View source for Talks in Conferences and Workshops

1.	“Monte Carlo Estimation of the Elongation of Two-Dimensional Poisson-Voronoi Cells”. Spatial Statistics Conference, Sitges, 10-13 July 2019. 

2.	“The Probabilistic/Algebraic Approach to Network Reliability”. CONNECT – Combinatorics of Networks and Computations Day, Barcelona, June 14, 2019. 

3.	“Weak Roman Domination in Lexicographic Product Graphs”. Encuentro Andaluz de Matemática Discreta, Línea de la Concepción, Cádiz, July 7-10, 2017.
 
4.	“Topological Vulnerabilities of Networks”. CIMPA Research School on Mathematical Models for Security Applications, Havana, Aug. 29 – Sep. 9, 2016. 

5.	“Constructing Graphs by Voltage Assignment”. GAP Days 2014, Aachen, Germany, August 2014. 

6.	“Searching for Large Multi-Loop Networks”. X GraphMasters Workshop, Lleida, Spain, July 2014. 

7.	“Searching for Large Multi-Loop Networks”. IX Spanish Meeting on Discrete Mathematics and Algorithmics (JMDA), Tarragona, Spain, July 2014. 

8.	“Ranking Users in Professional Social Networks”. 2013 ICSO-HAROSA Int. Workshop on Simulation-Optimization for Logistics and Production, Barcelona, Spain, Nov. 2013. 

9.	“Fitting Voronoi Diagrams to Planar Tesselations”. Int. Workshop on Combinatorial Algorithms (IWOCA), Rouen, France, July 2013. 

10.	“Recent Advances in the Degree-Diameter Subgraph Problem in the Mesh”. GraphMasters 7, University of Lleida, Spain, June 2013. 

11.	“Endorsement Deduction and Ranking in Social Networks”. GraphMasters 7, University of Lleida, Spain, June 2013.

12.	“The Degree-Diameter Subgraph Problem”. Mathematics Seminar, University of Lleida, Spain, April 2013. 

13.	“Green Computing: Problems and Perspectives”. Invited talk. Open University of Catalonia, Spain. December 2012. 

14.	“The Degree-Diameter Subgraph Problem in the Mesh”. GraphMasters 2012, University of Lleida, Spain. September 2012.

15.	“The Degree-Diameter Problem in the Mesh, and Delannoy Numbers”. Prague Midsummer Combinatorial Workshop, July 2011. 

16.	“Good Network Partitioning for OSPF.  XX Symposium on Concurrency and Distributed Systems, Pamplona, Spain, July 2012. 

17.	“Properties of metabelian groups for algebraic construction of graphs”. Workshop on Graph Theory and Applications, The University of Newcastle, November 2010. 

18.	“Heuristic for magic and antimagic graph labelling”. Spanish Congress of Informatics (CEDI), Valencia, September 2010. 

19.	“Some problems related to algebraic construction of large graphs”. Prague Midsummer Combinatorial Workshop, July 2010. 

20.	“Some properties of groups for algebraic constructions”. 8th French Combinatorial Conference, Université de Paris Sud, Orsay, June 2010. 

21.	“On cubic graphs of even girth and small excess”. 8th French Combinatorial Conference, Université de Paris Sud, Orsay, June 2010. 

22.	“Image models based on Voronoi diagrams (in Spanish). University Jaume I, Castellón, Spain, Jan. 2010. 

23.	“Group-theoretic Protocols for Information Security”. University of Ballarat, Australia, July 22-23, 2009. 

24.	“Computer-Based Methods for Constructing Large Networks with Given Degree and Diameter”. Graph Theory Seminar of the University of Newcastle, Australia. May 2009. 

25.	“Construction of Large Graphs of Certain Classes”. Mathematics Seminar of the University of Lleida,  Spain. Jan. 2009.

26.	“Construction of Large Graphs of Certain Classes”. Graph Theory Seminar of the Polytechnic University of Catalonia, Barcelona, Spain. Nov. 2008.

27.	“Elimination in String Rewriting Systems”. VI Jornadas de Matemática Discreta y Algorítmica, Lleida, Spain, July 21-23, 2008. 

28.	“Image Compression with Voronoi Diagrams”. Workshop on Signal and Image Processing and Related Topics, Nyíregyháza College, Hungary, May 2008.

29.	“Complete Presentations of Monoids and Some Applications”. Seminar of the Research Group on Computational Linguistics, University Rovira i Virgili, Tarragona, España, Junio 2006.

30.	“Active Contours”. Seminar of the Visual Engineering Research Group, University Jaume I, Castellón, Spain, June 2006. 

31.	“The Inverse Voronoi Problem and its Applications to Image Comopression”. II International Workshop of Computational Geometry and its Applications. El Rocío, Huelva, Spain, May 2006. 

32.	“Different Approaches to Voronoi Image Compression”. 3rd Cuban Workshop on Algorithms and Data Structures, Havana, Cuba, April 2004. 

33.	““Some Open Problems of Computational Group Theory”. Congress of the Cuban Society for Mathematics and Computing (COMPUMAT 2003), Sancti Spiritus, Nov. 2003. 

34.	“The Study of Symmetry as a Way to Teach Group Theory”. Congress of the  Cuban Society for Mathematics and Computing (COMPUMAT 2003), Sancti Spiritus, Nov. 2003. 

35.	“Voronoi Image Processing”. VI International Conference of Operations Research, Havana, Sept. 2003. 

36.	“Elimination Theory in String Rewriting Systems”. VI International Conference of Operations Research, Havana, Sept. 2003.

37.	“Computation of the Cardinal of the Regular Language Accepted by an Acyclic Finite Automaton”. International  Conference MATINFO 2003, Holguín, Cuba, April 2003. 

38.	“Complete Presentation of Finite Coxeter Groups”. International  Congress CIMAF 2003, Havana, Marzo 2003. 

39.	“Estimating the Order of Groups”. V International Conference of Operations Research. Havana, March 2002.

40.	“Characterizing Normal Forms in Finitely Presented Monoids”. International Congress  CIMAF 2001, Havana, March 2001. 

41.	“Complete Presentations of the Coxeter Groups Dn”. Congress of the Cuban Society for Mathematics and Computing (COMPUMAT 2000), Manzanillo, Cuba, Nov. 2000. 

42.	“Enumerating Words in Finitely Presented Monoids”. IV International Conference of Operations Research. University of Havana, March 2000. 

43.	“Graph Theory in the Teaching of Mathematics” (invited series of lectures). International Symposium on the Teaching of Mathematics. National University of Chimborazo, Riobamba, Ecuador. May 1998.

44.	“Discrete Mathematics and Informatics” (invited lecture). IV International Seminar of Mathematics. Escuela Superior Politécnica de Chimborazo, Riobamba, Ecuador. March 1998.

45.	“Dynamic Systems for Self-Training in DOS and Windows. Their Application in Cellular and Molecular Biology”. Pedagogía-97, Havana, 1997.

46.	“G-presentations of Coxeter Groups with  Three  Generators”. First International Conference of Mathematics and Informatics (Santiago de Cuba, Nov. 1996).

47.	“Dynamic Systems for Self-Training and Self-Assessment in Cellular and Molecular Biology”. Pedagogía-95, Havana, 1995.

48.	“Dynamic Systems for Self-Training and Self-Assessment in Cellular and Molecular Biology”. II International Workshop about Higher Education and its Perspectives. University of Havana, Jan. 1994.

49.	“About Partitions of the Complete Bipartite Multigraph”. II International Symposium on the Development of Mathematics. Cuban Academy of Sciences, Havana, Sept. 1992.