photo
Gábor Hetyei
Professor

Department of Mathematics & Statistics,
UNC Charlotte,
9201 University City Blvd.
Charlotte, NC 28223-0001

Office: Fretwell 335F   E-mail: ghetyei "at" uncc.edu
Information for my students
Office hours (Spring 2023): Mondays and Fridays 10:00-11:00 am and Wednesdays 4:45-5:15 pm or by appointment. (Click on the hour times for the zoom link, send me an email, if you don't know the password.)
Classes taught (Spring 2023):
Combinatorics, MATH 3166, Section 001, Mondays, Wednesdays and Fridays 11:15 am - 12:05 pm in Denny 203.
Real Analysis for Secondary Mathematics Teachers, MATH 6102/EDCI 8102, Section 001, Wednesdays 5:30 - 8:15 pm in Fretwell 210.

Pages for my past UNCC classes are available at my Class Homepage Archive.
Information for my colleagues
I have a separate Professional Information page, containing (among others) links to: my vita, my papers published since 2011, and homepages of classes I taught. Currently I am also maintaining a web page for our Algebra, Combinatorics and Number Theory Seminar.

The original version of most of my papers since 2002 may found in our departmental Preprint Archive. I also post dynamically updated versions of my papers on the ArXiv, whenever my coauthors allow it. On my professional information page I have links to preprint and published versions of my papers since 2012. Please email me for an author's copy, if you have no access to the journal. For links to all my published papers, try the Publications section of my vita.
  1. Spanning hypertrees, vertex tours and meanders (with Robert Cori): local original, the most recent version is on the ArXiv.
  2. The type B permutohedron and the poset of intervals as a Tchebyshev transform: a recent version is on the ArXiv, the final version (SharedIT link) is available online in Discrete & Computational Geometry at DOI 10.1007/s00454-023-00490-4.
  3. Invariants of rational links represented by reduced alternating diagrams (with Yuanan Diao and Claus Ernst): local original, the most recent version is on the ArXiv, the final version is in SIAM Journal on Discrete Mathematics 34 (2020), 1944-1968.
  4. A Bijective Answer to a Question of Simion (with Richard Ehrenborg and Margaret Readdy): the final version is Article 19.1.2 in the Journal of Integer Sequences (11 pages).
  5. A Diagrammatic Approach for Determining the Braid Index of Alternating Links (with Yuanan Diao, Claus Ernst and Pengyu Liu): the most recent version is on the ArXiv, the final version is Journal of Knot Theory and Its Ramifications 30 (2021), 2150035.
  6. Classification of uniform flag triangulations of the boundary of the full root polytope of type A (with Richard Ehrenborg and Margaret Readdy): local original, the most recent version is on the ArXiv, the final version is in Acta Mathematica Hungarica, 163 (2021), 462-511.
  7. Counting partitions of a fixed genus: local original, the most recent version is on the ArXiv, the final version is in The Electronic Journal of Combinatorics, 25 (2018), P4.26 (with Robert Cori).
  8. Alternation acyclic tournaments: local original, the most recent version is on the ArXiv, the final version is in European Journal of Combinatorics 81 (2019), 1-21.
  9. The Braid Index of Reduced Alternating Links (with Yuanan Diao and Pengyu Liu): local original, a more recent version is on the ArXiv, the final version will appear in Mathematical Proceedings of the Cambridge Philosophical Society.
  10. The HOMFLY Polynomial of Links in Closed Braid Form (with Yuanan Diao and Pengyu Liu): a recent version is on the ArXiv, the final version is in Discrete Mathematics 342 (2019), 190-200.
  11. Simion's type B associahedron is a pulling triangulation of the Legendre polytope (with Richard Ehrenborg and Margaret Readdy): local original, a more recent version is on the ArXiv, the final version is in Discrete & Computational Geometry 60 (2018) 98-114.
  12. Efron's coins and the Linial arrangement: local original, a more recent version is on the ArXiv, the final version is in Discrete Mathematics 339 (2016), 2998-3004.
  13. Generalized Tchebyshev triangulations (with Eran Nevo): local original, the most recent version is on the ArXiv, the final version is in the Journal of Combinatorial Theory A 137 (2016) 88-125.
  14. Counting genus one partitions and permutations (with Robert Cori): local original, the most recent version is on the ArXiv, the final version is in Séminaire Lotharingien de Combinatoire, B70e (2014), 28 pp.
  15. The toric h-vector of a cubical complex in terms of noncrossing partition statistics (with Sarah Birdsong): local original, a more recent version is on the ArXiv, the final version is in Annals of Combinatorics 18 (2014) 585-606.
  16. Hurwitzian continued fractions containing a repeated constant and an arithmetic progression: local original, a more recent version is on the ArXiv, the final version is in SIAM Journal on Discrete Mathematics, 28 (2014), 962-985.
  17. Relative Tutte polynomials of tensor products of colored graphs (with Yuanan Diao): local original, a more recent version is on the ArXiv, the final version is in Combinatorics, Probability & Computing, 22 (2013), 801-828.
  18. A Gray Code for the Shelling Types of the Boundary of a Hypercube (with Sarah Birdsong): local original, a more recent version is on the ArXiv, the final version is in Discrete Mathematics, 313 (2013), 258-268.
  19. Level Eulerian posets (with Richard Ehrenborg and Margaret Readdy): local original, a recent version is on the ArXiv, the final version is in Graphs and Combinatorics 29 (2013) 857-882.
  20. The short toric polynomial: local original, an updated version is on the ArXiv, the final version is in Transactions of the American Mathematical Society 365 (2013), 1441-1468.
  21. The poset of bipartitions (with Christian Krattenthaler): local original, an updated version is on the ArXiv, the final version is in European Journal of Combinatorics 32 (2011), 1253-1281.
  22. Enumeration by kernel positions for strongly Bernoulli type truncation games on words: local original, a revised version is on the ArXiv, the final version is in the Journal of Combinatorial Theory A 117 (2010), 1107-1126.
  23. Meixner polynomials of the second kind and quantum algebras representing su(1,1): local original, a revised version is on the ArXiv, the final version is in the Proceedings of the Royal Society A 466 (2010), 1409-1428.
  24. A Tutte-style proof of Brylawski's tensor product formula (with Yuanan Diao and Kenneth Hinson): local original, the final version is in European Journal of Combinatorics 32 (2011), 775-781. (This is the special issue of honoring Thomas Brylawski.)
  25. A second look at the toric h-polynomial of a cubical complex: local original, a revised version is on the ArXiv, the final version is in Annals of Combinatorics 16 (2012), 517-541.

Copyright © 2000-      Gábor Hetyei. Last update: Monday, February 27, 2023