Groupoidfest 2017

Department of Mathematics, University of Colorado Boulder

March 25 and 26, 2017

University of Colorado at Boulder


The organizers of Groupoidfest 2017 are Arlan Ramsay, Alex Kumjian and Leonard Huang.
Please contact any one of the organizers if you have questions about the conference.

Venue and Campus Map

The conference will be held in Room 350 of the Mathematics Building (2300 Colorado Avenue).
The Mathematics Building is located at the southwest corner of the intersection of Colorado Avenue and Folsom Street.

The main campus of the University of Colorado Boulder is bounded on the east by 28th Street (US 36), on the west by Broadway, on the north by Boulder Creek, and on the south by Baseline Road.

A map of the main campus is available here.

List of Participants

Note: An asterisk (*) indicates a confirmed speaker.

Konrad Aguilar
University of Denver
Jonathan Brown*
University of Dayton
Danny Crytser*
Kansas State University
Nathan Davidoff
University of Colorado Boulder
Valentin Deaconu*
University of Nevada, Reno
Carla Farsi
University of Colorado Boulder
Elizabeth Gillaspy*
University of Münster, Germany
Leonard Huang*
University of Colorado Boulder
Steve Hurder
University of Illinois at Chicago
Daniel Ingebretson*
University of Illinois at Chicago
Marius Ionescu*
United States Naval Academy
Alex Kumjian
University of Nevada, Reno
Frédéric Latrémolière
University of Denver
Shen Lu
University of Colorado Boulder
Olga Lukina*
University of Illinois at Chicago
Judith Packer
University of Colorado Boulder
Alan Paterson*
University of Mississippi (Professor Emeritus)
Arlan Ramsay
University of Colorado Boulder (Professor Emeritus)
Sarah Reznikoff
Kansas State University
Laura Scull*
Fort Lewis College
Jack Spielberg*
Arizona State University
Thomas Timmermann*
University of Münster, Germany
Marty Walter
University of Colorado Boulder
Jordan Watts*
University of Colorado Boulder

Conference Schedule

The conference schedule is available here.

Note: Due to a large number of requests to give talks, in order to accommodate all speakers, the duration of each talk will be limited to 30 minutes only, with an additional 5 minutes for questions and answers.

Dinner banquet: A dinner banquet will be held on March 25, 6:30 p.m., at Taj Indian Cuisine. Please inform any of the organizers whether or not you would be interested in attending the banquet.

Titles and Abstracts

The titles and abstracts of talks are available here. Links to the presentation slides for some of the talks are now available!

Transportation to and from Denver International Airport (DIA)

Conference participants who are traveling by air to DIA may book a shuttle for a one-way or round trip with Green Ride Boulder.
Each passenger pays a flat fee of $34.00 (prior to tipping) each way.
There is no discounted rate for a round trip.

Conference participants may also utilize the Route AB: Boulder/DIA bus service that is operated by the Regional Transportation District (RTD).
The weekday westbound (DIA to Boulder) schedule is available here, while the Sunday eastbound (Boulder to DIA) schedule is available here.
Upon arrival at DIA, please proceed to Gate 8 of the Denver Airport Station, which is located at the DEN Transit Center adjacent to the Westin DIA.
The DEN Transit Center may be accessed at the south end of the Jeppesen Terminal by exiting through the glass doors and taking the escalator down to ground level.
Each passenger must purchase a one-way ticket for $9.00 when boarding the bus. Exact change is required!
A map that displays all the stops for the bus service within Boulder is available here.


The following is a list of hotels that are within a mile from the Mathematics Building.

Name of Hotel
Street Address
Phone Number
Best Western Plus Boulder Inn
770 28th Street
(303) 449-3800
Boulder University Inn
1632 Broadway
(303) 417-1700
Millennium Harvest House Boulder
1345 28th Street
(303) 443-3850
Rodeway Inn & Suites Boulder Broker
555 30th Street
(303) 444-3330


A map that displays all the parking lots on the main campus is available here.

Parking in Lot 359 (located next to the Mathematics Building on its west side) during the weekend requires an all-day permit that costs $4.00/day.
Parking in Lot 377 (located on the north side of Colorado Avenue, just across the road from the Mathematics Building) requires a permit (which you can purchase at a nearby pay-station) between 7:30 a.m. and 5:00 p.m.
Parking in Lot 436 and in the Regent Autopark parking garage/ramp (located at the southeast corner of the intersection of Colorado Avenue and Regent Drive, east of the Engineering Center) is free during the weekend.

Information about weekend parking permits may be found here.


The following is a list of restaurants that are within a 10-minute walk from the Mathematics Building, which would be convenient to visit for lunch.

Name of Restaurant
Street Address
Type of Cuisine
Aloy Thai
2720 Canyon Boulevard
Center for Community Dining
Center for Community, 2010 Willard Loop Drive (on campus)
Fusion (vegan options are available)
Rincon Argentino
Village Shopping Center, 2525 Arapahoe Avenue
Rincon Del Sol
2350 Arapahoe Avenue
Sushi Bistro TASUKI
1575 Folsom Street, #201
Taste of Philly
1575 Folsom Street, #101
Tibet Kitchen
2359 Arapahoe Avenue
East Asian
Tiffin’s India Cafe
2416 Arapahoe Avenue
Zolo Grill
Village Shopping Center, 2525 Arapahoe Avenue

The restaurants in the list above are all located around the intersection of Arapahoe Avenue and Folsom Street.
To head there, simply exit via the north entrance of the Mathematics Building and proceed north downhill along Folsom Street.

Those who would like to explore the food scene in Boulder are encouraged to visit the following restaurants.

Name of Restaurant
Street Address
Type of Cuisine
Hapa Sushi
Pearl Street Mall, 1117 Pearl Street
Jaipur Indian Restaurant
1800 Broadway, #160
Pearl Street Mall, 1136 Pearl Street
Jax Fish House & Oyster Bar
928 Pearl Street
The Med
1002 Walnut Street
OAK at Fourteenth
Pearl Street Mall, 1400 Pearl Street
Oven and grill

Last updated: May 15, 2017.