Emily Gunawan

Past and upcoming meetings/conferences/talks

2026

• Wed-Sat, August 5-8, 2026. Math Fest, Boston, MA.
• Spring 2026, (pending funding) research workshop: Farey’s legacy in discrete geometry and number theory, Woburn, England, UK (hometown of the geologist John Farey (1766–1826))

2025

• Mon-Fri, July 21-25, 2025. (Afternoons during the first Congress days, July 21-24). Special Session on Representation Theory of Algebras at the Mathematical Congress of the Americas in Miami, Florida.
• Mon-Fri, June 2–6, 2025. Summer School in Total Positivity and Quantum Field Theory at CMSA (Harvard), 20 Garden Street, Cambridge MA.
• Tue-Fri, May 20-23, 2025. Invited Minisymposia "Total positivity and applications" at Canadian Discrete and Algorithmic Mathematics Conference (CanaDAM 2025) in Ottawa, Canada. Title: Superunitary regions of cluster algebras.
• Also at CanaDAM, CM22: Recent advances in enumerative and geometric combinatorics on graphs. Title: TBA
• Mon-Fri, May 12-16, 2025. Frieze patterns in algebra, combinatorics and geometry at CIRM, Luminy, France
• Wed-Mon, April 23-28, 2025. Maurice Auslander Distinguished Lectures and International Conference at WHOI.
• Sat-Sun, April 5-6, 2025. AMS Spring Eastern Sectional Meeting in Hartford, CT.
  • Co-organizer of special session Geometric and Algebraic Combinatorics".
  • Speaker at special session Dynamical Algebraic Combinatorics" Title: A new Motzkin object from box-ball systems. See slides
• Fri-Sat, March 21-22, 2025. The 2025 edition of the Mid-Atlantic Algebra, Geometry, and Combinatorics (MAAGC) Workshop . Title: Pattern-avoiding c-Birkhoff polytopes. See talk notes, see video.
• Sun-Fri, January 19-24, 2025. 25w5483: Online BIRS Workshop, "Lattice Theory". Online participant.

2024

• Fri, November 15. Algebra symposium. Université de Sherbrooke, Sherbrooke, Québec. Title: c-Birkhoff polytopes and the Auslander--Reiten quivers.
• Fri-Sat, October 4-5. 34e rencontre de théorie des représentations des algèbres et sujets connexes/34th meeting on representation theory of algebras and related topics, Université de Sherbrooke, Sherbrooke, Québec. Participant.
• Sat, September 21. Women in Mathematics in New England (WIMIN) 2024 at Smith College, Northampton, MA. Participant. (Did not go.)
• Wed-Sat, June 26-29. Conference on Statistical and Dynamical Combinatorics, in honor of Jim Propp’s 2^{4 choose 2}-th birthday. MIT, Cambridge, MA. Title: Snake graphs (Jim's contribution to cluster algebras and friezes). Date: Wed, June 26. See slides.
• Mon-Fri, June 17-21. Cluster algebra Summer School Lecturer. Title: Maximal almost rigid modules.
• Mon-Tue, June 17-18. AlCoVE 2024, virtual. Participant.
• Mon-Fri, June 3-7, 2024. The Many Combinatorial Legacies of Richard P. Stanley: Immense Birthday Glory of the Epic Catalonian Rascal at Harvard Geological Lecture Hall. Participant.
• Wed-Fri, May 29, 2024 at 9:00 am to May 31, 2024 at 5:00 pm. Amplituhedra and Positive Geometry at Harvard University CMSA. Participant.
• Wed, May 15. Symposium at Aarhus Homological Algebra Group, Aarhus University, Denmark. Title: Pattern-avoiding polytopes and Cambrian lattices via the Auslander—Reiten quivers.
• Wed-Mon, April 24-29. Maurice Auslander International Conference at WHOI. Title: Pattern-avoiding polytopes and Cambrian lattices via the type A Auslander-Reiten quivers. See notes.
• Tue, March 26. Brandeis Combinatorics Seminar. Title: Pattern-avoiding polytopes and Cambrian lattices.
• Sun-Fri, January 14-19. Oberwolfach Workshop 2403 - Cluster Algebras and Its Applications. 10-minute talk on Tues, Jan 17. Title: Pattern-avoiding polytopes and Cambrian lattices. See notes and extended abstract (a little over 1 page).

2023

• Tue, October 24. Dartmouth Combinatorics Seminar. Title: Box-ball systems, RSK tableaux, and the Motzkin numbers. See slides.
• Sat-Sun, September 22-23. 33e rencontre de théorie des représentations des algèbres et sujets connexes, Université de Sherbrooke, Sherbrooke, Québec. Title: Superunitary regions, generalized associahedra, and friezes of Dynkin type cluster algebras. See slides
• Thurs, September 21. FD Seminar (Online seminar on representation theory of finite-dimensional algebras). Title: Triangulations and maximal almost rigid modules over gentle algebras. See slides and slides (filled)
• Wed, September 13. Mathematics and Statistics Colloquium, UMass Lowell. Title: Triangulations and maximal almost rigid modules over gentle algebras.
• July 10-14. Combinatorial Representation Theory Workshop, University of Leeds, UK. Title: Maximal almost rigid modules over gentle algebras. See lecture notes.
• Mon-Fri, June 12-16. Advances in Representation Theory of Algebras (ARTA) IX, Queen's University in Kingston, Canada. Title: Triangulations and maximal almost rigid modules. See notes.
• Saturday-Sunday, April 15-16. Special Session on Cluster Algebras, Positivity and Related Topics (organized by Eric Bucher, John Machacek, and Nicholas Ovenhouse) at the AMS 2023 Spring Central Sectional Meeting at the University of Cincinnati. Title: Superunitary regions, generalized associahedra, and friezes of Dynkin type cluster algebras (note the title and topic change). See slides.
• Wednesday-Friday. March 22-24. Critical Issues in Mathematics Education 2023: Mentoring for equity at Berkeley, CA + Online. Online participant.
• Friday, March 17. Department of Mathematics and Statistics Colloquium at UMass Lowell. Title: From permutations to waves, triangulations, and representations. See slides
• Wednesday, March 15. Department of Mathematics and Computer Science. See slides
• Saturday-Sunday, March 4-5. Southwest Local Algebra Meeting at University of North Texas in Denton, TX. Poster title: Triangulations and maximal almost rigid representations. See poster.
• Friday, February 24. Mathematical and Statistical Sciences Colloquium. See slides
• Monday, February 6. Mathematical Sciences Department Colloquium. See slides
• Thursday-Friday, January 5-6. AMS Special Session on Research Community in Algebraic Combinatorics at Joint Mathematics Meetings (JMM) in Boston, MA. Title: Triangulations and maximal almost rigid representations. See slides.
• Saturday, January 7. MSRI (SLMath) Special Session on Summer Research in Mathematics (SRiM): Cluster Algebras and Related Topics at Joint Mathematics Meetings (JMM) in Boston, MA. Title: Superunitary regions, generalized associahedra, and friezes of Dynkin type cluster algebras. See slides.
• Presentations by my coauthors during Joint Mathematics Meetings (JMM) January 2023:
  • Friday, January 6. AMS Special Session on Research Community in Algebraic Combinatorics: My coauthor/ our group leader Bridget Tenner is giving a talk. Title: RSK tableaux of boolean and fully commutative permutations
  • Friday, January 6. AMS - PME Undergraduate Student Poster Session, I: My students/coauthors Dash Stevanovich et al are presenting a poster. Title: A new Motzkin object from box-ball systems. See poster.
  • Thursday, January 5. Pi Mu Epsilon Contributed Session on Research by Undergraduates I: My students/coauthors Raina Okonogi-Neth et al are giving a talk. Title: Soliton Decompositions of Box-Ball Systems with RSK.

2022

• October 29-30. Maurice Auslander Distinguished Lectures and International Conference 2022. Title: Triangulations and maximal almost rigid modules. slides.
• September 25 - September 30. Bases for Cluster Algebras. Participant.
• Friday, September. Algebra and Representation Theory Seminar (ARTS), University of Oklahoma, Norman. Title: "Superunitary regions, generalized associahedra, and friezes of Dynkin type cluster algebras", see talk notes.
• Thurs, July 7. Waterloo Algebraic and Enumerative Combinatorics Seminar Spring 2022. Title: Box-ball systems and Robinson–Schensted–Knuth tableaux. See slides.
• May 23-27. MRWAC. Presented a problem on Order polytopes and Birkhoff-like polytopes coming from Cambrian lattices. Problem title: Volumes of pattern-avoiding polytopes and Cambrian lattices.
• Mon-Fri, May 16-20. Open Problems in Algebraic Combinatorics (OPAC) at University of Minnesota. Participant.
• Fri, April 22. Spring Awards Banquet 2022, University of Oklahoma. Title: Polytopes and the brewery problem. See slides.
• Sun-Fri, April 3-8. Women in Noncommutative Algebra and Representation Theory 3 at Banff International Research Station for Mathematical Innovation and Discovery (BIRS). Presented an intro talk 'What is ... a connection between friezes and cluster algebras?' with Emine Yıldırım. See video recording and slides.
• Sat-Sun, March 12-13. Representation Theory of Algebras and Related Combinatorics (formerly known as Special Session 24A of the AMS meeting in Charlottesville), organized by Markus Schmidmeier and Khrystyna Serhiyenko. Title: Triangulations & maximal almost rigid modules. See slides.
• Mon, Feb 28. Cluster Algebras and Related Topics Seminar (CARTS), University of Oklahoma. Title: Triangulations and maximal almost rigid modules.
• Thurs-Fri, Feb 10-11. Research Community in Algebraic Combinatorics. Presented talk on Project 3: Perspectives on Permutations on Thurs, Feb 10.
• Mon-Thurs, Jan 10-13 (hybrid), Mon-Thurs, 17-20 (online). FPSAC 2021, at Bar-Ilan University in Ramat-Gan, Israel. Participant. My coauthor is presenting a poster.
• January 5-7. Workshop on Geometric and Homological Methods in Representation Theory, virtual. Participant.

2021

Wed, Dec 15. Lancaster University Pure Maths Seminar. Title: Box-ball systems and RSK. See slides.

Wed, Dec 1. University of Manchester Geometry and Topology Seminar. Title: Superunital regions of cluster algebras and positive integral friezes, work in progress with Greg Muller.

Mon, Nov 22. Queen's University Algebra and Geometry Seminar. Title: "Cambrian Combinatorics on quiver representations (type A and generalizations to gentle algebras)" See talk notes.

Mon-Fri, Nov 8-12. Interdisciplinary applications of cluster algebras. Participant.

October 31 to November 5 Banff International Research Station for Mathematical Innovation and Discovery (BIRS): "Dynamical Algebraic Combinatorics" workshop at the UBC Okanagan campus in Kelowna, B.C., virtual. Poster Title: "Box-Ball Systems and Robinson–Schensted–Knuth Tableaux" (UConn Math REU 2020 and SUMRY 2021). See poster presentation slides.

Tues, Sept 28. Isaac Newton Institute Cluster algebras and representation theory (CAR) Seminar. Title: "Cambrian Combinatorics on quiver representations (type A)". See talk notes.

Mon-Fri, Sept 20-24. New developments in representation theory arising from cluster algebras. Participant.

Mon-Fri, Sept 13-17. New developments in representation theory arising from cluster algebras research school. Participant.

Wed, Sept 8. Michigan State University Combinatorics and Graph Theory Seminar. Title: "Box-Ball Systems and Robinson–Schensted–Knuth Tableaux" (UConn Math REU 2020 and SUMRY 2021). See slides.

Thurs-Fri, Aug 5-6. Research Community in Algebraic Combinatorics. Participant. Bridget Tenner's talk "Perspectives on permutations".

Wed-Thurs, July 28-29. Virtual 2021 Math REU Conference.

• Box-ball systems and RSK recording tableaux, see video recording and slides

June 1 - July 30. SUMRY (Virtual). Mentor.

Tuesday, July 20, 2021 Köln Algebra and Representation Theory Research Seminar. Title: "Cambrian Combinatorics on quiver representations (type A)" (virtual talk), see slides and notes.

Mon-Fri, June 21-25. (Virtual) Summer School of Algebraic Combinatorics. Title: "Cambrian Combinatorics on quiver representations (type A)" (virtual talk), see slides and notes.

Fri, June 18. UConn Math REU Colloquium. Title: "Box-ball systems and tableaux" (virtual talk).

Sat-Fri, May 22-28. (Virtual) 2021 Women and Mathematics "Representation Theory: Categories & Combinatorics". Participant. Postdoc 3-minute Lightning Talk: "Cluster algebras, box-ball system", see slides.

Sat, May 22. (Virtual) Creating a Better Summer Experience: A DEI Workshop for REU Directors and Faculty Mentors. Participant.

Friday, April 23, 2021 Algebra and Representation Theory Seminar (ARTS), University of Oklahoma, Norman. Title: "Box-ball systems and Robinson-Schensted-Knuth tableaux" (virtual talk), see slides.

Jan 6-9, 2021. Joint Mathematics Meetings (JMM). Participant.

2020

Monday, December 7, 2020 The Applied Algebra Seminar, A Monday afternoon research seminar, 3-4pm, York University, Toronto, Ontario, Canada. Title: "Cambrian Combinatorics on quiver representations" (virtual talk).

Friday, December 4, 2020 Algebra and Representation Theory Seminar (ARTS), University of Oklahoma, Norman. Title: "Cambrian combinatorics on quiver representations" (virtual talk).

Saturday, November 14, 2020 Triangle Lectures in Combinatorics (virtual). Participant.

October 19 to October 30, 2020 Banff International Research Station for Mathematical Innovation and Discovery (BIRS): Dynamical Algebraic Combinatorics, Banff, AB, Canada virtual.

• Title: "Infinite friezes and bracelets" (virtual talk), see video recording and slides
• REU2020 Students' poster: Box-ball system and RSK.

Friday, October 9, 2020 Algebra and Representation Theory Seminar (ARTS), University of Oklahoma, Norman. Title: "Infinite friezes" (virtual talk), see slides.

Thursday, July 30, 2020 2020 Virtual Math REU Conference (Amherst College, UConn, UMass, Williams College, and Yale University):

1. The Box Ball System and Robinson-Schensted insertion tableaux by Ben Drucker, Eli Garcia, Aubrey Rumbolt (video recording)
2. Chains and Antichains in the Bipartite Cambrian and Tamari Lattices by Rose Silver (video recording, slides)

Monday, July 27, 2020 Participant presentations of MRC Week 1b: Combinatorial Applications of Computational Geometry and Algebraic Topology. Title: "The Box-ball System: Soliton Decomposition and Robinson-Schensted algorithm (UConn Math REU 2020)" (virtual talk) slides.

Sunday, June 28--Saturday, July 11, 2020 (postponed to Summer 2022) Summer Research in Mathematics program, MSRI, Berkeley, CA.

June 22--26, 2020 (postponed to June 21-25, 2021) School in Algebraic Combinatorics, Montreal, QC, Canada.

June 15--June 19, 2020 (postponed to June 2021) Advances in Representation Theory of Algebras (ARTA) at Queen's University, Kingston, Ontario, Canada.

May 31--June 6, 2020 (postponed to May 30 - June 5, 2021) MRC Week 1b: Combinatorial Applications of Computational Geometry and Algebraic Topology

May 18--22, 2020 (postponed to 2022) Open Problems in Algebraic Combinatorics (OPAC) at University of Minnesota. Participant.

April 22--27, 2020 (suspended for one year) Maurice Auslander Distinguished Lectures and International Conference at Woods Hole Oceanographic Institute, Quissett Campus in Woods Hole, MA.

Wednesday, March 25 (Canceled) MIT-Harvard-MSR Combinatorics Seminar, Cambridge, MA.

Monday, March 30, 2020 (Canceled) Combinatorics Seminar at The Department of Mathematics at University of Wisconsin, Madison

Friday, March 13, 2020 (Canceled) Mathematics Seminar at Hofstra University, Hempstead, NY.

Monday, March 9, 2020 at 12:15-1:15 GASC Seminar at Northeastern University, Boston, MA. "Cambrian Combinatorics on quiver representations"

Tuesday, February 18, 2020. 30-minute research talk "Cluster algebras and friezes" (slides) and Mathematics Colloquium whiteboard talk "Combinatorial and algebraic interpretation of the Catalan numbers" (talk notes and handout) at Fairfield University

Friday, Feb 14, 2020. Math Colloquium at College of Charleston. "Friezes, cluster algebras, and quiver representations" (handout).

Friday, February 7, 2020, Cluster Algebras Seminar, University of Connecticut, Storrs, CT. "Introduction to Cluster Algebras"

2019

• Monday, September 30, 2019 Algebra and Combinatorics Seminar at North Carolina State University. Title: Cambrian combinatorics on quiver representations. (Handout/Image aid)
• Saturday, September 7, 2019 The XXXIst Meeting on REPRESENTATION THEORY of ALGEBRAS at University of Sherbrooke, QC, Canada on: Cambrian combinatorics on quiver representations. (Handout/Image aid)
• August 16--19, 2019 Homological methods and tilting theory of finite dimensional algebras (in honor of Gordana Todorov's birthday) at University of Iowa, Iowa City, IA on: "Cambrian combinatorics on quiver representations"
• August 5--23, 2019 Quiver varieties and representation theory: August 8--9, 2019 Focus week on cluster algebras and quiver representations in Montreal, QC, Canada. Participant.
• July 22--26, 2019 SageMath and Macaulay 2 - An Open Source Initiative at the IMA/ University of Minnesota, Minneapolis. Project Leader.
• July 8--12, 2019 Free and Practical Software for Algebraic Combinatorics at University of Ljubljana, Slovenia. Participant.
• July 1--5, 2019 FPSAC at University of Ljubljana, Slovenia. Presented a talk for the paper "Unitary friezes and frieze vectors". My co-author Rachel Bailey also presented a poster for the paper "Cluster Algebras and Binary Words".
• June 3--June 21, 2019 Cluster Algebras 2019 (CA19) at RIMS, Kyoto University, Kyoto, Japan. (Notes/slides/posters of lectures, talks, and poster presentations (set up by Bernhard Keller).) Presented a poster for the paper "Frieze vectors and unitary friezes".
• April 24--29, 2019 Maurice Auslander Distinguished Lectures and International Conference at Woods Hole Oceanographic Institute, Quissett Campus in Woods Hole, MA. "Frieze vectors and unitary friezes" 10-minute talk.
• Co-organizer, AMS Special Session on cluster algebras and related topics at AMS Spring Eastern Sectional Meeting at UConn Hartford on April 13-14, 2019 at HTB 226: picture 1 and picture 2.
• April 1, 2019, Seminar at University of Sherbrooke, QC, Canada. Frieze vectors and unitary friezes, handout
• 2.20.2019, University of Connecticut Math Club, Storrs, CT. Title: Binomial coefficients and q-binomial coefficients. (Handout: .pdf file, source code for my students: .tex file, .bib file)

2018

November 8--11, 2018 Combinatorics and beyond: the many facets of Sergey Fomin's mathematics at University of Michigan, Ann Arbor. Participant.

Monday October 1, 2018 at 12:15-1:15 GASC Seminar at Northeastern University, Boston, MA. "Frieze vectors and unitary friezes".

9.20.2018 Math Thursday Lunch Talk at Smith College, Northampton, MA. See slides.

9.7--9.8.2018 The XXXth Meeting on REPRESENTATION THEORY of ALGEBRAS at University of Sherbrooke, QC, Canada. "Frieze vectors and unitary friezes"

9.5.2018, Algebra Seminar at University of Connecticut, Storrs, CT. "Frieze vectors and unitary friezes".

7.23--7.27.2018, SageDays@ICERM: Combinatorics and Representation Theory at ICERM, Brown University, Providence, RI. See talk materials (Jupyter notebook or HTML slides) and video recording.

7.9--7.13.2018, Sage Days 95: Women In Sage in Saint-Faustin-Lac-Carré, QC, Canada. Download slides days95.pdf and Jupyter notebook worksheet frieze.ipynb

7.6.2018, Séminaire de Combinatoire et d'Informatique Mathématique du LaCIM, seminar of combinatorics and discrete mathematics at LaCIM in Montréal, Canada.

6.2--6.8.2018, Interactions of quantum affine algebras with cluster algebras, current algebras and categorification at The Catholic University of America, Washington, D.C. Participant.

5.7--5.10.2018, Cluster Algebra and Mathematical Physics (CAMP) Conference at Michigan State University, East Lansing, MI.

4.28--4.20.2018, Maurice Auslander Distinguished Lectures and International Conference at Woods Hole, MA, USA. Participant.

3.19--3.23.2018, Cluster Algebras: Twenty Years On at CIRM - Luminy, Marseille, France. Participant.

2.14.2018, University of Connecticut Math Club, Storrs, CT. Title: Conway-Coxeter Frieze Patterns.

1.10--1.13.2018, AMS Special Session on Dynamical Algebraic Combinatorics at Joint Mathematics Meetings 2018, San Diego, CA. See slides: Cluster algebras and binary words.

2017

11.15.2017, Topology et al. Seminar, Wesleyan University, Middletown, CT. Download slides

10.20.2017, Cluster Algebras Seminar, University of Connecticut, Storrs, CT.

FPSAC London. Presented posters.

LMS/CMI research school: "New trends in representation theory: the impact of cluster theory on representation theory" 19-23 June 2017 at the University of Leicester. Organized by Sibylle Schroll and Karin Baur. Participant.

5.6--5.7.2017, AMS Special Session on Cluster Algebras in Representation Theory and Combinatorics at AMS Spring Eastern Sectional Meeting, Hunter College, City University of New York, New York, NY. See slides.

1.18.2017, Laboratoire d’informatique de l’École polytechnique (LIX), Palaiseau, France. Title: Cluster algebraic interpretation of infinite friezes.

1.09--1.13.2017, Sage Days 82 : Women in Sage, Ris-Orangis (Paris area, RER D), France.

1.4--1.7.2017, AMS Special Session on Symmetries, Integrability, and Beyond at Joint Mathematics Meetings 2017, Hyatt Regency Atlanta and Marriott Atlanta Marquis, Atlanta, GA.

2016 and earlier

6.29--7.1.2016, Sage Days 78 at University of British Columbia, Vancouver, BC, Canada. Coding tutorial presenter: Creating a SageMath (Python) class for a Combinatorial Object, see Follow along worksheets.

9.28.2016, Algebra and Combinatorics Seminar at Loyola University, Chicago, IL.

4.16--4.17.2016, AMS Special Session on Algebraic and Geometric Combinatorics at Spring Central Sectional Meeting, North Dakota State University, Fargo, ND.

1.6--1.9.2016, AMS-AWM Special Session on Commutative Algebra and Its Interactions with Algebraic Geometry at Joint Mathematics Meetings 2016, Washington State Convention Center, Seattle, WA.

12.2.2015, Speaker: Cluster Algebras from Surface Triangulations, Algebra and Combinatorics Seminar at Central Michigan University, Mount Pleasant, MI.

10.16.2015, Cluster Algebras Seminar, University of Connecticut, Storrs.

10.13.2015, Algebra and Discrete Mathematics Seminar at North Dakota State University, Fargo, ND. See talk notes (plain txt file with ascii art).

9.19.2015, Speaker: Recurrences Arising from the Pentagon and Annulus, Women in Mathematics in New England at Smith College, Northampton, MA.

5.23--5.27.2015, Dynamical algebraic combinatorics at the American Institute of Mathematics (AIM). Participant.

1.12.2015, AMS Session on Combinatorics at Joint Mathematics Meetings 2015, Henry B. Gonzalez Convention Center, San Antonio, TX.

Expository talks at University of Minnesota:

• October 2013, Almost Positive Roots, Denominator Vectors, and Positions in a Word.
• February 2013, Potentials and Their Jacobian Ideals.
• September 2012, From Dominoes to Hexagons and Cluster Algebras.
• April 2012, Products of Involutions.
• December 2011, Abelian Sandpile Model on Directed Graphs.
• April 2011, Periodic Quivers and Associated Laurent Sequences.