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Maximal Quaternion Orders in Quadratic Extensions - in Hurwitz’s Diaries
[OWP-2020-16] (Mathematisches Forschungsinstitut Oberwolfach, 2020-08-03)
We present and comment on some unpublished work of Adolf Hurwitz on quaternion arithmetic from his diaries.
Braidoids
[OWP-2020-17] (Mathematisches Forschungsinstitut Oberwolfach, 2020-09-03)
Braidoids generalize the classical braids and form a counterpart theory to the theory of planar knotoids, just as the theory of braids does for the theory of knots. In this paper, we introduce the notion of braidoids in ...