Directions to the department.

Organizers: Laura Anderson, Michael Dobbins, Benjamin Schröter, and Thomas Zaslavsky.

• Tuesday, January 21
  Virtual Combinatorics Colloquium
  Speaker: Matjaz Konvalinka (Ljubljana)
  Title: The First Bijective Proof of the ASM Theorem
  Time: 2:00 - 3:00 (Note special time), preceded by a brief organizational meeting at 1:40
  Room: WH-100E

• Tuesday, January 28
  No meeting today; we're all too busy.

• Tuesday, February 4
  Speaker: Laura Anderson (Binghamton)
  Title: A Charming Conjecture Coming From Mathematical Psychology
  Time: 1:15 - 2:15
  Room: WH-100E

• Tuesday, February 11
  Speaker: Michael Dobbins (Binghamton)
  Title: The Real RAM Analogue to the Cook--Levin Theorem
  Time: 1:15 - 2:15
  Room: WH-100E

• Tuesday, February 18
  No meeting today; we're warming up for next week's exciting talk.

• Tuesday, February 25
  Speaker: Ed Swartz (Cornell)
  Title: Polymatroids are to Finite Groups as Matroids are to Finite Fields
  Time: 1:15 - 2:15
  Room: WH-100E

• Tuesday, March 3
  No meeting today.

• Tuesday, March 10
  Speaker: Chris Eppolito (Binghamton)
  Title: Extension Spaces of Strongly Euclidean Oriented Matroids
  Time: 1:15 - 2:15
  Room: WH-100E

• Tuesday, March 17
  Speaker: Casey Donoven (Binghamton)
  Title: Intersection Numbers and Minimal Subbases
  Time: 1:15 - 2:15
  Location: https://binghamton.zoom.us/j/951503518
  The seminar will exist exclusively online, via Zoom. Casey will open the Zoom meeting at 1:00 to give time to work out any technical difficulties.

• [Tuesday, March 24] POSTPONED: new date will be announced
  Speaker: Olakunle Abawonse (Binghamton)
  Title: Homeomorphism Types of the Combinatorial Grassmannian MacP(2,n) and the Combinatorial Flag Manifold MacP(1,2,n)
  Time: 1:15 - 2:15
  Location: TBA

• Tuesday, March 31
  No meeting today.

• Tuesday, April 7
  Virtual Combinatorics Colloquium
  Speaker: Maria Chudnovsky (Princeton)
  Title: Recent Progress on the Erdos--Hajnal Conjecture
  Time: 2:00 p.m.
  Location: https://smcvt.zoom.us/j/831984515

• Tuesday, April 14
  No meeting today $\because$ COVID-19.
  

• Tuesday, April 21
  Speaker: Amelia (Mattern) Cyr
  Title: Deficiency in Signed Graphs
  Time: 1:15 - 2:15, a break, and continuing for a while.
  Location: https://zoom.us/j/96771786644?pwd=Q0Y4S2IveTVOU2ljZzdtV2F2bDdTUT09.
  This is Ms. Cyr's doctoral dissertation defense. The examining committee consists of Laura Anderson, Michael Dobbins, Leslie Lander (outside examiner), and Thomas Zaslavsky (chair).

• Saturday–Sunday, April 25–26, 2020 (virtual online meeting)
  DISCRETE MATHEMATICS DAY at the University at Albany
  

• Tuesday, April 28
  Cancelled on account of COVID-19.

• Tuesday, May 5
  Cancelled on account of COVID-19.

• Tuesday, June 9
  Speaker: Nicholas Lacasse (Binghamton)
  Title: A Survey of the Shi Arrangement
  Time: 1:15 - 4:30 (with a break around 2:15)
  Location: https://binghamton.zoom.us/j/92388564905 (opening at 1:00)
  The Shi arrangement and its relatives like the Linial arrangement are arrangements of hyperplanes in Euclidean space that have gathered a lot of attention in recent years, not only from combinatorists. This talk, based on a paper of the same title by Susanna Fishel, will survey combinatorial aspects of the Shi arrangement.

  This is Mr. Lacasse's exam for admission to candidacy. The examining committee consists of Laura Anderson, Michael Dobbins, and Thomas Zaslavsky (chair). The talk is open to the public and all are welcome.

• Speaker: Daniel Slilaty (Wright State)
• Speaker: Christopher Hanusa (Queens College)
• Speaker: Bertrand Guenin (Waterloo)

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