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Thirteenth Algorithmic Number Theory Symposium ANTS-XIII
University of Wisconsin, Madison
July 16 – 20, 2018

Thirteenth Algorithmic Number Theory Symposium (ANTS-XIII)
July 16 – 20, 2018

Local Information

The workshop takes place at the University of Wisconsin, Madison. Suggested food options are in the Restaurant guide. See Travel and transport for information about getting around in Madison. Here is a Visitor's Guide to Madison.

Child Care

There is a lactation room available in Grainger Hall. Please contact the local organizers if you would like more information. Grainger Hall has provided us with information about child care options, which we are reproducing here. This is just a list of resources, not a recommendation.


On Campus Housing

Some dorm-style accomodations will be available through University Housing, in Sellery Hall, 821 W. Johnson St. This is on campus, about a block from the conference site (see the green icon on the map below). The rates, which include breakfast, are: $37.23/night double occupancy and $59.23/night single occupancy.

Attendees receiving funding from the conference are strongly encouraged to stay here in order to maximize their available funds. Rooms are available for the nights of July 15th through July 19th and must be booked for, and paid for, all five nights. If you are choosing this option and will need accomodations for the evening of July 20th, please contact the local organziers at antsmath2018 [at] gmail [dot] com.

To make a reservation by June 28 go to the University Housing page and scroll down to "ANTS-XIII (13th Algorithmic Number Theory Symposium)". Click on the "Register" button and then create an account through the University of Wisconsin's Iris system.

Please note that, due to shared bathrooms, on campus housing is only available for visitors 18 and older.

Off Campus Housing

We have reserved blocks of rooms at several hotels near the conference center. The quoted rates are available for check in as early as Saturday, July 14th (see: World Cup) and check out as late as Saturday, July 21st. See the blue icons on the map below for their locations.

Graduate Madison Hotel Hyatt Place Madison Downtown Holiday Inn Express & Suites Madison Central Best Western Plus InnTowner Madison

Grainger Hall

The conference takes place at Grainger Hall, the red mark on the map below. The building and conference rooms are all wheelchair accessible. If we can assist you with another accomodation, please contact the local organizers at antsmath2018 [at] gmail [dot] com.

Ideas for the free afternoon

The Wisconsin Memorial Union Terrace is the best spot in town to relax, enjoy a beverage, and take in a show. On July 18 the Terrace is open until midnight. Sadly there is no show the night of July 18, but there is live music the nights of July 19 and 20. Purchasing alcohol at the Union and the Union Terrace requires one to be a Union member, or to request a free daily guest pass at Request the pass the day you wish to use it, and there is a limit of three guest passes per year per person.

There are many ways to enjoy an afternoon out on one of Madison’s lakes. See for a long list of locations that will rent you a paddleboat, kayak, or canoe. Personally, we recommend renting from the Hoofers at the Wisconsin Union. See

Three places to visit in Madison which are free: Olbrich Botanical Gardens, Vilas Zoo, and the University Arboretum. Note that the conservatory at Olbrich is closed on July 18, but the free outdoor gardens are the preferred place to visit in the summer anyway. See and and

Simply walking up State Street to the State Capitol building is fun, especially since it is a pedestrian mall with limited motorized traffic. State Street has great restaurants and shopping, and the State Capitol at the end of it is open to the public. The Overture Center for the Performing Arts does not have any shows on July 18, but does have an art gallery which is open to the public.

Speaking of art galleries, the Chazen Museum of Art on campus is the best in town. It is open until 5 pm on July 18. See

Chicago is a little far for a day trip, so Milwaukee is recommended as the nearest big city, just an hour’s drive to the east of Madison. Recommended tourist sites include the Harley-Davidson Museum, the Milwaukee Art Museum (the most famous modern architecture in Wisconsin), the Milwaukee County Zoo, and Discovery World science and technology museum. See

Devil’s Lake State Park has fantastic hiking and amazing views. Entrance requires a vehicle admission sticker. The daily price is $8 if the vehicle has Wisconsin plates, $11 otherwise. Directions can be found at Location is an hour’s drive NW of Madison. If you go to Devil's Lake, don't miss Dr. Evermor's sculpture garden on US 12 coming into Baraboo. Google "Forevertron" to get the idea.

Blue Mounds State Park is only 30 min away and another nice place for a hike Governor Nelson State Park is even closer, on the north side of town

Generally speaking, you will not go wrong just driving west and keeping your eyes open. Spring Green, WI is an hour’s drive west of Madison and has a number of tourist destinations, including the Frank Lloyd Wright house Taliesin, the studio and estate of one of the world's great architects, with an ego to match his reputation. If you visit the place your guides will still speak in hushed, reverent tones about "Mr. Wright." Try to get a tour (but be warned they are pricey).

House on the Rock, to be honest, is rather overpriced for what it offers. Only go if you wish to see Middle America culture at its weirdest (or are a fan of Neil Gaiman's American Gods). A better option in Spring Green is to see a play at the American Player’s Theater, which on the night of July 18 has two different productions on offer. Go to

Platteville (75 miles) has a couple of interesting museums. The Mining Museum is an old zinc mine, devoted to Americana. See here

© 2017-2018 Jennifer Paulhus (with thanks to Kiran S. Kedlaya, and by extension Pierrick Gaudry and Emmanuel Thomé)