====== The Combinatorics Seminar ====== ===== SPRING and SUMMER 2011 ===== [[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]], [[swartz/|Eric Swartz]], and [[zaslav/|Thomas Zaslavsky]]. ---- ===== SPRING 2011 ===== * **Tuesday, January 25**\\ Organizational meeting\\ //Time//: 1:15 - 2:15\\ //Room//: LN-2205 * **Tuesday, February 1 (joint with the [[../AlgebraSem/index.html|Algebra Seminar]])**\\ //Speaker//: Thomas Zaslavsky (Binghamton)\\ //Title//: [[abstract.201102zas|Switching Automorphism Groups of Signed Petersen Graphs]]\\ //Time//: 1:15 - 2:15\\ //Room//: LN-2205 * **Tuesday, February 8 (joint with the [[../topsem/index.html|Geometry and Topology Seminar]])**\\ //Speaker//: Laura Anderson (Binghamton)\\ //Title//: [[abstract.201102and|The Extension Space Conjecture for Oriented Matroids]]\\ //Time//: 1:15 - 2:15\\ //Room//: LN-2205 * **Tuesday, February 15 (joint with the [[../AlgebraSem/index.html|Algebra Seminar]])**\\ //Speaker//: Eric Swartz (Binghamton)\\ //Title//: [[abstract.201102swa|Locally 2-Arc Transitive Graphs]]\\ //Time//: 1:15 - 2:15\\ //Room//: LN-2205 * **Tuesday, February 22**\\ //Combinatorics holiday (no seminar)// * **Tuesday, March 1 (joint with the [[../topsem/index.html|Geometry/Topology Seminar]])**\\ //Speaker//: Samuel Kolins (Cornell)\\ //Title//: [[abstract.201103kol|Simplicial Cell Decompositions of Balls]]\\ //Time//: 1:15 - 2:15\\ //Room//: LN-2205 * **Tuesday, March 8**\\ //Speaker//: Frank Lutz (Technische Universität Berlin)\\ //Title//: [[abstract.201103lut|Nice and Bad Triangulations of Manifolds]]\\ //Time//: 1:15 - 2:15\\ //Room//: LN-2205 * **Tuesday, March 15**\\ //Combinatorics holiday until after the break// * **Tuesday, March 29**\\ //Combinatorics holiday continues// * **Tuesday, April 5**\\ //Combinatorics holiday continues// * **Special event: [[http://www.math.psu.edu/fu/gscc2011.htm|7th Graduate Student Combinatorics Conference]]**\\ April 9-10, 2011\\ Pennsylvania State University\\ Abstract Submission and Early Registration Deadline: March 13, 2011 * **Tuesday, April 12**\\ //Speaker//: Matthew Stamps (University of California, Davis)\\ //Title//: [[abstract.201104sta|Topological Representations of Matroid Maps]]\\ //Time//: 1:15 - 2:15\\ //Room//: LN-2205 * **Tuesday, April 26**\\ //Speaker//: Simon Joyce (Binghamton)\\ //Title//: [[abstract.201104joy|Matching, Linear Programming, and Matching Polyhedra, Part I]]\\ //Time//: 1:15 - 2:15\\ //Room//: LN-2205 * **Thursday, April 28**\\ //Speaker//: Simon Joyce (Binghamton)\\ //Title//: [[abstract.201104joy|Matching, Linear Programming, and Matching Polyhedra, Part II]]\\ //Time//: 1:15 - 2:15\\ //Room//: LN-2201 * **Tuesday, May 3**\\ //Speaker//: Felipe Rincón (Berkeley)\\ //Title//: [[abstract.201105rin|Computing Tropical Linear Spaces and //A//-Discriminants]]\\ //Time//: 1:15 - 2:15\\ //Room//: LN-2205 * **Thursday, May 5**\\ //Speaker//: Amanda Ruiz (Binghamton)\\ //Title//: [[abstract.201105rui|Realizations of Complex Matroids]]\\ //Time//: 1:15 - 2:15\\ //Room//: LN-2201 * Saturday, May 7, 2011\\ **[[gtd61-flyer.pdf|GRAPH THEORY DAY 61]]**\\ Nassau Community College, SUNY\\ 10:30 a.m. - 4:30 p.m. * **Tuesday, May 10**\\ //Speaker//: Michael Gillen (Binghamton)\\ //Title//: [[abstract.201105gil|Colorings and Orientations of Graphs]]\\ //Time//: 1:15 - 2:15\\ //Room//: LN-2205 * **Thursday, May 12**\\ //Speaker//: Christopher R. H. Hanusa (Queens College, CUNY)\\ //Title//: [[abstract.201105han|Combinatorial Interpretations in Affine Coxeter Groups]]\\ //Time//: 1:15 - 2:15\\ //Room//: S2-145 (Note special room) ---- ===== SUMMER 2011 ===== * **Monday, May 23 (Special day)**\\ //Speaker//: Rigoberto Flórez (South Carolina at Sumter)\\ //Title//: [[abstract.201105flo|Projective Representation of Non-Representable Matroids (of Biased Graphs)]]\\ //Time//: 1:30 - 2:30\\ //Room//: LN-2205 * **Monday, June 27 (Special day)**\\ //Speaker//: Lucas Rusnak (Texas State)\\ //Title//: [[abstract.201106rus|Developments in Oriented Hypergraphs]]\\ //Time//: 1:30 - 2:30\\ //Room//: LN-2205 * **Thursday, July 7 (Note special day and time)**\\ //Speaker//: Amanda Ruiz (Binghamton)\\ //Title//: [[abstract.201107rui|Final Polynomials and Nonrealizability of Oriented Matroids]]\\ //Time//: 1:00 - 3:00\\ //Room//: LN-2205 * **Friday, July 8 (Note special day and time)**\\ //Speaker//: Amanda Ruiz (Binghamton)\\ //Title//: [[abstract.201107rui|An Explicit Construction of Final Polynomials for Non-Euclidean Oriented Matroids]]\\ //Time//: 1:00 - 3:00\\ //Room//: LN-2205 * **Friday-Saturday, July 15-16**\\ **[[http://academics.smcvt.edu/gpangborn/dmd2011/dmdHome.html|DISCRETE MATHEMATICS DAY at St. Michael's College, near Burlington, Vermont]]**\\ with talks by Eric Swartz and Thomas Zaslavsky and poster presentations by some of our graduate students. ---- ---- Past Semesters: [[f10|Fall 2010]] | [[s10|Spring 2010]] | [[f09|Fall 2009]] | [[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]] ---- [[http://www.math.binghamton.edu/|Departmental home page]]. ----