DM
2008
14 years 17 days ago
2008
In the present note, we investigate schemes S in which each element s satisfies ns 2 and nss = 2. We show that such a scheme is schurian. More precisely, we show that it is isomor...
AAECC
1993
Springer
14 years 4 months ago
1993
Springer
We give estimates for exponential sums over finite fields in several variables. We study the case where the phase is either quadratic or more generally invariant under the action ...
ISSAC
1998
Springer
14 years 4 months ago
1998
Springer
This note presents a new algorithm for the computation of the set of normal subgroups of a finite group. It is based on lifting via homomorphic images.