Now showing items 1-4 of 4

• #### The algebraic combinatorial approach for low-rank matrix completion ﻿

[OWP-2013-05] (Mathematisches Forschungsinstitut Oberwolfach, 2013-03-14)
We propose an algebraic combinatorial framework for the problem of completing partially observed low-rank matrices. We show that the intrinsic properties of the problem, including which entries can be reconstructed, and ...
• #### Even-homogeneous supermanifolds on the complex projective line ﻿

[OWP-2013-02] (Mathematisches Forschungsinstitut Oberwolfach, 2013-03-14)
The classification of even-homogeneous complex supermanifolds of dimension $1|m$, $m<=3$, on $\mathbb{CP}^1$ up to isomorphism is given. An explicit description of such supermanifolds in terms of local charts and coordinates ...
• #### Invariants of Closed Braids via Counting Surfaces ﻿

[OWP-2012-15] (Mathematisches Forschungsinstitut Oberwolfach, 2012)
A Gauss diagram is a simple, combinatorial way to present a link. It is known that any Vassiliev invariant may be obtained from a Gauss diagram formula that involves counting subdiagrams of certain combinatorial types. In ...
• #### On the autonomous metric on the group of area-preserving diffeomorphisms of the 2-disc ﻿

[OWP-2012-16] (Mathematisches Forschungsinstitut Oberwolfach, 2012)
Let $D^2$ be the open unit disc in the Euclidean plane and let $G := Diff(D^2; area)$ be the group of smooth compactly supported area-preserving diffeomorphisms of $D^2$. For every natural number $k$ we construct an injective ...