H O M E · P A G E

F R A N C E S C · C O M E L L A S
Departament de Matemàtiques
Universitat Politècnica de Catalunya
Barcelona, Catalonia, Spain

Address: Escola d'Enginyeria de Telecomunicació i Aeroespacial de Castelldefels
Address: c/ Esteve Terradas 5
Address: 08860 Castelldefels (Barcelona), Catalonia, Spain

E-mail: (remove blanks to use) francesc . comellas @ upc . edu
Phone: +34.93.413.4109
Fax: +34.93.413.7007


Professor of Applied Mathematics, Universitat Politècnica de Catalunya.

R E S E A R C H · I N T E R E S T S


My current research is with the Graphs and Combinatorics Group in the application of Graph Theory to the design of topologies and communication strategies for interconnection networks and include:

  • Design and analysis of deterministic models for complex networks.
  • Study of graph invariants and parameters associated to complex networks in the context of biomedicine and social sciences.
    As an example, the network associated to the Erdös number (since 1995, mine is 2).
  • Communication problems in networks: broadcasting and gossiping.
  • The use of combinatorial optimization algorithms for problems like the design of certain classes of (complex) networks or communication strategies, planarization, the design of codes, coloring of graphs or frequency assignment:
    • Simulated annealing, tabu search
    • Genetic algorithms, genetic programming
    • Multi-agent algorithms (ants), immune system based algorithms.
    • The design of large networks, particularly the degree-diameter problem for vertex-symmetric networks.
See my ON-LINE PAPERS for more details.
Related to this research, I have supervised several PhD Thesis and PFC (Projecte Final de Carrera, roughly equivalent to a Master Thesis). See my mathematical genealogical tree here.
h-index: 24 ( Google Scholar), 16 ( Thomson Reuters).

Generated by Wordle from the list of titles of my papers.

A theorem a day
Means promotion and pay!
A theorem a year
And you're out on your ear!

Paul Erdös (1913-1996) º€ø,žž,ø€º°`°º€ø,žž,ø€º

Les comunicacions són el triomf de les matemàtiques
Telecommunications are the triumph of mathematics.

Sergi Verdú (Barcelona 1958) closing statement (41 m 20 s) in "Singulars", TV3, December 15, 2009.
Darwin's tree of life (1837). A connection between graph theory and evolutionary algorithms ?


I change couses quite often, and I like to develop applied/algorithmic stuff for these courses.
2010/2011. Fall term (Schedule):
Simulació 3rd year, Aeronautics, EPS Castelldefels (click here for its location)
Linear Algebra and Applications EPS Castelldefels
Former recent teaching:
Algorismes Evolutius i Aplicacions (code: 50532),ETSET Barcelona
Probabilitat i Estadística EPS Castelldefels Fonaments Matemàtics I Fonaments Matemàtics II; EPSC. Matemàtiques de la Telecomunicació (code: 11479), ETSETB


Vice-Dean and Head of Studies, Technical School of Telecom (Escola Universitària del Baix Llobregat), 1996-1998.
Vice-Dean, School of Telecommunications (Escola Tècnica Superior d'Enginyeria de Telecomunicació de Barcelona) 1992-1994.

Visiting scientist, School of Computing Science, Simon Fraser University, Burnaby, Canada (1995/1996).
Visiting scientist (MEC/British Council Fleming Award), Informatics Department, Rutherford-Appleton Laboratory, Didcot, England (1988/1989).

Associate Editor, Networks (Wiley InterScience) and Journal of Complex Networks (Oxford University Press)
Referee for the CICYT (Comisión Interministerial de Ciencia y Tecnologia)
Referee for Discrete Mathematics, Discrete Applied Mathematics, Information Processing Letters, Networks, Journal of Parallel and Distributed Computing, ....
Spanish coordinator for the Erasmus program. Projects: ICP-94-F-4015/06, ICP-94-I-1030/06, ICP-94-UK-1106/06, etc..

M Y · L I N K S

On line papers
Latin grammar in Catalan , a 1932 book from my grandfather, Blai Padró. ( another bio )
Java applet on the Ising model
Java applet that perfoms symbolic regression using Genetic Programming (local) . (original)
See my paper Genetic Programming to Design Communication Algorithms for Parallel Architectures.
Conway's life in Java
This page was created in June 10, 1994. In 1996, a project to keep "snapshots" of the WWW was started at web.archive.org , with computers at the new Alexandria Library and somewhere in California. Go to the past and connect to my homepage as it was on December 1, 1996.

We put the first geocache (geoamagatall) of the Iberian peninsula (February 18th, 2001). Listen to an interview (Radio Barcelona), March 2001, on this topic. Another short interview related with the 5th anniversary was broadcasted by Catalunya Informació (March 1, 2006). The newspaper AVUI wrote an article in August 11th, 2006. See also www.geocaching.com

F O R M E R · P O S I T I O N S

Before having my post at DMAT and from 1982 to 1985 I was with the Autonomous Government, Generalitat de Catalunya, Directorate of the Universities. From 1978 to 1982 I was a lecturer at the Universitat Autonoma de Barcelona where I did my Ph.D. on exact solutions to the Einstein's field equations (more on this): Solucions Estacionàries i Axisimètriques a les Equacions d'Einstein.

C O N T A C T · M E

" A nadie se le obligó nunca a hablar en castellano." Juan Carlos I de España, 23 de abril de 2001
"..que en todas las Escuelas de primeras letras, y de Gramática, no se permitan libros impresos en lengua catalana: escribir ni hablar en ella dentro de las Escuelas;..." A.H.N. Consejos. Gracia y justicia, (legajo 6811 A, núm 84 p.205)
Pondrá el corregidor el mayor cuidado en introducir la lengua castellana, a cuyo fin dará providencias más templadas y disimuladas para que se note el efecto sin que se note el cuidado." Felipe V.
"Por la presente ordeno y mando a mis Virreyes del Perú, Nueva Granada, Nuevo Reyno de Granada... para que de una vez se llegue a conseguir el que estingan los diferentes idiomas... y sólo se hable el castellano, como está mandado por repetidas Reales Cédulas y órdenes expedidas.." Cédula real de Carlos III de 10 de mayo de 1770
más | | YouTube video

This page is in English but my language is Catalan. Catalan -9 milion speakers- is having difficulties to be a normal language as is expressed in this auca de la normalització (click here for a gif image), written by my friend Joan Vilamala (Joan is John in Catalan -a masculine name-). An "auca" is an old traditional Catalan form of expression, halfway between a comic and a poem.
Vilamala is also the author of the lyrics and music of several songs that were (and some of them still are) quite popular in the 70's and 80's when the band "Esquirols" was singing them. Two of these are: Fent camí (mp3 8MB J.Vilamala), 11 de setembre (mp3 6.4 MB J.Vilamala/J. Crossas). Et cobriran de blasmes (mp3 6.4MB J.Estrada/R.Estrada).
This 1932 book, a Latin grammar, is written in Catalan. The author was my grandfather, Blai Padró. In fact this is the first Latin grammar in Catalan of modern times.

You are here (the red dot is Barcelona).

Locations of visitors to this page Cliqueu per a la previsio del temps a Barcelona Local time and temperature.

You are coming from .

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