ALGA - 2001

Fourth Meeting of the Brazilian Group in

Commutative Algebra and Algebraic Geometry

poster by Renata Maiato
The fourth meeting of the Group will take place in Hotel Portogalo, Angra dos Reis, a coastal town 150 km south of Rio de Janeiro from August 5 to 11, 2001. Here's a larger and sharper version of our poster
 

Organizing Committee

List of participants

Time Table

Time\Date Monday Tuesday Wednesday Thursday Friday
09:00-09:50 Van der Geer Abhyankar Vasconcelos Caporaso Haran
10:00-10:50 Gatto Saia Engler Avritzer Gimenez
10:50-11:20 Break Break Break Break Break
11:20-12:10 Villarreal Korchmáros Hefez Simis Vainsencher
12:10-15:40 Lunch Lunch Lunch Lunch Lunch
15:40-16:30 Kaji Russo Collier Torres
16:30-17:00 Break Break Break Break
17:00-17:50 Prestel Chardin Stichtenoth Lange
18:00-18:30 Abdón Quoos Brusamarello
18:30-19:00 Doering Escudeiro

 

Talks

(Click on title to get the abstract)


Monday:

09:00 - 09:50 Gerard van der Geer Counting curves over finite fields and Siegel modular forms
10:00 - 10:50 Letterio Gatto Degeneration of special Weierstrass points on stable curves
11:20 - 12:10 Rafael Villarreal Ehrhart rings and normality
15:40 - 16:30 Hajime Kaji On the reflexivity and the Gauss maps of Segre varieties
17:00 - 17:50 Alexander Prestel Representation theorems for real commutative rings
18:00 - 18:30 Miriam Abdón Maximal curves over finite fields
18:30 - 19:00 Luisa Doering Cohomological degrees and Hilbert functions of graded modules


Tuesday:

09:00 - 09:50 Shreeram Abhyankar Nice equations for nice groups
10:00 - 10:50 Marcelo Saia Deformations with constant Milnor number and multiplicity of non-degenerate complex hypersurfaces
11:20 - 12:10 Gabor Korchmáros Automorphism groups of maximal curves over finite fields
15:40 - 16:30 Francesco Russo On varieties with one apparent double point
17:00 - 17:50 Marc Chardin Castelnuovo-Mumford regularity and the degrees of "defining equations"
18:00 - 18:30 Luciane Quoos Curves over Finite Fields with many rational points
18:30 - 19:00 Marcelo Escudeiro Analytic classification of curve singularities with semigroup <6,9,19>


Wednesday:

09:00 - 09:50 Wolmer Vasconcelos Effective normality criteria for algebras of linear type
10:00 - 10:50 Antônio Engler Kaplansky's radical and a recursive description of pro-$2$ Galois groups
11:20 - 12:10 Abramo Hefez On the classification of germs of curves


Thursday:

09:00 - 09:50 Lucia Caporaso Modular properties of theta characteristics
11:20 - 12:10 Dan Avritzer Curves of genus 2 and Desargues configurations
15:40 - 16:30 Aron Simis On gradient ideals and polar maps
15:40 - 16:30 Severino Collier Coutinho On the $d$-simplicity of polynomial rings
17:00 - 17:50 Henning Stichtenoth Explicit Construction of Codes beyond the Gilbert-Varshamov Bound
18:00 - 18:30 Rosali Brusamarello Orthogonal groups containing a given maximal torus
18:30 - 19:00


Friday:

09:00 - 09:50 Dan Haran Projective structure and block approximation
10:00 - 10:50 Philippe Gimenez On the Castelnuovo-Mumford regularity of projective monomial varieties
10:00 - 10:50 Israel Vainsencher Genus 2, degree 5
11:20 - 12:10 Fernando Torres On the genus of a maximal curve
17:00 - 17:50 Herbert Lange Abelian varieties with group action

  At the moment, abstracts for a few talks are also available in pdf format:
 
Last update: August 3, 2001
 
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