Pieter Belmans—categories

computing (8)
latex (60)
mathematics (425)
music (15)
personal (25)

computing

Dec 21, 2019 Gerby supports TikZ now
Jul 16, 2019 A minimal working example to use Gerby
May 20, 2018 A website for Gerby
Jan 05, 2018 Introducing Gerby: the tools and website
Aug 27, 2017 Introducing Gerby: plasTeX
Apr 09, 2017 On Bondal's counterexample to the Jordan-Hölder property: non-extendability
May 26, 2016 Alternative visualisation of the structure of the Stacks project
Nov 06, 2014 Software for computations in algebraic geometry

latex

Jan 14, 2025 A new version of bibgetter
Jan 13, 2021 Introducing The Moduli Space
Dec 05, 2018 Recent CTAN additions: dynkin-diagrams, rank-2-roots
Oct 17, 2018 Introducing Kerodon
May 21, 2018 A new website for the Stacks project (2)
Nov 30, 2016 Improved open and closed immersions in tikz-cd
Nov 05, 2016 Announcing bibgetter
Oct 24, 2016 Aligning table columns on a mathematical operator
Dec 22, 2015 texloganalyser
Dec 21, 2015 On "Towards MathJax 3.0"
Jul 01, 2015 New feature for the Stacks project: detailed tag edits
Nov 24, 2014 Nitpicking on Čech cohomology notation
Nov 23, 2014 Adding an equation to the table of contents
Nov 11, 2014 How do I properly cite a preprint in `biblatex`?
Apr 25, 2014 TikZ workshop: the slides
Apr 24, 2014 Announcement: TikZ workshop
Apr 03, 2014 New feature for the Stacks project: references
Jul 30, 2013 A new website for the Stacks project: the sequel
Mar 13, 2013 Open and closed immersions in tikz-cd
Feb 04, 2013 Categories for todos
Jan 07, 2013 An online bibliography for the Stacks project
Dec 15, 2012 Online view for the Stacks project
Jul 19, 2012 A new website for the Stacks project
Jun 19, 2012 Why should I be using TeX for graphics?
Apr 20, 2012 A Pygments lexer for GAP
Mar 29, 2012 How to write Čech cohomology groups in LaTeX
Feb 09, 2012 A beamer theme for the University of Ghent
Dec 14, 2011 Changing \href{}{} to produce footnotes
Dec 05, 2011 Dutch LaTeX course
Nov 04, 2011 \uparrow and its variations are variable-sized delimiters
Aug 27, 2011 An update to dutch.lbx in babelbib
Aug 24, 2011 How to use \thanks in memoir's titlingpage
Jul 23, 2011 Adding ~/.texmf to TeX Live 2011's directories, or installing beamer themes
Jul 05, 2011 Guest post: Inheritance in Pygments' LatexFormatter
May 25, 2011 A LaTeX version of Mumford's impression of Spec Z[x], or some TikZ tricks
Mar 15, 2011 A correct implementation of the Dutch language in babelbib
Mar 06, 2011 How to change Pygments styles and a University of Antwerp style
Feb 26, 2011 Relative paths in multiple documents
Feb 20, 2011 Why LaTeX beamer needs fragile when using verbatim
Dec 30, 2010 Lessons learned from blogging
Dec 27, 2010 An H-tree in TikZ
Dec 24, 2010 An extension to our \function macro: injective and surjective functions using optional parameters
Dec 21, 2010 thmtools: a rant
Dec 18, 2010 My good practice concerning inline mathematical formulas
Dec 15, 2010 How to let a command automatically adapt to the current mathematical style
Dec 15, 2010 \twoheadrightarrow is in amssymb
Dec 12, 2010 A Turing machine in LaTeX: the follow-up
Dec 06, 2010 The power of \mathclap (and \substack)
Nov 28, 2010 Wiggly text marker lines in TeX
Nov 23, 2010 LaTeX in Vim just got a little more awesome
Nov 22, 2010 A note on fontenc
Nov 16, 2010 Caveat: correct spacing in quotient
Nov 13, 2010 Automated handling of whitespace in commands using xspace
Nov 11, 2010 Howto: Draw algebraic curves using PGF/TikZ
Nov 01, 2010 How to make the TikZ option raw output aware of segments
Nov 01, 2010 How not to read the source of pgfplots
Oct 14, 2010 Literate programming
Oct 14, 2010 Antwerp ACM Student Chapter and Te(ch/X)Talks
Oct 02, 2010 Direct and inverse limit in LaTeX
Sep 13, 2010 PhilTeX

mathematics

Sep 11, 2026 Rationality of hypersurfaces: a new website
Sep 09, 2026 A noncommutatively rigid Fano fivefold
Sep 02, 2026 Brauer groups of Fano 3-folds
Aug 11, 2026 New paper: The hyperkähler period-index conjecture is false
Jul 21, 2026 Hyperelliptic varieties: quotients of complex tori by finite groups
Jul 15, 2026 New paper: Fano 4-fold quiver moduli from subspace quivers
Jul 13, 2026 Cubic 4-folds: special cubic fourfolds and their K3 surfaces
Jul 12, 2026 le superficie algebriche: a table and more surfaces
Jul 10, 2026 DOIs for my websites
Jul 09, 2026 Mgnbar.info: two new layers
Jul 08, 2026 New paper: Brauer groups of resolved quiver moduli via gerbes
Jul 03, 2026 Congratulations Dr. Gianni Petrella!
Jul 02, 2026 Fanography is now a static website (and other improvements)
Jul 01, 2026 The Mori–Mukai determinant
May 29, 2026 Verifying Kostant's conjecture using Semisimple.jl
May 11, 2026 Semisimple.jl 1.0.0 is now available!
May 08, 2026 HomogeneousTools website
Mar 17, 2026 Intersection theory in OSCAR
Mar 09, 2026 Hyperkaehler.info: an update
Feb 06, 2026 Welcome to the new members of the research group
Feb 05, 2026 Postdoc position in algebraic geometry
Feb 03, 2026 An assistant professorship at Utrecht University
Jan 16, 2026 Events related to Markus Reineke as Springer Chair
Dec 28, 2025 Change of host for Hyperkaehler.info
Nov 26, 2025 New paper: Generic non-semisimplicity of small quantum cohomology of Kronecker moduli
Nov 17, 2025 Updated paper: Moduli spaces of semiorthogonal decompositions in families
Nov 14, 2025 New paper: Deformation theory for a morphism in the derived category with fixed lift of the codomain
Nov 07, 2025 An assistant professorship at Utrecht University
Jun 27, 2025 Conway's game of life in 3 dimensions
Jun 25, 2025 QuiverTools: the writeup
Jun 24, 2025 Congratulations Dr. Thilo Baumann!
Jun 19, 2025 PhD position in algebraic geometry and representation theory
Jun 18, 2025 PhD and postdoc position in algebraic geometry
Jun 12, 2025 New paper: Failure of Bott vanishing for (co)adjoint partial flag varieties
Mar 25, 2025 Workshop announcement: VBAC 2025 Quivers – Sheaves
Jan 30, 2025 Noncommutative algebraic geometry summer school in Antwerp
Jan 22, 2025 Workshop announcement: GROW@Frankfurt
Dec 16, 2024 New tool: twisted Hodge diamonds for Hilbert schemes of points
Dec 13, 2024 Graphical evidence for the Birch and Swinnerton-Dyer conjecture
Nov 25, 2024 New paper: The Albanese morphism for hyperelliptic varieties
Nov 19, 2024 Updated paper: Moduli spaces of semiorthogonal decompositions in families
Oct 11, 2024 New paper: Central curves on noncommutative surfaces
Oct 10, 2024 Modern Methods in Moduli: a workshop in Luxembourg
Jul 19, 2024 An update for Fanography.info: K-stability
Jul 17, 2024 PhD positions at the University of Luxembourg
Jul 07, 2024 QuiverTools
May 29, 2024 Upper-Rhine and Tributaries Algebraic Geometry Seminar
Mar 20, 2024 New paper: On decompositions for Fano schemes of intersections of two quadrics
Mar 15, 2024 Postdoc position in derived algebraic geometry with Sarah Scherotzke
Mar 05, 2024 Fortnightly links (174)
Mar 04, 2024 Scholarships for studying at the University of Luxembourg
Feb 15, 2024 An update for Grassmannian.info: 2 big exceptional quantum spectra
Feb 14, 2024 Fortnightly links (173)
Nov 29, 2023 New papers: two papers on quiver moduli
Sep 13, 2023 New paper: Hochschild cohomology of Hilbert schemes of points on surfaces
Sep 04, 2023 Fortnightly links (172)
Aug 17, 2023 GitHub LaTeX template
Aug 16, 2023 Statistics for the Stacks project (2)
Aug 06, 2023 Fortnightly links (171)
Jul 14, 2023 The identification of a 6-dimensional Kronecker quiver moduli with a certain zero section
Jul 07, 2023 GitHub Actions for automated unit tests of the Hodge diamond cutter
Jul 06, 2023 New paper: On Chow rings of quiver moduli
Jul 03, 2023 Fortnightly links (170)
May 17, 2023 Fortnightly links (169)
Apr 17, 2023 Fortnightly links (168)
Mar 21, 2023 Fortnightly links (167)
Feb 27, 2023 Fortnightly links (166)
Feb 23, 2023 An update for Fanography.info: Bott vanishing
Feb 16, 2023 Fortnightly links (165)
Feb 01, 2023 Mgnbar.info: the geometry of the moduli space of (marked) curves
Jan 09, 2023 Fortnightly links (164)
Dec 19, 2022 Fortnightly links (163)
Dec 13, 2022 Postdoc position on MathJobs
Dec 08, 2022 Stacks Project Workshop 2023
Dec 07, 2022 Fortnightly links (162)
Nov 24, 2022 Fortnightly links (161)
Nov 15, 2022 Postdoc position in algebraic geometry / representation theory
Nov 09, 2022 Fortnightly links (160)
Oct 23, 2022 Fortnightly links (159)
Oct 07, 2022 Fortnightly links (158)
Oct 04, 2022 New paper: Projectivity and effective global generation of determinantal line bundles on quiver moduli
Sep 20, 2022 Videos and notes of Noncommutative Shapes
Sep 19, 2022 Fortnightly links (157)
Aug 30, 2022 Fortnightly links (156)
Aug 22, 2022 An update for Grassmannian.info: higher Fanoness
Aug 21, 2022 The periodic tables of algebraic geometry: 3-folds and beyond
Aug 20, 2022 The periodic tables of algebraic geometry: curves and surfaces
Aug 19, 2022 The periodic tables of algebraic geometry: introduction
Aug 18, 2022 Updates for twisted Hodge diamonds for complete intersections
Aug 15, 2022 Fortnightly links (155)
Aug 03, 2022 New Oberwolfach report: Mirror symmetry for moduli of rank 2 bundles on a curve
Jul 31, 2022 Fortnightly links (154)
Jul 24, 2022 Stacks Project Expository Collection
Jul 23, 2022 New-ish paper: Graph potentials and symplectic geometry of moduli spaces of vector bundles
Jul 22, 2022 Fortnightly links (153), part 2
Jul 21, 2022 Fortnightly links (153), part 1
Jun 09, 2022 Noncommutative Shapes
May 18, 2022 New Oberwolfach report: Projectivity of good moduli spaces of semistable quiver representations and vector bundles
May 17, 2022 New-ish paper: Graph potentials and topological quantum field theories
May 12, 2022 Fortnightly links (152)
May 11, 2022 New-ish paper: Decompositions of moduli spaces of vector bundles and graph potentials
Apr 26, 2022 Fortnightly links (151)
Apr 21, 2022 An associate / full professorship at the University of Luxembourg
Mar 28, 2022 Fortnightly links (150)
Mar 06, 2022 Fortnightly links (149)
Feb 21, 2022 PhD position at the University of Luxembourg
Feb 20, 2022 Fortnightly links (148)
Feb 18, 2022 New paper: Homological projective duality for the Segre cubic
Feb 13, 2022 Experimental Mathematics Lab @ uni.lu: new website
Feb 11, 2022 Workshop announcement: GROW@Bonn
Feb 07, 2022 Fortnightly links (147)
Jan 23, 2022 Fortnightly links (146)
Jan 10, 2022 Fortnightly links (145)
Dec 14, 2021 Fortnightly links (144)
Dec 13, 2021 Aise Johan de Jong wins the Leroy P. Steele Prize for Mathematical Exposition for the Stacks project
Nov 28, 2021 Fortnightly links (143)
Nov 15, 2021 Fortnightly links (142)
Nov 02, 2021 Fortnightly links (141)
Oct 22, 2021 Some comments on hyperplane sections of generalised Grassmannians
Oct 17, 2021 Fortnightly links (140)
Oct 05, 2021 Fortnightly links (139)
Sep 21, 2021 Fortnightly links (138)
Sep 15, 2021 Noncommutative Shapes: a half-way event
Sep 12, 2021 Fortnightly links (137)
Sep 01, 2021 Hyperkaehler.info: the geography of irreducible holomorphic symplectic (or hyperkähler) varieties
Aug 23, 2021 Fortnightly links (136)
Aug 09, 2021 Fortnightly links (135)
Aug 06, 2021 Clean URLs for Grassmannian.info and Fanography
Aug 05, 2021 Documentation and unit tests for the Hodge diamond cutter
Jul 26, 2021 Fortnightly links (134)
Jul 12, 2021 Fortnightly links (133)
Jul 08, 2021 Follow-up on $\int\mathrm{td}_X^{1/2}$ for hyperkähler varieties
Jul 06, 2021 On $\int\mathrm{td}_X^{1/2}$ of O'Grady's exceptional hyperkähler varieties
Jul 04, 2021 Fortnightly links (132)
Jun 19, 2021 Fortnightly links (131)
May 30, 2021 Fortnightly links (130)
May 20, 2021 Fortnightly links (129)
May 16, 2021 M.S. Narasimhan (1932–2021)
May 10, 2021 Fortnightly links (128)
Apr 28, 2021 Fortnightly links (127)
Apr 04, 2021 Fortnightly links (126)
Mar 23, 2021 Fortnightly links (125)
Mar 21, 2021 Seshadri's desingularisation in the Hodge diamond cutter, and a bold proposal
Mar 08, 2021 Fortnightly links (124)
Mar 06, 2021 Fano 3-folds in the Hodge diamond cutter
Mar 05, 2021 Quiver moduli in the Hodge diamond cutter
Feb 24, 2021 An update for Grassmannian.info: quantum spectra for horospherical varieties
Feb 23, 2021 Horospherical varieties on Grassmannian.info
Feb 22, 2021 Fortnightly links (123)
Feb 14, 2021 Horospherical varieties in the Hodge diamond cutter
Feb 07, 2021 Fortnightly links (122)
Feb 01, 2021 Petition for the release of Alexander Kuznetsov
Jan 25, 2021 Fortnightly links (121)
Jan 11, 2021 An overview of what the names Pieri, Giambelli, Chevalley, Monk, Littlewood–Richardson say about the cohomology of $G/P$
Jan 10, 2021 Fortnightly links (120)
Dec 29, 2020 An update for Fanography.info: description as zero sections of homogeneous vector bundles
Dec 24, 2020 Fortnightly links (119)
Dec 07, 2020 Fortnightly links (118)
Dec 03, 2020 An update for Grassmannian.info: more quantum spectra!
Nov 29, 2020 An update for Grassmannian.info: spectra of quantum multiplication with $\mathrm{c}_1$
Nov 27, 2020 Alain Verschoren (1954–2020)
Nov 20, 2020 An update for Fanography.info: semisimplicity of quantum cohomology
Nov 12, 2020 Fortnightly links (117)
Nov 06, 2020 An update for Grassmannian.info: semisimplicity of quantum cohomology
Nov 02, 2020 Recordings and slides for the Felix Klein lectures by Markus Reineke
Oct 28, 2020 Two additions to the Hodge diamond cutter
Oct 26, 2020 Pictures of the canonical strip hypothesis for moduli of vector bundles
Oct 25, 2020 Fortnightly links (116)
Oct 16, 2020 Registration for Felix Klein lectures by Markus Reineke
Oct 11, 2020 Fortnightly links (115)
Sep 29, 2020 Interpreting skew conics
Sep 28, 2020 Fortnightly links (114)
Sep 15, 2020 Fortnightly links (113)
Sep 14, 2020 New preprint: Graph potentials and moduli spaces of rank two bundles on a curve
Sep 10, 2020 Felix Klein lectures by Markus Reineke
Sep 09, 2020 The Stacks project in Nieuw Archief voor Wiskunde
Aug 31, 2020 Fortnightly links (112)
Aug 11, 2020 Fortnightly links (111)
Jul 19, 2020 Fortnightly links (110)
Jul 03, 2020 New preprint: Indecomposability of derived categories in families
Jun 22, 2020 Fortnightly links (109)
Jun 16, 2020 A DOI for the Hodge diamond cutter
Jun 09, 2020 Fortnightly links (108)
May 29, 2020 An update for Grassmannian.info: exceptional collections
May 25, 2020 Fortnightly links (107)
May 22, 2020 An update for Grassmannian.info: Freudenthal's magic square and pages for root system data
May 16, 2020 An update for Grassmannian.info: pages for each Grassmannian
May 10, 2020 Fortnightly links (106)
May 08, 2020 Grassmannian.info: a periodic table for Grassmannians
May 06, 2020 New preprint: Derived categories of the Cayley plane and the coadjoint Grassmannian of type F
Apr 26, 2020 Fortnightly links (105)
Apr 13, 2020 Fortnightly links (104)
Apr 09, 2020 Statistics for the Stacks project
Apr 05, 2020 Fortnightly links (103)
Apr 02, 2020 Some updates
Mar 17, 2020 Fortnightly links (102)
Mar 01, 2020 Fortnightly links (101)
Feb 05, 2020 Fortnightly links (100)
Feb 03, 2020 Seminar announcement: exceptional collections on partial flag varieties
Jan 19, 2020 Fortnightly links (99)
Jan 05, 2020 Fortnightly links (98)
Dec 26, 2019 Fortnightly links (97)
Dec 12, 2019 le superficie algebriche: an update
Dec 08, 2019 Fortnightly links (96)
Nov 25, 2019 Fortnightly links (95)
Nov 10, 2019 Fortnightly links (94)
Nov 06, 2019 New tool: twisted Hodge diamonds for complete intersections
Oct 29, 2019 A caveat on the notion of strongly simple
Oct 28, 2019 Fortnightly links (93)
Oct 14, 2019 Fortnightly links (92)
Oct 07, 2019 Belgian–Dutch algebraic geometry day in Antwerp
Sep 30, 2019 Fortnightly links (91)
Sep 15, 2019 Fortnightly links (90)
Sep 10, 2019 Fortnightly links (89)
Aug 09, 2019 Registration for the Stacks Project Workshop 2020
Aug 05, 2019 Fortnightly links (88)
Jul 29, 2019 Fortnightly links (87)
Jul 15, 2019 Fanography: del Pezzo surfaces
Jul 08, 2019 Hodge numbers for Quot schemes on curves
Jul 07, 2019 Fortnightly links (86)
Jun 24, 2019 Fortnightly links (85)
Jun 21, 2019 Stacks Project Workshop 2020: website
Jun 11, 2019 Fortnightly links (84)
May 24, 2019 Stacks Project Workshop 2
May 13, 2019 Fortnightly links (83)
May 09, 2019 Hodge numbers for O'Grady 10
May 01, 2019 Fortnightly links (82)
Apr 14, 2019 Fortnightly links (81)
Mar 25, 2019 Fortnightly links (80)
Feb 03, 2019 Fortnightly links (79)
Jan 27, 2019 New tool: Hodge diamond cutter
Jan 16, 2019 Hodge numbers for Hilbert squares and Hilbert cubes
Jan 13, 2019 Fortnightly links (78)
Jan 04, 2019 Hodge numbers for partial flag varieties
Jan 03, 2019 Fanography: updates
Jan 01, 2019 Fortnightly links (77)
Dec 26, 2018 Roots of Hilbert polynomials for Fano toric varieties
Dec 10, 2018 Fortnightly links (76)
Nov 25, 2018 Fortnightly links (75)
Nov 22, 2018 Hodge diamonds and polyvector parallelograms
Nov 14, 2018 Fortnightly links (74)
Nov 01, 2018 Hodge numbers for generalised Kummer varieties
Oct 31, 2018 Fortnightly links (73)
Oct 18, 2018 Fortnightly links (72)
Oct 15, 2018 Fanography: a tool to visually study the geography of Fano 3-folds
Oct 05, 2018 Fortnightly links (71)
Sep 17, 2018 Fortnightly links (70)
Sep 04, 2018 Fortnightly links (69)
Aug 23, 2018 Index of partial flag varieties
Aug 22, 2018 Rank of the Grothendieck group of partial flag varieties
Aug 14, 2018 Hilbert squares of higher-dimensional hyperkähler varieties are not hyperkähler
Aug 13, 2018 Fortnightly links (68)
Aug 02, 2018 Fortnightly links (67)
Jul 15, 2018 Fortnightly links (66)
Jul 10, 2018 Peter Scholze is a new director of the Max Planck Institute for Mathematics
Jul 03, 2018 Fortnightly links (65)
Jun 18, 2018 Fortnightly links (64)
Jun 15, 2018 Brill–Noether pictures
Jun 04, 2018 Fortnightly links (63)
May 23, 2018 Fortnightly links (62)
May 06, 2018 Fortnightly links (61)
Apr 22, 2018 Fortnightly links (60)
Apr 09, 2018 My course on Hochschild (co)homology starts tomorrow
Apr 08, 2018 Fortnightly links (59)
Mar 30, 2018 Fortnightly links (58)
Mar 18, 2018 Golyshev's periodic table for Fano 3-folds of rank 1
Mar 13, 2018 Fortnightly links (57)
Feb 27, 2018 Fortnightly links (56)
Feb 11, 2018 Fortnightly links (55)
Feb 01, 2018 Course announcement: Hochschild (co)homology
Jan 28, 2018 Fortnightly links (54)
Jan 27, 2018 Hodge numbers for complete intersections
Jan 21, 2018 Hodge numbers for $\operatorname{M}_C(r,\mathcal{L})$
Jan 14, 2018 Fortnightly links (53)
Jan 01, 2018 Fortnightly links (52)
Dec 17, 2017 Fortnightly links (51)
Dec 04, 2017 Fortnightly links (50)
Nov 19, 2017 Fortnightly links (49)
Nov 18, 2017 Hodge numbers for $\operatorname{Hilb}^nS$
Nov 13, 2017 Ragnar-Olaf Buchweitz (1952–2017)
Oct 29, 2017 Fortnightly links (48)
Oct 15, 2017 Fortnightly links (47)
Oct 02, 2017 Fortnightly links (46)
Sep 17, 2017 Fortnightly links (45)
Sep 13, 2017 Open access journals in algebraic geometry
Sep 11, 2017 The Stacks project now uses HTTPS
Sep 03, 2017 Fortnightly links (44)
Aug 20, 2017 Fortnightly links (43)
Aug 09, 2017 The Stacks project workshop: the aftermath
Aug 06, 2017 Fortnightly links (42)
Jul 23, 2017 Fortnightly links (40) and (41)
Jun 25, 2017 Fortnightly links (39)
Jun 14, 2017 Dimensions of partial flag varieties
Jun 11, 2017 Fortnightly links (38)
May 28, 2017 Fortnightly links (37)
May 14, 2017 Fortnightly links (36)
Apr 30, 2017 Fortnightly links (35)
Apr 16, 2017 Fortnightly links (34)
Apr 08, 2017 On Bondal's counterexample to the Jordan-Hölder property: exceptionality
Apr 02, 2017 Fortnightly links (33)
Mar 26, 2017 Do you want to be my colleague?
Mar 19, 2017 Fortnightly links (32)
Mar 05, 2017 Fortnightly links (31)
Feb 27, 2017 Summer school: Quadratic forms and local-global principles
Feb 19, 2017 Fortnightly links (30)
Feb 05, 2017 Fortnightly links (29)
Jan 25, 2017 One week left to register for the Stacks project workshop
Jan 22, 2017 Fortnightly links (28)
Jan 08, 2017 Fortnightly links (27)
Dec 26, 2016 Fortnightly links (26)
Dec 11, 2016 Fortnightly links (25)
Nov 27, 2016 Fortnightly links (24)
Nov 21, 2016 Gorenstein weighted projective spaces and Egyptian fractions
Nov 13, 2016 Fortnightly links (23)
Nov 08, 2016 Registration for the Stacks Project Workshop
Oct 30, 2016 Fortnightly links (22)
Oct 16, 2016 Fortnightly links (21)
Oct 11, 2016 The great debate: is it del Pezzo or Del Pezzo?
Oct 05, 2016 List of mentors for Stacks Project Workshop
Oct 03, 2016 According to Groth. IV.22
Oct 02, 2016 Fortnightly links (20)
Sep 25, 2016 Live blogging the Antwerp conference (3)
Sep 22, 2016 Live blogging the Antwerp conference (2)
Sep 20, 2016 Live blogging the Antwerp conference
Sep 19, 2016 Fortnightly links (19)
Sep 11, 2016 Is it the Cartan, Coxeter or Gram matrix?
Sep 06, 2016 Stacks Project Workshop
Sep 04, 2016 Fortnightly links (18)
Aug 30, 2016 Computing relations in Jacobi algebras
Aug 25, 2016 Abstracts for the Antwerp conference
Aug 21, 2016 Fortnightly links (17)
Aug 19, 2016 Do you want to be my colleague?
Aug 18, 2016 Two fuzzy projective lines
Aug 17, 2016 The ICRA award goes to Greg Stevenson and Qiu Yu
Aug 14, 2016 When is an algebraic geometer skilful enough?
Aug 07, 2016 Fortnightly links (16)
Jul 31, 2016 Announcing ncag.info
Jul 23, 2016 Fortnightly links (15)
Jul 10, 2016 Fortnightly links (14)
Jul 05, 2016 When is D(Qcoh X) compactly generated by a single perfect complex?
Jun 26, 2016 Fortnightly links (13)
Jun 12, 2016 Fortnightly links (12)
May 29, 2016 Fortnightly links (11)
May 22, 2016 On a conjecture by Novakovic
May 15, 2016 Fortnightly links (10)
May 11, 2016 New paper: Noncommutative quadrics and Hilbert schemes of points
May 01, 2016 Fortnightly links (9)
Apr 29, 2016 Do you want to be my colleague?
Apr 22, 2016 More cheat sheets
Apr 20, 2016 The Brauer group of Brauer-Severi varieties
Apr 17, 2016 Fortnightly links (8)
Apr 05, 2016 Non-commutative, derived and homotopical methods in geometry
Apr 03, 2016 Fortnightly links (7)
Mar 20, 2016 Fortnightly links (6)
Mar 06, 2016 Fortnightly links (5)
Feb 21, 2016 Fortnightly links (4)
Feb 09, 2016 Genera of complete intersection curves
Feb 07, 2016 Fortnightly links (3)
Jan 31, 2016 Announcement: IMAGINARY@Antwerpen
Jan 30, 2016 Announcement: MGM@UA
Jan 26, 2016 Nonrationality of the generic cubic fourfold
Jan 24, 2016 Fortnightly links (2)
Jan 10, 2016 Fortnightly links
Dec 28, 2015 Algebraic geometry fun facts for the festivities: Enriques surfaces are never complete intersections
Dec 27, 2015 Algebraic geometry fun facts for the festivities: genera of complete intersection curves
Dec 26, 2015 Algebraic geometry fun facts for the festivities: direct products of quasicoherent sheaves are not exact
Dec 25, 2015 Algebraic geometry fun facts for the festivities: absolute flatification
Dec 24, 2015 Algebraic geometry fun facts for the festivities: cohomology vanishing
Dec 23, 2015 "Look ma, no Hodge theory"
Nov 11, 2015 Simons Collaboration on Homological Mirror Symmetry
Nov 09, 2015 Today I learned...
Sep 26, 2015 A cheat sheet on recollements
Sep 05, 2015 Excellent notes on algebraic stacks
Aug 19, 2015 What makes the Kronecker quiver special?
Aug 16, 2015 Cohomology tables in Macaulay2
Jul 29, 2015 A map of Calabi--Yau 3-folds
Jul 28, 2015 Remote access for MathSciNet
Jul 15, 2015 le superficie algebriche
Mar 09, 2015 Works of Sasha Rosenberg
Mar 01, 2015 A new map of Spec Z[x]
Feb 24, 2015 Announcement for a seminar
Nov 27, 2014 Examples of spectral sequences in algebra and algebraic geometry
Nov 20, 2014 What to do if a proof is psychologically uncomfortable?
Nov 17, 2014 Bernhard Keller won the Prix Sophie Germain
Oct 30, 2014 Visualisation of Schubert classes in Gr(2,4) and Gr(2,5)
Oct 30, 2014 On rational surface singularities
Oct 23, 2014 Three filtrations on the Grothendieck ring of a scheme
Oct 16, 2014 Only five smooth projective toric Fano surfaces
Oct 09, 2014 What are Chern classes?
Oct 02, 2014 Why homotopy colimits in triangulated categories are defined the way they are
Aug 01, 2014 Comparison of topologies
Jul 24, 2014 New feature for the Stacks project: slogans
Jul 06, 2014 Notes on stratification of triangulated categories
Jun 17, 2014 New version of Hodge diamonds and Serre duality tables for complete intersections
Jun 13, 2014 Table of contents for Thomason--Trobaugh
Jun 07, 2014 Phantom categories do exist
Apr 04, 2014 Do phantom categories exist?
Mar 22, 2014 Serre's diagonal trick
Mar 05, 2014 Noncommutative geometry on the arXiv
Feb 23, 2014 Notes on depth and updates
Jan 29, 2014 Notes on Riemann-Roch, Serre duality and Grothendieck duality
Jan 29, 2014 Announcing a seminar
Jan 16, 2014 A visualisation of Serre duality and Hodge diamonds
Dec 31, 2013 The fppf topology is generated by Zariski coverings and surjective finite locally free morphisms
Nov 27, 2013 Modular group algebras of finite representation type
Nov 14, 2013 Possible noncommutative progress on the standard conjectures
Oct 25, 2013 Why Hochschild cohomology is not functorial
May 24, 2013 Every projective variety is a quiver Grassmannian: the algorithm
Apr 20, 2013 Autour de la Géométrie Algébrique Dérivée
Feb 16, 2013 Random thoughts about Rubik's cubes
Feb 09, 2013 GAGA in 24+epsilon tweets
Dec 14, 2012 An atlas of the affine line over the integers (Spec Z[x])
Sep 14, 2012 Perfect groups of infinite commutator length: example
Sep 11, 2012 Perfect groups of infinite commutator length: setup
Jun 21, 2012 Some trivia on derived subgroups
Mar 27, 2012 Enumerating all matrices in Jordan normal form
Oct 30, 2011 Meanwhile at #angs@t / angs+
Oct 06, 2011 The abc-conjecture
Aug 17, 2011 Solution's to Vakil's Foundations of Algebraic Geometry
Jun 19, 2011 Solutions to Tennison's Sheaf theory
May 08, 2011 An algorithm to determine the intersection multiplicity of two curves
Dec 01, 2010 Article on Grothendieck and an interesting quote
Nov 08, 2010 The Stacks Project
Oct 24, 2010 Polynomial division
Aug 20, 2010 Ingrid Daubechies elected as president of the International Mathematical Union

music

May 20, 2017 Fugue and the guitar
Mar 25, 2017 Nikita Koshkin's 24 preludes and fugues are now published
Apr 06, 2016 AlphaGo versus computer playback of music
Sep 13, 2015 Interactive analysis of Bach's Das Wohltemperierte Klavier
Sep 12, 2015 Linkdump: alpof
Dec 07, 2014 Brute forcing first species counterpoint
Jan 09, 2012 The flaw in all Western music is related to the Riemann zeta function
Dec 18, 2011 Alternating beams for semi-quavers in Lilypond
Sep 25, 2011 Counterpoint in Gregorian modes
Sep 17, 2011 Struggling with Oz
Sep 17, 2011 Some remarks on Gregorian modes
Aug 18, 2011 Development of the Fuxian counterpoint project is now available at GitHub
Aug 16, 2011 Installing the Mozart Programming System
Aug 16, 2011 Installing Strasheela
Aug 15, 2011 Computational composition: the kick start

personal

May 05, 2026 Moving from Jekyll to Hugo
Apr 26, 2025 I've joined the editorial board of Journal of Noncommutative Geometry
Jan 06, 2025 Updated contact information
Oct 24, 2024 Moving to Utrecht University
Feb 20, 2024 I've joined the editorial board of Experimental Mathematics
Aug 04, 2021 Starting at the University of Luxembourg
Apr 23, 2021 Ida Belmans
Mar 01, 2021 Moving to the University of Luxembourg
Mar 14, 2019 Moving to the University of Bonn
Oct 04, 2017 Starting my postdoc
Aug 26, 2016 Moving from WordPress to Jekyll
Jul 07, 2016 Stacks project website bug fixing
Jul 02, 2016 Stacks project citations
Feb 03, 2016 The Stacks project has 5000 pages
Dec 30, 2012 More 'Infinite Jest' web goodies
Sep 10, 2012 Personal update
Jun 06, 2011 A visual exploration of the filmography of James O. Incandenza and the world of David Foster Wallace's "Infinite Jest."
May 29, 2011 Math joke
Apr 18, 2011 Alice's Adventures in Wonderland, or 3 math novels
Jan 05, 2011 Ska comics
Dec 25, 2010 Photographs of the Paris metro
Dec 09, 2010 This is how I feel nowadays
Dec 03, 2010 A mathematical joke
Aug 27, 2010 Paris
Aug 16, 2010 Introduction