1 citations · 1 across the 2 of their papers we have counts for
8 papers
Splendid Morita equivalences for principal blocks with semidihedral defect groups
Shigeo Koshitani, Caroline Lassueur, Benjamin Sambale
We classify principal blocks of finite groups with semidihedral defect groups up to splendid Morita equivalence. This completes the classification of all principal -blocks of ta…
Trivial source endo-trivial modules for finite groups with a semi-dihedral Sylow -subgroup
Shigeo Koshitani, Caroline Lassueur
We finish off the classification of the endo-trivial modules of finite groups with Sylow -subgroups isomorphic to a semi-dihedral -group started by Carlson, Mazza and Thévena…
Trivial source characters in blocks with cyclic defect groups
Shigeo Koshitani, Caroline Lassueur
We describe the ordinary characters of trivial source modules lying in blocks with cyclic defect groups relying on their recent classification in terms of paths on the Brauer tree…
Splendid Morita equivalences for principal blocks with generalised quaternion defect groups
Shigeo Koshitani, Caroline Lassueur
We prove that splendid Morita equivalences between principal blocks of finite groups with dihedral Sylow -subgroups realised by Scott modules can be lifted to splendid Morita eq…
On theorems of Brauer-Nesbitt and Brandt for characterizations of small block algebras
Shigeo Koshitani, Taro Sakurai
In 1941, Brauer-Nesbitt established a characterization of a block with trivial defect group as a block with where is the number of irreducible ordinary charac…
Broué's abelian defect group conjecture for the sporadic simple Janko group J_4 revisited
Shigeo Koshitani, Jürgen Müller, Felix Noeske
We show that the 3-block of the sporadic simple Janko group J_4 with defect group C_3 x C_3, and the principal 3-block of the alternating group A_8 are Puig equivalent, answering a…