Planning

Monday, June 13, 2022

Time Event (+)
09:00 - 12:30 Welcome opening  
14:00 - 15:00 Alexander HULPKE 1 - Computational group theory, cohomology of groups and topological methods  
15:15 - 16:15 Alexander HULPKE 2 - Computational group theory, cohomology of groups and topological methods  
16:30 - 17:30 Renaud COULANGEON 1 - Lattices, Perfects lattices, Voronoi reduction theory, modular forms, computations of isometries and automorphisms  

Tuesday, June 14, 2022

Time Event (+)
09:00 - 10:00 Renaud COULANGEON 2 - Lattices, Perfects lattices, Voronoi reduction theory, modular forms, computations of isometries and automorphisms  
10:15 - 11:15 Graham ELLIS 1 - Computational group theory, cohomology of groups and topological methods  
11:30 - 12:30 Graham ELLIS 2 - Computational group theory, cohomology of groups and topological methods  
12:30 - 14:00 Lunch  
14:00 - 15:00 Gabriele NEBE 1 (zoom) - Lattices, Perfects lattices, Voronoi reduction theory, modular forms, computations of isometries and automorphisms  
15:15 - 16:15 Alexander HULPKE 3 - Computational group theory, cohomology of groups and topological methods  
16:30 - 17:30 Graham ELLIS 3 - Computational group theory, cohomology of groups and topological methods  

Wednesday, June 15, 2022

Time Event (+)
09:00 - 10:45 Bill ALLOMBERT - Introduction to PARI/GP (with 'laptop classroom'; intro+practical work)  
11:00 - 12:30 Herbert GANGL - Illustrating the mathematics of COGENT: A hyperbolic angle  
12:30 - 14:00 Lunch  
14:00 - 15:00 Bettina EICK 1 - Computational group theory, cohomology of groups and topological methods  
15:15 - 16:15 Bettina EICK 2 - Computational group theory, cohomology of groups and topological methods  
16:30 - 17:30 Graham ELLIS 4 - Computational group theory, cohomology of groups and topological methods  

Thursday, June 16, 2022

Time Event (+)
09:00 - 10:00 Bettina EICK 3 - Computational group theory, cohomology of groups and topological methods  
10:15 - 11:15 Bettina EICK 4 - Computational group theory, cohomology of groups and topological methods  
11:30 - 12:30 Alexander HULPKE 4 - Computational group theory, cohomology of groups and topological methods  
12:30 - 14:00 Lunch  
14:00 - 15:00 Phong NGUYEN 1 - Recent progress on lattices's computations  
15:15 - 16:15 Phong NGUYEN 2 - Recent progress on lattices's computations  
16:30 - 17:30 Alexander HULPKE 5 - Computational group theory, cohomology of groups and topological methods  

Friday, June 17, 2022

Time Event (+)
09:00 - 10:00 Bettina EICK 5 - Computational group theory, cohomology of groups and topological methods  
10:15 - 11:15 Graham ELLIS 5 - Computational group theory, cohomology of groups and topological methods  
11:30 - 12:30 Haluk SENGUN 1 - Cohomology of arithmetic groups and number theory: geometric, asymptotic and computational aspects  

Saturday, June 18, 2022

Time Event (+)

Sunday, June 19, 2022

Time Event (+)

Monday, June 20, 2022

Time Event (+)
10:00 - 12:30 Welcome opening  
14:00 - 15:00 Haluk SENGUN 2 (zoom) - Cohomology of arithmetic groups and number theory: geometric, asymptotic and computational aspects  
15:15 - 16:15 Paul GUNNELLS 1 (zoom, Philippe on-site) - Cohomology of arithmetic groups and number theory: geometric, asymptotic and computational aspects  
16:30 - 17:30 Paul GUNNELLS 2 (zoom) - Cohomology of arithmetic groups and number theory: geometric, asymptotic and computational aspects  

Tuesday, June 21, 2022

Time Event (+)
09:00 - 10:00 Aurel PAGE 1 - Cohomology of arithmetic groups and number theory: geometric, asymptotic and computational aspects  
10:15 - 11:15 Aurel PAGE 2 - Cohomology of arithmetic groups and number theory: geometric, asymptotic and computational aspects  
11:30 - 12:30 Peter PATZT 1 - High dimensional cohomology of SL_n(Z) and its principal congruence subgroups  
12:30 - 14:00 Lunch  
14:00 - 15:00 Paul GUNNELLS 3 (zoom, Philippe on-site) - Cohomology of arithmetic groups and number theory: geometric, asymptotic and computational aspects  
15:15 - 16:15 Jennifer WILSON 1 (zoom, Peter on-site) - High dimensional cohomology of SL_n(Z) and its principal congruence subgroups  
16:30 - 17:30 Jennifer WILSON 2 (zoom, Peter on-site) - High dimensional cohomology of SL_n(Z) and its principal congruence subgroups  

Wednesday, June 22, 2022

Time Event (+)
09:00 - 10:00 Peter PATZT 2 (exercice and Q&A session) - High dimensional cohomology of SL_n(Z) and its principal congruence subgroups  
10:15 - 11:15 Peter PATZT 2 (exercice and Q&A session) - High dimensional cohomology of SL_n(Z) and its principal congruence subgroups  
11:30 - 12:30 Philippe ELBAZ 1 - Cohomology of arithmetic groups and number theory: geometric, asymptotic and computational aspects  
12:30 - 14:00 Dinner  
14:00 - 15:00 Paul GUNNELLS 4 (zoom, Philippe on-site) - Cohomology of arithmetic groups and number theory: geometric, asymptotic and computational aspects  
15:15 - 16:15 Philippe ELBAZ 2 - Cohomology of arithmetic groups and number theory: geometric, asymptotic and computational aspects  
16:30 - 17:30 Jennifer WILSON 3 (zoom, Peter on-site) - High dimensional cohomology of SL_n(Z) and its principal congruence subgroups  

Thursday, June 23, 2022

Time Event (+)
09:00 - 10:00 Peter PATZT 3 - High dimensional cohomology of SL_n(Z) and its principal congruence subgroups  
10:15 - 11:15 Philippe ELBAZ 3 - Cohomology of arithmetic groups and number theory: geometric, asymptotic and computational aspects  
11:30 - 12:30 Philippe ELBAZ 4 - Cohomology of arithmetic groups and number theory: geometric, asymptotic and computational aspects  
12:30 - 14:00 Lunch  
14:00 - 15:00 Paul GUNNELLS 5 (zoom, Philippe on-site) - Cohomology of arithmetic groups and number theory: geometric, asymptotic and computational aspects  
15:15 - 16:15 Peter PATZT 4 (Jenny present on zoom) - High dimensional cohomology of SL_n(Z) and its principal congruence subgroups  
16:30 - 17:30 Peter PATZT / Jennifer WILSON (exercice and Q&A session) - High dimensional cohomology of SL_n(Z) and its principal congruence subgroups  

Friday, June 24, 2022

Time Event (+)
09:30 - 11:00 Philippe ELBAZ/Paul GUNNELLS - Further directions and open problems  
11:15 - 12:45 Peter PATZT/Jennifer WILSON - Further directions and open problems  

Saturday, June 25, 2022

Time Event (+)

Sunday, June 26, 2022

Time Event (+)

Monday, June 27, 2022

Time Event (+)
15:00 - 16:00 Richard Hill - Fractional weight modular forms * joint session with COGENT regular seminar * (zoom)  
16:00 - 17:00 Michael Lipnowski * joint session with COGENT regular seminar * (zoom) - TBA  

Tuesday, June 28, 2022

Time Event (+)
09:30 - 10:30 Haowen Zhang - Brauer-Manin and cohomological obstructions to rational points  
11:00 - 12:00 Alexander Rahm - Verification of the Quillen conjecture in the rank 2 imaginary quadratic case  
12:00 - 14:00 Lunch  
14:00 - 15:00 Petru Constantinescu - On the distribution of modular symbols and cohomology classes  
15:15 - 16:15 Angelica Babei - A family of $\phi$-congruence subgroups of the modular group (zoom)  
16:15 - 17:15 Zachary Himes - On not the rational dualizing module for $\text{Aut}(F_n)$ (zoom)  

Wednesday, June 29, 2022

Time Event (+)
09:30 - 10:30 Lewis Combes - Computing Selmer groups attached to mod p Galois representations  
11:00 - 12:00 Oussama Hamza - Hilbert series and mild groups  
12:00 - 14:00 Lunch  
14:00 - 15:00 Kieran Child - Computation of weight 1 modular forms  
15:15 - 15:45 Kalani Thalagoda - Bianchi modular forms (zoom)  
16:00 - 17:00 Calista Bernard - Applications of twisted homology operations for E_n-algebras (zoom)  

Thursday, June 30, 2022

Time Event (+)
09:30 - 10:30 Tobias Braun - Orthogonal Determinants  
11:00 - 12:00 Leonie Scheeren - The Voronoi Algorithm for calculating unit groups  
12:00 - 14:00 Lunch  
14:00 - 15:00 Tobias Moede - Coclass theory for nilpotent associative algebras (zoom)  
15:00 - 16:00 Benjamin Brück - High-dimensional rational cohomology of $\operatorname{SL}_n(\mathbb{Z})$ and $\operatorname{Sp}_{2n}(\mathbb{Z})$ (zoom)  
16:00 - 17:00 Andrew Putman - The Steinberg representation is irreducible (zoom)  

Friday, July 1, 2022

Time Event (+)
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