UNIVERSIDADE FEDERAL DO CEARÁ
CENTRO DE CIÊNCIAS
PÓS-GRADUAÇÃO EM MATEMÁTICA
CERTIFICATE
We hereby certify that ALFONSO ROMERO SARABIA (Universidad de Granada, Spain)
participated in the International Meeting on Differential Geometry and Partial Differential Equations in Honor to The
80th Birthday of Professor Antonio Gervasio Colares promoted by Department of Mathematics, in Fortaleza, Ceará,
from August 15 to 19, 2011, having delivered the conference(s) entitled(s) "Constant mean curvature spacelike
surfaces and Calabi-Bernstein problems in 3-dimensional Generalized Robertson-Walker spacetimes.".
Fortaleza, August 19, 2011
_________________________________________________
Prof. Dr. Jorge Herbert Soares de Lira
Coordinator
UNIVERSIDADE FEDERAL DO CEARÁ
CENTRO DE CIÊNCIAS
PÓS-GRADUAÇÃO EM MATEMÁTICA
CERTIFICATE
We hereby certify that BENNETT WILLIAM PALMER (Idaho University, USA) participated in
the International Meeting on Differential Geometry and Partial Differential Equations in Honor to The 80th Birthday
of Professor Antonio Gervasio Colares promoted by Department of Mathematics, in Fortaleza, Ceará, from August 15
to 19, 2011, having delivered the conference(s) entitled(s) "Anisotropic Surface Energy".
Fortaleza, August 19, 2011
_________________________________________________
Prof. Dr. Jorge Herbert Soares de Lira
Coordinator
UNIVERSIDADE FEDERAL DO CEARÁ
CENTRO DE CIÊNCIAS
PÓS-GRADUAÇÃO EM MATEMÁTICA
CERTIFICATE
We hereby certify that CHRISTIAN BÄR (Universität Potsdam, Germany) participated in the
International Meeting on Differential Geometry and Partial Differential Equations in Honor to The 80th Birthday of
Professor Antonio Gervasio Colares promoted by Department of Mathematics, in Fortaleza, Ceará, from August 15 to
19, 2011, having delivered the conference(s) entitled(s) "Path and functional integrals on manifolds.".
Fortaleza, August 19, 2011
_________________________________________________
Prof. Dr. Jorge Herbert Soares de Lira
Coordinator
UNIVERSIDADE FEDERAL DO CEARÁ
CENTRO DE CIÊNCIAS
PÓS-GRADUAÇÃO EM MATEMÁTICA
CERTIFICATE
We hereby certify that DJAIRO GUEDES DE FIGUEIREDO (UNICAMP) participated in the
International Meeting on Differential Geometry and Partial Differential Equations in Honor to The 80th Birthday of
Professor Antonio Gervasio Colares promoted by Department of Mathematics, in Fortaleza, Ceará, from August 15 to
19, 2011, having delivered the conference(s) entitled(s) "Problemas de Dirichlet para o p-Laplaciano".
Fortaleza, August 19, 2011
_________________________________________________
Prof. Dr. Jorge Herbert Soares de Lira
Coordinator
UNIVERSIDADE FEDERAL DO CEARÁ
CENTRO DE CIÊNCIAS
PÓS-GRADUAÇÃO EM MATEMÁTICA
CERTIFICATE
We hereby certify that EMANUEL AUGUSTO DE SOUZA CARNEIRO (IMPA) participated in the
International Meeting on Differential Geometry and Partial Differential Equations in Honor to The 80th Birthday of
Professor Antonio Gervasio Colares promoted by Department of Mathematics, in Fortaleza, Ceará, from August 15 to
19, 2011, having delivered the conference(s) entitled(s) "On some consequences of the Riemann hypothesis.".
Fortaleza, August 19, 2011
_________________________________________________
Prof. Dr. Jorge Herbert Soares de Lira
Coordinator
UNIVERSIDADE FEDERAL DO CEARÁ
CENTRO DE CIÊNCIAS
PÓS-GRADUAÇÃO EM MATEMÁTICA
CERTIFICATE
We hereby certify that ENRIQUE FERNÁNDEZ CARA (Universidad de Sevilla, ES) participated
in the International Meeting on Differential Geometry and Partial Differential Equations in Honor to The 80th
Birthday of Professor Antonio Gervasio Colares promoted by Department of Mathematics, in Fortaleza, Ceará, from
August 15 to 19, 2011, having delivered the conference(s) entitled(s) "Global Carleman inequalities and control
results for systems governed by PDEs".
Fortaleza, August 19, 2011
_________________________________________________
Prof. Dr. Jorge Herbert Soares de Lira
Coordinator
UNIVERSIDADE FEDERAL DO CEARÁ
CENTRO DE CIÊNCIAS
PÓS-GRADUAÇÃO EM MATEMÁTICA
CERTIFICATE
We hereby certify that FERNANDO CODÁ DOS SANTOS CAVALCANTI MARQUES (IMPA)
participated in the International Meeting on Differential Geometry and Partial Differential Equations in Honor to The
80th Birthday of Professor Antonio Gervasio Colares promoted by Department of Mathematics, in Fortaleza, Ceará,
from August 15 to 19, 2011, having delivered the conference(s) entitled(s) "Rigidity of min-max minimal spheres in
three-manifolds.".
Fortaleza, August 19, 2011
_________________________________________________
Prof. Dr. Jorge Herbert Soares de Lira
Coordinator
UNIVERSIDADE FEDERAL DO CEARÁ
CENTRO DE CIÊNCIAS
PÓS-GRADUAÇÃO EM MATEMÁTICA
CERTIFICATE
We hereby certify that HAROLD WILLIAM ROSENBERG (IMPA) participated in the International
Meeting on Differential Geometry and Partial Differential Equations in Honor to The 80th Birthday of Professor
Antonio Gervasio Colares promoted by Department of Mathematics, in Fortaleza, Ceará, from August 15 to 19, 2011,
having delivered the conference(s) entitled(s) "An integer valued degree theory for hyper-surfaces of prescribed
curvature".
Fortaleza, August 19, 2011
_________________________________________________
Prof. Dr. Jorge Herbert Soares de Lira
Coordinator
UNIVERSIDADE FEDERAL DO CEARÁ
CENTRO DE CIÊNCIAS
PÓS-GRADUAÇÃO EM MATEMÁTICA
CERTIFICATE
We hereby certify that KATSUEI KENMOTSU (Tohoku University, Japan) participated in the
International Meeting on Differential Geometry and Partial Differential Equations in Honor to The 80th Birthday of
Professor Antonio Gervasio Colares promoted by Department of Mathematics, in Fortaleza, Ceará, from August 15 to
19, 2011, having delivered the conference(s) entitled(s) "Surfaces with parallel mean curvature vector in the
complex hyperbolic plane revisited.".
Fortaleza, August 19, 2011
_________________________________________________
Prof. Dr. Jorge Herbert Soares de Lira
Coordinator
UNIVERSIDADE FEDERAL DO CEARÁ
CENTRO DE CIÊNCIAS
PÓS-GRADUAÇÃO EM MATEMÁTICA
CERTIFICATE
We hereby certify that KETI TENENBLAT (UnB) participated in the International Meeting on
Differential Geometry and Partial Differential Equations in Honor to The 80th Birthday of Professor Antonio Gervasio
Colares promoted by Department of Mathematics, in Fortaleza, Ceará, from August 15 to 19, 2011, having delivered
the conference(s) entitled(s) "Local Symplectic Invariants for Curves.".
Fortaleza, August 19, 2011
_________________________________________________
Prof. Dr. Jorge Herbert Soares de Lira
Coordinator
UNIVERSIDADE FEDERAL DO CEARÁ
CENTRO DE CIÊNCIAS
PÓS-GRADUAÇÃO EM MATEMÁTICA
CERTIFICATE
We hereby certify that LIHE WANG (University og Iowa, USA) participated in the International
Meeting on Differential Geometry and Partial Differential Equations in Honor to The 80th Birthday of Professor
Antonio Gervasio Colares promoted by Department of Mathematics, in Fortaleza, Ceará, from August 15 to 19, 2011,
having delivered the conference(s) entitled(s) "The regularity theory for degenerate equations.".
Fortaleza, August 19, 2011
_________________________________________________
Prof. Dr. Jorge Herbert Soares de Lira
Coordinator
UNIVERSIDADE FEDERAL DO CEARÁ
CENTRO DE CIÊNCIAS
PÓS-GRADUAÇÃO EM MATEMÁTICA
CERTIFICATE
We hereby certify that LUIS JOSÉ ALIAS LINARES (Universidad de Murcia, Spain) participated
in the International Meeting on Differential Geometry and Partial Differential Equations in Honor to The 80th
Birthday of Professor Antonio Gervasio Colares promoted by Department of Mathematics, in Fortaleza, Ceará, from
August 15 to 19, 2011, having delivered the conference(s) entitled(s) "Curvature estimates
hypersurfaces via geometric analysis of Lorentzian distance function.".
Fortaleza, August 19, 2011
_________________________________________________
Prof. Dr. Jorge Herbert Soares de Lira
Coordinator
for spacelike
UNIVERSIDADE FEDERAL DO CEARÁ
CENTRO DE CIÊNCIAS
PÓS-GRADUAÇÃO EM MATEMÁTICA
CERTIFICATE
We hereby certify that MANFREDO PERDIGÃO DO CARMO (IMPA) participated in the
International Meeting on Differential Geometry and Partial Differential Equations in Honor to The 80th Birthday of
Professor Antonio Gervasio Colares promoted by Department of Mathematics, in Fortaleza, Ceará, from August 15 to
19, 2011, having delivered the conference(s) entitled(s) "-".
Fortaleza, August 19, 2011
_________________________________________________
Prof. Dr. Jorge Herbert Soares de Lira
Coordinator
UNIVERSIDADE FEDERAL DO CEARÁ
CENTRO DE CIÊNCIAS
PÓS-GRADUAÇÃO EM MATEMÁTICA
CERTIFICATE
We hereby certify that MARCO RIGOLI (Università di Milano, IT) participated in the
International Meeting on Differential Geometry and Partial Differential Equations in Honor to The 80th Birthday of
Professor Antonio Gervasio Colares promoted by Department of Mathematics, in Fortaleza, Ceará, from August 15 to
19, 2011, having delivered the conference(s) entitled(s) "On the geometry of solitons".
Fortaleza, August 19, 2011
_________________________________________________
Prof. Dr. Jorge Herbert Soares de Lira
Coordinator
UNIVERSIDADE FEDERAL DO CEARÁ
CENTRO DE CIÊNCIAS
PÓS-GRADUAÇÃO EM MATEMÁTICA
CERTIFICATE
We hereby certify that MARCOS DAJCZER (IMPA) participated in the International Meeting on
Differential Geometry and Partial Differential Equations in Honor to The 80th Birthday of Professor Antonio Gervasio
Colares promoted by Department of Mathematics, in Fortaleza, Ceará, from August 15 to 19, 2011, having delivered
the conference(s) entitled(s) "Submanifolds with nonparallel first normal bundle.".
Fortaleza, August 19, 2011
_________________________________________________
Prof. Dr. Jorge Herbert Soares de Lira
Coordinator
UNIVERSIDADE FEDERAL DO CEARÁ
CENTRO DE CIÊNCIAS
PÓS-GRADUAÇÃO EM MATEMÁTICA
CERTIFICATE
We hereby certify that PAOLO PICCIONE (USP) participated in the International Meeting on
Differential Geometry and Partial Differential Equations in Honor to The 80th Birthday of Professor Antonio Gervasio
Colares promoted by Department of Mathematics, in Fortaleza, Ceará, from August 15 to 19, 2011, having delivered
the conference(s) entitled(s) "Multiple brake orbits and homoclinics in Riemannian manifolds.".
Fortaleza, August 19, 2011
_________________________________________________
Prof. Dr. Jorge Herbert Soares de Lira
Coordinator
UNIVERSIDADE FEDERAL DO CEARÁ
CENTRO DE CIÊNCIAS
PÓS-GRADUAÇÃO EM MATEMÁTICA
CERTIFICATE
We hereby certify that RENATO DE AZEVEDO TRIBUZY (UFAM) participated in the
International Meeting on Differential Geometry and Partial Differential Equations in Honor to The 80th Birthday of
Professor Antonio Gervasio Colares promoted by Department of Mathematics, in Fortaleza, Ceará, from August 15 to
19, 2011, having delivered the conference(s) entitled(s) "Rigidity of convex surfaces in homogeneous spaces".
Fortaleza, August 19, 2011
_________________________________________________
Prof. Dr. Jorge Herbert Soares de Lira
Coordinator
UNIVERSIDADE FEDERAL DO CEARÁ
CENTRO DE CIÊNCIAS
PÓS-GRADUAÇÃO EM MATEMÁTICA
CERTIFICATE
We hereby certify that WILLIAM HAMILTON MEEKS III (University of Massachusetts, USA)
participated in the International Meeting on Differential Geometry and Partial Differential Equations in Honor to The
80th Birthday of Professor Antonio Gervasio Colares promoted by Department of Mathematics, in Fortaleza, Ceará,
from August 15 to 19, 2011, having delivered the conference(s) entitled(s) "Constant mean curvature spheres in
homogeneous 3-manifolds.".
Fortaleza, August 19, 2011
_________________________________________________
Prof. Dr. Jorge Herbert Soares de Lira
Coordinator
UNIVERSIDADE FEDERAL DO CEARÁ
CENTRO DE CIÊNCIAS
PÓS-GRADUAÇÃO EM MATEMÁTICA
CERTIFICATE
We hereby certify that YANYAN LI (Rutgers University, USA) participated in the International
Meeting on Differential Geometry and Partial Differential Equations in Honor to The 80th Birthday of Professor
Antonio Gervasio Colares promoted by Department of Mathematics, in Fortaleza, Ceará, from August 15 to 19, 2011,
having delivered the conference(s) entitled(s) "Strong maximum principle for singular solutions of elliptic equations
and related topics.".
Fortaleza, August 19, 2011
_________________________________________________
Prof. Dr. Jorge Herbert Soares de Lira
Coordinator