Zobrazeno 1 - 10
of 149
pro vyhledávání: '"Oertel, Ulrich"'
Autor:
Rauch, Sebastian, Eichhorn, Klaus-Jochen, Oertel, Ulrich, Stamm, Manfred, Kuckling, Dirk, Uhlmann, Petra
Publikováno v:
Soft matter 2012;8:10260–10270, ISSN: 1744-683X
Here, we report on a new temperature responsive polymer brush system with a terminal “click” functionality. Bifunctionalized poly(N-isopropylacrylamide) (PNiPAAm) with distinct functional end groups was synthesized by atom transfer radical polyme
Externí odkaz:
https://tud.qucosa.de/id/qucosa%3A27823
https://tud.qucosa.de/api/qucosa%3A27823/attachment/ATT-0/
https://tud.qucosa.de/api/qucosa%3A27823/attachment/ATT-0/
Autor:
Oertel, Ulrich
We generalize H. Seifert's algorithm for finding a Seifert surface for a knot or link. The generalization applies to "framed oriented measured lamination links." For knots, a Seifert surface determines a unique framing. In our setting, we analyze the
Externí odkaz:
http://arxiv.org/abs/1708.00061
Autor:
Oertel, Ulrich
We introduce and define "oriented framed measured lamination links" in a 3-manifold $M$. These generalize oriented framed links in 3-manifolds, and are confined to 2-dimensional improperly embedded subsurfaces of the 3-manifold. Just as some framed l
Externí odkaz:
http://arxiv.org/abs/1707.08094
Autor:
Oertel, Ulrich
We describe a construction of ordered algebraic structures (ordered abelian semigroups, ordered commutative semirings, etc.) and describe applications to codimension-1 laminations. For a suitable ordered semi- algebraic structure $\mathbb L$ and meas
Externí odkaz:
http://arxiv.org/abs/1407.7066
Autor:
Oertel, Ulrich
We describe spaces of essential finite height (measured) laminations in a surface $S$ using a parameter space we call $\mathbb S$, an ordered semi-ring. We show that for every finite height essential lamination $L$ in $S$, there is an action of $\pi_
Externí odkaz:
http://arxiv.org/abs/1404.3228
Autor:
Oertel, Ulrich
We calculate a projective space of essential measured laminations in a surface pair, which will be used in another paper to help describe spaces of "finite height laminations."
Comment: 31 pages
Comment: 31 pages
Externí odkaz:
http://arxiv.org/abs/1404.3215
Autor:
Charitos, Charalampos, Oertel, Ulrich
If M is a manifold with compressible boundary, we analyze essential disks in M, as well as incompressible, but not necessarily boundary incompressible, surfaces in M. We are most interested in the case where M is a handlebody or compression body. The
Externí odkaz:
http://arxiv.org/abs/1005.0680
Autor:
Oertel, Ulrich
We analyze the mapping class group of extendible automorphisms of the exterior boundary W of a compression body of dimension 3 or 4, which extend over the compression body (Q,V), where V is the interior boundary. Those that extend as automorphisms of
Externí odkaz:
http://arxiv.org/abs/math/0607444
Autor:
Carvalho, Leonardo N., Oertel, Ulrich
We classify isotopy classes of automorphisms (self-homeomorphisms) of 3-manifolds satisfying the Thurston Geometrization Conjecture. The classification is similar to the classification of automorphisms of surfaces developed by Nielsen and Thurston, e
Externí odkaz:
http://arxiv.org/abs/math/0510610
Autor:
Oertel, Ulrich
We prove results showing that the existence of essential maps of surfaces in a manifold M' obtained from a 3-manifold M by Dehn filling implies the existence of essential maps of surfaces in M.
Comment: 18 pages, 13 figures. To appear Topology a
Comment: 18 pages, 13 figures. To appear Topology a
Externí odkaz:
http://arxiv.org/abs/math/0307283