International Conference on
Enumerative Combinatorics and Applications
Virtual
ICECA 2025 (August 25-27, 2025)


Previous Conferences: ICECA2022, ICECA2023, ICECA2024.

About

Enumerative combinatorics is a dynamic subfield of the mathematical sciences with many challenging research problems, ingenious and sophisticated techniques, and important applications in various scientific fields. Questions from a broad range of areas, including algebra, topology, probability, computer science, physical, chemical and biological sciences, have some surprising hidden combinatorial structures that require enumerative methods for their solution. The aims of this conference are
  •  to highlight the recent significant theoretical advances in enumerative and analytic combinatorics;
  •  to showcase the important new applications of enumerative combinatorics to problems arising in other scientific disciplines;
  •  to discuss new questions, ideas, and methods of an enumerative nature from various scientific fields;
  •  to bring together researchers of various backgrounds and experience from several fields whose research utilizes or touches upon enumerative techniques.

Organizers

Chair: Toufik Mansour University of Haifa
Co-chairs: Ron Adin Bar-Ilan University, Mark Dukes University College Dublin, Ilias Kotsireas Wilfrid Laurier University, Yuval Roichman Bar-Ilan University, Armend Sh. Shabani University of Prishtina, Alek Vainshtein University of Haifa.

Program

First Day, August 25, 2025, 16:00-21:00 Israel time (IDT zone time)

      Log in time(15:00-15:50)
      Opening (15:50-16:00)
      Richard Stanley Massachusetts Institute of Technology, Interview with Richard P. Stanley
           Title: Symmetric functions arising from a theta function of Ramanujan, Abstract (16:00-16:50)
      Mei Yin University of Denver
           Title: fixed points and cycles of parking functions, Abstract (16:55-17:10)
      Doron Zeilberger Rutgers University, Interview with Doron Zeilberger
           Title: Why does counting counts? Abstract (17:15-18:05)
      David Bevan University of Strathclydes
           Title: Irrational enumeration: analytic combinatorics for objects of irrational size, Abstract (18:10-18:25)
      Maria Chudnovsky Princeton University, Interview with Maria Chudnovsky
           Title: How to bound treewidth: structure and algorithms, Abstract (18:30-19:20)
      Michael Wallner TU Graz
           Title: Combinatorics of nondeterministic walks, Abstract (19:25-19:40)
      Closing first day (19:40-19:50)

Second Day, August 26, 2025, 16:00-21:00 Israel time (IDT zone time)
      Log in time(15:00-15:50)
      Opening (15:55-16:00)
      Brendan McKay Australian National University, Interview with Brendan McKay
           Title: Spanning trees and Eulerian orientations, Abstract (16:00-16:50)
      Olya Mandelshtam University of Waterloo
           Title: A probabilistic bijection for non-attacking fillings, Abstract (16:55-17:10)
       Sheila Sundaram University of Minnesota, Interview with Sheila Sundaram
           Title: Some properties of a variant of Lien, Abstract (17:15-18:05)
      Leonardo Saud Maia Leite KTH Royal Institute of Technology
           Title: Order polytopes of crown posets, Abstract (18:10-18:25)
      Gyula O.H. Katona Hungarian Academy of Sciences, Interview with Gyula O.H. Katona
           Title: Sharpenings of the Erd\H os-Ko-Rado theorem, Abstract (18:30-19:20)
      Gábor Hetyei UNC Charlotte
           Title: Labeling regions in deformations of graphical arrangements, Abstract (19:25-19:40)
      Ron Aharoni Technion
           Title: Intersections of matroids, Abstract (19:45-20:35)
      Igal Sason Technion
           Title: Schrijver's ϑ-function need not upper bound the Shannon capacity of a graph, Abstract (20:40-20:55)
      Closing second day (20:55-21:00)

Third Day, August 27, 2025, 16:00-21:00 Israel time (IDT zone time)
      Log in time(15:00-15:55)
      Opening (15:55-16:00)
      Sylvie Corteel University of California Berkeley
           Title: Crystal skeletons: Combinatorics and axioms, Abstract (16:00-16:50)
      Chao Xu Université Lyon 1
           Title: A multivariable generalization of Stirling-Eulerian polynomials, Abstract (16:55-17:10)
      Francesco Brenti University of Rome “Tor Vergata”, Interview with Francesco Brenti
           Title: Combinatorics of Cuntz algebras, Abstract (17:15-18:05)
      Shaul Zemel Hebrew University
           Title: Generalized Higher Specht Polynomials and their Stabilizations, Abstract (18:10-18:25)
      Vít Jelínek Charles University
           Title: How fast can permutation classes sort? Abstract (18:30-19:20)
      David Fischer Princeton University
           Title: treewidth and outerstring graphs, Abstract , (19:25-19:40)
      Closing third day (19:40-20:00)

Poster videos

Among all the submission the Scientific Committee selected 10 poster videos. Videos will be published in the Conference channel in You-Tube:
Mohseb Aliabadi, Classifying abelian groups through acyclic matchings
Feng Zhao, Some recently results on Ballot permutations and words
Shi-Mei Ma, On the joint distribution of excedances, fixed points and cycles
Samrith Ram, Subspace profiles, q-Whittaker functions and Krylov subspace methods
Durand Francis, A random sampler for rook placements in Ferrers board
krishna Menon, Topology of permutation patterns
David Ash, An explicit power series result for the two type ASEP
Eli Berger and He Guo, The meshulam game for hypergraphs and coloring the intersection of two matroids
Hiranya Kishore Dey and Sivaramakrishnan Sivasubramanian, Enumerating alternating-runs with sign in type A and type B Coxeter groups
Daniel Checa, Arndt Compositions: connections with Fibonacci numbers, statistics, and generalizations

Registration

To register for the conference, please the conference's organizing committee chair, Toufik Mansour, at eca.math.journal@outlook.com with the following :
  1. The subject line "ICECA-2025";
  2. Please include your name and surname, affiliation, and email address in the following format: Name, surname, affiliation, email
  3. If you want to present a contributed talk/contributed poster video at the conference, then in a new line, state this and attach an extended abstract of 4-5 pages (include the bibliography) on 12 size font. All submissions will receive full consideration. We encourage submissions from Ph.D. students and early career researchers. The conference will have space for 12 contributed talks and 12 contributed poster videos (each 15 minutes in length).

Registration will close at the end of June.

We will decide on the selection of contributed talks on middle of June (Submission Deadline: May 30, 2025). The deadline is over

There is no registration fee for the conference participants. Approximately one week before the conference, registered participants will receive an email with instructions on attending the virtual conference. Note that the official language of the conference is English.

Note: Please be aware that the conference is virtual, so be wary of any scam e-mails requesting assistance with travel and lodging concerns linked to the conference.

List of Registrations (in alphabetical order)