activity
20022021
most citedStrong martingale type and uniform smoothness

4 citations · 4 across the 5 of their papers we have counts for

collaborators

6 papers

cs.CE2021

Multicriteria asset allocation in practice

Kerstin Dächert, Ria Grindel, Elisabeth Leoff +3

In this paper we consider the strategic asset allocation of an insurance company. This task can be seen as a special case of portfolio optimization. In the 1950s, Markowitz propose…

math.FA2004★ 4 cited

Strong martingale type and uniform smoothness

Jörg Wenzel

We introduce stronger versions of the usual notions of martingale type p <= 2 and cotype q >= 2 of a Banach space X and show that these concepts are equivalent to uniform p-smoothn…

math.FA2004

The UMD constants of the summation operators

Jörg Wenzel

The UMD property of a Banach space is one of the most useful properties when one thinks about possible applications. This is in particular due to the boundedness of the vector-valu…

math.FA2003

On the Non-Equivalence of Rearranged Walsh and Trigonometric Systems in L_p

Aicke Hinrichs, Jörg Wenzel

We consider the question whether the trigonometric system can be equivalent to some rearrangement of the Walsh system in L_p for some p<>2. We show that this question is closely re…

math.FA2002

The average distance property of classical Banach spaces II

Aicke Hinrichs, J. Wenzel

A Banach space X has the average distance property (ADP) if there exists a unique real number r such that for each positive integer n and all x_1,...,x_n in the unit sphere of X th…

math.FA2002

Uniformly convex operators and martingale type

J Wenzel

The concept of uniform convexity of a Banach space was generalized to linear operators between Banach spaces and studied by Beauzamy [1976]. Under this generalization, a Banach spa…