= Fabian Haiden
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<Fabian Haiden> studies connections among <geometry>, <dynamical systems> and <category theory>. His course notes <Dynamics, Stability, and Noncommutative Algebra by Fabian Haiden> develop <topological entropy> using covers and separated or <spanning sets> of trajectories, making orbit complexity into a quantitative invariant.
His research page connects these themes with stability conditions and categorical constructions. This illustrates how different mathematical descriptions can carry information about the same dynamics.https://people.math.harvard.edu/~haiden/[Research description and listed papers]{ref}
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