Browsing 2014 by MFO Scientific Program "OWLF 2013"

Now showing items 1-3 of 3

Algebraic Matroids with Graph Symmetry

[OWP-2014-02] Király, Franz J.; Rosen, Zvi; Theran, Louis (Mathematisches Forschungsinstitut Oberwolfach, 2014)

This paper studies the properties of two kinds of matroids: (a) algebraic matroids and (b) finite and infinite matroids whose ground set have some canonical symmetry, for example row and column symmetry and transposition ...
An Explicit Formula for the Dirac Multiplicities on Lens Spaces

[OWP-2014-19] Boldt, Sebastian; Lauret, Emilio A. (Mathematisches Forschungsinstitut Oberwolfach, 2014)

We present a new description of the spectrum of the (spin-) Dirac operator $D$ on lens spaces. Viewing a spin lens space $L$ as a locally symmetric space $\Gamma \setminus Spin(2m)/Spin(2m-1)$ and exploiting the representation ...
Spherical Actions on Flag Varieties

[OWP-2014-04] Avdeev, Roman; Petukhov, Alexey (Mathematisches Forschungsinstitut Oberwolfach, 2014-04-25)

For every finite-dimensional vector space $V$ and every $V$ -flag variety $X$ we list all connected reductive subgroups in $GL(V)$ acting spherically on $X$ .