Wed | Dec 07 | 16:30 | Federico Scavia | Degenerate fourfold Massey products over arbitrary fields | |

Wed | Nov 23 | 16:30 | Stephen Scully | On the dimensions of quadratic forms isotropic over the function field of a quadric | |

Wed | Nov 16 | 16:30 | Barry Demba | Degree 3 relative invariant for unitary involutions | |

Wed | Nov 09 | 16:30 | Maxim Zhykhovich | The J-invariant of algebras with orthogonal involution. | |

Wed | Oct 19 | 15:30 | Yashonidhi Pandey | On Bruhat-Tits theory over a higher dimensional base | |

Wed | Oct 12 | 15:30 | Benjamin Martin | Geometric invariant theory for reductive groups over non-algebraically closed fields | |

Wed | Sep 28 | 15:30 | Karim Johannes Becher | Fields with bounded Brauer 2-torsion index | |

Wed | Jul 13 | 15:30 | Goncalo Tabuada | TBA | |

Wed | Jul 06 | 15:30 | Danny Ofek | TBA | |

Wed | Jun 29 | 15:30 | Ido Efrat | Steinberg Relations for Massey Products | |

Wed | Jun 22 | 15:30 | Max Lieblich | Murphy's Law for gerbes | |

Wed | Jun 15 | 15:30 | Benjamin Antieau | The K-theory of Z/p^n | |

Wed | Jun 08 | 15:30 | Eliahu Matzri | On the symbol length of symbols in Galois cohomology. | |

Wed | Jun 01 | 15:30 | Aravind Asok | On P^1-stabilization in unstable motivic homotopy theory | |

Wed | May 25 | 15:30 | Fatma Kader Bingöl | On the 4-torsion part of the Brauer group | |

Wed | May 18 | 15:30 | Benjamin Antieau | Benjamin Antieu's talk is postponed to June 15 | |

Wed | Apr 06 | 15:30 | Holger Petersson | Integral octonions: history and perspectives | |

Wed | Mar 30 | 15:30 | Claudio Quadrelli | The Bogomolov-Positselski conjecture for maximal pro-p Galois groups | |

Wed | Mar 23 | 15:30 | Nicole Lemire | Codimension 2 cycles of classifying spaces of low-dimensional algebraic tori | |

Wed | Mar 16 | 15:30 | Maneesh Thakur | The cyclicity problem for Albert division algebras | |

Wed | Mar 09 | 16:30 | Fabio Tanania | On the motivic cohomology of the Nisnevich classifying space of PGL_n | |

Wed | Mar 02 | 16:30 | Susanne Pumpluen | Nonassociative algebras obtained from skew polynomials and their applications | |

Wed | Feb 23 | 16:30 | Mathieu Florence | Equivariant Witt vector bundles | |

Wed | Feb 16 | 16:30 | Alexandra Utiralova | Harish-Chandra bimodules in complex rank | |

Wed | Feb 09 | 16:30 | Roman Fedorov | On the purity conjecture of Nisnevich for torsors under reductive group schemes | |

Wed | Feb 02 | 16:30 | Alexander S. Sivatski | Nonstandard quadratic forms over rational function fields | |

Wed | Jan 26 | 16:30 | Alberto Elduque | Gradings on simple Lie algebras | |

Wed | Jan 19 | 16:30 | Asher Auel | Brauer classes split by genus one curves | |

Wed | Dec 15 | 16:30 | Olivier Wittenberg | Massey products in the Galois cohomology of number fields | |

Wed | Dec 08 | 16:30 | Michael Bate | Overgroups of regular unipotent elements in algebraic groups | |

Wed | Dec 01 | 16:30 | Erhard Neher | Quadratic forms over semilocal rings | |

Wed | Nov 24 | 16:30 | Joshua Ruiter | Abstract homomorphisms of some special unitary groups | |

Wed | Nov 17 | 16:30 | Alena Pirutka | Quadrics and computation of the unramified Brauer group | |

Wed | Nov 10 | 16:30 | Maria Yakerson | Twisted K-theory in motivic homotopy theory | |

Wed | Oct 27 | 15:30 | Jean-Louis Colliot-Thelene | Quadratic forms and stable rationality II | |

Wed | Oct 20 | 15:30 | Jean-Louis Colliot-Thelene | Quadratic forms and stable rationality I | |

Wed | Oct 13 | 15:30 | Eva Bayer-Fluckiger | Isometries of lattices and automorphisms of K3 surfaces | |

Wed | Oct 06 | 15:30 | Simon Pepin Lehalleur | Quadratic enumerative geometry and the Deligne-Milnor formula | |

Wed | Sep 29 | 15:30 | Hanspeter Kraft | Small $G$-varieties (joint work with Andriy Regeta and Susanna Zimmermann) | |

Wed | Sep 22 | 15:30 | Nikita Karpenko | Yagita’s counter-examples and beyond | |

Wed | Jul 21 | 15:30 | David Saltman | Lifting in Mixed Characteristics | |

Wed | Jul 14 | 15:30 | Seidon Alsaody | TBA | |

Wed | Jul 07 | 15:30 | Stefan Schreieder | Refined unramified cohomology of schemes | |

Wed | Jun 23 | 15:30 | Anand Sawant | Near-rationality properties of norm varieties | |

Wed | Jun 16 | 15:30 | Ning Guo | The Grothendieck–Serre conjecture over valuation rings | |

Wed | Jun 09 | 15:30 | Zev Rosengarten | Rigidity and Unirational groups | |

Wed | Jun 02 | 15:30 | Jan Minac and Tung T. Nguyen | A panoramic view of absolute Galois groups | |

Wed | May 26 | 15:30 | Alexander Vishik | Torsion Motives | |

Wed | May 19 | 15:30 | Susanna Zimmermann | Algebraic groups acting birationally on surfaces over a perfect field | |

Wed | May 12 | 15:30 | Robert Guralnick | Generic Stabilizers for Simple Algebraic Groups | |

Wed | May 05 | 15:30 | Suresh Venapally | Degree three cohomology groups of function fields of curves over number fields | |

Wed | Apr 14 | 15:30 | Olivier Haution | The cobordism ring of algebraic involutions | |

Wed | Apr 07 | 15:30 | Kelly McKinnie | Common Splitting Fields of Symbol Algebras | |

Wed | Mar 31 | 15:30 | Andrei Lavrenov | Morava motives of projective quadrics | |

Wed | Mar 24 | 15:30 | Michel Brion | Homomorphisms of algebraic groups: representability and rigidity | |

Wed | Mar 17 | 15:30 | Matthieu Romagny | Smooth affine group schemes over the dual numbers | |

Wed | Mar 10 | 16:30 | Vladimir Popov | Root systems and root lattices in number fields | |

Wed | Mar 03 | 16:30 | Olivier Benoist | Sums of squares in local fields | |

Wed | Feb 24 | 16:30 | Julia Hartmann | Local-global principles for constant reductive groups over arithmetic function fields | |

Wed | Feb 17 | 16:30 | Ivan Panin | Rationally isotropic quadratic spaces are locally isotropic (mixed characteristic case) | |

Wed | Feb 10 | 16:30 | Patrick Brosnan | Fixed Points in Toroidal Compactifications and Essential Dimension of Covers | |

Wed | Feb 03 | 16:30 | Giancarlo Lucchini-Arteche | Local-global principles for homogeneous spaces over some two-dimensional geometric global fields | |

Wed | Jan 27 | 16:30 | Alexander Kuznetsov | Exceptional collection of vector bundles on F4/P4 | |

Wed | Jan 20 | 16:30 | Uriya First | The Grothendieck--Serre conjecture for classical groups in low dimensions | |

Mon | Dec 14 | 16:00 | Eric Primosic | Motivic cohomology and infinitesimal group schemes | |

Mon | Dec 07 | 16:00 | Pavel Sechin | Morava K-theory pure motives with applications to quadrics | |

Mon | Nov 30 | 16:00 | Alex Wertheim | Degree One Milnor K-Invariants of Groups of Multiplicative Type | |

Mon | Nov 23 | 16:00 | Victor Petrov | Isotropy of Tits construction | |

Mon | Nov 16 | 16:00 | Kęstutis Česnavičius | Grothendieck–Serre in the split unramified case | |

Mon | Nov 09 | 16:00 | Lucy Moser-Jauslin | Forms of almost homogeneous varieties | |

Mon | Nov 02 | 16:00 | Anastasia Stavrova | Torsors of isotropic reductive groups over Laurent polynomials | |

Mon | Oct 26 | 15:00 | Cameron Ruether | Injections from Kronecker Products and the Cohomological Invariants of Half-Spin | |

Mon | Oct 19 | 15:00 | Cyril Demarche | Splitting families in Galois cohomology | |

Mon | Oct 12 | 15:00 | Alexander Merkurjev | Operations in connective K-theory | |

Mon | Oct 05 | 15:00 | Igor Rapinchuk | Algebraic groups with good reduction | |

Mon | Sep 28 | 15:00 | Alexandre Lourdeaux | Brauer invariants of linear algebraic groups | |

Mon | Sep 21 | 15:00 | Mikhail Borovoi | Galois cohomology of real reductive groups | |

Mon | Sep 14 | 15:00 | Raman Parimala | A Hasse principle for simply connected groups | |

Fri | Jul 10 | 15:00 | Benedict Williams | Algebras requiring many generators | |

Fri | Jul 03 | 15:00 | Maurice Chayet | E8 and a new class of commutative non-associative algebras with a continuous Pierce Spectrum | |

Fri | Jun 26 | 15:00 | Burt Totaro | Cohomological invariants in positive characteristic | |

Fri | Jun 19 | 15:00 | Maike Gruchot | Variations of G-complete reducibility | |

Fri | Jun 12 | 15:00 | Roberto Pirisi | Brauer groups of moduli of hyperelliptic curves, via cohomological invariants | |

Fri | Jun 05 | 15:00 | Danny Krashen | Field patching, local-global principles and rationality | |

Fri | May 29 | 15:00 | Federico Scavia | Codimension two cycles on classifying stacks of algebraic tori | |

Fri | May 22 | 15:00 | Alexander Duncan | Cohomological invariants and separable algebras | |

Fri | May 15 | 15:00 | David Stewart | Irreducible modules for pseudo-reductive groups | |