**Problem of the Week**

**BUGCAT**

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**Hilton Memorial Lecture**

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**Math Club**

**Actuarial Association**

seminars:comb:s03

Organizers: Laura Anderson, Matthias Beck, and Thomas Zaslavsky.

**Monday, January 27**

*Speaker*: Thomas Zaslavsky (Binghamton)

*Title*: Semiunique Representation of Some Biased-Graphic Matroids

*Time*: 3:30 - 4:30

*Room*: LN-2201

**Monday, February 3**

*Speaker*: Marcin Mazur (Binghamton)

*Title*: Davenport's Constant of a Finite Abelian Group

*Time*: 4:40 - 5:40

*Room*: LN-2205

**Monday, February 10**

*Speaker*: Ed Swartz (Cornell)

*Title*: Representations of Matroids

*Time*: 1:10 - 2:10 **(Note the time!)**

*Room*: LN-2205

**Monday, February 17**

NO MEETING

**Monday, February 24**

*Speaker*: Matthias Beck (Binghamton)

*Title*: Brion's Theorem and its Applications

*Time*: 1:10 - 2:10

*Room*: LN-2205

**Monday, March 3**

*Speaker*: Steven Dougherty (Univ. of Scranton)

*Title*: Building Complex and Quaternionic Lattices from Codes over Rings

*Time*: 4:40 - 5:40

*Room*: LN-2205

**Monday, March 17**

*Speaker*: Matthias Beck (Binghamton)

*Title*: Brion's Theorem and its Applications, Part II

*Time*: 1:10 - 2:10

*Room*: LN-2205

**Monday, March 24**

*Speaker*: Rigoberto Florez (Binghamton)

*Title*: The Relationship Between Full Algebraic Matroids and Lattice Properties, Part I: Pseudomodularity and Double Circuits

*Time*: 4:40 - 5:40 **(Note time change.)**

*Room*: LN-2205

This is the first part of Mr. Florez's doctoral candidacy exam. The examining committee consists of Matthias Beck, Fernando Guzmán, and Thomas Zaslavsky (chair). Everyone is invited to attend.

**Tuesday, March 25 (joint with the Algebra Seminar)**

*Speaker*: Rigoberto Florez (Binghamton)

*Title*: The Relationship Between Full Algebraic Matroids and Lattice Properties, Part II: Pseudomodularity and Full Algebraic Matroids

*Time*: 2:50 - 3:50

*Room*: LN-2205

This is the second part of Mr. Florez's doctoral candidacy exam. The examining committee consists of Matthias Beck, Fernando Guzmán, and Thomas Zaslavsky (chair). Everyone is invited to attend.

**Friday, March 28 (Note special day.)**

*Speaker*: Caroline Klivans (MIT)

*Title*: Shifted Complexes

*Time*: 1:10 - 2:10

*Room*: LN-2205

**Monday, March 31**

*Speaker*: Isabel Cristina Ruiz (Binghamton)

*Title*: There is No Tame Triangulation of the Infinite Real Grassmannian

*Time*: 1:10 - 2:10

*Room*: LN-2205

**Monday, April 7**

*Speaker*: Thomas Zaslavsky (Binghamton)

*Title*: Polygon Space

*Time*: 1:10 - 2:10

*Room*: LN-2205

**Monday, April 14**

*Speaker*: Samuel Hsiao (Cornell)

*Title*: Eulerian Enumeration and Other Illustrations of the Peak Phenomenon

*Time*: 4:40 - 5:40

*Room*: LN-2205

**Wednesday, April 23 (Note special day.)**

*Speaker*: Ira Gessel (Brandeis University)

*Title*: Rational Functions with Nonnegative Power Series Coefficients

*Time*: 4:40 - 5:40

*Room*: LN-2205

**Thursday, April 24: Colloquium**

*Speaker*: Ira Gessel (Brandeis University)

*Title*: The WZ Method for Combinatorial Identities

*Time*: 4:30 - 5:30

*Room*: LN-2205

**Monday, April 28**

*Speaker*: Lori Koban (Binghamton)

*Title*: Using Gains to Lift Matroids

*Time*: 1:10 - 2:10

*Room*: LN-2205

**Monday, May 5 (joint with the Geometry and Topology Seminar)**

*Speaker*: Isabel Cristina Ruiz (Binghamton)

*Title*: Combinatorializing Vector Bundles

*Time*: 1:10 - 2:10

*Room*: LN-2205

This is the first part of Ms. Ruiz's doctoral candidacy exam. The examining committee consists of Laura Anderson (chair), Thomas Farrell, and Thomas Zaslavsky. Everyone is invited to attend.

**Tuesday, May 6 (joint with the Geometry and Topology Seminar) (Note special day.)**

*Speaker*: Isabel Cristina Ruiz (Binghamton)

*Title*: Topologizing Combinatorial Bundles

*Time*: 1:15 - 2:30

*Room*: LN-2205

This is the second part of Ms. Ruiz's doctoral candidacy exam. The examining committee consists of Laura Anderson (chair), Thomas Farrell, and Thomas Zaslavsky. Everyone is invited to attend.

**Tuesday, May 6 (Note special day.)**

*Speaker*: Debra Waugh (Alfred University)

*Title*: The Order Dimension of Bruhat Order

*Time*: 4:30 - 5:30

*Room*: LN-2206

**Thursday, May 8 (joint with the Geometry and Topology Seminar)**

*Speaker*: Laura Anderson (Binghamton)

*Title*: Linked Spheres in Oriented Matroids

*Time*: 2:50 - 3:50

*Room*: LN-2205

**Monday, May 12**

*Speaker*: Chris Bumgartner (Binghamton)

*Title*: The Extended Coin-exchange Problem of Frobenius for Arithmetic Sequences

*Time*: 4:40 - 5:40

*Room*: LN-2206 **(Note special room.)**

Past Semesters: Fall 2002 | Spring 2002 | Fall 2001 | Spring 2001 | Fall 2000 | Spring 2000 | Fall 1999 | Spring 1999 | Fall 1998

seminars/comb/s03.txt · Last modified: 2020/01/29 14:03 (external edit)

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