Sökning: "Petter Östlund"

Hittade 2 avhandlingar innehållade orden Petter Östlund.

1. 1. Energy transport by random fields

   Författare :Petter Östlund; KTH; []
   Nyckelord :partial coherence; radiometry; energy transport;

   Sammanfattning : .... LÄS MER

3. 2. Invariants of knot diagrams and diagrammatic knot invariants

   Författare :Olof-Petter Östlund; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mathematics; Knot theory; knot diagram; plane curve; Reidemeister move; finite degree invariant; combinatorial knot invariant; Gauss diagram; MATEMATIK; MATHEMATICS; MATEMATIK; matematik; Mathematics;

   Sammanfattning : Two knot diagrams describe isotopic knots if and only if they can be connected by a sequence of planar isotopies and Reidemeister moves (cusp-, self-tangency-, and triple point moves). In this dissertation classes of knot diagrams, Reidemeister moves, and relations between sequences of Reidemeister moves are investigated, in a manner inspired by V. LÄS MER