AGRA V
a school on Arithmetic, Groups and Analysis
July 27 to August 7, 2026
Popayán, Colombia
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Summary. Objectives
The AGRA series of summer schools (Santiago de Chile, 2012; Cusco, 2015; Córdoba, 2018; online, 2021/Cabo Frio, 2022) has as its goal to foster the development of number theory in Latin America: it provides a formative experience for young researchers, and it also helps bring together more senior or mid-career mathematicians working in the field.
Number theory is a field that welcomes and prospers on ideas and techniques from many branches of mathematics, and nourishes them in turn. Topics in previous AGRA schools have included primality and divisibility, additive combinatorics, diophantine geometry, arithmetic groups, expander graphs, modular forms, L-functions, algebraic groups, ergodic theory, harmonic analysis in number theory, higher-order Fourier analysis, asymptotic group theory, Galois representations, homology and cohomology in group theory, lattice surfaces and the geometry of moduli spaces, with subjects often being developed across several years.
For prospective participants
For prospective participants
While graduate students and young researchers will be the main intended audience of the school, all interested researchers and students are welcome to participate. Our goal is to fully fund all participants from Latin America, after a merit-based selection.
Participants from elsewhere (including developed countries) are encouraged to find funding for travel from their own institutions; we will attempt to cover their local costs.
The language of the school will be Spanish.
People of all genders are encouraged to apply. All will be treated equally.
Grants
Grants
A limited number of grants are available to support the attendance of selected participants, with priority given to participants from developing countries. There is no registration fee.
Organisers
Harald Helfgott (CNRS, France).
Elisa Lorenzo García (Aix-Marseille Université, France).
Ariel Pacetti (Universidade de Aveiro, Portugal).
Gonzalo Tornaría (Universidad de la República, Uruguay).
Scientific Committee
María Chara (CONICET, Argentina & Universidad de la República, Uruguay).
Michael Harris (Columbia University, US).
Harald Helfgott (CNRS, France).
Elisa Lorenzo García (Aix-Marseille Université).
Ariel Pacetti (Universidade de Aveiro, Portugal).
Fernando Rodríguez Villegas (ICTP, Italy).
Cecilia Salgado (University of Groningen, The Netherlands).
Lola Thompson (Utrecht Univeristy, The Netherlands).
Gonzalo Tornaría (Universidad de la República, Uruguay).
Local and national organisers
Jairo Bravo Grijalba (Universidad del Cauca, Colombia).
John H. Castillo (Universidad de Nariño, Colombia)
Guillermo Mantilla (Universidad Nacional de Colombia-Medellín, Colombia).
Plinio Murillo (Universidade Federal Fluminense, Brazil)
Carlos Alberto Trujillo Solarte (Universidad del Cauca, Colombia).
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