13 citations · 25 across the 16 of their papers we have counts for
18 papers
On Noether's Degree Bound for Finite Group Schemes
Gregor Kemper, Christian Liedtke, Christiane Ott
This paper establishes Noether's classical degree bound for finite and linearly reductive group schemes. On the other hand, we provide examples of infinitesimal grou…
Invariant Theory: a Third Lease of Life
Gregor Kemper
In 1993, just about a century after the epoch of Classical Invariant Theory and almost 30 years after Mumford's seminal book on Geometric Invariant Theory, Bernd Sturmfels approach…
Can a Ground-Based Vehicle Hear the Shape of a Room?
Mireille Boutin, Gregor Kemper
Assume that a ground-based vehicle moves in a room with walls or other planar surfaces. Can the vehicle reconstruct the positions of the walls from the echoes of a single sound eve…
Separating invariants over finite fields
Gregor Kemper, Artem Lopatin, Fabian Reimers
We determine the minimal number of separating invariants for the invariant ring of a matrix group over the finite field . We show th…
Valuative dimension and monomial orders
Gregor Kemper, Ihsen Yengui
The main result from this note provides a constructive characterization of the valuative dimension, which bears a strong analogy to Lombardi's constructive characterization of the…
A Drone Can Hear the Shape of a Room
Mireille Boutin, Gregor Kemper
We show that one can reconstruct the shape of a room with planar walls from the first-order echoes received by four non-planar microphones placed on a drone with generic position a…