XXI CLA

Abstracts

 

Plenary talks

Jul25 10:00 ~ 10:50 Cluster Theory
Gordana Todorov - Northeastern University, United States
11:30 ~ 12:20 Hopf-Lie theory on hyperplane arrangements
Marcelo Aguiar - Cornell University, USA
Jul26 9:00 ~ 9:50 Elliptic fibrations and K3 surfaces
Cecília Salgado - UFRJ, Brazil
10:30 ~ 11:20 Topological methods to solve equations over groups
Andreas Thom - TU Dresden, Germany
11:30 ~ 12:20 Tame topology and Complex Analytic Geometry
Sergei Starchenko - University of Notre Dame, USA
Jul27 10:00 ~ 10:50 On new applications of noncommutative rings
Agata Smoktunowicz - University of Edinburgh, United Kingdom
11:30 ~ 12:20 Arithmetic geometry of toric varieties
Jose Ignacio Burgos Gil - ICMAT (CSIC), Spain
Jul28 9:00 ~ 9:50 Subgroups of the interval exchange transformation group.
Kate Juschenko - Northwestern University, USA
10:30 ~ 11:20 $A_{\infty}$-algebras in representation theory and homological algebra
Estanislao Herscovich - Université Grenoble Alpes - Universidad de Buenos Aires - CONICET, France - Argentina
11:30 ~ 12:20 Cluster algebras and quantum affine algebras
Bernard Leclerc - Université de Caen, France
Jul29 10:00 ~ 10:50 Sum-product estimates in finite fields
Moubariz Garaev - Universidad Nacional Autonoma de Mexico, Mexico
11:30 ~ 12:20 Tensors and their Eigenvectors
Bernd Sturmfels - UC Berkeley, USA

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Session S01 - Computational Algebra and Applications of Algebra

Chair: Alicia Dickenstein (Universidad de Buenos Aires & CONICET, Argentina)

Collaborators: Carina Curto (PSU, USA) - Luis David Garcia-Puente (Sam Houston State University, USA)

Session website

Talks

Jul28 15:00 ~ 15:25 Waring decompositions of a general polynomial vector
Giorgio Ottaviani - Università di Firenze, Italy
15:30 ~ 15:55 Varieties of apolar subschemes of toric surfaces
Nelly Villamizar - RICAM- Austrian Academy of Sciences, Austria
16:00 ~ 16:25 Resultants modulo p
Carlos D'Andrea - Universitat de Barcelona, Spain
16:30 ~ 16:55 Sums of squares and the geometry of syzygies
Mauricio Velasco - Universidad de la República (CURE) y Universidad de los Andes, Uruguay / Colombia
17:30 ~ 17:55 Computing the Homology of Real Projective Sets
Teresa Krick - UBA & CONICET, Argentina
18:00 ~ 18:25 Critical points via Monodromy and Numerical Algebraic Geometry
Abraham Martin del Campo - Conacyt - CIMAT, Mexico
18:30 ~ 18:55 Numerically computing Galois groups
Jose Rodriguez - University of Chicago, USA
19:00 ~ 19:25 Computational algebra for the working mathematician
Christopher Hillar - University of California, San Francisco, USA
Jul29 15:00 ~ 15:25 Dowker complex, convex codes, and detecting hidden matrix factorizations.
Vladimir Itskov - The Pennsylvania State University, US
15:30 ~ 15:55 Toric ideals of neural codes
Nora Youngs - Harvey Mudd College, USA
16:00 ~ 16:25 Algebraic signatures of convex and non-convex neural codes
Anne Shiu - Texas A&M University, USA
16:30 ~ 16:55 The structure of MESSI biological systems
Mercedes Pérez Millán - Universidad de Buenos Aires, Argentina
17:30 ~ 17:55 On computational aspects of the generalized differential Lüroth's theorem
Gabriela Jeronimo - Universidad de Buenos Aires - CONICET, Argentina
18:00 ~ 18:25 Arithmetical structures of graphs.
Carlos E. Valencia Oleta - Mathematics department, Cinvestav-IPN, México
18:30 ~ 18:55 Tropical Graph Curves
Manjunath Madhusudan - Queen Mary University of London, United Kingdom

Posters

Unimodular lattices via $\mathbb{Q}(\zeta_{2^rp}+\zeta_{2^rp}^{-1})$ for $p=3$ and $p=5$
Grasiele Jorge, Federal University of Sao Paulo, Brazil

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Session S02 - Commutative Algebra and Algebraic Geometry

Chair: Eduardo Esteves (IMPA, Brasil)

Collaborators: Antonio Laface (Universidad de Concepción, Chile) - Leticia Brambila-Paz (CIMAT, México)

Session website

Talks

Jul25 15:00 ~ 15:30 Ideals of fat points: subhomaloidal types and symbolic powers
Aron Simis - Universidade Federal de Pernambuco, Brazil
15:40 ~ 16:10 Tannaka duality for algebraic groups
Alvaro Rittatore - CMAT-Udelar, Uruguay
16:20 ~ 16:50 A Surface Coming from an Arithmetic Question
Homero Gallegos-Ruiz - CONACyT - Universidad Autonoma de Zacatecas, Mexico
17:30 ~ 18:00 Algebras with a negation map
Louis Rowen - Bar-Ilan University, Israel
18:10 ~ 18:40 How to identify Milnor fibers of smoothings of quotient sigularities
Giancarlo Urzúa - Pontificia Universidad Católica de Chile, Chile
18:50 ~ 19:20 Shapes of the simplest minimal free resolutions in $\mathbb P^1\times \mathbb P^1$
Nicolás Botbol - Universidad de Buenos Aires - CONICET, Argentina
Jul26 15:00 ~ 15:30 Graded rings associated to valuations
Steven Dale Cutkosky - University of Missouri, USA
15:40 ~ 16:10 The Birational Geometry of $\overline{M}_{0,6}$
Martha Bernal - CONACyT - Universidad Autonoma de Zacatecas, Mexico
16:20 ~ 16:50 Bernstein--Sato polynomials for ideals in semigroup rings
Laura Felicia Matusevich - Texas A&M University, USA
17:30 ~ 18:00 Mod 2 cohomology rings of moduli stacks of Real vector bundles
Florent Schaffhauser - Universidad de los Andes, Colombia
18:10 ~ 18:40 The algebraic density property for affine toric varieties
Alvaro Liendo - Universidad de Talca, Chile

Posters

Rank two Vector bundles with first cohomology module generated by two elements and applications
Charles Aparecido Almeida, University of Campinas, Brazil
Intersections of Amoebas
Timo de Wolff, Texas A&M University, USA
Rational Harnack Curves on Toric Surfaces
Jorge Alberto Olarte Parra, Universidad de los Andes, Colombia
Orthogonal instanton bundles of higher rank on $\mathbb{P}^3$
Aline Vilela Andrade, University of Campinas, Brazil

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Session S03 - Hopf Algebras

Chair: Vladislav Kharchenko (UNAM, México)

Collaborators: Iván Angiono (Universidad Nacional de Córdoba & CONICET, Argentina)

Session website

Talks

Jul25 15:00 ~ 15:50 Nichols algebras of finite Gelfand-Kirillov dimension over abelian groups
Nicolás Andruskiewitsch - Universidad Nacional de Córdoba, Argentina
16:00 ~ 16:25 The classification of Nichols algebras
Leandro Vendramin - Universidad de Buenos Aires, Argentina
16:30 ~ 16:55 On rigidity of Nichols algebras
Mikhail Kochetov - Memorial University of Newfoundland, Canada
17:30 ~ 17:55 Partial actions of Hopf algebras: how it all started
Antonio Paques - Universidade Federal do Rio Grande do Sul, Brazil
18:00 ~ 18:25 The five-term exact sequence for Kac cohomology
César Galindo - Universidad de los Andes, Colombia
18:30 ~ 18:55 A d.g. Hopf algebra associated to a set theoretical solution of the Yang-Baxter equation and cohomology
Marco Farinati - Uniersidad de Buenos Aires, Argentina
Jul26 15:00 ~ 15:50 On Hopf orders and Kaplansky's sixth conjecture
Juan Cuadra - University of Almeria, Spain
16:00 ~ 16:25 Universal quantum groups associated to a pair of preregular forms
Chelsea Walton - Temple University, United States
16:30 ~ 16:55 Noncommutative discriminants via Poisson primes
Milen Yakimov - Louisiana State University, USA
17:30 ~ 17:55 Non-associative exponentials and the Baker–Campbell–Hausdorff formula
Jacob Mostovoy - CINVESTAV-IPN, Mexico
18:00 ~ 18:25 Pointed and copointed Hopf algebras over dihedral groups
Gastón Andrés García - Universidad Nacional de La Plata, Argentina
18:30 ~ 18:55 Tropical Hopf algebras and weak Hopf algebras
Louis Rowen - Bar-Ilan University, Israel

Posters

Representation of weak Hopf algebra arising from fusion double groupoids
Dirceu Bagio, Universidade Federal de Santa Maria, Brasil
Quantum Subgroups of Simple Twisted Quantum Groups at Roots of One
Javier Gutiérrez, Universidad Nacional de Córdoba, Argentina
Examples of finite-dimensional Hopf algebras with the dual Chevalley property.
Monique Müller, Universidad Nacional de Córdoba, Argentina
Hopf automorphisms and twisted extensions
Maria D. Vega, United States Military Academy, United States

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Session S04 - Operator Algebras

Chair: Severino Toscano do Rego Melo (USP, Brasil)

Session website

Talks

Jul25 15:00 ~ 15:50 Invariants of Operator Systems
Martin Argerami - University of Regina, Canada
16:00 ~ 16:50 Free path groupoid grading on Leavitt path algebras
Daniel Gonçalves - Universidade Federal de Santa Catarina - UFSC, Brasil
17:30 ~ 18:10 Globalizations of partial actions and Imprimitivity Theorems
Damián Ferraro - Universidad de la República, Uruguay
18:15 ~ 18:55 On the simplicity and $K$-theory of the $L^p$ operator algebras $\mathcal O^p(Q)$
Ma. Eugenia Rodríguez - Universidad de Buenos Aires, Argentina
Jul26 15:00 ~ 15:50 Nonarchimedean bornological algebras and their cyclic homology
Guillermo Cortiñas - Universidad de Buenos Aires, Argentina
16:00 ~ 16:50 Groupoid fibrations and their C*-algebras
Alcides Buss - Universidade Federal de Santa Catarina, Brazil

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Session S05 - Rings and Algebras

Chair: Iryna Kashuba (USP, Brasil)

Session website

Talks

Jul28 15:00 ~ 15:45 Octonions in low characteristics
Alberto Elduque - Universidad de Zaragoza, Spain
15:45 ~ 16:10 Polynomial identities, codimensions and a conjecture of Regev
Antonio Giambruno - Università di Palermo, Italy
16:10 ~ 16:35 Essencial idempotents in group algebras and coding theory
César Polcino Milies - Universidade de São Paulo, Brazil
16:35 ~ 17:00 Free groups in a normal subgroup of the field of fractions of a skew polynomial ring
Jairo Z. Goncalves - University of Sao Paulo, Brazil
17:30 ~ 17:55 Non-commutative algebraic geometry of semi-graded rings
Oswaldo Lezama - Universidad Nacional de Colombia, Bogotá, Colombia, Colombia
18:00 ~ 18:25 On finite generation and presentation of algebras
Adel Alahmadi - King Abdulaziz University, Saudi Arabia
18:30 ~ 18:55 Automorphisms of ideals of polynomial rings
Thiago Castilho de Mello - Universidade Federal de São Paulo, Brasil
Jul29 15:00 ~ 15:45 Finitely presented Lie and Jordan algebras
Efim Zelmanov - University of California, USA
15:45 ~ 16:10 Graded algebras and polynomial identities
Eli Aljadeff - Technion, Haifa, Israel
16:10 ~ 16:35 Color involutions of primitive graded rings.
Irina Sviridova - University of Brasilia, Brazil
16:35 ~ 17:00 Lie algebras of slow growth
Victor Petrogradsky - University of Brasilia, Brazil
17:30 ~ 17:55 On $D$ algebras.
Leonid Makar-Limanov - Wayne State University, USA
18:00 ~ 18:25 Partial actions and subshifts
Mikhailo Dokuchaev - Universidade de São Paulo, Brazil
18:30 ~ 18:55 Identities of finitely generated alternative and Malcev algebras
Ivan Shestakov - University of São Paulo , Brazil

Posters

Abelian Group Codes
Silvina Alejandra Alderete, Universidade Federal da Bahia , Salvador
Semiclean Rings
Elen Deise Barbosa, Universidade Federal da Bahia, Brasil
The Normalizer Property and its Relation with Extensions of Groups
Jacqueline C. Cintra, UFBA - Universidade Federal da Bahia, Brazil
Involution inverting gradings on matrix algebras
Thiago Castilho de Mello, Universidade Federal de São Paulo, Brasil
GENERATION OF SULLIVAN DECOMPOSABLE ALGEBRAS VIA CERTAIN PDEs
Samin Ingrith Ceron Bravo, Cauca University, Colombia
Anticommutativity of Symmetric and Skew-symmetric Elements under Generalized Oriented Involutions
Edward L. Tonucci, UFBA - Universidade Federal da Bahia, Brazil
$*$ - Clean Group Algebras
Gianfranco Osmar Manrique Portuguez, Universidade Federal Fluminense, Brasil
Irreducible components of varieties of Jordan algebras
María Eugenia Martin, Universidade de São Paulo, Brazil
Construction of $\text{Rota}^{m}\text{-Algebras}$ and $\text{Ballot}^{m}\text{-Algebras}$ from Associative Algebras with a Rota-Baxter morphism and a Rota-Baxter Operator of Weights Three and Two
Wilson Arley Martinez , Universidad del Cauca, Colombia
Clean rings and clean group rings
Danielson Melo Filho, Universidade Federal do Ceará, Brazil
On the max-plus algebra of non-negative exponent matrices
Makar Plakhotnyk, postdoctoral researcher (University of S\~ao Paulo), Brasil
Commutative power-associative nilalgebras and Albert's problem
Elkin Quintero Vanegas, IME - USP, Brasil
A study on clean rings
Laiz Valim da Rocha, Universidade Federal Fluminense, Brasil

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Session S06 - Algebraic Combinatorics

Chair: Ernesto Vallejo (UNAM, México)

Collaborators: Rosa Orellana (Dartmouth College, USA)

Session website

Talks

Jul25 15:00 ~ 15:25 Of antipodes and involutions
Bruce Sagan - Michigan State University, USA
16:00 ~ 16:25 Counting arithmetical structures of a graph and their sandpile groups.
Carlos Valencia Oleta - Mathematics department, Cinvestav-IPN, México
16:30 ~ 16:55 Cotas para la energía de Nikiforov sobre digrafos
Natalia Agudelo-Muñetón - Universidad de Antioquia - Medellín, Colombia
17:30 ~ 17:55 Lopsided amoebas and effective amoeba approximation
Laura Felicia Matusevich - Texas A&M University, USA
18:00 ~ 18:25 The Dehn--Sommerville Relations and the Catalan matroid
Nicole Yamzon - San Francisco State University, United States
Jul26 15:00 ~ 15:25 Integral hyperplane arrangements
Marcelo Aguiar - Cornell University, United States
15:30 ~ 15:55 The generalized lifting property of Bruhat intervals
Paolo Sentinelli - Universidad de Chile, Chile
16:00 ~ 16:25 A proof of the peak polynomial positivity conjecture
Pamela E. Harris - Williams College, United States
16:30 ~ 16:55 On trees with the same restriction of the chromatic symmetric function and solutions to the Prouhet-Tarry-Escott problem
José Aliste-Prieto - Universidad Andres Bello, Chile
17:30 ~ 17:55 Pieri rules for the Macdonald polynomials in superspace and the 6-vertex model
Luc Lapointe - Universidad de Talca, Chile
18:00 ~ 18:25 Irreducible characters of the symmetric group as symmetric functions
Mike Zabrocki - York University, Canada

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Session S07 - Finite Fields

Chair: Fernando Torres (Unicamp, Brasil)

Collaborators: Antonio Cafure (UNGS, Argentina) - Daniel Panario (Carleton University, Canada)

Session website

Talks

Jul28 15:00 ~ 15:25 Castle curves and codes
Fernando Torres - IMECC/UNICAMP, Brasil
15:30 ~ 15:55 The generalized Hamming weights of Castle codes
Wilson Olaya-León - Universidad Industrial de Santander, Colombia
16:00 ~ 16:25 On the second lowest Hamming weight of binary projetive Reed-Muller codes
Cicero Carvalho - Universidade Federal de Uberlandia, Brasil
16:30 ~ 16:55 Some remarks on the asymptotic behavior of cyclic AG-codes
María Chara - Instituto de Matemática Aplicada del Litoral (UNL-CONICET), Argentina
17:30 ~ 17:55 Estimates for polynomial systems defining irreducible smooth complete intersections
Guillermo Matera - Universidad Nacional de General Sarmiento and CONICET, Argentina
18:00 ~ 18:25 The distribution of points on families of curves over finite fields
Matilde Lalín - Université de Montréal, Canada
18:30 ~ 18:55 Finite Field Constructions of Combinatorial Arrays
Lucia Moura - University of Ottawa, Canada
Jul29 15:00 ~ 15:25 Galois geometries and Random network coding
Leo Storme - Ghent University, Belgium
15:30 ~ 15:55 Weierstrass semigroup and Automorphism group of the curves $X_{n,r}$
Guilherme Tizziotti - Universidade Federal de Uberlandia, Brasil
16:00 ~ 16:25 Asymptotically good 4-quasi transitive AG-codes over prime fields
Ricardo A. Podestá - Universidad Nacional de Córdoba, Argentina
16:30 ~ 16:55 A problem of Beelen, Garcia and Stichtenoth on an Artin-Schreier tower
Horacio Navarro - IMAL, Argentina
17:30 ~ 17:55 Arithmetic Mirror Symmetry of K3 Surfaces and Hypergeometric Functions.
Adriana Salerno - Bates College, USA
18:00 ~ 18:25 Estimates on the average cardinality of the value set of general families of univariate polynomials over a finite field
Melina Privitelli - Instituto de Ciencias, UNGS, Argentina
18:30 ~ 18:55 Iterating Redei Functions over Finite Fields
Daniel Panario - Carleton University, Canada

Posters

On the Densest Lattices from Number Fields and Division Algebras
Carina Alves, São Paulo State Universtiy - UNESP - Rio Claro, Brasil
New constructions of algebraic lattices
Antonio Aparecido de Andrade, São Paulo State University at São José do Rio Preto, Brasil
Gr\"obner bases for Generalized Hermitian codes.
Federico Fornasiero, UFPE (universidade federal do Pernambuco), Brasile
Similarity between the algebraic structure associated with projective space and combinatorial design via Hasse diagram
Leandro Bezzerra de Lima, CPAq/UFMS - FEEC/UNICAMP, Brasil
Projective Nested Cartesian Codes
Victor Gonzalo Lopez Neumann, Universidade Federal de Uberlândia, Brasil

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Session S08 - Lie Groups and Representations

Chair: Vyacheslav Futorny (USP, Brasil)

Collaborators: Carina Boyalian (Universidad Nacional de Córdoba & CONICET, Argentina)

Session website

Talks

Jul28 15:00 ~ 15:40 2-representations of Soergel bimodules
Volodymyr Mazorchuk - Uppsala University, Sweden
15:40 ~ 16:20 Representation ring of Levi subgroups versus cohomology ring of flag varieties
Shrawan Kumar - University of North Carolina, Chapel Hill, USA
16:20 ~ 17:00 On the Demazure Type Structure of Graded Limits of Representations of Quantum Affine Algebras
Adriano Moura - University of Campinas, Brazil
17:30 ~ 18:10 Positivity of parabolic Kazhdan-Lusztig polynomials
Nicolas Libedinsky - Universidad de Chile, Chile
18:10 ~ 18:30 Tensor products of minimal affinizations in type $A$
Fernanda Pereira - Aeronautics Institute of Technology, Brazil
18:30 ~ 18:50 K-groups in the theory of symmetric spaces
Wend Werner - Münster University, Germany
Jul29 15:00 ~ 15:40 Belavin-Drinfeld Lie bialgebras and quantum groups (Galois cohomology considerations)
Arturo Pianzola - CAECE-Alberta,
15:40 ~ 16:20 cohomology of finite, algebraic, and quantum groups
Leonard Scott - The University of Virginia, USA
18:10 ~ 18:30 Gröbner bases for local Weyl modules for generalized current $\mathfrak{sl}_2$-algebras
Angelo Bianchi - Federal University of São Paulo - UNIFESP, Brazil
18:30 ~ 18:50 Lie subalgebras of the matrix quantum pseudo differential operators
Karina Batistelli - CIEM- Famaf, Argentina

Posters

Equidimensionality of some Gelfand-Tsetlin varieties
Germán Benitez Monsalve, Instituto de Matemática e Estatística (IME) / Universidade de São Paulo (USP), Brazil
$G_2$ holonomy manifolds are superconformal.
Lázaro Orlando Rodríguez Díaz, University of Campinas, Brazil
Structure and Representations of Diferenttial Operators on the Torus
João Schwarz, USP, Brazil
Chiral De Rham Complex Structure for Witt algebras
André Eduardo Zaidan, IME - USP, Brazil

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Session S09 - Logic and Universal Algebra

Chair: Alf Onshuus (Universidad de los Andes, Colombia)

Collaborators: Manuela Busaniche (Universidad Nacional del Litoral & CONICET, Argentina)

Session website

Talks

Jul25 15:00 ~ 15:50 Monadic Gödel algebras are functional
Xavier Caicedo - Universidad de los Andes,
16:00 ~ 16:25 Model theoretic properties of pseudo real closed fields.
Samaria Montenegro - Universidad de los Andes/Universidad de Costa Rica, Costa Rica
16:30 ~ 16:55 A new setting for duals of canonical extensions of lattices
Miroslav Haviar - Matej Bel University, Eslovaquia
17:30 ~ 18:20 MV-álgebras separables.
Matias Menni - Universidad de la Plata, Argentina
18:30 ~ 18:55 Fuzzy Neighborhood Semantics
Ricardo Oscar Rodriguez - Departamento de Computación. FCEyN. Universidad de Buenos Aires, Argentina
Jul26 15:00 ~ 15:50 MV-álgebras monádicas y l-grupos monádicos
J. Patricio Díaz Varela - Universidad Nacional del Sur-Bahía Blanca, Argentina
16:00 ~ 16:25 On hemi-implicative semilattices
Hernán J. San Martín - CONICET y Facultad de Ciencias Exactas, UNLP., Argentima
16:30 ~ 16:55 Epic subalgebras and primitive functions
Miguel Campercholi - FAMAF-Córdoba, Argentina
17:30 ~ 18:20 Stonean residuated lattices
Roberto Cignoli - Universidad de Buenos Aires, Argentina
18:30 ~ 18:55 An optimal axiomatization of the set of central elements
Mariana Badano - FaMAF-UNC, Argentina

Posters

Límites inversos de estructuras compactas
Santiago Pinzon, Universidad de los Andes, Colombia
The ring $\prod_{n=1}^\infty F_{p_i}$
Maria Isabel Sanchez Muniz, City College of New York, United States

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Session S10 - Homological Methods

Chair: Paul Bressler (Universidad de los Andes, Colombia)

Collaborators: Erik Backelin (Universidad de los Ande, Colombia)

Session website

Talks

Jul28 15:00 ~ 15:30 Nearest Points on Toric Varieties
Bernd Sturmfels - UC Berkeley, USA
15:30 ~ 16:00 Codimension two $A$-hypergeometric systems
Laura Felicia Matusevich - Texas A&M University, USA
16:00 ~ 16:30 On Unimodality of Hilbert Function Graded Algebras
Hema Srinivasan - University of Missouri, USA
16:30 ~ 17:00 The syzygies of some thickenings of determinantal varieties
Claudiu Raicu - University of Notre Dame, USA
17:30 ~ 18:00 Title: Invariant theory of Milnor algebras
Jarod Alper - Australian National University, Australia
18:00 ~ 18:30 Relative Igusa-Todorov functions
Marcelo Lanzilotta - Universidad de la República, Uruguay
18:30 ~ 19:00 Applications of volume to commutative algebra
Steven Dale Cutkosky - University of Missouri, USA
Jul29 15:00 ~ 15:30 Nonsymmetric operads, associative algebras, and the Lagrange inversion
Vladimir Dotsenko - Trinity College Dublin, Ireland
15:30 ~ 16:00 Hochschild homology and cohomology of down-up algebras
Andrea Solotar - Universidad de Buenos Aires- IMAS-Conicet, Argentina
16:00 ~ 16:30 Homología cíclica de productos cruzados débiles (Cyclic homology of weak crossed products)
Jorge Alberto Guccione - Universidad de Buenos Aires, Argentina
16:30 ~ 17:00 Isomorphism conjectures with proper coefficients
Eugenia Ellis - Universidad de la República, Uruguay
17:30 ~ 18:00 BV-algebra Structures and Hochschild (Co)homology
Diego Duarte Vogel - Universidad de los Andes, Colombia

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Session S11 - Representations of Algebras

Chair: María Julia Redondo (Universidad Nacional del Sur & CONICET, Argentina)

Session website

Talks

Jul25 15:00 ~ 15:50 Partial relation extensions
Ibrahim Assem - Université de Sherbrooke, Québec, Canada
16:00 ~ 16:50 Split $t$-structures and torsion pairs in hereditary categories
Sonia Trepode - Universidad Nacional de Mar del Plata, Argentina
17:30 ~ 18:10 On the representation theory of the partition algebra
Rosa Orellana - Dartmouth College, USA
18:15 ~ 18:55 Gerstenhaber bracket via arbitrary resolution
Yury Volkov - Universidade de Sao Paulo, Brazil
Jul26 15:00 ~ 15:50 Maximal Green Sequences
Kiyoshi Igusa - Brandeis University, USA
16:00 ~ 16:50 A little bit of extra functoriality for Ext and the computation of the Gerstenhaber bracket
Mariano Suárez-Álvarez - Universidad de Buenos Aires — CONICET, Argentina
17:30 ~ 17:50 The blob algebra in positive characteristic and the $p$-Kazhdan-Lusztig polynomials.
David Plaza - Universidad de Talca, Chile
18:00 ~ 18:20 About sums of compositions of irreducible morphisms
Nicolás Llodra Schat - Universidad Nacional de Mar del Plata, Argentina

Posters

Representation of Twisted Tensor Products
Jack Arce Flores, Pontificia Universidad Católica del Perú-PUCP, Perú
Análisis del espectro de Grafos Jahangir
Wilsmar dos Santos, Cerp del Litoral, Uruguay
Hochshild homology and cohomology of super Jordan plane
Sebastián Gustavo Reca, Universidad de Buenos Aires, Argentina

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Session S12 - Group Theory

Chair: Andrés Navas (Universidad de Santiago de Chile, Chile)

Collaborators: Nancy Guelman (Universidad de la República, Uruguay) - Leandro Vendramin (Universidad de Buenos Aires & CONICET, Argentina)

Session website

Talks

Jul28 15:00 ~ 15:25 The relative stable category
Jon Frederick Carlson - University of Georgia, USA
15:30 ~ 15:55 Groups of circle homeomorphisms with invariant laminations.
Juan Alonso - Universidad de la República, Uruguay
16:00 ~ 16:25 Simple groups of intermediate growth
Volodymyr Nekrashevych - Texas A&M University, USA
16:30 ~ 16:55 Large scale geometry of Heintze groups
Matias Carrasco - Universidad de la República, Uruguay
17:30 ~ 18:20 Word maps on finite simple groups
Eamonn O'Brien - University of Auckland, New Zealand
18:30 ~ 18:55 Flexibility of representations of $\pi_1(\Sigma)$ into the space of orentation preserving homeomorphisms or the line.
Joaquín Brum Ocaso - Universidad de la República, Urguay
Jul29 15:00 ~ 15:25 Towards algebraic Nielsen-Thurston classification for braids
Matthieu Calvez - Universidad de Santiago, Chile
15:30 ~ 15:55 Circular orderings on the free group
Cristobal Rivas - Universidad de Santiago de Chile, Chile
16:00 ~ 16:25 On set-theoretic solutions to the Yang-Baxter equation
Victoria Lebed - University of Nantes, France
16:30 ~ 16:55 Cryptosystems using subgroup distortion
Delaram Kahrobaei - City University of New York: Graduate Center (CS), NYCCT (Math), USA
17:30 ~ 18:20 Connectedness of generating sets for finite groups
Marston Conder - University of Auckland, Nueva Zelanda
18:30 ~ 19:20 Multifraction reduction in Artin-Tits groups
Patrick Dehornoy - Université de Caen, France

Posters

Braces, generalizations and applications to the Yang-Baxter equation
Leandro Guarnieri, Universidad de Buenos Aires, Argentina
Pro-$p$ Completions of Poincare Duality Groups
Igor Lima, IMTEC/UFG - Regional Catalão, Brasil

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Session S13 - Number Theory

Chair: Roberto Miatello (Universidad Nacional de Córdoba & CONICET, Argentina)

Collaborators: Gonzalo Tornaria (Universidad de la República, Uruguay)

Session website

Talks

Jul25 15:00 ~ 15:40 Sharp lower bounds for regulators of small-degree number fields
Eduardo Friedman - Universidad de Chile, Santiago
15:50 ~ 16:20 Waldspurger formulas for Hilbert modular forms
Nicolás Sirolli - Universidad de Buenos Aires, Argentina
16:25 ~ 16:55 The Mahler measure of elliptic curves
Matilde Lalín - Université de Montréal, Canada
17:30 ~ 18:00 Heegner point constructions
Daniel Kohen - Universidad de Buenos Aires- IMAS, Argentina
18:05 ~ 18:35 Overconvergent Eichler-Shimura isomorphisms for Shimura curves
Daniel Barrera Salazar - CRM, Montreal, Canada
Jul26 15:00 ~ 15:40 La criba de Eratóstenes en menos espacio
Harald Helfgott - Georg-August Universitaet Goettingen/CNRS, Alemania/Francia
15:50 ~ 16:20 Bounding the argument of zeta on the Riemann hypothesis
Emanuel Carneiro - IMPA, Brazil
16:25 ~ 16:55 Equidistribución $p$-ádica de órbitas de Hecke y aplicaciones diofantinas
Ricardo Menares - Pontificia Universidad Católica de Valparaíso, Chile
17:30 ~ 18:00 CM-points on straight lines
Amalia Pizarro Madariaga - Universidad de Valparaíso, Chile
18:10 ~ 18:40 On the paramodular conjecture
Gonzalo Tornaría - Universidad de la República, Uruguay

Posters

Conjuntos de Sidon en intervalos
Brady Miliwska Ali Medina, Universidad Nacional de San Agustín , Perú
Propiedades de las $p$-extensiones elementales abelianas sobre $\mathbb{F}_{p^{r}}(T)$
Jonny Fernando Barreto Castañeda , Centro de Investigación y de Estudios Avanzados del I.P.N., México
Primos de Wilson, Mersenne y Wieferich en el anillo $\mathbb{F}_{q}[T]$
Jonny Fernando Barreto Castañeda , Centro de Investigación y de Estudios Avanzados del I.P.N., México
Formas Cuadráticas y el teorema de los 15
Juanita Duque, Universidad de los Andes, Colombia

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