25 citations · 73 across the 17 of their papers we have counts for
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math.AC2014★ 5 cited
Invariants and Separating Morphisms for Algebraic Group Actions
Emilie Dufresne, Hanspeter Kraft
The first part of this paper is a refinement of Winkelmann's work on invariant rings and quotients of algebraic groups actions on affine varieties, where we take a more geometric p…
math.AC2010★ 19 cited
Degree bounds for separating invariants
Martin Kohls, Hanspeter Kraft
If V is a representation of a linear algebraic group G, a set S of G-invariant regular functions on V is called separating if the following holds: If two elements v,v' from V can b…
math.AC2004★ 1 cited
A result of Hermite and equations of degree 5 and 6
Hanspeter Kraft
A classical result from 1861 due to Hermite says that every separable equation of degree 5 can be transformed into an equation of the form x^5 + b x^3 + c x + d = 0. Later this was…