• Auslander's formula and correspondence for exact categories 

      Henrard, Ruben; Kvamme, Sondre; van Roosmalen, Adam-Christiaan (Peer reviewed; Journal article, 2022)
      The Auslander correspondence is a fundamental result in Auslander-Reiten theory. In this paper we introduce the category of admissibly finitely presented functors and use it to give a version of Auslander correspondence ...
    • Auslander-Gorenstein algebras and precluster tilting 

      Iyama, Osamu; Solberg, Øyvind (Journal article; Peer reviewed, 2018)
      We generalize the notions of n-cluster tilting subcategories and τselfinjective algebras into n-precluster tilting subcategories and τn-selfinjective algebras, where we show that a subcategory naturally associated to ...
    • Change of rings and singularity categories 

      Oppermann, Steffen; Psaroudakis, Chrysostomos; Stai, Torkil Utvik (Journal article, 2019)
      We investigate the behavior of singularity categories and stable categories of Gorenstein projective modules along a morphism of rings. The natural context to approach the problem is via change of rings, that is, the ...
    • Deformations and Balian-Low theorems for Gabor frames on the adeles 

      Enstad, Ulrik Bo Rufus; Jakobsen, Mads Sielemann; Luef, Franz; Omland, Tron (Journal article; Peer reviewed, 2022)
    • Geometric Hodge filtered complex cobordism 

      Haus, Knut Bjarte; Quick, Gereon (Peer reviewed; Journal article, 2023)
      We construct a geometric cycle model for a Hodge filtered extension of complex cobordism for every smooth manifold with a filtration on its de Rham complex with complex coefficients. Using a refinement of the Pontryagin–Thom ...
    • The gradient flow of infinity-harmonic potentials 

      Lindqvist, Peter; Lindgren, Erik Kristian (Peer reviewed; Journal article, 2021)
      We study the streamlines of ∞-harmonic functions in planar convex rings. We include convex polygons. The points where streamlines can meet are characterized: they lie on certain curves. The gradient has constant norm along ...
    • Homotopy-coherent algebra via Segal conditions 

      Chu, Hongyi; Haugseng, Rune (Peer reviewed; Journal article, 2021)
      Many homotopy-coherent algebraic structures can be described by Segal-type limit conditions determined by an “algebraic pattern”, by which we mean an ∞-category equipped with a factorization system and a collection of ...
    • Monotone, free, and boolean cumulants: a shuffle algebra approach 

      Ebrahimi-Fard, Kurusch; Patras, Frederic (Journal article; Peer reviewed, 2018)
      The theory of cumulants is revisited in the “Rota way”, that is, by following a combinatorial Hopf algebra approach. Monotone, free, and boolean cumulants are considered as infinitesimal characters over a particular ...
    • Pair Correlation estimates for the zeros of the zeta function via semidefinite programming 

      Chirre, Andrés; Gonçalves, Felipe; De Laat, David (Peer reviewed; Journal article, 2020)
      In this paper we study the distribution of the non-trivial zeros of the Riemann zeta-function ζ(s) (and other L-functions) using Montgomery's pair correlation approach. We use semidefinite programming to improve upon ...
    • The multiplicative Hilbert matrix 

      Brevig, Ole Fredrik; Perfekt, Karl-Mikael; Seip, Kristian; Siskakis, Aristomenis; Vukotic, Dragan (Journal article; Peer reviewed, 2016)
    • Uniqueness and properties of distributional solutions of nonlocal equations of porous medium type 

      del Teso, Félix; Endal, Jørgen; Jakobsen, Espen Robstad (Journal article; Peer reviewed, 2017)
      We study the uniqueness, existence, and properties of bounded distributional solutions of the initial value problem for the anomalous diffusion equation ∂tu−Lμ[φ(u)]=0. Here Lμ can be any nonlocal symmetric degenerate ...