34 citations · 57 across the 13 of their papers we have counts for
13 papers
Symmetry vs Symmetry
Michiel Hazewinkel
This preprint deals with the symmetry of parametrized families of systems and the changes therein as the parameter changes. There are (at least ?) two kinds of symmetry: generic an…
Differential operators on non-commutative algebras
Michiel Hazewinkel
There is a relatively well-known description of the algebra of (higher order) left differential operators on commutative algebras. This note gives a construction of similar flavor…
Hasse-Schmidt derivations and the Hopf algebra of noncommutative symmetric functions
Michiel Hazewinkel
Let A be an associative algebra (or any other kind of algebra for that matter). A derivation on A is an endomorphism \del of the underlying Abelian group of A such that \del(ab)=a(…
Niceness theorems
Michiel Hazewinkel
Many things in mathematics seem lamost unreasonably nice. This includes objects, counterexamples, proofs. In this preprint I discuss many examples of this phenomenon with emphasis…
Witt vectors. Part 1
Michiel Hazewinkel
This is the first part of a 2 part survey on the functor of the big and p-adic Witt vectors.
Coherence and uniqueness theorems for averaging processes in statistical mechanics
Michiel Hazewinkel, Hugo H Torriani
Let S be the set of scalings 1, 2,3,4, ... and consider the corresponding set of scaled lattices in the plane. In this paper averaging operators are defined for plaquette functions…