1 citations · 1 across the 2 of their papers we have counts for
5 papers
Algorithm for Lang's Theorem
Arjeh M. Cohen, Scott H. Murray
We give an efficient algorithm for Lang's Theorem in split connected reductive groups defined over finite fields of characteristic greater than 3. This algorithm can be used to con…
Covers of Point-Hyperplane Graphs
Arjeh M. Cohen, E. J. Postma
We construct a cover of the non-incident point-hyperplane graph of projective dimension 3 for fields of characteristic 2. If the cardinality of the field is larger than 2, we obtai…
On a theorem of Artin
Arjeh M. Cohen, Luis Paris
We determine the epimorphisms from the Artin group of type onto the Coxeter group of type , in case is an irreducible Coxeter graph of spherical type,…
Linearity of Artin groups of finite type
Arjeh M. Cohen, David B. Wales
Recent results on the linearity of braid groups are extended in two ways. We generalize the Lawrence Krammer representation as well as Krammer's faithfulness proof for this linear…
Lie algebras generated by extremal elements
Arjeh M. Cohen, Anja Steinbach, Rosane Ushirobira +1
We study Lie algebras generated by extremal elements (i.e., elements spanning inner ideals of L) over a field of characteristic distinct from 2. We prove that any Lie algebra gener…