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Frieder Ladisch

Rostock, Germany

Post Doc at University of Rostock

main interests: finite groups and their representation theory

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30
Is there a nice explanation for this curious fact about cyclic subgroups?
mathoverflow.net

26
Generating finite simple groups with $2$ elements
mathoverflow.net

22
Simplest examples of rings that are not isomorphic to their opposites
mathoverflow.net

17
What did Frobenius prove about $M_{12}$?
mathoverflow.net

15
Character tables and simple groups.
mathoverflow.net

14
Lemma on infinitely generated projective modules
mathoverflow.net

13
Does $\chi(1)^2=|G:Z(G)|$ for irreducible character of a finite group $G$ imply $G$ is solvable?
mathoverflow.net

12
Sign of permutation induced by modular exponentiation
mathoverflow.net

12
Examples of common false beliefs in mathematics
mathoverflow.net

12
Sylow subgroups of projective general linear groups
mathoverflow.net

12
Matrices: characterizing pairs $(AB, BA)$
mathoverflow.net

11
Strongly real elements of odd order in sporadic finite simple groups
mathoverflow.net

11
Order-increasing bijection from arbitrary groups to cyclic groups
mathoverflow.net

11
Exercise 6.5 in Humphrey's Book on Lie Algebras
math.stackexchange.com

10
characters on a finite group with `extremal' behaviour
mathoverflow.net

10
Can a projective solvable group be transitive?
mathoverflow.net

10
Characterization of group characters
mathoverflow.net

10
Finite group with a character having one nonzero absolute value
mathoverflow.net

10
Finite subgroups of $\mathrm{SO}(n)$ and $\mathrm{O}(n)$
mathoverflow.net

9
Finite groups in which every character has real values: grading the representations
mathoverflow.net

9
Representation theory of p-groups in particular upper tringular matrices over F_p
mathoverflow.net

9
Frobenius formula for the determinant
mathoverflow.net

9
Reference request: tensor induction
mathoverflow.net

8
When is the conjugation character almost multiplicity free?
mathoverflow.net

8
Number of squares in a finite group
mathoverflow.net

8
A sum over characters of $S_{2n}$ and zonal spherical functions of $(S_{2n},H_n)$
mathoverflow.net

8
Finite subgroups (not finite index, just finite) of the modular group
mathoverflow.net

7
Which finite nonabelian groups have long chains of subgroups as intervals in their subgroup lattice?
mathoverflow.net

7
Rings with a finite maximal ideal
mathoverflow.net

7
Rings in which every module has an injective image
mathoverflow.net

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