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The Geometry
Seminar at IME-USP during the years of 2013-2018 were organized by Prof. Marcos Alexandrino and Prof. Paolo Piccione and supported by Projeto
Temático-Fapesp of Prof. Paolo Piccione ( Fapesp 2016/23746-6/Fapesp: 2011/21362-2)
- USP-UNICAMP Geometry Seminar (at IME USP)
- November 29, 2018 at 14h
- Title: Resolvent trace asymptotics on singular spaces
- Speaker: prof. Luiz Hartmann (UFSCar)
- Abstract:
In his seminal work ``Spectral Geometry of Singular Riemannian
Spaces'', Jeff Cheeger started an influential program on spectral
analysis on stratified spaces with singular Riemannian metrics. The
ultimate goal of the program is
to establish resolvent trace asymptotics in this very general setting.
We propose to discuss the development of Cheeger's program until the
recent days
- USP-UNICAMP Geometry Seminar (at IME USP)
- November 29, 2018 at 15.10h
- Title: Spin(7)-instantons e fibrados de Higgs
- Speaker: Pedro Manfrim
- Abstract:
Um dos interesses da teoria de calibre em dimensão
superior é estender, para holonomia especial, o resultados
obtidos em dimensão baixa. No caso de Spin(7), isso nos leva a
estudar os Spin(7)-instantons que são mínimos do
funcional de Yang-Mills. Após uma breve introdução
a esses instantons, eu mostrarei como podemos obter, por
redução dimensional, exemplos de instantons a partir de
fibrados de Higgs. Caso haja tempo, explicarei como tal
construção pode ser usada para obter instantons sobre
somas conexas torcidas.
- USP-UNICAMP Geometry Seminar (at IME USP)
- November 29, 2018 at 15.45h
- Title: Log-term of the Bergman kernel and Szegö kernel of the disc bundle over polarised manifold
- Speaker:prof. Roberto Mossa (USP)
- Abstract:
In this seminar we present the results on the vanishing of the
log-term on the Fefferman expansion of the Bergmann kernel of the disc
bundle over a homogeneous Kahler manifold obtained on Ann. Global Anal.
Geom. (2017) in collaboration with A. Loi and F. Zuddas. As well as
some new results on the vanishing of the log term of the Szegö
kernel of the corresponding unit circle bundle. These results are
related to the classical Ramadanov conjecture and are inspired by the
work of Z. Lu and G. Tian (Duke Math. J. 125:351-387, 2004). In
particular this results confirm the conjecture of Lu according to which
the coefficients a_k of the Tian-Yau-Zelditch expansion of the Kempf
distortion function, vanish for k > n if and only if the log-term of
the Szegö kernel vanishes.
- USP-UNICAMP Geometry Seminar(at IME USP)
- November 29, 2018 at 16.50h
- Title: On the Balanced condition for the Eguchi-Hanson and Simanca metrics.
- Speaker: Francesco Cannas Aghedu
- Abstract:
vide pdf.
- November 30, 2018 at 14.00h
- Title: Estimativas
do índice de Morse de hipersuperfícies CMC fechadas
em S^5 pelo segundo número de Betti.
- Speaker:prof. Darlan Ferreira de Oliveira (Universidade Estadual de Feira de Santana)
- Abstract: Neste
seminário, provaremos uma estimativa para o índice de
Morse para superfícies CMC fechadas imersas
em espaços de curvatura seccional não negativa pelo
primeiro número de Betti. Em seguida, mostraremos como
adaptar a técnica utilizada para superfícies para
obter uma estimativa para o índice de Morse de
hipersuperfícies CMC
fechadas imersas em S^5 pelo segundo número de Betti.
- November 23, 2018 at 14h
- Title:
Rigidez topológica para hipersuperfícies de formas espaciais esféricas
- Speaker: Eduardo Longa
- Abstract:
Apresentarei um resultado de rigidez topológica para
hipersuperfícies fechadas da esfera euclidiana
e de formas espacias esféricas. Sob uma certa cota inferior para o valor absoluto das curvaturas principais da
hipersuperfície, provamos que ela é difeomorfa a uma
esfera ou a um quociente da esfera por uma ação de um
grupo. Provaremos também outro resultado sobre
hipersuperfícies fechadas da esfera, que leva em
consideração
a imagem de sua aplicação de Gauss.
- October 26, 2018
- Title:
Balanced metrics on the blow-up of C2 at the origin
- Speaker: Francesco Cannas Aghedu (University of Cagliari, Italy )
- Abstract: vide link
- October 04 USP-UNICAMP Geometry Seminar (at UNICAMP)
- Prof. Stefano Nardulli (UFABC)
- Dr. Icaro Gonçalves (USP/ UFABC)
- October 05, 2018 at 14h
- Title:
Dualidade para (1,1)-tensores lineares em fibrados e uma
aplicação para estruturas de Poisson-Nijenhuis.
- Speaker: Prof. Thiago Drummond (UFRJ)
- Abstract:
Para um fibrado E, é bastante conhecida a correspondência
entre campos lineares em E (i.e. campos cujo fluxo é por
automorfismos do fibrado) e em seu dual E*. Nessa palestra,
apresentaremos uma nova dualidade para (1,1)-tensores lineares em E.
Como exemplos de tensores satisfazendo essa relação de
dualidade, tem-se: as estrutura complexas no espaço total de um
fibrado holomorfo e em seu dual; os levantamentos tangente e cotangente
de um endomorfismo da base. Como aplicação, vamos
revisitar a teoria de estruturas de Poisson-Nijenhuis usando essa
teoria de dualidade.
- September 28, 2018 at 14h
- Title: Leaf topology of minimal foliations on 3-manifolds
- Speaker: Prof. Carlos Menino Coton
- Abstract: In this
talk, we show examples of minimal hyperbolic foliations on closed
3-manifolds with a leaf homeomorphic to any closed surface puntured
along a finite set (for instance a puntured torus). Moreover, we show
examples of minimal foliations whose generic leaf is a hyperbolic plane
but there is some leaf with infinite genus. Both examples are realized
on Seifert manifolds and the transverse regularity of the foliation is
just C^1. These exemples provide interesting corollaries and constitute
a family of counterexamples to some conjectures in the area.
This is joint work with Paulo Gusmão (UFF)
- venue: 243A
- September 14, 2018 at 14h
- Title: Locally conformally symplectic convexity
- Speaker: Prof. Oliver Goertsches
- Abstract: After discussing the celebrated convexity theorem of Atiyah and
Guillemin--Sternberg, stating that the image of the momentum map of an
Hamiltonian torus action is a convex polytope, we explain a recent
generalization to locally conformally symplectic geometry obtained in
joint work with Florin Belgun and David Petrecca.
- August 17, 2018 at 14h
- Title: Split Ricci-parallel connections on SL groups
- Speaker: Andrzej Derdzinski
- Abstract: The set
E of Levi-Civita connections of left-invariant pseudo-Riemannian
Einstein metrics on a given semisimple Lie group G always includes D,
the Levi-Civita connection of the Killing form. When G is noncompact, a
still-open 1975 conjecture of Dmitry Alekseevsky, if true, would imply
that such left-invariant Einstein metrics on G are all indefinite. For
the groups of the SL series, we explicitly describe several
distinguished connected components of E. This extends an earlier
result, joint with Swiatoslaw R. Gal, of the component of E which
contains D. The emerging picture is consistent with Alekseevsky’s
conjecture. The approach focuses on connections rather than metrics,
which has the advantage of simultaneously generalizing and simplifying
the algebraic aspect of the question.
- Modern Trends in Differential Geometry: preliminary talks
- July 19, 2018 at 14h
- Title: Cone structures and Finsler spacetimes
- Speaker: Prof. Miguel Angel Javaloyes
- Abstract: We will introduce the notions of cone structures and Finsler spacetimes,
establishing an explicit relation between both concepts and providing a good amount of examples.
Indeed, we will give a characterization of all the possible Lorentz-Finsler metrics under some regularity conditions.
Finally, we will explore some basic properties of Finsler spacetimes,
which include maximizing properties of geodesics and basic results on
Causality.
- venue: Auditório Gilioli
- Modern Trends in Differential Geometry: preliminary talks
- July 19, 2018 at 15h
- Title: Uma re-definiçao do conceito de buraco negro usando fronteiras causais.
- Speaker: Dr. Jonatan Herrera
- Abstract: A
definiçao clasica de buraco negro [2,4] é apresentada em
termos da denominada fronteira conforme. Para esta aproximaçao
de buraco negro, define-se inicialmente o denominado "future null
infinity" $\mathcal{J}^+$, um subconjunto da borda conforme que joga o
role de "area de fuga" do buraco negro. Deste modo, um ponto
está fora do buraco negro se pode ser conectado com
$\mathcal{J}^+$ por meio de uma curva causal.A definiçao
anterior apresenta porem um problema importante, a fronteira conforme
nao pode ser obtida para todo modelo de espaço-tempo. Este
é o caso, como foi observado por Marolf e Ross, das ondas planas
[3]. Para evitar esse problema, nos apresentaremos uma nova
definiçao de buraco negro com base na fronteira causal. Esta
fronteira está definida para qualquer modelo de espaço
tempo fortemente causal, incluindo modelos onde a fronteira conforme
nao esta disponivel. Provaremos que a maioria das propriedades clasicas
de buraco negro sao preservadas com esta definiçao, incluindo
que as denominadas superficies atrapadas estao completamente cobertas
por buracos negros se a condiçao de convergencia luminosa
é satisfeita. Finalmente, mostraremos que as ondas planas
generalizadas causalmente continuas nao admitem buracos negros.
[1] José Luis Flores, Jónatan Herrera, and Miguel
Sánchez, On the final definition of the causal boundary and its
relation with the conformal boundary, Advances in Theoretical and
Mathematical Physics 15 (2011), no. 4, 991–1057.
[2] Stephen W. Hawking and George F. R. Ellis, The Large Scale
Structure of Space-Time (Cambridge Monographs on Mathematical Physics),
Cambridge University Press, 1975.
[3] Donald Marolf and Simon F. Ross, Plane waves: To infinity and
beyond!, Classical and Quantum Gravity 19 (2002), no. 24,
6289–6302.
[4] R.M. Wald, General Relativity, University of Chicago Press, 1984.
- venue: Auditório Gilioli
- Modern Trends in Differential Geometry: preliminary talks
- July 19, 2018 at 16:30h
- Title: Geometry of null hypersurfaces
- Speaker: Oscar Alfredo Palmas Velasco
- Abstract: In this
talk I will review the techniques for studying null hypersurfaces in
Lorentzian manifolds and give the characterization of them when adding
the condition of being totally umbilical or isoparametric.
- venue: Auditório Gilioli
- Modern Trends in Differential Geometry: preliminary talks
- July 19, 2018 at 17:30h
- Title: On isoparametric surfaces in homogeneous 3-spaces
- Speaker: Prof. Miguel Vazquez
- Abstract: A
hypersurface of a Riemannian manifold is called isoparametric if it and
its nearby equidistant hypersurfaces have constant mean curvature. In
spaces of constant curvature, Cartan proved that a hypersurface is
isoparametric
if and only if has constant principal curvatures. However, this
characterization does not necessarily hold in spaces of nonconstant
curvature. In this talk I will present a recent joint work with
José Miguel Manzano (ICMAT-CSIC, Madrid)
where we initiated the study of isoparametric surfaces and surfaces
with constant principal curvatures in homogenous 3-spaces, obtaining
their classification in the homogeneous 3-spaces with 4-dimensional
isometry group.
- venue: Auditório Gilioli
- Modern Trends in Differential Geometry: preliminary talks
- July 20, 2018 at 14h
- Title: Diameter of quotients of the sphere by isometric group actions.
- Speaker: Dr. Ricardo Mendes
- Abstract: (Joint
with C. Gorodski, C. Lange, A. Lytchak) We show the existence of C>0
such that, for all n>1 and every closed non-transitive subgroup G of
O(n+1), the diameter of the quotient of the unit sphere S^n by G is
larger than C. The novelty is that C is independent of the dimension n.
The classification of finite simple
groups is used in the proof.
- venue: Auditório Gilioli
- Modern Trends in Differential Geometry: preliminary talks
- July 20, 2018 at 15.00h
- Title: Remarks on the abelian convexity theorem
- Speaker: Prof. Leonardo Biliotti
- Abstract: in this
seminar we discuss abelian convexity theorem. Convexity along an orbit
is established in a very general setting using Kempf-Ness functions.
This is applied to give short proofs of the Atiyah-Guillemin-Sternberg
theorem and of abelian convexity for the gradient map in the case of a
real analytic submanifold of complex projective space. Finally we give
an application to the action on the probability measures. This is a
joint work with Alessandro Ghigi that
has been accepted for pubblication on PAMS.
- venue: Auditório Gilioli
- Modern Trends in Differential Geometry: preliminary talks
- July 20, 2018 at 16:30h
- Title: Extending a diffeomorphism finiteness theorem to dimension 4.
- Speaker: Prof. Curtis Pro (California State University, Stanislaus)
- Abstract: In the early 90s, Grove, Petersen, and Wu, and independently Perelman, showed in dimensions different than 4,
the conclusion of Cheeger's Finiteness Theorem still holds without the assumption of an upper curvature bound.
Namely, given numbers $k\in\mathbb R, v, D>0$, if $n\neq 4$, there
are at most finitely many differentiable structures on the class of
$n$-manifolds $M$ that support metrics with $\sec M\geq k,
\mathrm{vol}\,M\geq v,$ and $\mathrm{diam}\,M\leq D.$
In this talk, I'll present current joint work with Fred Wilhelm that
shows, with a new approach, the same is also true in dimension 4.
- venue: Auditório Gilioli
- Modern Trends in Differential Geometry: preliminary talks
- July 20, 2018 at 17:30h
- Title: A Weitzenboeck viewpoint on sectional curvature and applications
- Speaker: Prof. Renato G. Bettiol
- Abstract: In this talk, I will describe a new algebraic characterization of
sectional curvature bounds that only involves curvature terms in the
Weitzenb\"ock formulae for symmetric tensors. This characterization is
further clarified by means of a symmetric analogue of the
Kulkarni-Nomizu product, which renders it computationally amenable.
Furthermore, a related application of the Bochner technique to closed
4-manifolds with indefinite intersection form and positive or
nonnegative sectional curvature will be discussed, yielding some new
insight about the Hopf Conjecture. This is based on joint work with R.
Mendes (Univ. zu Koeln, Germany)
- venue: Auditório Gilioli
- USP-UNICAMP Geometry Seminar
- June 8, 2018 at 14h
- Title: A Holder continuidade Local do perfil isoperimétrico numa Variedade Riemanniana completa não compacta
com geometria limitada.
- Speaker: Prof. Abraham Munoz Flores-UERJ
- Abstract: vide pdf
- USP-UNICAMP Geometry Seminar
- June 8, 2018 at 15h-15:30h
- Title: An analysis of the reduced thin-sandwich equations
- Speaker: Dr. Rodrigo Avalos (UFC)
- Abstract: vide pdf
- USP-UNICAMP Geometry Seminar
- June 8, 2018 at 16h
- Title: A toy model for homogeneous contact geometry
- Speaker: Eder de Moraes Correa - IMPA
- Abstract: vide pdf
- May25, 2018 at 14h
- Title: Variedades riemannianas planas e reduzibilidade
- Speaker: Prof. Andrzej Derdzinski
- Abstract: Em um
artigo publicado no Journal of Pure and Applied Algebra (1991)Hiss e
Szczepanski provaram um teorema que estabelece a reduzibilidade da
representação de holonomia para toda variedade
riemanniana compacta plana de dimensão maior que um, com a
conclusão adicional que o subespaço invariante não
nulo e próprio do espaço tangente pode ser escolhido de
tal modo que ele seja gerado por um subconjunto do reticulado associado
à variedade dada.O que nos interessa aqui são algumas
consequências geométricas do resultado mencionado acima e
as suas ramificações no contexto dum outro teorema,
obtido pelos mesmos autores em um artigo de 1997, segundo o qual
em certas
dimensões maiores que 20 existem variedades riemannianas
compactas planas cujo primeiro numero de Betti é igual a zero.
- May 25, 2018 at 15h
- Title: Geometric Stacks and Groupoids
- Speaker: Joel Villatoro
- Abstract: This talk will survey some folklore theorems about the interaction between the theory of Lie groupoids
and geometric stacks on the site of smooth manifolds. To do this, a more general theorem
about the relationship between geometric stacks on a site and internal groupoids will be discussed.
I will show how considering alternative sites can be applied to
studying Morita equivalences of Lie groupoids equipped with additional
geometry.
- May 8, to May 10 2018, , at 14:30
- Title: An introduction to Flat Manifolds (mini-curso)
- Speaker: Prof. Prof. Andrzej Szczepanski (Gdansk, Polônia)
- Abstract:
- Lecture 1: Definitions. Crystallographic groups. Bieberbach Theorems.
- Lecture 2: Classification: Methods by H. Zassenhaus, E. Calabi and A. T. Vazquez
- Lecture 3: Symmetries of Flat Manifolds and Crystallographic Groups. Examples and open problems.
- Reference: L. S. Charlap - Bieberbach Groups and Flat Manifolds, Springer 1986
A. Szczepanski - Geometry of Crystallographic Groups, World Scientific 2012
J. Wolf - Spaces of constant curvature, McGraw - Hill, 1967
- USP-UNICAMP Geometry Seminar
- May 4, 2018 at Unicamp
- 13:00 - 13:15 - Leonardo Cavenaghi (USP)
- 13:15 - 14:00 - Daniel Fadel (IMECC)
- 14:00 - 15:00 - Carlos Grossi (ICMC-USP SCar)
- 15:00 - 15:15 - Intervalo
- 15:15 - 16:15 - Paolo Piccione (IME-USP)
- Abstracts: see http://www.ime.unicamp.br/~geodif/
- April 20, 2018 at 14h
- Title: Holonomic submanifolds
- Speaker: Marcos Dajczer (IMPA)
- Abstract:An isometric immersion of a Riemannian manifold into a space form is said to be holonomic if the manifold carries
a global system of orthogonal coordinates such that at any point the
coordinate vector fields diagonalize the second fundamental form.
In this talk I will discuss several results, ranging from classical to
recent, about these submanifolds.
- April 25, 2018 at 15h
- Title: A classification of semistable Higgs bundles on Calabi-Yau manifolds
- Speaker: Valeriano Lanza
- Abstract: In a
recent work by Biswas, Bruzzo, Graña Otero and Lo Giudice it is
shown that on a simply connected Calabi-Yau manifold there is no
polystable Higgs bundle with nontrivial Higgs field. The same is not
true for semistable Higgs bundles, as examples can be easily provided.
Nevertheless, Higgs fields for semistable Higgs bundles on Calabi-Yau
manifolds are strongly constrained. The goal of this talk is to discuss the situation for bundles of low rank,
for which we are able to provide a complete classification of possible
Higgs fields. Furthermore, we provide also an application to a
conjecture about a particular class of semistable Higgs bundles (the
so-called curve
semistable ones), which is proved for K3 and related surfaces.
- March 7, 2018 at 14h
- Title: Robust index bounds for minimal hypersurfaces in compact symmetric spaces and isoparametric submanifolds
- Speaker: Dr Ricardo Mendes (Universitaet zu Koeln)
- Abstract: (joint work with C. Gorodski and M. Radeschi)
It has been conjectured by Marques-Neves-Schoen that, for every compact
Riemannian manifold (M,g) with positive Ricci curvature, there exists a
positive constant C such that every closed minimal hypersurface of M
has Morse index bounded below by C times its first Betti number. This
conjecture has been verified for the spheres by Savo, for every compact
rank
one symmetric space by Ambrozio-Carlotto-Sharp, and for every compact
symmetric space (with the index replaced with index plus nullity) by
Mendes-Radeschi. In the present work we expand this list of examples to
infinitely many isoparametric hypersurfaces of spheres and their focal
manifolds. We also show that, for all our new examples, as well as many
of the
previously known examples (including the spheres), such an index bound
remains valid after any small deformation of the ambient metric g.
- February, 22, 2018 at 15h
- Title: Transnormal functions in Finsler spaces and some application in Physics.
- Speaker: Hengameh Raeisi (ime-usp)
- Abstract: In this talk, we state some results on transnormal functions on Finsler spaces
and singular foliation of codimension 1. Then some applications of transnormal functions in Physics
are provided, such as propagation of the wildfire.
- Dezember 8, 2017, 2017 14:00h
- Title: Killing foliations via deformations
- Speaker: Francisco Carlos Caramello Junior (UFScar
- November 24, 2017 14:00h
- Title: Curvatura harmônica – nenhum caso genérico
- Speaker: Prof. Andrzej Derdzinski (Ohio)
- November 24, 2017 16:30h
- Title: Folheações ortogonais em variedades riemannianas
- Speaker: Euripedes carvalho (Ime-USP/ IFCE-Ceará)
- November 24, 2017 15:00h
- Title: Principais Resultados sobre a Conjectura de Chern
- Speaker: Prof. Luiz Amancio Jr. (Uni-Rio)
- Abstract: vide Link
- November 10, 2017 15:15h
- Title: Navegando em um espaço folheado
- Speaker: Benigno Alves (IME-USP)
- USP-Unicamp Seminar (at IME-USP)
- November 10, 2017 15:30h
- Title: Imersões e Spinors
- Speaker: Prof. Rafael Leão (Unicamp)
- October 20 2017 , 2017 14h
- Title: Real geometric quantisation of K3 surfaces
- Speaker: Dr. Romero Solha (Puc-rio)
- USP-Unicamp Geometry
seminar
- October 6 2017, 2017 14h
- Title: The Geometry of Orbit Spaces:Quaternionic-torus reductions.
- Speaker: Dr. Francisco J. Gozzi (USP/UFABC)
- Place: Imecc-Unicamp
- USP-Unicamp Geometry
seminar
- October 6 2017, 2017 15h
- Title: Construction of G2G2-instantons via twisted connected sums
- Speaker: Prof. Henrique Sá Earp (UNICAMP)
- Place: Imecc-Unicamp
- September 29, 2017 14h
- Title: Aplicações de Deformações de Cheeger em curvatura positiva
- Speaker: Leonardo Francisco Cavenaghi (Unicamp)
- September 29, 2017 15h
- Title: On some equivariantly related G-manifolds (continuation of Leonardo's talk)
- Speaker:Prof. Llohann Dallagnol Sperança
- September 22, 2017 14h
- Title: The Geometry of Orbit Spaces:Quaternionic-torus reductions
- Speaker: Dr. Francisco J. Gozzi (usp/ ufabc)
- September 15, 2017, 14h
- Title: Complete minimal submanifolds with nullity in space forms.
- Speaker: Prof. Marcos Dajczer -impa
- September 15, 2017 15h
- Title: Minimal hypersurfaces in compact symmetric spaces
- Speaker: Dr. Ricardo Mendes- Uni zu Koeln
- August 11, 2017, at 11:00h
- Title: Riemannian Yang-Mills connections with quadratic constraints
- Speaker: Prof. Andrzej Derdzinski, The Ohio State University
- July 07, 2017, at 14:00h
- Title: On the moduli space of isometric surfaces with the same mean curvature in 4-dimensional space forms
- Speaker: Prof. Theodoros Vlachos (at ime-usp)
- June 23, 2017, at 14:00h
- Title: Configuraçoes de Bandeiras
- Speaker: Prof. Elisha Falbel (Université Paris 6 )
- June 9, 2017: at 14:00h
- Title: Gelfand pairs, Symmetric Spaces and Symplectic Realizations
- Speaker: Prof. Rui Loja Fernandes (University of Illinois)
- June 2, 2017: at 14:00h
- Title: A new class of minimal submanifolds
- Speaker: Prof. Marcos Dajczer (IMPA)
- May 26, 2017 2017: at 14:00h
- Title: Curvatura extrínseca de órbitas de representações
- Speaker: Artur Bicalho (IME-USP)
- May 12, 2017: at 14h
- Title: Holomorphic curves and symplectic embedding problems
- Speaker: Dr Keon Choi (IME-USP)
- May 9, 2017: at 14:30h
- Title: Harmonic curvature in dimension four
- Speaker: Prof. Andrzej Derdzinski
- USP-Unicamp Geometry
seminar
- May 5, 2017: at 15h
- Title: Rigidity and Vanishing of Basic Dolbeault Cohomology of Sasakian Manifolds
- Speaker: Prof. Dirk Toeben (Ufscar)
- Place Imecc-Unicamp
- USP-Unicamp Geometry
seminar
- May 5, 2017: at 14h
- Title: Closure of singular foliations: the proof of Molino's conjecture
- Speaker: Prof. Marcos M. Alexandrino (IME-USP)
- Place: - Imecc-Unicamp
- April 28, 2017: at 14h
- Title: On the geometry of submanifolds of the conformal sphere
- Speaker: Prof. Marco Magliaro (UFC)
- April 28, 2017: at 15h
- Title: T-duality on nilmanifolds
- Speaker: Dr. Viviana del Barco (Unicamp)
- USP-Unicamp Geometry
seminar
- April 07, 2017 at 14h
- Title:Entire unbounded constant mean curvature Killing graphs.
- Speaker: Prof. Marcos Dajczer (IMPA)
- Place: at IME-USP
- USP-Unicamp Geometry
seminar
- April 07, 2017: at 15h
- Title: Gauge theory and G2-geometry on Calabi-Yau
- Speaker: Dr.Lazaro Rodríguez (IMECC)
- Place: at IME-USP
- March 31, 2017: at 16h
- Title:String structures and Courant Reductions
- Speaker: Dr Pedram Hekmati (IMPA)
- March 30, (thursday) 2017 at 14h
- Title: Totally geodesic Riemannian foliations on Lie groups
- Speaker: Prof. Llohann Dallagnol Sperança (Unifesp)
- March 27, 29,31 2017
- Lectures: Subvariedades e ações isométricas em espaços simétricos de tipo não compacto
- Speaker: Prof. Miguel Vazquez (Madrid Spain)
- March 21, 2017 (tuesday): at 14h
- Title: Capacidades simplécticas dos espaços Hermitianos simétricos,
- Speaker: Prof. Roberto Mossa
- March 16, 2017 (thursday) at 14h
- title: Kähler manifolds with geodesic holomorphic gradients
- Speaker: Andrzej Derdzinski (The Ohio State University)
- February 6, 2017 : at 14h
- Title: The space of positive scalar curvature metrics
- Speaker: Prof. Bernhard Hanke
- 2016-11-25: at 14h
- Title: Homotopy Invariance in Lie Theory
- Speaker: Dr. Pedro Frejlich
- 2016-11-11: at 14h
- Title: Wind Finslerian structures: from Zermelo's navigation to the causality of spacetimes
- Speaker: Prof. Miguel Angel Javaloyes(Murcia-Spain)
- 2016-11-04: at 14h
- Title: Closure of singular foliations: the proof of Molino's conjecture
- Speaker: Prof. Marcos. M. Alexandrino (IME-USP)
- 2016-10-21: at 14h
- Title: Compatible triples on Lie algebroids with vector bundle metric
- Speaker: Prof. Nicolas Martinez
- 2016-10-07: at 14h
- Title: Teoria de Teichm\"uller e Colapso de Variedades Planas
- Speaker: Paolo Piccione
- 2016-08-26: at 14h
- Title: The Log-Convex Density Conjecture
- Speaker: Prof. Frank Morgan (Williams College)
- 2016-08-26: at 15:20h
- Title: Stability of measures on compact kahler manifold
- Speaker: Prof. Leonardo Billiot (Parma)
- 2016-07-01: at 14h
- Title: Subvariedades Reais em Espaços Complexos
- Speaker: Dr. Valentin Burcea
- 2016-06-24: at 14h
- Title: Gauge theory on contact 5-manifolds
- Speaker: Dr Pedram Hekmati (impa)
- 2016-06-17: at 14h
- Title: Totally Geodesic Riemannian Foliations on Lie Groups
- Speaker: Prof. Llohann Dallagnol Sperança (Centro Politécnico da UFPR)
- 2016-05-20: at 14h
- Title: Superfícies umbílicas do produto de duas formas espaciais.
- Speaker: Prof. Jaime Leonardo Orjuela Chamorro (IM-UFBA)
- 2016-05-20: at 15h
- Title: The curvature of orbit spaces
- Speaker: Prof. Claudio Gorodski (IME-USP)
- 2016-05-13: at 14h
- Title: Ciclos folheados em variedades complexas
- Speaker: Lucas Kaufmann (Paris 06)
- 2016-05-06: at 14h
- Title: The Euler class of an umbilic foliation.
- Speaker: Ícaro Gonçalves (IME-USP)
- 2016-04-29 at 14h
- Title: Hypersurfaces with constant mean curvature and three principal curvatures in S^{n+1}.
- Speaker: Prof. Sebastião Carneiro de Almeida (UFC)
- 2016-04-01 at 14h
- Title: Cuts, surgeries and toric contact structures
- Speaker: Prof Miguel Abreu (Instituto Superior Técnico, Lisboa)
- 2016-04-01 at 15h
- Title: Some applications of Lorentzian geometry to Teichmuller geometry
- Speaker:Prof. François Fillastre (France)
- 2015-11-19 at 15h (thursday)
- Title: Transverse measures and densities: from leaf spaces to differentiable stacks.
- Speaker: João Nuno Mestre
- 2015-11-06 at 14h
- Title: Gauge theory on stacks
- Speaker: Prof. Ugo Bruzzo (Scuola Internazionale Superiore di Studi Avanzati -Trieste/ UFSC)
- 2015-10-23 at 14h
- Title: Folheações polares nos espaços projetivos quaterniónicos.
- Speaker: Dr. Miguel Domínguez Vázquez (Impa)
- 2015-10-23 at 15h
- Title: Isoparametric hypersurfaces in complex hyperbolic spaces.
- Speaker: Víctor Sanmartín López (Universidade de Santiago de Compostela)
- 2015-10-16 at 14h
- Title: The shape space defined by the Gromov-Wasserstein distance
- Speaker: Prof. Facundo Memoli (Ohio State University)
- 2015-10-09 at 14h
- Title: Blow-ups of isometric actions and applications
- Speaker: Prof. Marcos Alexandrino (IME-USP)
- 2015-10-02 at 15:00h
- Title: Campos de Darboux em subvariedades de codimensão 2 contidas em hipersuperfícies.
- Speaker: Prof. Marcos Craizer (PUC-Rio)
- 2015-10-02 at 14:00h.
- Title: A Poincaré-Birkhoff theorem for Reeb flows on the tight $3$-sphere
- Speaker: Prof. Pedro Salomão (IME-USP)
- 2015-9-28 at 11h (monday-special section)
- Title: Rank rigidity in dimension 3
- Speaker: Dr. Renato Bettiol (Upenn)
- 2015-9-25 at 14h
- Title: On a Result of Berger.
- Speaker: Prof. Llohann Dallagnol Sperança (UFPR)
- 2015-9-18 at 14h
- Title: Lie groupoids and vector fields on differentiable stacks
- Speaker: Prof. Cristián Ortiz (IME-USP)
- 2015-9-04 at 14h
- Title: Smooth functions constant on the leaves of singular Riemannian foliations.
- Speaker: Dr. Ricardo Mendes (WWU-Munster)
- 2015-8-28 at 14h
- Title: Min-max, phase transitions and minimal hypersurfaces
- Speaker: Marco Méndez (Impa)
- 2015-8-28 at 15h
- Title: Cohomologia básica equivariante de uma folheação Riemanniana
- Speaker: Prof Dirk Toeben (UFscar)
- 2015-8-28 at 16h
- Title: IHyperbolic volumes of polyhedra with symmetries
- Speaker: Prof.
Nikolay Abrosimov (Sobolev Institut of Mathematics-Russia)
- 2015-8-21 at 14h
- Title: Integração e fórmulas de localização em geometria simplética
- Speaker: Carolina Torres Lozano (IME-USP)
- 2015-8-14 at 14h
- Title: Rigidity of generalized graph manifold
- Speaker: Prof. Wolfgang Ziller (Upenn)
- 2015-8-07 at 14h
- Title: Representations of 3-manifold fundamental groups into SL(n,C)
- Speaker: Prof. Elisha Falbel (Université Paris 6)
- 2015-8-07 at 15h
- Title: Constant scalar curvature Kahler metrics on manifolds.
- Speaker: Prof. Bianca Santoro (CUNY)
- Date: 2015-8-07 at 16:30h.
- Title: Mass in Kahler geometry
- Speaker: Prof. Hans Joachim Hein (University of Maryland)
- 2015-7-03 at 11h
- Title: Special Lagrangian Curvature
- Speaker: Prof. Graham Smith (UFRJ)
- 2015-7-03 at 14h
- Title: Estendendo subvariedades nos espaços simétricos de tipo não compacto
- Speaker: Dr. Miguel Dominguez Vázquez (IMPA)
- Date: 2015-06-19| 2015-06-26| 2015-7-03 at 15:15
- Title: (Workshop) Constructing Polar Actions
- Speaker: Dr. Franscisco Gozzi (IME-USP)
- 2015-6-26 at 14h
- Title: Singular subalgebroids and their integration
- Speaker: Prof Marco Zambon (KU Leuven)
- Date: 2015-6-12 at 14h.
- Title: The asymptotic Plateauís problem for minimal submanifolds and CMC hypersurfaces in a Hadamard manifold
- Speaker: Prof. Jaime Ripoll - Universidade Federal do R. G. do Sul.
- Date: 2015-03-27 at 14h.
- Title: Convexity of the solutions to the constant mean curvature spacelike surface equation in $\mathbb{L}^3$
- Speaker: Dr. Alma Albujer (University of Córdoba-Spain)
- Date: 2015-03-27 at 15h.
- Title: Dual characterizations of the $n$-dimensional sphere and hyperbolic space
- Speaker: Dr. Magdalena Caballero (University of Córdoba- Spain)
- Date: 2015-03-20 at 14h.
- Title: Homotopy type of spaces of curves with constrained curvature on flat surfaces.
- Speaker: Dr. Pedro Zühlke (IME-USP)
- Date: 2015-03-13 at 14h.
- Title: Existence and caracterization of isoperimetric regions in locally asymptotically Euclidean Riemanniana manifolds.
- Speaker: Prof. Stefano Nardulli (UFRJ)
- Date: 2014-11-07 (friday) at 14h00
- Title: Categoría tangente de folheações e teoría de pontos críticos
- Speaker: Dr. Carlos Menino (Puc-Rio)
- Date: 2014-10-17 (friday) at 14h00
- Title: Ehresmann Theorem for stacks
- Speaker: Dr. Matias L. del Hoyo (IMPA)
- Date: 2014-10-10 (friday) at 14h00
- Title: Mean curvature flow of orbits of isometric actions
- Speaker: Prof. Marcos M. Alexandrino (IME-USP)
- Date: 2014-09-26 (friday) at 14h00
- Title: Laçós nao triviais no grupo fundamental do grupo de difeomorfismos das orbitas coadjuntas.
- Speaker: Prof. David Martínez Torres (PUC-rio)
- Date: 2014-09-26, 15h
- Title: G-Estruturas (parte II)
- Speaker: Prof. Ivan Struchiner (IME-USP)
- Location: Sala 266-A
- Date: 2014-09-19 (friday) at 14h00
- Title: Números Caraterísticos de Variedades e Folheações via Localização
- Speaker: Prof. Dirk Toeben (UFSCar)
- Date: 2014-08-29 (friday) at 14h00
- Title: Zermelo navigation and flag curvature in pseudo-Finsler metrics
- Speaker: Prof Miguel Angel Javaloyes (Murcia-Spain).
- Date: 2014-08-15 (friday) at 14h00
- Title: Ações Polares de Dimensão Baixa
- Speaker: Francisco J. Gozzi (IMPA)
- Date: 14-08-08 at 14h00
- Title: Ações isométricas em esferas cujo espaço de órbitas é um orbifold Riemanniano
- Speaker: Prof: Claudio Gorodski (IME-USP)
- Date: 14-05-30 at 11h00
- Título : Folheações isoparamétricas não homogêneas e números primos.
- Speaker: Dr. Miguel Domínguez Vázquez (Impa).
- Date: 14-05-30, at 14h00
- Title:
Título: Uma limitação para a norma do supremo de
autofunções do Laplaciano em variedades riemannianas de
volume infinito
- Speaker: Patricia Kruse Klaser (UFRGS)
- Date: 14-04-16 at 15h00
- Title: Surface Theory in the product of pseudo-Riemannian two-manifolds
- Speaker: Dr. Nikos Georgiou (UFSCar)
- Date: 4-04-14 , 14h
- Title: Entire bounded constant mean curvature Killing graphs
- Speaker: Prof. M. Dajczer (IMPA)
- Date 4-04-14 15hs:
- Title: Exceptional minimal surfaces in spheres
- Speaker: Th. Vlachos (Ioannina, Grécia)
- Date: 28/ 03/ 14- 14h
- Title: Yamabe-type equations with sign-changing nonlinearity on non-compact manifolds.
- Prof. Luciano Mari (UFC)
- Sala: B-09
- Date 28/03/13- 15h
- Title:O teorema de Gauss Bonnet no espaço de Heisenberg H^1 do ponto de vista subriemanniano
- Prof:Prof. José Veloso (UFPA)
- Sala B-09
- Date: 29/11/13- 14h
- Title: Isoperimetric regions in cylinder spaces
- Speaker: Prof. Jesus Gonzalo Perez (Univ. Autonoma de Madrid, Espanha)
- Date: 25/10/13- 14h
- Title: Hyperpolar actions on noncompact symmetric spaces
- Speaker: prof. Jürgen Berndt (King's College London)
- Date: 17/10/13- 14h
- Title: Complex hyperbolic bundles and the turnover
- Speaker: prof. Carlos Grossi ( ICMC)
- Date: 11/10/13- 14h
- Title:
- Speaker: Oscar Ocampo (IME - USP)
- Date: 11/10/13- 15h
- Title: Jacobi fields and conjugate points of quadratic Finsler metrics
- Speaker: Miguel Angel Javaloyes
- Date: 27/09/2013 , 15:00 h
- Titile: O teorema do tipo de órbita
principal para grupóides de Lie
- João Nuno Mestre
- Date: 20/09/2013,
15:00h
- Title: O
colchete de Frölicher-Nijenhuis em grupóides de Lie.
- Speaker: Prof.
Thiago Drummond (UFRJ)
- Date: 20/09/ 2013
- Títle: Esferas Afins Impróprias
de Dimensão Par
- Speaker: Prof. Marcos Craizer (PUC - Rio)
- Date: 20/09/2013,
14:00h
- Title: Esferas Afins
Impróprias de Dimensão Pars
- Speaker: prof.
Miguel Angel Javaloyes da Universidade de Murcia (Espanha)
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