3 citations · 6 across the 4 of their papers we have counts for
4 papers
Function classes and relational constraints stable under compositions with clones
Miguel Couceiro, Stephan Foldes
The general Galois theory for functions and relational constraints over arbitrary sets described in the authors' previous paper is refined by imposing algebraic conditions on relat…
On McMillan's theorem about uniquely decipherable codes
Stephan Foldes
Karush's proof of McMillan's theorem is recast as an argument involving polynomials with non-commuting indeterminates certain evaluations of which yield the Kraft sums of codes, pr…
The Lorentz group and its finite field analogues: local isomorphism and approximation
Stephan Foldes
Finite Lorentz groups acting on 4-dimensional vector spaces coordinatized by finite fields with a prime number of elements are represented as homomorphic images of countable, ratio…
A half-space approach to order dimension
Stephan Foldes, Jeno Szigeti
The aim of the present paper is to investigate the half-spaces in the convexity structure of all quasiorders on a given set and to use them in an alternative approach to classical…