====== The Combinatorics Seminar ====== ===== SPRING & SUMMER 2009 ===== [[http://www.anybrowser.org/campaign/|Best Viewed With Any Browser]] [[http://www.math.binghamton.edu/dept/directions.html|Directions to the department.]] Organizers: [[laura/|Laura Anderson]], [[delucchi/|Emanuele Delucchi]], and [[zaslav/|Thomas Zaslavsky]]. ---- ===== SPRING 2009 ===== The usual day, time, and place are: **Tuesdays, 1:15 - 2:15**, in Room **LN-2205**, with coffee, tea, and cookies at 3:45 in the Anderson Room, LN-2207. Some meetings will be at other times, e.g., when joint with other seminars. ---- * **Tuesday, January 26**\\ //Organizational Meeting//\\ //Time//: 1:15 - 1:45\\ //Room//: LN-2205 * **Friday, January 30 (Note special day)**\\ //Speaker//: Lucas Rusnak (Binghamton)\\ //Title//: [[abstract.200901rus|Multi-Directed Hypergraph Representations of {0, +1, −1}-Matrices]]\\ //Time//: 4:45 - 5:45 **(Note special time)**\\ //Room//: LN-2206 **(Note special room)** * **Tuesday, February 3**\\ //Speaker//: Lucas Sabalka (Binghamton)\\ //Title//: [[abstract.200902sab|Projection-Forcing Multisets of Weight Changes]]\\ //Time//: 1:15 - 2:15\\ //Room//: LN-2205 * **Tuesday, February 10**\\ //Speaker//: Garry Bowlin (Binghamton)\\ //Title//: [[abstract.200902bow|Maximum Frustration in Signed Complete Bipartite Graphs]]\\ //Time//: 1:15 - 2:15\\ //Room//: LN-2205 * **Tuesday, February 17**\\ //No seminar.// * **Tuesday, February 24**\\ //Speaker//: Laura Anderson (Binghamton)\\ //Title//: [[abstract.200903and|Face Enumeration in Simplicial Complexes]]\\ //Time//: 1:15 - 2:15\\ //Room//: LN-2205 * **Tuesday, March 3**\\ //Speaker//: Laura Anderson (Binghamton)\\ //Title//: [[abstract.200903and|f-Vectors of Barycentric Subdivisions]]\\ //Time//: 1:15 - 2:15\\ //Room//: LN-2205 * **Tuesday, March 10**\\ //Speaker//: Thomas Zaslavsky (Binghamton)\\ //Title//: [[abstract.200903zas|Eight Queens and More]]\\ //Time//: 1:15 - 2:15\\ //Room//: LN-2205 * **Tuesday, March 17**\\ //Speaker//: Andy Fromader (Cornell)\\ //Title//: [[abstract.200903fro|The Charney-Davis Conjecture for Certain Spheres]]\\ //Time//: 1:15 - 2:15\\ //Room//: LN-2205 * **Tuesday, March 24**\\ //No seminar.// * **Tuesday, March 31**\\ //Speaker//: Emanuele Delucchi (Binghamton)\\ //Title//: [[abstract.200903del|The 15 Puzzle on an Arbitrary Graph]]\\ //Time//: 1:15 - 2:15\\ //Room//: LN-2205 * **Tuesday, April 7**\\ //No seminar.// * **Tuesday, April 14**\\ //Speaker//: Luise-Charlotte Kappe (Binghamton)\\ //Title//: [[abstract.200904kap|On the Covering Number of Symmetric and Alternating Groups: An Exercise in Combinatorial Optimization]]\\ //Time//: 1:15 - 2:15\\ //Room//: LN-2205 * **Tuesday, April 21**\\ //No seminar.// * **Tuesday, April 28**\\ //Speaker//: Louis Billera (Cornell)\\ //Title//: [[abstract.200904bil|The Enumerative Combinatorial Geometry of Coxeter Groups]]\\ //Time//: 1:15 - 2:15\\ //Room//: LN-2205 * **Tuesday, May 5**\\ //Speaker//: Christino Tamon (Clarkson)\\ //Title//: [[abstract.200905tam|Mixing of Quantum Walks on Graphs]]\\ //Time//: 1:15 - 2:15\\ //Room//: LN-2205 * **Thursday, May 7**\\ //Speaker//: Jackie Kaminski\\ //Title//: [[abstract.200905kam|Flows on Graphs, and Related Topics: I]]\\ //Time//: 11:40 - 12:40\\ //Room//: LN-2201 * **Friday, May 8**\\ //Speaker//: Jackie Kaminski\\ //Title//: [[abstract.200905kam|Flows on Graphs, and Related Topics: II]]\\ //Time//: 10:50-11:50\\ //Room//: LN-2201 * **Tuesday, May 12** ([[../colloquia/|Colloquium talk]])\\ //Speaker//: Chris Godsil (Waterloo)\\ //Title//: [[abstract.200905godc|Quantum Physics and Algebraic Graph Theory]]\\ //Time//: 1:20 - 2:20\\ //Room//: LN-2205 * **Tuesday, May 12**\\ //Speaker//: Chris Godsil (Waterloo)\\ //Title//: [[abstract.200905gods|Erdös-Ko-Rado Theorems]]\\ //Time//: 4:30 - 5:30\\ //Room//: LN-2206 ---- ---- ===== SUMMER 2009 ===== ---- ---- Past Semesters: [[f08|Fall 2008]] | [[s08|Spring 2008]] | [[f07|Fall 2007]] | [[s07|Spring 2007]] | [[f06|Fall 2006]] | [[s06|Spring 2006]] | [[f05|Fall 2005]] | [[s05|Spring 2005]] | [[f04|Fall 2004]] | [[s04|Spring 2004]] | [[f03|Fall 2003]] | [[s03|Spring 2003]] | [[f02|Fall 2002]] | [[s02|Spring 2002]] | [[f01|Fall 2001]] | [[s01|Spring 2001]] | [[f00|Fall 2000]] | [[s00|Spring 2000]] | [[f99|Fall 1999]] | [[s99|Spring 1999]] | [[f98|Fall 1998]] ---- [[http://www.math.binghamton.edu/|Departmental home page]]. ----