These are the things I have written over the past years.

Papers

Accepted for publication

  1. Derived categories of (nested) Hilbert schemes

    with Andreas Krug.

    accepted for publication in Michigan Mathematical Journal,

    arXiv1909.04321

  2. Projectivity of the moduli space of vector bundles on a curve

    with Jarod Alper, Daniel Bragg, Jason Liang, Tuomas Tajakka.

    accepted for publication in SPEC: Stacks Project Expository Collection,

    arXiv2206.06195

  3. Homological projective duality for the Segre cubic

    with Thorsten Beckmann.

    accepted for publication in Proceedings of Nottingham Algebraic Geometry Seminar,

    arXiv2202.08601

Published

  1. Embeddings of algebras in derived categories of surfaces

    with Theo Raedschelders.

    Proceedings of the American Mathematical Society, volume 145, number 7, 2017, pages 2757–2770

    arXiv1501.04197 MR3637928 Zbl1378.16035 doi10.1090/proc/13497

  2. The point variety of quantum polynomial rings

    with Kevin De Laet, Lieven Le Bruyn.

    Journal of Algebra, volume 463, 2016, pages 10–22

    arXiv1509.07312 MR3637928 Zbl1454.14043 doi10.1016/j.jalgebra.2016.06.013

  3. Derived categories of noncommutative quadrics and Hilbert squares

    with Theo Raedschelders.

    IMRN, volume 2020, issue 19, pages 6042–6069

    arXiv1605.02795 MR4165471 doi10.1093/imrn/rny192

  4. Relative tensor triangular Chow groups for coherent algebras

    with Sebastian Klein.

    Journal of Algebra, volume 487, 2017, pages 386–428

    arXiv1607.03423 MR3671198 Zbl1400.14049 doi10.1016/j.jalgebra.2017.05.024

  5. Hochschild cohomology of noncommutative planes and quadrics

    Journal of Noncommutative Geometry, volume 13, 2019, pages 769–795

    arXiv1705.06098 MR3988086 Zbl1429.14002 doi10.4171/JNCG/338

  6. Constructing noncommutative surfaces with exceptional collections of length 4

    with Dennis Presotto.

    Journal of the London Mathematical Society (2), volume 98, 2018, pages 85–103

    arXiv1705.06943 MR3847233 Zbl1441.14008 doi10.1112/jlms.12126

  7. Examples violating Golyshev's canonical strip hypothesis

    with Sergey Galkin, Swarnava Mukhopadhyay.

    Experimental Mathematics, volume 31 (1), 2022, pages 233–237,

    arXiv1806.07644 doi10.1080/10586458.2019.1602571

    see also the related repositories

  8. Admissible subcategories in derived categories of moduli of vector bundles on curves

    with Swarnava Mukhopadhyay.

    Advances in Mathematics, volume 351, 2019, pages 653–675

    arXiv1807.00216 MR3954042 Zbl1440.14079 doi10.1016/j.aim.2019.05.019

  9. Hilbert squares: derived categories and deformations

    with Lie Fu, Theo Raedschelders.

    Selecta Mathematica, volume 25, 2019, paper 37

    arXiv1810.11873 MR3950704 Zbl1423.14115 doi10.1007/s00029-019-0482-y

  10. Automorphisms of Hilbert schemes of points on surfaces

    with Georg Oberdieck, Jørgen Vold Rennemo.

    Transactions of the American Mathematical Society, volume 373 (9), 2020, pages 6139–6156

    arXiv1907.07064 MR4155174 Zbl1451.14008 doi10.1090/tran/8106

  11. Derived categories of the Cayley plane and the coadjoint Grassmannian in type F

    with Alexander Kuznetsov, Maxim Smirnov.

    Transformation Groups, published online ahead of print

    arXiv2005.01989 doi10.1007/s00031-021-09657-w

Preprints

  1. Comparison of two constructions of noncommutative surfaces with exceptional collections of length 4

    with Dennis Presotto, Michel Van den Bergh.

    arXiv1811.08810

    We will retitle this to "The Hirzebruch isomorphism for exotic noncommutative surfaces".

  2. Hochschild cohomology of generalised Grassmannians

    with Maxim Smirnov.

    arXiv1911.09414

  3. Moduli spaces of semiorthogonal decompositions in families

    with Shinnosuke Okawa, Andrea Ricolfi.

    arXiv2002.03303

  4. Derived categories of standard flips and cubic hypersurfaces

    with Lie Fu, Theo Raedschelders.

    arXiv2002.04940

  5. Indecomposability of derived categories in families

    with Francesco Bastianelli, Shinnosuke Okawa, Andrea Ricolfi.

    arXiv2007.00994

  6. Decompositions of moduli spaces of vector bundles and graph potentials

    with Sergey Galkin, Swarnava Mukhopadhyay.

    arXiv2009.05568v3

  7. Polyvector fields for Fano 3-folds

    with Enrico Fatighenti, Fabio Tanturri.

    arXiv2104.07626

  8. Graph potentials and topological quantum field theories

    with Sergey Galkin, Swarnava Mukhopadhyay.

    arXiv2205.07244

  9. Graph potentials and symplectic geometry of moduli spaces of vector bundles

    with Sergey Galkin, Swarnava Mukhopadhyay.

    arXiv2206.11584

Preprints nearing completion

  1. A combinatorial non-abelian Torelli theorem

    with Sergey Galkin, Swarnava Mukhopadhyay.

    available on request

  2. Effective bounds and ampleness of determinantal line bundles on moduli spaces of quiver representations

    with Chiara Damiolini, Hans Franzen, Vicky Hoskins, Svetlana Makarova, Tuomas Tajakka.

    working title

Other publications

  1. Semiorthogonal decompositions for moduli of sheaves on curves

    Oberwolfach Reports 24/2018, Interactions between Algebraic Geometry and Noncommutative Algebra, pages 1473–1476

    pdflink

  2. Comparing definitions of Hochschild cohomology for algebraic stacks

    Advances in Mathematics, volume 364, 2020

    arXiv1809.08715 MR4057490 Zbl1435.14005 doi10.1016/j.aim.2020.106978

    appendix to The Hochschild cohomology ring of a global quotient orbifold, by Cris Negron and Travis Schedler

  3. How do semiorthogonal decompositions behave in families?

    Oberwolfach Reports 19/2020, Algebraic Geometry: Moduli Spaces, Birational Geometry and Derived Aspects, pages 985–989

    pdflink

  4. Projectivity of good moduli spaces of semistable quiver representations and vector bundles

    Oberwolfach Reports ??/2022, Interactions between Algebraic Geometry and Noncommutative Algebra

    pdflink

  5. Mirror symmetry for moduli of rank 2 bundles on a curve

    Oberwolfach Reports ??/2022, Algebraic Geometry: Moduli Spaces, Birational Geometry and Derived Aspects

    pdflink

For a broader audience

  1. Het Stacks project

    with Aise Johan de Jong.

    Nieuw Archief voor Wiskunde (serie 5), volume 21 (3), 2020, pages 167–173

    pdflink

  2. Curating Online Mathematical Resources

    Notices of the American Mathematical Society, volume 69 (9), 2021, pages 1524–1527

    pdflink

  3. The periodic tables of algebraic geometry

    Snapshots of modern mathematics from Oberwolfach,

Lecture notes

  • Stratification of triangulated categories

    pdflink

    notes for the lecture series by Henning Krause at the summer school on derived categories in Nantes (with corrections by Henning Krause, thanks!)

  • Grothendieck duality

    pdflink

    notes for a lecture series on Grothendieck duality for a graduate student seminar

  • Hochschild (co)homology, and the Hochschild–Kostant–Rosenberg decomposition

    pdflink

    lecture notes for Advanced Topics in Algebra, a course from 2018 at the University of Bonn (to be expanded in the future)

Not intended for publication

  • Segre symbols

    pdflink

    short note defining Segre symbols as a method of classifying base loci of pencils of quadric hypersurfaces

  • Artin–Schelter regular algebras versus smooth projective varieties

    pdflink

    short note, possibly to be extended at some point

Non-mathematical writing

  • The fugue and the guitar

    pdflink

    final project for my composition course (in Dutch)

This gives the following list of coauthors: Jarod Alper, Francesco Bastianelli, Thorsten Beckmann, Daniel Bragg, Chiara Damiolini, Aise Johan de Jong, Kevin De Laet, Enrico Fatighenti, Hans Franzen, Lie Fu, Sergey Galkin, Vicky Hoskins, Sebastian Klein, Andreas Krug, Lieven Le Bruyn, Jason Liang, Svetlana Makarova, Swarnava Mukhopadhyay, Alexander Kuznetsov, Georg Oberdieck, Shinnosuke Okawa, Dennis Presotto, Theo Raedschelders, Andrea Ricolfi, Jørgen Vold Rennemo, Maxim Smirnov, Tuomas Tajakka, Fabio Tanturri, Michel Van den Bergh

Editorial work

Stacks Project Expository Collection, (soon to be) published by Cambridge University Press in the London Mathematical Society Lecture Note Series, number 480

Table of contents (with links to preprint versions of chapters whenever available)

  1. Projectivity of the moduli of curves, by Raymond Cheng, Carl Lian and Takumi Murayama
  2. The stack of admissible covers is algebraic, by Elsa Corniani, Neeraj Deshmukh, Brett Nasserden, Emanuel Reinecke, Nawaz Sultani and Rachel Webb
  3. Projectivity of the moduli space of vector bundles on a curve, by Jarod Alper, Pieter Belmans, Daniel Bragg, Jason Liang and Tuomas Tajakka
  4. Boundedness of semistable sheaves, by Haoyang Guo, Sanal Shivaprasad, Dylan Spence and Yueqiao Wu
  5. Theorem of the Base, by Raymond Cheng, Lena Ji, Matt Larson and Noah Olander
  6. Weil restriction for schemes and beyond, by Lena Ji, Shizhang Li, Patrick McFaddin, Drew Moore and Matthew Stevenson
  7. Heights over finitely generated fields, by Stephen McKean and Soumya Sankar
  8. An explicit self-duality, by Nikolas Kuhn, Devlin Mallory, Vaidehee Thatte and Kirsten Wickelgren
  9. Tannakian reconstruction of coalgebroids, by Yifei Zhao

Reviews

I have written reviews for

Some other notes

You might also be interested in my blog, where various things that could also have been pdf's are written in html. The notes that are listed in what follows are less polished or less important (which is a vague opinion anyway) than the ones listed above as lecture notes or not intended for publication, or they are purely of expository and standard nature.

2021

2017

2016

2015

2014

2013