3 papers
math.HO2023
Topology of SO(3) For Kids
Orlin Stoytchev
We present a simple visual description of the topology of the space of three-dimensional rotations, requiring just intuition, imagination and no advanced math.
math.GR2020
A Class of Efficient Presentations of Finite Simple Groups
Orlin Stoytchev
We exhibit a new presentation of the (equilateral) Von Dyck groups , in terms of two generators of order satisfying three relations, one of which is Artin's…
math.GT2009
A Note on Topologically-Trivial Braids
Orlin Stoytchev
We give a simple characterization of braids that can be unplaited keeping separately their upper ends and their lower ends tied together