Browsing 2012 by MFO Scientific Program "OWLF 2012"
Now showing items 1-2 of 2
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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 D2 be the open unit disc in the Euclidean plane and let G:=Diff(D2;area) be the group of smooth compactly supported area-preserving diffeomorphisms of D2. For every natural number k we construct an injective ...