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Directions to the department.

Organizers: Laura Anderson, Eric Swartz, and Thomas Zaslavsky.

• Tuesday, September 4
  Organizational meeting
  Time: 1:15 - 1:45
  Room: LN-2205

• —– Special Announcement —–

  • Weekly Study Seminar on Matroid Theory
    Time: Wed., 3:30 - 4:30, beginning Wed., Sept. 5
    Room: LN-2206
    All are invited. This will be a very elementary introduction to the basics of matroids, based on James Oxley, Matroid Theory, second edition. Zaslavsky hopes to teach a course on matroid theory in the spring; this could be (optional) preparation for it.

• Tuesday, September 11
  Speaker: Alex Schaefer (Binghamton)
  Title: Realizing Directed Graphs by Dice
  Time: 1:15 - 2:15
  Room: LN-2205

• Saturday, September 15
  DISCRETE MATHEMATICS DAYS OF THE NORTHEAST
  At the Bread Loaf Campus of Middlebury College. Information.
  All interested persons are invited. Preregistration is requested so enough lunches will be available.

• Tuesday, September 18
  Holiday: No seminar.

• Tuesday, September 25
  Speaker: Matt Brin (Binghamton)
  Title: Groups and Map Colorings
  Time: 1:15 - 2:15
  Room: LN-2205

• Tuesday, October 2
  Speaker: Simon Joyce (Binghamton)
  Title: The Conjectures of R. Thomas on Gene Regulatory Networks
  Time: 1:15 - 2:15
  Room: LN-2205

• Tuesday, October 9
  No seminar today; the scheduled talk has been cancelled.

• Tuesday, October 16
  Speaker: Simon Lepkin (Binghamton)
  Title: Extended Gale-Shapley Algorithm for Stable Many-Many Matchings
  Time: 1:15 - 2:15
  Room: LN-2205

• Tuesday, October 23
  Speaker: Eric Swartz (Binghamton)
  Title: Locally 3-Arc-Transitive Covers of Complete Bipartite Graphs
  Time: 1:15 - 2:15
  Room: LN-2205

• Tuesday, October 30
  Speaker: Ed Swartz (Cornell)
  Title: Manifold Complexity and Face Enumeration
  Time: 1:15 - 2:15
  Room: LN-2205

• Saturday, November 3
  GRAPH THEORY DAY 64
  Stevens Institute of Technology, Hoboken, New Jersey

• Tuesday, November 6
  Speaker: Neil Spalter (Binghamton)
  Title: Orthogonal Latin Squares of Order 6
  Time: 1:15 - 2:15
  Room: LN-2205

• Tuesday, November 13
  Speaker: Alex Schaefer (Binghamton)
  Title: Introduction to Phylogenetic Combinatorics
  Time: 1:15 - 2:15
  Room: LN-2205

• Tuesday, November 20
  Speaker: Kaitlin Reissig (Binghamton)
  Title: Stanley's Theorem on Acyclic Orientations and Colorings of Graphs
  Time: 1:15 - 2:15
  Room: LN-2205

• Tuesday, November 27
  Speaker: Michael Fink (Binghamton)
  Title: Network Theory and Signal Processing
  Time: 1:15 - 2:15
  Room: LN-2205

• Tuesday, December 4
  Speaker: Jackie Kaminski (Binghamton)
  Title: Classification of Factored Gain-Graphic Arrangements
  Time: 1:15 - 2:15
  Room: LN-2205

• Tuesday, December 11
  Speaker: Amanda Ruiz (Binghamton)
  Title: Realization Spaces of Phased Matroids
  Time: 1:15 - 2:15
  Room: LN-2205

  Phased matroids are combinatorial objects, recently defined by Anderson and Delucchi, that play the same role for complex vector spaces as oriented matroids do for real vector spaces. A phased matroid is a matroid with additional structure that generalizes orientation.

  According to Mnëv's Universality Theorem, for those phased matroids which are complexified oriented matroids, the realization space can be arbitrarily complicated. In contrast, for most other phased matroids, the realization space is remarkably simple. I will focus on the rank-3 case to demonstrate some properties of, and proofs about, phased matroids.

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