19 citations · 56 across the 12 of their papers we have counts for
15 papers
On separating fixed points from zero by invariants
Jonathan Elmer, Martin Kohls
Assume a fixed point v in a G-module V can be separated from zero by a homogeneous invariant of degree dp^r where p>0 is the characteristic of the ground field k and p, d are copri…
On Cohen-Macaulayness and depth of ideals in invariant rings
Martin Kohls, Müfit Sezer
We investigate the presence of Cohen-Macaulay ideals in invariant rings and show that an ideal of an invariant ring corresponding to a modular representation of a -group is not…
Degree of reductivity of a modular representation
Martin Kohls, Müfit Sezer
For a finite dimensional representation of a group over a field , the degree of reductivity is the smallest degree such that every nonzero fixed point $v\in…
Zero-separating invariants for linear algebraic groups
Jonathan Elmer, Martin Kohls
Let be a linear algebraic group over a field , and let be a -module. Recall that the nullcone of is the set of points in with the property that $f(v)=…
Zero-separating invariants for finite groups
Jonathan Elmer, Martin Kohls
We fix a field $\kk$ of characteristic . For a finite group denote by and respectively the minimal number , such that for any finite dimensional representat…
On the Top Degree of Coinvariants
Martin Kohls, Müfit Sezer
For a finite group acting faithfully on a finite dimensional -vector space , we show that in the modular case, the top degree of the vector coinvariants grows unboundedly…