2026 Zassenhaus Groups and Friends Conference
2026 Zassenhaus Groups and Friends Conference
The Zassenhaus Groups and Friends Conference
Kent State University, May 30 and 31st, 2026
The 2026 Zassenhaus Groups and Friends Conference will take place at
Kent State, on May 30 and 31st of 2026. The conference was initiated
by Professor Hans Zassenhaus in the middle 1960's and is currently
held on an annual basis. On odd numbered years it is held at
Binghamton University. On even numbered years it is held at different
locations.
Following Prof Zassenhaus's tradition, we will welcome talks at all
levels; and while the main and central topic of the conference
continues to be groups, we are open to closely related topics like
loops, lattices, and more.
While there is no deadline for registering to attend, the deadline to submit an abstract is Friday, May 8.
The conference banquet will be at 6:00 pm on Saturday May 30 at Laziza's in downtown Kent. The banquet will be buffet style that will include beef, chicken, and vegetarian options. The cost includes soft drinks and tea and coffee. The banquet will cost $60 per person. Please sign up for the banquet by Friday May 22 so that we can have an accurate count.
Local Organizers
- Mark Lewis - Kent State University
- Wil Cocke - U.S. Army, Carnegie Melon University
- J. P. Cossey - University of Akron
- Nguyen Hung - University of Akron
- Jeff Riedl - University of Akron
The Permanent Organizing Committee
- Tuval Foguel - Adelphi University
- Fernando Guzman - Binghamton University (emeritus)
- Luise Kappe - Binghamton University (emeritus)
- Zekeriya (Yalcin) Karatas - University of Cincinnati Blue Ash College
- Arturo Magidin - University of Louisiana - Lafayette
- Hung Tong-Viet - Binghamton University
Kent State University is the highest-ranked public university in
northern Ohio on the Top Public Schools and Best National Universities
lists by U.S. News & World Report. Kent State also holds the esteemed
distinction of being one of only five institutions in Ohio to be
recognized as an R1 top-tier research university by the Carnegie
Classification of Institutions of Higher Education.
Kent State University is ideally situated in Northeast Ohio. Located
just six miles off I-76, our campus is easy to find and accessible from
neighboring Akron/Canton and Cleveland airports. Kent State's 953 acre
campus can also be reached by car, shuttle and public transportation.
The Mathematical Sciences department offers a wide variety of courses
and degree options in mathematics and applied mathematics at the
Bachelor’s, Master’s, and Ph.D. levels.
Kent State also offers a Bachelor’s degree in actuarial mathematics, and
a Master’s degree in data science (offered jointly with the Department
of Computer Science). Its Ph.D. program is one of six mathematics Ph.D.
programs in the Ohio public university system. The actuarial mathematics
program is one of only four in the Ohio public university system to
receive the UCAP–Advanced Curriculum designation by the Society of
Actuaries.
Parking On Campus
Parking on campus is free on Saturday and Sunday.
Lodging
Several hotels are available near Kent State University's campus.
Kent State University Hotel and Conference Center
215 S. Depeyster Street, Kent, Ohio 44240
Phone: 330-346-0100
We have a block of 20 rooms available each night. Any unused rooms will be released on April 14. The booking link is below.
The group rate is $179 plus tax. Regular rates are $233 for queen beds and $198 for king beds.
Complimentary internet, complimentary hot breakfast, outdoor pool. Pet-friendly with pet fee. Approximately 25-30 minute walk to conference venue.
Hampton Inn
4406 State Route 43, Kent, Ohio, 44240
Phone: 1-800-HAMPTON
Complimentary internet, fitness center, indoor pool. Approximately 8-minute drive to campus..
Holiday Inn Express
1215 Sanctuary View Drive Kent, Ohio 44240
For Call-In RESERVATIONS, please call 1- 330-673-9200
We have a block of 20 rooms available each night. Any unused rooms will be released on May 1. After this date, reservations will be accepted on a space and rate available basis. The booking link is below.
Holiday Inn Express Reservation
The group rate is $149 plus tax.
Budget hotel with complimentary internet, hot coffee in lobby. Pet-friendly. Approximately 8-minute drive to campus.
Conference Schedule
A pdf copy of the schedule is here.
The full program with abstracts is here.
Saturday, May 30, 2026 – Morning Session
| Time | Event |
|---|---|
| 7:00 AM – 7:45 AM | Conference registration |
| 8:00 AM – 8:10 AM | Opening Remarks |
| 8:20 AM – 8:40 AM | Mandi SCHAEFFER FRY (University of Denver) Isaacs-Navarro’s Galois Refinement of the McKay Conjecture |
| 8:50 AM – 9:10 AM | Hanlin JANG (Binghamton University) The building associated to a BN-pair |
| 9:20 AM – 9:40 AM | Eden KETCHUM (University of Denver) Characters and Sylow subgroup generation |
| 9:50 AM – 10:10 AM | Coffee Break |
| 10:10 AM – 10:30 AM | Alexander BORISOV (Binghamton University) On the problem of faithfulness of the Burau representation of B4 |
| 10:40 AM – 11:00 AM | Inna SYSOEVA (Binghamton University) Welded braid groups, their (irreducible) representations, and linearity questions |
| 11:10 AM – 11:30 AM | Casey DONOVEN (Montana State University Northern) 2-coverings of semigroups |
| 11:40 AM – 12:00 PM | Shannon TEFFT (Rose-Hulman Institute of Technology) Examining Ducci sequences on Znm where m, n are powers of 2 |
| 12:10 PM – 12:15 PM | Conference photograph |
| 12:15 PM – 2:00 PM | Lunch Break |
Saturday, May 30, 2026 – Afternoon Session
| Time | Event |
|---|---|
| 2:00 PM – 2:20 PM | Thomas KELLER (Texas State University) Gruenberg-Kegel graphs of T-solvable groups |
| 2:30 PM – 2:50 PM | Alexa RENNER (Rose-Hulman Institute of Technology) Prime graphs of infinite groups |
| 3:00 PM – 3:20 PM | Andrew SUMMERS (Kent State) Classifying character degree graphs with eight vertices |
| 3:30 PM – 3:40 PM | Short Break |
| 3:40 PM – 4:00 PM | Tuval FOGUEL (Adelphi University) Trivial-intersection transitivity in finite groups |
| 4:10 PM – 4:30 PM | Arturo MAGIDIN (University of Louisiana at Lafayette) Dominions and nonsurjective epimorphisms in varieties of groups |
| 4:40 PM – 5:00 PM | Fernando GUZMAN (Binghamton University) Mixed-magmas and homotopism theorems |
| 6:00 PM – 9:00 PM | Conference Banquet Laziza’s – Downtown Kent |
Sunday, May 31, 2026; Morning Session
| Time | Event |
|---|---|
| 8:00 AM – 8:20 AM | Alexandre TURULL (University of Florida) The linear characters of basic characters |
| 8:30 AM – 8:50 AM | Thomas WOLF (Ohio University) Group properties determined by 2-generator subgroups |
| 9:00 AM – 9:20 AM | Nic BEIKE (Kent State) Non-nilpotent solvable groups with four prime power character degrees and derived length four |
| 9:30 AM – 9:50 AM | Wil COCKE (U.S. Army and Carnegie Mellon University) The category of centralizer lattices |
| 10:00 AM – 10:30 AM | Coffee Break |
| 10:30 AM – 10:50 AM | JP COSSEY (University of Akron) The number of ordinary characters containing a Brauer character in a solvable group |
| 11:00 AM – 11:20 AM | Ryan McCULLOCH (Binghamton University) Finite groups with many elements of the same order |
| 11:30 AM – 11:50 AM | Brandon MARTIN (Kent State) Groups with a fixed character degree |
| 12:00 PM – 12:20 PM | Thu QUAN (Binghamton University) A generalization of Camina pairs and orders of elements in cosets |
| 12:30 PM – 12:50 PM | Samantha WYLER (Kent State) Semi extra special groups of order p12 and center p2 |
| 12:50 PM – 1:00 PM | Closing Remarks |
The Zassenhaus Groups and Friends Conference
Archive
Before 2015, the Zassenhaus Group Theory Conference merged with the Ohio State-Denison Mathematics Conference in even-numbered years, with the group theorists meeting in the odd-numbered years at various locations around the country. The even-numbered year conferences held in Ohio originally included group theory, ring theory, and combinatorics (areas in which Hans Zassenhaus was active).
- 2025 - Zassenhaus Groups and Friends Conference, Binghamton University
- 2024 - Zassenhaus Groups and Friends Conference, Texas State University
- 2023 - Zassenhaus Groups and Friends Conference, Binghamton University
- 2022 - Zassenhaus Groups and Friends Conference – One session online, one session in-person at Hofstra University
- 2021 - Online Zassenhaus Groups and Friends Conference
- 2020 - Online Zassenhaus Groups and Friends Conference (2020 - Zassenhaus Groups and Friends Conference, Hofstra University, Hempstead, New York – Face-to-face Meeting Cancelled due to COVID19 Pandemic)
- 2019 - Zassenhaus Groups and Friends Conference, Binghamton University (SUNY), Binghamton, New York:
- 2018 - Zassenhaus Groups and Friends Conference, University of South Florida, Tampa, Florida: Abstracts + Program – Group Photo – Participant List
- 2017 - Zassenhaus Groups and Friends Conference, Binghamton University (SUNY), Binghamton, New York: Abstracts + Program – Group Photo (labelled) – Group Photo (unlabelled).
- 2016 - Zassenhaus Group Theory Conference, Adelphi University, Garden City, New York: Abstracts + Program – Group Photo.
- 2015 - Zassenhaus Group Theory Conference, Binghamton University (SUNY), Binghamton, New York: Abstracts + Program – Group Photo.
- 2014 - The XXXIInd Ohio State-Denison Mathematics Conference, The Ohio State University, Columbus, Ohio: Abstracts + Program.
- 2013 - Zassenhaus Group Theory Conference, Western Carolina University, Asheville, North Carolina: Abstracts + Program – Group Photo.
- 2012 - The XXXIst Ohio State-Denison Mathematics Conference, The Ohio State University, Columbus, Ohio: Abstracts – Schedule.
- 2011 - Zassenhaus Group Theory Conference, Towson University, Towson, Maryland: Abstracts + Program.
- 2010 - The XXXth Ohio State-Denison Mathematics Conference, The Ohio State University, Columbus, Ohio: Abstracts +Program.
- 2009 - Zassenhaus Group Theory Conference, Franklin and Marshall College, Lancaster, Pennsylvania: Abstracts + Program.
- 2008 - The XXIXth Ohio State-Denison Mathematics Conference, The Ohio State University, Columbus, Ohio: Abstracts + Program.
- 2007 - Zassenhaus Group Theory Conference, St. Louis University, St. Louis, Missouri: Abstracts + Program.
- 2006 - The XXVIIIth Ohio State-Denison Mathematics Conference, The Ohio State University, Columbus, Ohio.
- 2005 - Zassenhaus Group Theory Conference, Auburn University Montgomery, Montgomery, Alabama: Abstracts + Program – Group Photo.
- 2004 - The XXVIIth Ohio State-Denison Mathematics Conference, The Ohio State University, Columbus, Ohio.
- 2003 - Zassenhaus Group Theory Conference, University of Evansville, Evansville, Indiana: Abstracts + Program.
- 2002 - The XXVIth Ohio State-Denison Mathematics Conference, Denison University, Granville, Ohio.
- 2001 - Zassenhaus Group Theory Conference, New College of USF, Sarasota, Florida – Group Photo.
- 2000 - The XXVth Ohio State-Denison Mathematics Conference, The Ohio State University, Columbus, Ohio.
- 1999 - Groups 99: The Zassenhaus Group Theory Conference, Binghamton University, Binghamton, New York: Abstracts + Program – Schedule – Group Photo.
- 1998 - The XXIVth Ohio State-Denison Mathematics Conference, The Ohio State University, Columbus, Ohio.
- 1997 - Zassenhaus Group Theory Conference, New College of USF, Sarasota, Florida.
- 1995 - Zassenhaus Group Theory Conference, Miami University of Ohio, Miami, Ohio: Ephemera
- 1994 - The XXIInd Ohio State-Denison Mathematics Conference, The Ohio State University, Columbus, Ohio: Program
- 1993 - Zassenhaus Group Theory Conference, Binghamton University (SUNY), Binghamton, New York: Program
- 1992 - The XXIst Ohio State-Denison Mathematics Conference, The Ohio State University, Columbus, Ohio: Program
- 1988 - The XXth Ohio State-Denison Mathematics Conference, The Ohio State University, Columbus, Ohio: Program
- 1987 - The Regional Conference on Group Theory, The University of Pittsburgh, Pittsburgh, Pennsylvania: Program
- 1985 - The Regional Conference on Group Theory, The University of Pittsburgh, Pittsburgh, Pennsylvania: Program
- 1984 - The XVIIth Ohio State-Denison Mathematics Conference, The Ohio State University, Columbus, Ohio: Program
- 1983 - The 1983 Annual Regional Conference on Group Theory, The University of Pittsburgh, Pittsburgh, Pennsylvania: Program
- 1981 - The XVIth Ohio State-Denison Mathematics Conference, Denison University, Granville, Ohio: Program
- 1980 - The XVth Ohio State-Denison Mathematics Conference, Denison University, Granville, Ohio: Program
- 1979 - The XIVth Ohio State-Denison Mathematics Conference, Denison University, Granville, Ohio: Program
- 1971 - The 10th Denison Conference in Group Theory, Lie Algebras, and Algebraic Geometry, Denison University, Granville, Ohio: Program
- 1969 - The 9th Denison Mathematical Conference, Denison University, Granville, Ohio: Program
- The Ohio State University Department of Mathematics maintains a website with more information about the life and work of Hans Zassenhaus, as does MacTutor History of Mathematics Archive.
Related Conferences
Over the years there have been conferences organized and/or attended by regular attendees of the Zassenhaus Conference series. Many of the programs and abstract booklets have been saved and are posted here for completion.
- 2007: Symposium to Mark the 70th Birthday of Derek J. S. Robinson at Auburn University at Montgomery, Montgomery, AL; organized by Tuval Foguel and Matthew Ragland. Program
- 2002: The Creitz Conference on Group Theory at Franklin & Marshall College, Lancaster, PA; organized by Arny Feldman. Program