torsor.org

talks & activity

talks & activity

  • 14 Sep 2026
    Some approaches to agentic AI in mathematical research, reading and writing
    Algebra and Algebraic Geometry Seminar, University of British Columbia
    event
  • 13 May 2026
    Algebraic perspectives on modules over vertex operator algebras
    Conference on Algebra, K-theory and Applications, Honoring the Works of Hyman Bass and Charles Weibel, Rutgers University
  • 26 Mar 2026
    Behind the CV: A Conversation with Prof. Daniel Krashenoutreach
    CURF (Center for Undergraduate Research and Fellowships) 'Behind the CV' series, University of Pennsylvania
  • 30 Sep 2025
    Lefschetz hyperplane theorems and Brauer classes
    Banff International Research Station, Workshop 25w5323 - Arithmetic Geometry and Algebraic Groups, Banff, Canada
    video
  • 29 Jul 2025
    Complexity of algebraic objects over fields and the period-index problem
    Invited address at the Summer Research Institute in Algebraic Geometry, Week 3, Fort Collins, CO
  • 1 Nov 2024
    Some algebraic perspectives on conformal field theory
    University of Pittsburgh Colloquium
  • Jul 2024
    Field arithmetic and the complexity of Galois cohomologymini-course
    IAS/Park City Mathematics Institute (PCMI) 2024 Graduate Summer School on Motivic Homotopy Theory (in person)
    video
  • 25 Jun 2024
    The symbol length problem for Brauer groups and Galois cohomology
    Casa Matemática Oaxaca conference on Algebraic K-theory and Brauer Groups
    video
  • 9 Feb 2024
    Explorations in the world of Vertex Operator Algebras
    Oberlin College Colloquium
  • 8 Nov 2023
    Period-index problems and the complexity of Galois cohomology
    University of Michigan Algebraic Geometry seminar
  • Jun 2023
    Brauertsch fields
    Specializations in Number Theory and Algebra, Technion, Israel
  • 15 Apr 2023
    The period-index problem for Galois cohomology over semiglobal fields
    AMS Spring Central Sectional Meeting, Special Session on Brauer Groups in Algebraic Geometry and Arithmetic
  • 9 Mar 2023
    The Geometry of Field Arithmetic
    Rice University Colloquium
  • 1 Mar 2023
    Perspectives on local-global principles for the Brauer group
    Rutgers Algebra Seminar
  • 13 Feb 2023
    The Geometry of Field Arithmetic
    Bryn Mawr Colloquium
  • 2 Feb 2023
    The Geometry of Field Arithmetic
    University of Pennsylvania Graduate Visitation Day
  • 6 Apr 2022
    Field patching and algebraic structures
    Invited address at the Joint Mathematics Meetings (virtual)
  • 18 Mar 2022
    Algebraic cycles and indecomposable algebras
    University of Pennsylvania Algebra Seminar
  • 3 Dec 2021
    Can you hear the shape of a division algebra?
    Graduate Pizza Seminar, University of Pennsylvania
  • 17 Nov 2021
    Can you hear the shape of a division algebra?colloquium
    Dartmouth Mathematics Colloquium (2021 Lahr Lectures, second lecture), Dartmouth College
  • 16 Nov 2021
    Professional empathy
    the 2021 Lahr Lecture at Dartmouth
    Flyer (pdf)
  • 8 Nov 2021
    Hearing the shape of division algebras
    the Ohio State University Algebra Seminar
  • 3 Nov 2021
    Splitting fields of central simple algebras
    Amitsur Centennial Symposium
  • 26 Oct 2021
  • 20 Oct 2021
    Algebraic structures and the algebraic structures on which they liveoutreach
    the Rutgers Undergraduate Math Association
  • 12 Jul 2021
    Field arithmetic and the complexity of algebraic objects
    Minicourse as part of the PCMI Graduate Summer Session on Motivic Homotopy Theory (online)
    video
  • 28 Jun 2021
    Hearing the shapes of division algebras
    Algebraic groups and algebraic geometry: in honor of Zinovy Reichstein's 60th birthday (online conference)
  • 7 Apr 2021
    Descriptions of algebraic structures over fields
    University of Pennsylvania Colloquium
  • 27 Jan 2021
    Local-global principles for algebraic structures at the crossroads of topology and rationality
    University of Texas at Austin Colloquium
  • 7 Jan 2021
    Local-global principles for reductive groups over semiglobal fields
    Special Session on Galois Cohomology in Arithmetic Geometry, Virtual Joint Mathematics Meetings

talks since 2021; older ones are in the CV.

mathematical statistics full course · 38 lectures calculus 1 playlist graph theory playlist group theory playlist probability playlist wavelets playlist combinatorics playlist Galois descent playlist stacks playlist algebraic geometry 2.5: schemes playlist Jordan algebras playlist derived categories and motives playlist math snippets playlist

all on YouTube →