial Heesch number? Second, what can we say about Heesch numbers of convex pentagons?

Craig S. Kaplan

Title : Heesch numbers of convex polygons
Abstract:
A polygon's Heesch number is the number of times that polygon can be surrounded by rings of copies of itself. Very little is known about which Heesch numbers are possible, and a greater understanding of this problem could shed light on open questions in tiling theory. I will talk about Heesch numbers of convex polygons, with an emphasis on two questions. First, does there exist a convex n-gon for every n with non-trivial Heesch number? Second, what can we say about Heesch numbers of convex pentagons?

5. Discussion Items

6. Action Items

Lab meeting in DC 3317 on May 25. See Helen for the key.

7. Lab Events

8. Conferences and Special Journal Issues

Recent Additions

Upcoming Deadlines

9. Directors' Meeting

10. Seminars and Events

Thursday, May 4, 2017: Seminar * Human Computer Interaction Group<; Overcoming Constraints in Small Screen Touch Input; Aakar Gupta, University of Toronto; 11:00 a.m. * DC 1304

Friday, May 5, 2017: Launch * Graham supercomputer; TBA; 10:30 a.m. * M3 Atrium

Friday, May 5, 2017: Seminar * CrySP Speaker Series on Privacy; Access to Basic Subscriber Information and the Spencer Decision: Disentangling Normative and Technological Questions; Lisa Austin, University of Toronto; 2:00 p.m. * QNC 1502

Saturday, May 6, 2017: Jane's Walk Waterloo Region: Celebrating 50 years of Computer Science at Waterloo; Discover the History of Computer Science at Waterloo; 1:00 p.m. * PHY Atrium; https://cs.uwaterloo.ca/events/janes-walk-waterloo-region-celebrating-50-years-computer-science-cs-uwaterloo

Tuesday, May 9, 2017: Seminar * Algorithms and Complexity Group; Contact Representation of Planar Graphs in 2D and 3D; Stephen Kobourov, University of Arizona; 1:30 p.m. * DC 1304

Also see other Math and CS postings.