Illinois Number Theory Fest

May 16-20, 2007

Department of Mathematics

Conference Photos (New) (taken by Kevin Ford)

University of Illinois at Urbana-Champaign

This meeting will celebrate the 80th birthday of Heini Halberstam, who has been a member of the U. of Illinois Dept. of Mathematics since 1980 and who served as Head for 7 1/2 years. We also will celebrate, with a series of lectures, the 80th birthday of John Selfridge, who has contributed much both mathematically and financially to number theory.

Plenary Speakers

  • George Andrews (Penn. St.)
  • A.O.L. Atkin (U. of Illinois at Chicago)
  • Dan Bernstein (U. of Illinois at Chicago)
  • Ben Brubaker (MIT)
  • Kathrin Bringmann (Wisconsin)
  • Alina Cojocaru (U. of Illinois at Chicago)
  • Brian Conrey (American Institute of Mathematics)
  • Jean-Marc Deshouillers (Bordeaux)
  • Peter Elliott (Colorado)
  • Michael Filaseta (South Carolina)
  • Kevin Ford (U. of Illinois at Urbana-Champaign)
  • John Friedlander (Toronto)
  • Dan Goldston (San Jose St.)
  • Andrew Granville (Montreal)
  • Karl Mahlburg (MIT)
  • Ram Murty (Queen's)
  • Ken Ono (Wisconsin)
  • Carl Pomerance (Dartmouth)
  • Peter Sarnak (Princeton) (tentative)
  • Kannan Soundararajan (Stanford)
  • Robert Vaughan (Penn. St.)
  • Hugh Williams (Calgary)
  • Ae Ja Yee (Penn. St.)
  • Alexandru Zaharescu (U. of Illinois at Urbana-Champaign)

The conference will begin at 9 AM on May 16, and conclude at 5 PM on May 20. Registration will open at 8 AM on May 16. In addition to the plenary talks of 40 minutes each, there will be talks of 20 minutes each by other conference participants. Schedule of talks.
The lecture rooms have chalk boards, dual overhead projectors, and a computer projection system which can be connected to a laptop.


Bruce Berndt
Harold Diamond
Michael Filaseta
Kevin Ford


The airport for Champaign and Urbana is Willard Airport (airport code CMI) and is served by American Airlines and Northwest Airlines. The Champaign-Urbana Mass Transit District has regular AirBus service from the airport to the Illini Union. The Illini Limo (217-384-5892) meets most flights at Willard, and transports to all local hotels. They have a small stand next to the baggage claim; check in with them after landing. The fare is $13 one way to any location on campus.

It is also possible to fly to Chicago's O'Hare Airport (ORD) or Midway Airport (MDW) and renting a car or taking other ground transportation to Urbana. Driving takes about 2.5 hours. The Lincolnland Express (LeX) takes about three hours (one way) and costs approximately $50. Upon arrival in Champaign-Urbana, the shuttle stops at the Illinois Bus/Train Terminal and at the Illini Union. (Warning! The LEx shuttle can be extremely unreliable.)
Another alternative is to take Chicago transit downtown to Union Station and take Amtrak to Champaign. (Warning! There are only two daily Amtrak trains between Chicago and Champaign.) Local buses regularly go from the Champaign train station to campus.

More convenient and possible cheaper than O'Hare is the Indianapolis airport (IND) or Central Illinois Regional in Bloomington and renting a car. The Indianapolis airport is a 2-hour drive along interstate I-74 from Urbana. Lincolnland Express also has shuttles; the price is about $100. Central Illinois Regional is about a 1-hour drive on I-74 from Urbana.


The conference will be held in the math department in Altgeld Hall.

A block of rooms has been reserved for conference participants at Hawthorn Suites . The special price for the conference participants is $80 per night plus tax for a single or a double room. Reservations must be made by April 15, 2007. There are several regular buses from near the Hawthorn Suites to/from campus which stop near Altgeld Hall.

A block of rooms has also been reserved for the conference participants at Hendrick House , a student dormitory located 5-10 minutes walking distance from Altgeld Hall. Rooms cost $25-$29 plus 11% tax per night.

Other accomodations:

Illini Union Guestrooms (most of the rooms are already booked by other events during the conference dates)

Hotel Listings for Champaign-Urbana (and other community information)

Campus and community maps


The best option during the week is to purchase permits to park in the Hendrick House lot, near the corner of Green and Gregory, due east of Altgeld and an 8-10 minute walk. Permits are $4 per day and can be purchased at the front desk at Hendrick House (note this is not a University lot). These are available to everyone, not just those staying at Hendrick House. On the weekend, there are University lots in which you can park for free, but make sure the lot states that there is unrestricted weekend parking. Avoid spaces which are reserved 7 days/weekk,24-hours/day (these will have posted signs). Some close available lots are D6 and D1 at the corner of Goodwin and Illinois (5 minute walk east), and A9 at the corner of 6th and Healey (3 minute walk northwest).

Registration and Support:

Regsistration for the conference is closed.


A banquet will be held on the evening of May 19 (Saturday), from 6:30 - 9:30 in the Levis Faculty Center on campus.

Schedule of talks

Schedule of talks.

Special activities


Temperatures in Urbana in May average 75-80 during the day and in the 50s at night, but it is not unusual for the temperatures to be 10-15 degrees hotter or colder. Rainfall averages about 4 inches for the month.

Weather forecast for Champaign-Urbana

Contact the organizers: