Professional Experience 

1991-1994: Adiestrada (Trainee), Department of Artificial Intelligence and Pattern Recognition, Institute of Cybernetics, Mathematics and Physics, Academy of Sciences of Cuba.

1994-1995: Aspirante a Investigador (Research Resident), Department of Artificial Intelligence and Pattern Recognition, Institute of Cybernetics, Mathematics and Physics, Academy of Sciences of Cuba.

1995-2000: Graduate Teaching Assistant, Department of Mathematics, University of Oklahoma.

Fall '95, Spring '96, Spring '98: Research Assistant, Department of Mathematics, University of Oklahoma.

2000-2001: Postdoctoral Fellow, Mathematical Sciences Research Institute, Berkeley, California.

2001-2008: Assistant Professor, Department of Mathematics, Texas Tech University.

2008-: Associate Pofessor, Department of Mathematics, Texas Tech University.

  Visiting Appointments  

July-December 2009: Visiting Scholar, Math. Department, Penn University.

May-June 2007: Visiting Pofessor, IRMAR, Rennes, France.

March 2008: Member, MSRI, Berkeley, California.