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Lleida, Monday 5th - Friday 9th of September 2016

Organized by Isaac A. García, Jaume Giné, Maite Grau and Susanna Maza

This symposium is dedicated to Professor Javier Chavarriga, founder of the research group "Seminari de Sistemes Dinàmics de la Universitat de Lleida'' and who left us in November 2005.

Partially supported by Universitat de Lleida and by MINECO grant number MTM2014-53703-P.               

Aims of the symposium:

The symposium is the fourth edition of the "Symposium of Planar Vector Fields" which began at Lleida in November of 1996. The main interest of the Symposium is the qualitative theory of planar vector fields and related topics, as the bifurcation analysis, limit cycles, periodic limit sets, singularities, desingularization, algebraic invariant curves, integrability, center - focus problem, isochronous centers, period maps, finite cyclicity, foliations, etc. The aim of the symposium is two-fold: to survey recent progress made in this field and to explore new directions.

All the conferences will be of one hour and will be given in English.

Confirmed invited speakers:

Name University Country
M.J. Álvarez Universidad de las Islas Baleares Spain
J.L. Bravo Universidad de Extremadura Spain
A. Buica Babes-Boliay University Romania
M. Caubergh Universitat Autònoma de Barcelona Spain
C. Christopher Plymouth University United Kingdom
A. Cima Universitat Autònoma de Barcelona Spain
P. de Maesschalck Hasselt University Belgium
A. Gasull Universitat Autònoma de Barcelona Spain
J.T. Lázaro Universitat Politècnica de Catalunya Spain
V. Mañosa Universitat Politècnica de Catalunya Spain
C. Pantazi Universitat Politècnica de Catalunya Spain
D. Peralta-Salas Instituto de Ciencias Matemáticas ICMAT Spain
E. Ponce Universidad de Sevilla Spain
V. Romanovski University of Maribor Slovenia
D. S. Shafer University of North Carolina at Charlotte United States
J. Suárez Pérez del Río Universidad de Oviedo Spain
J. Torregrosa Universitat Autònoma de Barcelona Spain
J. Villadelprat Universitat Rovira i Virgili Spain
S. Walcher RWTH Aachen University Germany
X. Zhang Shangai Jiao-Tong  University China

People which have confirmed their participation: 

Participant University Country
M.R. Cándido Universitat Autònoma de Barcelona Spain
A. Carlucci Rezende Universitat Autònoma de Barcelona Spain
J.G. Espín Buendía Universidad de Murcia Spain
A. Ferragut Universitat Jaume I Spain
B. García Universidad de Oviedo Spain
J.D. García Saldaña Universidad Católica de la Santísima Concepción Chile
H. Giacomini Université de Tours France
L.F. Gouveia Universitat Autònoma de Barcelona Spain
K. Kenens Hasselt University Belgium
L. Mégret Université Pierre et Marie Curie France
L. Pereira Universitat Autònoma de Barcelona Spain
S. Rebollo Perdomo Universidad del Bío-Bío Chile
O. Saleta Reig Universitat Autònoma de Barcelona Spain
Y. Tang University of Maribor Slovenia
F. Torres Universidad de Sevilla Spain
Q. Wang Hezhou University China
A. Zegeling Utrecht University The Nederland

Number of participants:

There is a limited number of participants. Any person interested in participating can write an e-mail to symposium@matematica.udl.cat
The participation will be confirmed by the organization during the month of May 2016.


The talks of the symposium will take place at Room 1.04 of Escola Politècnica Superior, Universitat de Lleida, Avinguda Jaume II, 69 (in front of the river Segre), 25001 Lleida. Tel. 34 973 70 2779 - Fax. 34 973 70 2702.

Lunches and coffee breaks:

Lunches and coffe breaks will take place at "Cafeteria", floor -1 in the building next to the Escola Politècnica Superior, Avinguda Jaume II, 71 (in front of the river Segre).


Hotel AC (http://www.ac-hotels.com/143-AC_LLEIDA.html)

C\ Unió, 8 (in the other side of the river Segre and located at 300 meters from the Escola Politècnica Superior), 25002 Lleida.
Tel. 34 973 28 3910 - Fax. 34 973 28 3911.

Hotel AC Special offers to 4th Symposium on planar vector fields:

(please inform the hotel staff when you check in)

Single Occupancy: 63 euros (tax and breakfast are included).

Double Occupancy: 69 euros (tax and breakfast are included).


Map of the city of Lleida

How to arrive:

If you arrive at the airport of Barcelona, you can go to Terminal 2 and:
- pick up the train from the airport to Sants Station at Barcelona. There is a train every 30 minutes. In Sants Station you can take the train to Lleida.
- or pick up a direct bus from Barcelona airport to Lleida. There are few buses whose timetable can be checked at http://www.alsa.es/

In case you arrive at the airport of Barcelona, Terminal 1, you can take a free bus which gets to Terminal 2.

In the following link you can find a time table for the trains from Barcelona to Lleida and vice versa: 

In the following link you can find a time table for the buses from Barcelona (Estació del Nord) to Lleida and vice versa: http://www.alsa.es/

SYMPOSIUM PROGRAM   Conference Room: 1.04 EPS                                            







10:00 – 11:00


at 11:00h in “Cafeteria”

D. Peralta-Salas

V. Romanovski

C. Christopher

D.S. Shafer


11:45 – 12:45

A. Gasull

E. Ponce

J. Torregrosa

C. Pantazi

P. de Maesschalck


13:00 – 14:00

A. Buica

X. Zhang

S. Walcher

M.J. Álvarez



15:30 – 16:30

J. Villadelprat

Social activity

Poster session

V. Mañosa



16:45 – 17:45

A. Cima

Social activity

J. Suárez Pérez del Río

J.T. Lázaro



18:00 – 19:00

J.L. Bravo

Social activity

M. Caubergh







Social dinner



Click here to have more information.

Group Picture