Cesar Ceballos

  • Since September 1, 2015, I am a postdoctoral fellow in the Faculty of Mathematics at the University of Vienna. I am working in the combinatorics group of Christian Krattenthaler. This web page will be updated soon.

  • I am a Banting Postdoctoral Fellow in the Department of Mathematics and Statistics at York University, and a visitor member of the Fields Institute. I am working in the Algebraic Combinatorics group of Nantel Bergeron.
  • Before coming here, I was a PhD student in the Discrete Geometry Group at the Freie Universität Berlin
    under the supervision of Günter M. Ziegler. I was also a member of the DFG research training group Methods for Discrete Structures and a member and former student representative of the Berlin Mathematical School.

  • address:
    Department of Mathematics and Statistics
    York University
    4700 Keele St, Toronto, ON M3J 1P3, Canada

    Office: 2026 TEL Building
    Tel.: (+1) 416-736-2100 ext 33545
    Email: ceballos@mathstat.yorku.ca

    York University Banting Fields Institute







    Research interests

    Publications and preprints

    1. Cluster algebras of type D4, tropical planes, and the positive tropical Grassmannian. arXiv:1511.02699
      with Sarah Brodsky and Jean-Philippe Labbé.

    2. A Hopf algebra of subword complexes. arXiv:1508.01465
      with Nantel Bergeron.

    3. Combinatorics of the zeta map on rational Dyck paths. arXiv:1504.06383, slides
      with Tom Denton and Christopher Hanusa.

    4. Cluster algebras of type D: pseudotriangulations approach. arXiv:1504.06377
      with Vincent Pilaud.

    5. Fan realizations of subword complexes and multi-associahedra via Gale duality. link, arXiv:1404.7380
      with Nantel Bergeron and Jean-Philippe Labbé.
      Discrete and Computational Geometry, accepted.

    6. The diameter of type D associahedra and the non-leaving-face property. arXiv:1406.0368
      with Vincent Pilaud.
      European Journal of Combinatorics, accepted.

    7. Dyck path triangulations and extendability. link, arXiv:1402.5111
      with Arnau Padrol and Camilo Sarmiento.
      Journal of Combinatorial Theory, Series A 131, (2015) 187-208.

    8. Denominator vectors and compatibility degrees in cluster algebras of finite type. link, arXiv:1302.1052
      with Vincent Pilaud.
      Trans. Amer. Math. Soc. 367, (2015), 1421-1439.
      Extended Abstract (12 pages) in Discrete Math. Theor. Comput. Sci. Proc. FPSAC 2013

    9. Acyclic systems of permutations and fine mixed subdivisions of simplices. link, arXiv:1111.2966
      with Federico Ardila.
      Discrete and Computational Geometry 49 (3), 2013, 485-510.

    10. Realizing the associahedron: Mysteries and questions. link, arXiv:1110.4059
      with Günter M. Ziegler.
      Associahedra, Tamari Lattices and Related Structures, Tamari Memorial Festschrift, eds. F. Müller-Hoissen, J. Pallo and J. Stasheff,
      Progress in Mathematics 299 (Birkhäuser, 2012).

    11. Many non-equivalent realizations of the associahedron. link, arXiv:1109.5544
      with Francisco Santos and Günter M. Ziegler.
      Combinatorica, 2014. Online first publication 29. Sept. 2014, DOI: 10.1007/s00493-014-2959-9.

    12. Subword complexes, cluster complexes, and generalized multi-associahedra. link, arXiv:1108.1776
      with Jean-Philippe Labbé and Christian Stump.
      Journal of Algebraic Combinatorics 39 (1), 2014, 17-51.
      Extended Abstract (12 pages) in Discrete Math. Theor. Comput. Sci. Proc. FPSAC 2012



    Past seminars



    Some Recent Talks