• September 2011. Mathematics Colloquium, Universidad de Antioquia.
  Conjuntos independientes: Un problema 'duro' de conteo y muestreo..
  

• April 2011. Mathematics Colloquium, Saint Louis University.
  New bounds on the hard-core model in Z^2..
  

• April 2011. Probability seminar, University of Rochester.
  New bounds on the hard-core model in Z^2..
  

• March 2011. ARC Thinktank 3rd anniversary, Georgia Tech.
  Spatial Mixing: Refinements and Applications..
  

• March 2011. Frontier Probability days, University of Utah.
  Phase transition and reconstruction for the Glauber dynamics on trees..
  

• October 2010. SIAM student seminar. Georgia Institute of Technology.
  When do random CSPs become hard?.
  

• October 2010. Probability working seminar. Georgia Institute of Technology.
  Self-avoiding walks and sampling in statistical physics models.
  

• May 2010. 4th Annual Graduate Student Probability Conference. Duke University.
  Glauber dynamics for the hard-core model on planar trees. .
  

• April 2010. Seminar of the Mathematics Department, Universita Roma Tre.
  Glauber dynamics for the hard-core model on planar trees. .
  

• March 2010. ARC Thinktank 3rd anniversary, Georgia Tech.
  Mixing in Catalan Structures. .
  

• November 2009. Microsoft Research, New England.
  Reconstruction and clustering for a class of constraint satisfaction problems.
  Abstract. Presentation.

• October 2009. 29th Southeastern Atlantic Regional Conference on Differential Equations. Mercer University.
  Reflection principles supported on a finite set.
  Presentation.

• June 2009. DIMACS workshop, Georgia Institute of Technology.
  Proof of Aldous conjecture for multipartite graphs.
  

• May 2009.3rd Annual Graduate Student Conference in Probability. University of North Carolina.
  Linear dependence of binary random vectors of fixed weight.
  

• April 2009. 33rd SIAM Southeastern-Atlantic Section Conference. University of South Carolina.
  Reconstruction and Clustering in Random CSP's.
  Presentation.

• March 2009. Probability working seminar. Georgia Institute of Technology.
  Coupling and the Kac's random walk.
  

• October 2008. Colloquium of the Mathematics Department. Universidad Nacional de Colombia.
  Principios de reflexión con soporte en un conjunto finito.
  Presentation.

• April 2007. Graduate Research Symposium. University of South Florida.
  The reflection principle.
  Abstract.

• July 2005. Regional school of Mathematics. Universidad del Valle..
  Stochastic modelling of the loss of telomere sequences, case of several chromosomes.
  

• June 2005. Seminar of differential equations and its applications. Universidad de Antioquia.
  Markovian model of the growth of a population which develops by a Malthusian dynamics.
  

• May 2005. Seminar of the Mathematics Department. Universidad de Antioquia.
  Modelling the spread of an epidemic through a network.
  

• April 2005. Modelling week. Technische Universiteit Eindhoven.
  Parameter optimization in text characterization.
  

• January 2005. XIV simposio colombiano de estadística.
  Modelling of the loss of telomere sequences by the method of product densities.
  

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