# Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg

## List of Papers (Total 13)

#### Statistics of orderings

In this paper, we study a Ramsey type problems dealing with the number of ordered subgraphs present in an arbitrary ordering of a larger graph. Our first result implies that for every vertex ordered graph G on k vertices and any stochastic vector $$\overrightarrow{a}$$ with k! entries, there exists a graph H with the following property: for any linear order of the vertices of H...

#### Geometric aspects of transversal Killing spinors on Riemannian flows

We study a Killing spinor type equation on spin Riemannian flows. We prove integrability conditions and partially classify those flows carrying non-trivial solutions.