Triangle Lectures in Combinatorics (TLC)

These are a series of combinatorial workshops, held once per semester, each on a Saturday. The series began with its first meeting in spring 2010. They rotate among the universities in and around the Research Triangle. Participants come from numerous colleges and universities within a few hours drive, and some from even farther away. These workshops are funded by the National Science Foundation and the National Security Agency, in particular enabling us to bring in four exciting speakers to give one hour talks each time as well as funding travel expenses for participants.

TLC steering committee: Patricia Hersh (NCSU), Ezra Miller (Duke), Gabor Pataki (UNC Chapel Hill), Nathan Reading(NCSU), Seth Sullivant (NCSU), and Cynthia Vinzant (NCSU).

Upcoming meeting: Saturday October 3, 2015, 9:15am -- 6pm.

Location: Duke University (Physics building, room 128).

Speakers: Yuliy Baryshnikov (UIUC), Susan Holmes (Stanford), Dana Randall (Georgia Tech), and John Shareshian (Washington University in St. Louis).

Preregistration: please send email to (Patricia Hersh) to preregister. This is very helpful in our planning how much coffee, etc. to have at coffee breaks and for our obtaining funding to support these meetings.

Participant Travel Expense Reimbursement: we have some funding available for some participants, especially for early-career participants. Most of this is restricted to U.S. citizens, and what is available to others still requires that the participants be employed at a U.S. university. To request funding please fill out the form here.

Poster Session: This meeting of a Triangle Lectures in Combinatorics will have a poster session. To request a slot in the poster session please fill out the following webform. There will be 10 poster slots in total and all reasonable posters will be accepted on a first-come first-served basis.

Friday Colloquium: in addition to the conference talks at Duke on Satuday, Oct. 3rd, there will also be a math colloquium talk by Persi Diaconis at 4pm on Friday, Oct. 2nd at North Carolina State University (in Raleigh NC, which is about 30 minutes drive from Duke).

Saturday Triangle Lectures in Combinatorics Schedule:

9:15-10am, coffee and light breakfast
10-11am, John Shareshian (Washington U in St. Louis), ``Chromatic quasisymmetric functions and regular semisimple Hessenberg varieties'' (joint work with Michelle Wachs)
11-11:30am, coffee break
11:30am-12:30pm, Dana Randall (Georgia Tech), ``Phase transitions in random tilings''
12:30-2:30pm, lunch break
2:30-3:30pm, Yuliy Baryshnikov (UIUC), ``You only live twice: the topology of dodging a bullet''
3:30-4pm, coffee break
4-5pm, Susan Holmes (Stanford), ``Looking at the data, all the data, incorporating heterogeneous information into a human microbiome study''
5-6pm, Poster Session
6:30pm, somewhat informal conference dinner at local restaurant.

Directions: The Mathematics Department is located in the Physics Building, which is at the end of Science Drive, almost opposite the the Bryan Center, on the West Campus of Duke University. If you approach from the front of the building, the department is on the left hand side. The main departmental offices are in room 117 on the first floor, the same level as the main entrance of the building. Parking is immediately to the right of the building from the following perspective picture of the physics building (map).

In the above map locate the point Towerview Rd and Science Dr. To locate the parking lot on the map drive along Sciences Dr. towards the traffic circle. At the traffic circle go 3/4 around the circle and parking will be on your right. This is immediately next to the Physics Building. This streetview shows you are entering the traffic circle and to your left you can see the gate the the parking lot for the Math department.

Parking: We have purchased 45 parking passes for the lot immediately next door to the physics building, just to the right of it on Science Drive. But you will need to get one of these passes and to swipe it to enter the lot. Our plan is to leave parking passes in a water-proof box next to the gate. Please only take one pass!

A good back-up option is parking at the Sarah Duke Gardens for a fee. Parking at Sarah Duke Gardens will require a walk across campus to the physics building, so participants are advised (1) to allow time for this walk, (2) to print a campus map in advance since the route to the physics building may be confusing, and (3) to bring an umbrella since it may be very rainy. Participants who arrive late for the conference will likely need to park at the Sarah Duke Gardens.

Hotel suggestions:

Hilton Durham, 919-383-8033, 3800 Hillsborough Rd, Durham, NC
Millenium Hotel, 919-383-8495, 2800 Campus Walk Ave, Durham, NC
Brookwood Inn, 877-616-2306, 2306 Elba St, Durham, NC

Preregistered Participants (so far):

Justin Allman (Duke)
Alessandro Arlotto (Duke)
Emily Barnard (NCSU)
Yuliy Baryshnikov (UIUC)
Greg Bell (UNC Greensboro)
Omer Bobrowski (Duke)
Yue Cai (U Kentucky)
Shih-Wei Chao (U Northern Georgia)
Persi Diaconis (Stanford)
Patricio Gallardo (U. Georgia)
He Guo (Georgia Tech)
John Harer (Duke)
Qijun He (Clemson)
Patricia Hersh (NCSU)
Gabor Hetyei (UNC Charlotte)
Susan Holmes (Stanford)
Chetak Hossain (NCSU)
Wesley Hough (U Kentucky)
Austin Lawson (UNC Greensboro)
Ricky Liu (NCSU)
Mauro Maggioni (Duke)
Joshua Martin (UNC Greensboro)
Thomas McConville (MIT)
Emily Meehan (NCSU)
Carl Meyer (NCSU)
Ezra Miller (Duke)
Kailash Misra (NCSU)
Anthea Monod (Duke)
Sayan Mukherjee (Duke)
Patrik Noren (NCSU)
McCabe Olsen (U Kentucky)
Debmalya Panigrahi (Duke)
Gabor Pataki (UNC Chapel Hill)
Darleen Perez-Lavin (U Kentucky)
Rachel Petrik (U Kentucky)
Shira Polster (NCSU)
Robert Proctor (UNC Chapel Hill)
Dana Randall (Georgia Tech)
Nathan Reading (NCSU)
James Rudzinski (UNCG)
Sandi Rudzinski (UNCG)
Radmila Sazdanovik (NCSU)
Scott Scruggs (Clemson)
John Shareshian (Washington University in St. Louis)
Cliff Smyth (UNC Greensboro)
Grace Stadnyk (NCSU)
Caprice Stanley (NCSU)
Kara Stasikelis (Clemson)
Ashleigh Thomas (Duke)
Tzvetalin Vassilev (Nippising University)
Cynthia Vinzant (NCSU)

Organizing committee:Sayan Mukherjee, chair (Duke), John Harer (Duke), Patricia Hersh (NCSU), and Mauro Maggioni (Duke).

Past meetings:

Eleventh meeting: February 21, 2015 at NCSU
Speakers: Matthew Baker (Georgia Tech), Henry Cohn (Microsoft New England), Lionel Levine (Cornell), and Anne Schilling (UC Davis).
Organizing Committee: Ricky Liu (NCSU), Seth Sullivant (NCSU), and Cynthia Vinzant (NCSU)
More information

Tenth meeting: October 4, 2014, at High Point University
Speakers: Richard Ehrenborg (Kentucky), Robert Ghrist (Penn), Luis Serrano (U Quebec a Montreal), and Rekha Thomas (U. Washington).
Organizing Committee: Lindsay Piechnik (chair, High Point), Ed Allen (Wake Forest), Sarah Mason (Wake Forest), Seth Sullivant (NCSU), and Laurie Zack (High Point)
More information

Ninth meeting: February 22, 2014 at UNC-Chapel Hill.
Speakers: Shankar Bhamidi (UNC-Chapel Hill), Anders Buch (Rutgers), Pablo Parrilo (MIT), Eva Tardos (Cornell)
Organizing committee: Gabor Pataki (UNC-Chapel Hill), Lindsay Piechnik (High Point University), Scott Provan (UNC-Chapel Hill), Richard Rimanyi (UNC-Chapel Hill), Jack Snoeyink (UNC-Chapel Hill)
More information

Eighth meeting: September 21, 2013 at NCSU.
Speakers: George Andrews (Penn State), Matt Beck (San Francisco State University), Robin Pemantle (University of Pennsylvania), and Victoria Powers (Emory University)
Organizing committee: Michael Singer (NCSU), Carla Savage (NCSU), and Seth Sullivant (NCSU)
More information

Seventh meeting: February 9, 2013 at Wake Forest University.
Speakers: Louis Billera (Cornell), Rod Canfield (University of Georgia), Matthew Kahle (Ohio State University), Michelle Wachs (University of Miami)
Organizing committee: Sarah Mason (chair, Wake Forest University), Ed Allen (Wake Forest University), Alex Fink (NCSU), Patricia Hersh (NCSU)
More information

Sixth meeting: September 22, 2012 at NCSU.
Speakers: Allen Knutson (Cornell), Vin de Silva (Pomona College), Richard Stanley (MIT), Lauren Williams (UC Berkeley).
Organizing committee: Alex Fink (NCSU), Patricia Hersh (NCSU), Carla Savage (NCSU).
More information

Fifth meeting: February 11, 2012 at Duke University.
Speakers: Alex Fink (NCSU), Sergey Fomin (Michigan), Nets Katz (Indiana University), Isabella Novik (University of Washington).
Organizing Committee: Christine Berkesch (Duke), Sonja Mapes (Duke), Ezra Miller (Duke).
More information

Fourth meeting: November 5, 2011 at UNC Chapel Hill.
Speakers: Thomas Lam (Michigan), Jesus De Loera (UC Davis), Ezra Miller (Duke), Doron Zeilberger (Rutgers)
Organizing committee: Prakash Belkale (UNC Chapel Hill), Gabor Pataki (UNC Chapel Hill), Robert Proctor (UNC Chapel Hill), Scott Provan (UNC Chapel Hill), Richard Rimanyi (UNC Chapel Hill).
More information

Third meeting: April 9, 2011 at NCSU.
Speakers: Prakash Belkale (UNC Chapel Hill), Vic Reiner (University of Minnesota), John Stembridge (University of Michigan), Stephanie van Willigenburg (UBC).
Organizing committee: Hoda Bidkhori (NCSU), Alex Fink (NCSU), Patricia Hersh (NCSU), Carla Savage (NCSU).
More information

Second meeting: September 25, 2010 at Duke.
Speakers: Alexander Barvinok (University of Michigan), Anne Shiu (Duke), Sami Assaf (MIT), Persi Diaconis (Stanford).
Organizing committee: Patricia Hersh (NCSU), Sonja Mapes (Duke), Ezra Miller (Duke).
More information

First meeting: February 6, 2010 at NCSU.
Speakers: Carla Savage (NCSU), Bernd Sturmfels (UC Berkeley), Ed Swartz (Cornell), Laszlo Szekely (University of South Carolina).
Organizing committee: Patricia Hersh (NCSU), Ezra Miller (Duke), Scott Provan (UNC) Nathan Reading (NCSU).
More information