31 citations · 125 across the 37 of their papers we have counts for
45 papers
Multiband linear cellular automata and endomorphisms of algebraic vector groups
Jakub Byszewski, Gunther Cornelissen
We propose a correspondence between certain multiband linear cellular automata - models of computation widely used in the description of physical phenomena - and endomorphisms of c…
Dynamics of endomorphisms of algebraic groups
Jakub Byszewski, Gunther Cornelissen, Marc Houben
Let denote an endomorphism of a smooth algebraic group over the algebraic closure of a finite field, and assume all iterates of have finitely many fixed points. Steinbe…
Problems hard for treewidth but easy for stable gonality
Hans L. Bodlaender, Gunther Cornelissen, Marieke van der Wegen
We show that some natural problems that are XNLP-hard (which implies W[t]-hardness for all t) when parameterized by pathwidth or treewidth, become FPT when parameterized by stable…
Twisted isospectrality, homological wideness and isometry
Gunther Cornelissen, Norbert Peyerimhoff
Given a manifold (or, more generally, a developable orbifold) and two closed Riemannian manifolds and with a finite covering map to , we give a spectral char…
Automata and finite order elements in the Nottingham group
Jakub Byszewski, Gunther Cornelissen, Djurre Tijsma
The Nottingham group at 2 is the group of (formal) power series in the variable with coefficients from the field with two elements, where the…
Dynamically affine maps in positive characteristic
Jakub Byszewski, Gunther Cornelissen, Marc Houben +1
We study fixed points of iterates of dynamically affine maps (a generalisation of Lattès maps) over algebraically closed fields of positive characteristic . We present and study…