====== The Combinatorics Seminar ======

===== FALL 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]].


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**Tuesday, September 1**\\
//Organizational Meeting//\\
//Time//: 1:15 - 2:00\\
//Room//: LN-2205

**Tuesday, September 8**\\
//Speaker//: Lucas Rusnak (Binghamton)\\
//Title//: [[abstract.200909rus|Oriented Incidence and a Generalization of Hypergraphs: An Introduction]]\\
//Time//: 1:15 - 2:15\\
//Room//: LN-2205

**Tuesday, September 15**\\
//Speaker//: Lucas Rusnak (Binghamton)\\
//Title//: [[abstract.200909rus|Oriented Incidence and a Generalization of Hypergraphs: Balance and Dependency]]\\
//Time//: 1:15 - 2:15\\
//Room//: LN-2205

**Tuesday, September 22**\\
//Speaker//: Thomas Zaslavsky (Binghamton)\\
//Title//: [[abstract.200909zas|Psycho-Graph Math on Two-Mode Signed Networks]]\\
//Time//: 1:15 - 2:15\\
//Room//: LN-2205

**Tuesday, September 29**\\
//Speaker//: Amanda Ruiz (Binghamton)\\
//Title//: [[abstract.200909rui|When Do Two Planted Graphs Have the Same Cotransversal Matroid?]]\\
//Time//: 1:15 - 2:15\\
//Room//: LN-2205

**Tuesday, October 6 (joint with the [[../topsem/index.html|Geometry and Topology Seminar]])**\\
//Speaker//: Priyavrat Deshpande (Western Ontario)\\
//Title//: [[abstract.200910pri|Arrangements of Submanifolds and the Tangent-Bundle Complement]]\\
//Time//: 1:15 - 2:15\\
//Room//: LN-2205

**Tuesday, October 13 (joint with the [[../topsem/index.html|Geometry and Topology Seminar]])**\\
//Speaker//: Max Wakefield (Annapolis)\\
//Title//: [[abstract.200910wak|Topological Formality of Arrangements of Subspaces Derived from Edge-Colored Hypergraphs]]\\
//Time//: 1:15 - 2:15\\
//Room//: LN-2205

**Tuesday, October 20**\\
//Speaker//: Tom Head (Binghamton)\\
//Title//: [[abstract.200910hea|Computing Transparently: The Independent Sets in a Graph]]\\
//Time//: 1:15 - 2:15\\
//Room//: LN-2205

**Tuesday, October 27**\\
//Speaker//: Emanuele Delucchi & Laura Anderson (Binghamton)\\
//Title//: [[abstract.200910and|Complex Matroids]]\\
//Time//: 1:15 - 2:15\\
//Room//: LN-2205

**Tuesday, November 3**\\
//Speaker//: Nate Reff (Binghamton)\\
//Title//: [[abstract.200911ref|Extensions of Spectral Graph Theory]]\\
//Time//: 1:15 - 2:15\\
//Room//: LN-2205

**Tuesday, November 10**\\
//Speaker//: Caroline Klivans (Chicago and Cornell)\\
//Title//: [[abstract.200911kli|A Geometric Interpretation of the Characteristic Polynomial of a Hyperplane Arrangement]]\\
//Time//: 1:15 - 2:15\\
//Room//: LN-2205

**Tuesday, November 17 (joint with the [[../AlgebraSem/index.html|Algebra]] and [[../NumberTheorySem/index.html|Number Theory]] Seminars)**\\
//Speaker//: Justin Lambright (Lehigh)\\
//Title//: [[abstract.200911lam|A Combinatorial Interpretation for Computations in the Quantum Polynomial Ring]]\\
//Time//: 1:15 - 2:15\\
//Room//: LN-2205

**Tuesday, November 24 (joint with the [[../AlgebraSem/index.html|Algebra]] and [[../NumberTheorySem/index.html|Number Theory]] Seminars)**\\
//Speaker//: Matthias Beck (San Francisco State University)\\
//Title//: [[abstract.200911bec|Symmetrically Constrained Compositions of an Integer]]\\
//Time//: 1:15 - 2:15\\
//Room//: LN-2205

**Tuesday, December 1**\\
//Speaker//: Lucas Sabalka (Binghamton)\\
//Title//: [[abstract.200912sab|Graph Braid Groups]] **[Cancelled]**\\
//Time//: 1:15 - 2:15\\
//Room//: LN-2205

**Tuesday, December 8**\\
//Speaker//: Simon Joyce (Binghamton)\\
//Title//: [[abstract.200912joy|The Sum of Squares of Degrees in a Graph]]\\
//Time//: 1:15 - 2:15\\
//Room//: LN-2205

**Friday, December 18 (Special time)**\\
//Speaker//: Lucas Rusnak (Binghamton)\\
//Title//: [[abstract.200907rus|Oriented Hypergraphs, Parts I & II]]\\
//Time//: 10:30 - 11:30 and 1:00-2:00\\
//Room//: LN-1120 (**Note special room**.)

These lectures are the Ph.D. thesis defense of Mr. Rusnak. His examining committee is Laura Anderson, Gerard Cornuejols (Carnegie-Mellon), Marcin Mazur, and Thomas Zaslavsky (chair).

Everyone is welcome to attend.


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Past Semesters: [[s09|Spring 2009]] | [[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]]


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[[http://www.math.binghamton.edu/|Departmental home page]].


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