Browsing 2023 by Issue Date

Now showing items 1-3 of 3

    • Flag-Accurate Arrangements 

      [OWP-2023-01] Mücksch, Paul; Röhrle, Gerhard; Tran, Tan Nhat (Mathematisches Forschungsinstitut Oberwolfach, 2023-02-13)
      In [MR21], the first two authors introduced the notion of an accurate arrangement, a particular notion of freeness. In this paper, we consider a special subclass, where the property of accuracy stems from a flag of flats ...

    • Real Enumerative Invariants Relative to the Anti-Canonical Divisor and their Refinement 

      [OWP-2023-02] Itenberg, Ilia; Shustin, Eugenii (Mathematisches Forschungsinstitut Oberwolfach, 2023-03-24)
      We introduce new invariants of the projective plane (and, more generally, of certain toric surfaces) that arise from the appropriate enumeration of real elliptic curves. These invariants admit a refinement (according to ...

    • Computer Algebra with GAP 

      [OWP-2023-03] Piterman, Kevin I.; Vendramin, Leandro (Mathematisches Forschungsinstitut Oberwolfach, 2023-04-13)
      This monograph includes the following topics: a basic introduction to the language, basic arithmetic, permutations, matrices, polynomial rings, finite fields, finite and finitely presented groups, small groups, group ...