Brown University 2015

The Fall 2015
workshop took place at Brown University, October 2-4, 2015. 
Support is provided by NSF and Brown University.

The conference is administered by Lori Nascimento (Brown University)

Funding provided by the National Science Foundation and Brown University.

View the 2015 Brown University AGNES Lectures here!

Click here for our 2015 poster!

Feedback form: click here.

Registration deadline was September 8, 2015.  See this page for information.

  • Qile Chen (Boston College): A1 curves on quasi-projective varieties
  • Jordan Ellenberg (Wisconsin): Furstenberg sets and Furstenberg schemes
  • Dave Jensen (Kentucky): Tropical Independence and the Maximal Rank Conjecture for Quadrics
  • Kiran Kedlaya (UCSD): Some applications of group theory to the arithmetic of abelian varieties
  • Kristin Lauter (Microsoft Research): Cryptographic Problems in Algebraic Geometry, or: Algebraic Geometry Problems in Cryptography
  • Brian Lehmann (Boston College): Positivity for curves
  • Jun Li (Stanford): Mixed-Spin-P fields and Wall crossing of GW theory of CY quintics.
  • Yiwei She (Columbia): The (unpolarized) Shafarevich conjecture for K3 surfaces

Abstracts: follow this link

Participant list available here.

Poster session: The poster session, organized by Su-Jeong Kang (Providence College) and Bin Wang (Rhode Island College), took place on Saturday afternoon. You can view the abstracts here.  The poster session information page is here.

A graduate warm-up minicourse organized by Jason Starr and Melody Chan was held on Friday October 2. The speakers are Anand Patel (BC), Yu-Jong Tzeng (Minnesota) and Dan Abramovich (Brown).


 11:00-12:00 Warm-up: Anand Patel (in CIT 165): The maximal rank conjecture
 1:30-2:30 Warm-up: Yu-Jong Tzeng (in Barus & Holley 168): Introduction to Gromov-Witten theory
 2:30-3:30 Warm-up: Dan Abramovich (in Barus & Holley 168): Introduction to logarithmic curves on logarithmic schemes
 4:00-4:30     registration
 4:30-5:30     Kristin Lauter: Cryptographic Problems in Algebraic Geometry
 5:30-6:30     reception (sponsored by ICERM)
 6:30-7:30 Jordan Ellenberg: Lotteries and Geometries (ICERM sponsored lecture).
 Note: this public lecture requires separate pre-registration, available through this link.
 8:30-9:00         registration
 9:00-9:30        pre-talk (grad students only) 
 9:30-10:30    Kiran Kedlaya: Some applications of group theory to the arithmetic of abelian varieties

 10:30-11:00 coffee break
 11:00-12:00 Jordan Ellenberg: Furstenberg sets and Furstenberg schemes
 12:00-2:00 lunch break
 2:00-2:30 pre-talk (grad students only)
 2:30-3:30     Jun Li: Mixed-Spin-P fields and Wall crossing of GW theory of CY quintics.
 3:30-4:00 coffee break
 4:00-5:00 Qile Chen: A1 curves on quasi-projective varieties
 5:00-6:30 poster session and reception
 evening "Waterfire" in downtown Providence
 8:30-9:00   registration
 9:00-10:00    Yiwei She: The (unpolarized) Shafarevich conjecture for K3 surfaces
 10:00-10:30 coffee break
 10:30-11:30    Brian Lehmann: Positivity for curves
 11:30-12:00 break
 12:00-1:00 Dave Jensen: Tropical independence and the maximal rank conjecture for quadrics

Lectures held at  MacMillan 115, 117

Hotel Information:  Rooms have been blocked for AGNES at the Marriott Providence Downtown, the Wyndham Garden and the Hampton Inn (more info about the hotels is listed below).  If you registered by the deadline we should have contacted you with your hotel information and instructions. If you need to cancel or change or have not been contacted please contact Lori Nascimento immediately. Upon check-in at the hotel, please let them know that you are with the AGNES group. Please retain receipts for reimbursement.

Marriott Providence Downtown ($150/night)
1 Orms Street
Providence, RI 02904
Phone: 401-272-1191

220 India Street
Providence, RI 02903

Hampton Inn ($139/night)
56 Weybossett Street
Providence, RI 02903


Since the conference is on the weekend, there should be plenty of on-street parking.  While most on-street parking is 2-3 hour parking, there are some streets with all day parking.  


There is also visitor parking in Lot 68, also called the Power Street Parking Garage. Entrance to the garage is located at the intersection of Power and Thayer streets.  The lot contains two Pay and Display parking pay stations. One is located at the Power Street entrance and the second is in the far corner of the lot by Brook Street. The Pay Stations accept credit cards (Visa, MasterCard, American Express, and Discover) and U.S. bills.  The cost is $2.00/hour.

Concurrent events:
  1. On Monday September 28 through Friday October 2 there will be an ICERM workshop on "Modular Forms and Curves of Low Genus: Computational Aspects"
  2. On Friday October 2 at 6:30 Jordan Ellenberg will deliver a public lecture, sponsored by ICERM, at the same lecture hall as AGNES. For details follow this link. 
  3. On Saturday, October 3 beginning around 6:30 into the night the city of Providence holds Waterfire. In particular this means that last-minute lodging arrangements may be difficult and expensive.

Kennedy Plaza is located just downtown. Click here for a map showing the conference site and hotels.  
Most inter-city bus lines stop here (Peter PanMegabus) as well as the airport bus.
RIPTA City Buses: click here for a list of buses that travel from the station and up to the east side of Providence (where the conference will be held) and back. Click here for bus fare information. 

Providence Train Station - Click here to view the MBTA schedule, and here for Amtrak.

Air travel: the T. F. Green airport serves many major locations. Alternatively, one can arrive at Boston's Logan airport and take bus or train

Reimbursement requests - Please fill out this Travel Expense form.  Attach all receipts and send them to Lori Nascimento.

About AGNES: AGNES is a series of weekend workshops in algebraic geometry. One of our goals is to introduce graduate students to a broad spectrum of current research in algebraic geometry. AGNES is held twice a year at participating universities in the Northeast.

Scientific committee: Dan Abramovich (Brown), Joe Harris (Harvard), Aise Johan de Jong (Columbia), Mikhail Kapranov (Yale), János Kollár (Princeton), Robert Lazarsfeld (Stony Brook University), James McKernan (UCSD).

Organizing committee: Dan Abramovich (Brown), Alexander Braverman (Brown), Dawei Chen (Boston College), Ron Donagi (UPenn), Maksym Fedorchuk (Boston College), Antonella Grassi (UPenn), Sam Grushevsky (Stony Brook), Paul Hacking (UMass Amherst),  Mikhail Kapranov (Yale), Radu Laza (Stony Brook), Stephen Lichtenbaum (Brown), Alina Marian (Northeastern), Tony Pantev (UPenn), Sam Payne (Yale), Jason Starr (Stony Brook), Jenia Tevelev (UMass Amherst)