• Asymptotic geometry and Delta-points 

      Abrahamsen, Trond Arnold; Lima, Vegard; Martiny, Andre; Perreau, Yoël (Peer reviewed; Journal article, 2022)
      We study Daugavet- and Δ-points in Banach spaces. A norm one element x is a Daugavet-point (respectively, a Δ-point) if in every slice of the unit ball (respectively, in every slice of the unit ball containing x) you can ...
    • Delta-points and their implications for the geometry of Banach spaces 

      Abrahamsen, Trond Arnold; Aliaga, Ramon J.; Lima, Vegard; Martiny, Andre; Perreau, Yoël; Prochazka, Antonín; Veeorg, Triinu (Peer reviewed; Journal article, 2024)
    • Two properties of Müntz spaces 

      Abrahamsen, Trond Arnold; Leraand, Aleksander; Martiny, Andre; Nygaard, Olav Kristian (Journal article; Peer reviewed, 2017)
      We show that Müntz spaces, as subspaces of C[0, 1], contain asymptotically isometric copies of c0 and that their dual spaces are octahedral.