Browsing 2012 by MSC "17"

Now showing items 1-2 of 2

Invariant Four-forms and Symmetric Pairs

[OWP-2012-03] Moroianu, Andrei; Semmelmann, Uwe (Mathematisches Forschungsinstitut Oberwolfach, 2012-04-24)

We give criteria for real, complex and quaternionic representations to define $s$ -representations, focusing on exceptional Lie algebras defined by spin representations. As applications, we obtain the classification of ...
On commuting varieties of nilradicals of Borel subalgebras of reductive Lie algebras

[OWP-2012-14] Goodwin, Simon M.; Röhrle, Gerhard (Mathematisches Forschungsinstitut Oberwolfach, 2012-12-04)

Let $G$ be a connected reductive algebraic group defined over an algebraically closed field $\mathbb{k}$ of characteristic zero. We consider the commuting variety $\mathcal{C}(\mathfrak{u})$ of the nilradical $\mathfrak{u}$ ...