Browsing 2026 by MFO Scientific Program "OWRF 2026"

Now showing items 1-3 of 3

    • On Wall-Crossing Invariant Combinations of Welschinger Numbers for Rational Surfaces with a Conic Bundle 

      [OWP-2026-06] Finashin, Sergey; Kharlamov, Viatcheslav (Mathematisches Forschungsinstitut Oberwolfach, 2026-09)
      We refine the real enumerative invariants insensitive to changes in the real structure introduced in our previous paper on del Pezzo surfaces, and extend these refined invariants to arbitrary rational surfaces. The ...

    • Regularity for Vector Fields, Hodge Decomposition and Green Formula in Lipschitz Domains 

      [OWP-2026-04] Aibeche, Aissa; Amrouche, Chérif; Lewintan, Peter (Mathematisches Forschungsinstitut Oberwolfach, 2026-09)
      For a bounded Lipschitz domain $\Omega \subset \mathbb{R}^3$, neither necessarily simply connected nor with connected boundary $\Gamma$, we prove a new Hodge-type decomposition: every $u \in H(\operatorname{curl}, \Omega)$ ...

    • Spherical Subgroups in Reductive Algebraic Groups 

      [OWP-2026-03] Knop, Friedrich; Röhrle, Gerhard (Mathematisches Forschungsinstitut Oberwolfach, 2026-07)
      In [KR15], we determined all spherical affine homogeneous varieties for simple algebraic groups in arbitrary characteristic. The present paper extends this classification to semisimple groups. This generalizes work done ...