
AMS Sectional Meeting Program by Special Session
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1999 Fall Central Sectional Meeting
Austin, TX, October 810, 1999
Meeting #948
Associate secretaries: Susan J Friedlander, AMS susan@math.northwestern.edu
Special Session on Aperiodic Tiling

Friday October 8, 1999, 4:00 p.m.6:50 p.m.
Special Session on Aperiodic Tiling, I
Room 6.122, Robert Lee Moore Hall Organizers: Charles Radin, University of Texas, Austin radin@math.utexas.edu
Lorenzo Sadun, University of Texas, Austin sadun@math.utexas.edu

4:00 p.m.
Selfsimilarity and Invariant Measures in Model Sets.
Robert V Moody*, University of Alberta
(94852100)

4:30 p.m.
Substitution Delone sets.
Jeffrey C. Lagarias*, AT&T
(94852192)

5:00 p.m.
When are two tilings the same?
Charles Radin*, University of Texas at Austin
Lorenzo Sadun, University of Texas at Austin
(9485270)

5:30 p.m.
Cohomology and Ktheory of spaces of tilings.
Ian F Putnam*, University of Victoria
(9483780)

6:00 p.m.
Rotations and the topology of substitution spaces.
Nicholas Ormes*, University of Texas at Austin
(94852193)

6:30 p.m.
Pseudoselfsimilar tilings are MLD from selfsimilar tilings.
Natalie M. Priebe*, Rensellaer Polytechnic Institute
Boris Solomyak, University of Washington
(94852194)

Saturday October 9, 1999, 9:30 a.m.11:20 a.m.
Special Session on Aperiodic Tiling, II
Room 6.122, Robert Lee Moore Hall Organizers: Charles Radin, University of Texas, Austin radin@math.utexas.edu
Lorenzo Sadun, University of Texas, Austin sadun@math.utexas.edu

9:30 a.m.
Diffraction of Stochastic Structures.
Michael Baake*, Unversity of T\"ubingen
(94837162)

10:00 a.m.
Energy spectra and eigenstates of discrete quasiperiodic Schr\"{o}dinger operators.
Uwe Grimm*, Institut f\"{u}r Physik, Technische Universit\"{a}t Chemnitz, Germany
(94881166)

10:30 a.m.
Crystallography of Quasiperiodic Tilings.
Ted Janssen*, University of Nijmegen
(94820238)

11:00 a.m.
Crystallography and Riemann surfaces.
Veit Elser*, Cornell University
(94806203)

Saturday October 9, 1999, 3:00 p.m.5:50 p.m.
Special Session on Aperiodic Tiling, III
Room 6.122, Robert Lee Moore Hall Organizers: Charles Radin, University of Texas, Austin radin@math.utexas.edu
Lorenzo Sadun, University of Texas, Austin sadun@math.utexas.edu

3:00 p.m.
Construction of dual substitution on the stepped surface tiling.
Maki Furukado*, Tsuda College
(9483783)

3:30 p.m.
Tilings from stepped surfaces and dual substitutions.
Shunji Ito*, Tsuda College
(9483782)

4:00 p.m.
A dynamical systems approach to the symmetry properties of aperiodic tilings.
Arthur Robinson*, George Washington University
(94837158)

4:30 p.m.
Optimal Circle Packing in the Hyperbolic Plane.
Lewis P Bowen*, University of Texas
(94851188)

5:00 p.m.
Nonrepetitive tilings.
James Currie*, University of Winnipeg
(94852189)

5:30 p.m.
Old Open Questions: Whither the Einstein?
Chaim GoodmanStrauss*, University of Arkansas
(94852191)

Saturday October 9, 1999, 8:30 p.m.9:30 p.m.
Special Session on Aperiodic Tiling, IV
Room 6.122, Robert Lee Moore Hall Organizers: Charles Radin, University of Texas, Austin radin@math.utexas.edu
Lorenzo Sadun, University of Texas, Austin sadun@math.utexas.edu

8:30 p.m.
Roundtable discussion.
Inquiries: meet@ams.org

