José Alejandro Samper

Fuqua Research Assistant Professor
Department of Mathematics
University of Miami
Coral Gables, FL

Email: samper[at]math[dot]miami[dot]edu
Office: Ungar 421

About me

I am a Fuqua Research Assistant Professor at the University of Miami. During the fall of 2016 I was a postdoctoral fellow in the Topology in Motion semester program at ICERM . Before that, I was a PhD student at the University of Washington under the supervision of Isabella Novik .


I study simplicial complexes, matroids, posets, polytopes and related combinatorial structures.


  1. Lexicographic shellability, matroids and pure order ideals, (With Steven Klee) Advances in Applied Mathematics, 67 (2015), 1-19. (Relevant Code)
  2. The topology of the external activity complex of a matroid, (With Federico Ardila and Federico Castillo) Electronic Journal of Combinatorics, 23 (2016), #P3.8.
  3. Higher Chordality: From graphs to complexes,(With Karim Adiprasito and Eran Nevo) Proceedings of the AMS, 144(2016), no. 8, 3317-3329.
  4. A geometric lower bound theorem, (With Karim Adiprasito and Eran Nevo) Geometric and Functional Analysis, 26(2016), no. 2, 359-378.
  5. Quasi-matroidal classes of ordered simplicial complexes, submitted

Extended abstracts

  1. The lower bound theorem for polytopes that approximate C^1-convex bodies. (With Karim Adiprasito)DMCTS Proceedings of FPSAC 14 (2014)
  2. Matroids vs. Shifted Complexes. (With Steven Klee) Oberwolfach reports, in press(2015)
  3. The topology of the external activity complex of a matroid. (With Federico Ardila and Federico Castillo)DMCTS Proceedings of FPSAC 16 (2016)
  4. Relaxations of the matroid Axioms: Independence, Exchange and circuits DMCTS Proceedings of FPSAC 16 (2016)

Slides, posters and some expository writing


CV, updated in May 2017