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GEOMETRY and PHYSICS on GRAPHS: This is the wiki for a geometry, physics, and graph theory NSF Research Experience for Undergraduates at Canisius College. Everyone is welcome to read our work but you must login to add things and to make changes. We offer login privileges to those in need; please contact us at the Canisius College Department of Mathematics and Statistics: [1] (http://www.canisius.edu/math/)

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Table of contents

Summer 2010 (June 14 - August 6, 2010)

REU2010 photo by Kristin Etu
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REU2010 photo by Kristin Etu

REU2010 is mentored by Stratos Prassidis and Terry Bisson, with students Nathan Fox (University of Minnesota), Casey Green (University of Rochester), Richard Gustavson (Cornell University), Tejas Shah (Tufts University), Meryl Spencer (Grinnell University), Joseph Thurman (Vanderbilt University), Kelsey Watson (Valparaiso University), and Elizabeth Wicks (University of Washington-Seattle).


Preliminary Reports

Cheeger Constants and Graph Spectra by Tejas Shah and Joseph Thurman

The Ihara-Zeta Function on Graphs by Casey Green and Elizabeth Wicks

Cyclic Cayley Graphs by Meryl Spencer

Cayley Graphs of Symmetric Groups by Kelsey Watson

Cayley Graphs and Spectra of Semidirect Products by Nathan Fox

Simplicial Complexes and Laplacians by Richard Gustavson

Using SAGE for Graphs

Some local literature resources

Some topical pages here

Activities for REU 2010

Page listing the seminar talks given: Seminars10

Other activities: Summer10


You can see the announcement for Summer 2010 at [2] (http://www.canisius.edu/~kahngb/reu/)

"Problems worthy of attack prove their worth by hitting back." -Piet Hein

Summer 2009

REU2009 photo by Kristin Etu
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REU2009 photo by Kristin Etu

REU2009 is mentored by Stratos Prassidis and B.J. Kahng, with students Robert Abramovic (Johns Hopkins University), Greg Gauthier (Vanderbilt University), Laura Janssen (University of Nebraska), Jonathan Jaquette (Swarthmore College), Ann Johnston (Harvey Mudd College), Andrew Reynolds (University of California, Los Angeles), Mollie Stein (Barnard College), and Amelia Wallace (University of North Carolina).


Activities for REU 2009

Page listing the seminar talks given: Seminars09

We had (on 7/22) a joint mini-conference with the REU group at Rochester Institute of Technology: Canisius-RIT Joint Conference


Results

Heat kernel and harmonic maps on infinite graphs by Robert Abramovic
Cellular automata and spectral invariants of graphs by Greg Gauthier
Extension of Heisenberg-type groups using cocycles by Laura Janssen
Embedding of topological dynamical systems into symbolic and product symbolic dynamical systems by Jonathan Jaquette
C*-algebras associated with products of graphs by Ann Johnston and Andrew Reynolds
Ihara Zeta function of infinite graphs by Mollie Stein
Expander graphs and their applications by Amelia Wallace

List of Research Reports, Preprints, and Talk Slides from REU2009 can be found at: [3] (http://www.canisius.edu/~kahngb/reu/reuresults.html)

Here is a link to some other research on random walks this summer: Robert Makin


You can see the announcement for Summer 2009 at [4] (http://www.canisius.edu/~kahngb/reu/reu09.html)

Summer 2008

REU 2008 photo by Kristin Etu
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REU 2008 photo by Kristin Etu

REU2008 is mentored by Terry Bisson and B.J. Kahng, with students emily bargar (University of Chicago), Ari Binder (Williams College), Vivian Healey (University of Notre Dame), Rachel Hunter (Cornell University), Colin Klaus (Vanderbilt University), Brian Leary (Carnegie Mellon University), Josh O'Rourke (Reed College), and Gabrielle Paoletti (Canisius College).

Here is a list of major findings from our summer research:

Tilings Vivian Healey
Groupoids and Graphs Colin Klaus and Brian Leary
Random Walks on Directed Multigraphs Ari Binder and Josh O'Rourke
Zig-Zag Product information Brian Leary
Hypergraphs emily bargar
Simplicial Complexes Gabrielle Paoletti
Box Products, Box Exponentials and Graph Covering Maps Rachel Hunter

List of Research Reports, Preprints, and Talk Slides from REU2008 can be found at: [5] (http://www.canisius.edu/~kahngb/reu/reuresults.html)

Here are some preliminary reports from the first part of the summer:

Isospectral Graphs emily bargar, Vivian Healey
Cayley Graphs emily bargar
Characteristic Polynomials of Adjacency Matrices of Families of Graphs emily bargar, Vivian Healey, Rachel Hunter, Brian Leary, Gabrielle Paoletti
Fractals and Graphs Vivian Healey
Abstracts for MathFest08

Events for REU08

Here is a page listing links to papers, and lists of pdf files on one of the computers in our work room Some references for REU 2008

Here is a page listing conferences (and journals) Future Conferences for Student Presentations

You can see the announcement for Summer 2008 at [6] (http://www.canisius.edu/~kahngb/reu/reu08.html)

Summer 2007

REU 2007 photo by Kristin Etu
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REU 2007 photo by Kristin Etu

REU2007 was mentored by Terry Bisson and Stratos Prassidis

with students Tim Doster,Alicia Hoffmann, Chelsey Cooley, Eric Lownes, Chloe Johnson, Stefan P. Sabo, Alissa Pioli, and Ben Lerman

(from left to right in the picture).

Here are some pages from the work this summer:

New coverings from groups Alissa Pioli, Chelsey Cooley, Chloe Johnson.
The Zig-Zag Product: Background and Examples... Stefan P. Sabo and Ben Lerman
The Heat Kernel of the K-Regular Tree Eric Lownes and Stefan P. Sabo
Fullerenes Alicia Hoffmann and Tim Doster
Generalizing the Zig-Zag Product of Graphs Ben Lerman
Preliminary work for Summer 2007
Events for REU07

Summer 2006

Summer 2006 Here is a link to a page with some overview on our activities.
REU 2006 photo by Kristin Etu
Enlarge
REU 2006 photo by Kristin Etu

The two projects for Summer 2006 were

Spectral gaps in groups and graphs, directed by Stratos Prassidis, and

Cayley graphs and coverings, directed by Terry Bisson.

Participating students were Clara Brasseur, Julia Lazenby, Taylor Coon, Allison Davis, Ryan Grady, Dominic Dotterrer, Samuel Cooper, and Joe Consiglio.

Events for REU06

From Reed Magazine, SUMMER 2008 issue: Julia Lazenby ’08, a mathematics major, received the Class of ’21 Award for the exceptional and creative quality of her thesis, Circulant Graphs and their Spectra. The award is endowed by alumni contributions, and recognizes work “of notable character, involving an unusual degree of initiative and spontaneity.” Lazenby’s thesis adviser, mathematics professor David Perkinson, said Julia’s work “exhibited astounding independence, depth, creativity, and good taste.”

Here is a link to a page of Reed College, and Julia Lazenby's thesis: [7] (http://people.reed.edu/~davidp/homepage/seniors/seniors.html)

Summer 2005

Summer 2005 projects were Covers, Laplacians, and Growth on Graphs, directed by Stratos Prassidis, and

Characteristic polynomials and directed graphs, directed by Terry Bisson.

PICTURE (http://www2.canisius.edu/~prasside/reu_2005/pictures/PIC1.JPG)

Participating students in 2005 were Jordan Volz, Diane Lunman, Angelo Chandler, Robert Marciniak, Tricia Profic, Brian Meagher, David Mittiga, and Jack Wessel.

Events for REU05


Space for this website has been generously provided by Dr. Dewey J. Bayer, Professor of Psychology, Canisius College.


National Science Foundation (REU listings): [8] (http://www.nsf.gov/crssprgm/reu/list_result.cfm?unitid=5044)

American Mathematical Society (REU listings): [9] (http://www.ams.org/employment/reu.html)

Here is a link to Buffalo Blue Bicycles, a local bike-sharing project [10] (http://www.buffalobluebicycle.org/)