13 citations · 49 across the 16 of their papers we have counts for
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Groups with anticentral elements
Frieder Ladisch
We study finite groups with elements such that . (Such elements generalize fixed-point-free automorphisms of finite group…
Classification of Affine Symmetry Groups of Orbit Polytopes
Erik Friese, Frieder Ladisch
Let be a finite group acting linearly on a vector space . We consider the linear symmetry groups of orbits , where the \emph{linear sy…
Groups with a nontrivial nonideal kernel
Frieder Ladisch
We classify finite groups , such that the group algebra, (over the field of rational numbers ), is the direct product of the group algebra $\mathbb{Q}[…
On Clifford theory with Galois action
Frieder Ladisch
Let be a finite group, a normal subgroup of and . Let be a subfield of the complex numbers and assume that t…
The Schur-Clifford subgroup of the Brauer-Clifford group
Frieder Ladisch
We define a Schur-Clifford subgroup of Turull's Brauer-Clifford group, similar to the Schur subgroup of the Brauer group. The Schur-Clifford subgroup contains exactly the equivalen…
Character correspondences above fully ramified sections and Schur indices
Frieder Ladisch
Let N be a finite group of odd order and A a finite group that acts on N such that the orders of N and A are coprime. Isaacs constructed a natural correspondence between the set Ir…