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Gábor Hetyei
Professor

Office: Fretwell 335F
Phone: 704-687-1045
Fax: 704-687-1392
E-mail: ghetyei "at" uncc.edu
Postal address: Department of Mathematics & Statistics,
UNC-Charlotte, Charlotte NC 28223-0001
Information for my students
Office hours (Spring 2021): TR 2:30-3:30 pm or by appointment. Office hours will be held over Zoom. Zoom links are provided for my current students on Canvas, email for the password otherwise.
Day of the week: MondayTuesdayWednesdayThursday
Time: 2:30-3:30 pm 2:30-3:30 pm
Zoom ID: 98271796110 92469690706
Classes taught (Spring 2021):
Modern Algebra, MATH 3163, Section 001, Tuesdays and Thursdays 1:00 - 2:15 pm in Fretwell 100. Here is some public information regarding the class.
Combinatorics, MATH 3166-003, Tuesdays and Thursdays 4:00 - 5:15 pm in Fretwell 100. Here is some public information regarding the class.


Pages for my past UNCC classes are available at my Class Homepage Archive.
Special announcements and downloads
For one-time events, special downloads, including MATH 1100 information, visit my Special Announcements and Downloads page.
Information for my colleagues
I have a separate Professional Information page, containing (among others) links to: my vita, my papers since 2012, and homepages of classes I taught.

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. The type B permutohedron and the poset of intervals as a Tchebyshev transform: the latest version is on the ArXiv.
  2. 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 will appear in the SIAM Journal on Discrete Mathematics.
  3. A Bijective Answer to a Question of Simion (with Richard Ehrenborg and Margaret Readdy): the final version is Article 19.1.2 in the in Journal of Integer Sequences (11 pages).
  4. 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.
  5. 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 will appear in Acta Mathematica Hungarica.
  6. 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).
  7. Alternation acyclic tournaments: local original, the most recent version is on the ArXiv, the final version is in European Journal of Combinatorics 81 2019 (2019), 1-21.
  8. 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.
  9. 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.
  10. 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.
  11. 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.
  12. 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.
  13. 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.
  14. 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.
  15. 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.
  16. 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.
  17. 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.
  18. 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.
  19. 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.
  20. 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.
  21. 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.
  22. 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.
  23. 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.)
  24. 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: Wednesday, January 20, 2021