Corrected version of

Invariants of orthogonal $G$-modules from
the character table.

Gabriele Nebe 
Lehrstuhl B f\"ur Mathematik,
 RWTH Aachen, 
Templergraben 64,
52062 Aachen,
Germany
URL:
http://samuel.math.rwth-aachen.de/~LBFM/gabi/


Abstract:
Character theoretic methods
using Clifford algebras are developed
 to describe the quadratic forms on a vector space $V$ that are
invariant under a finite subgroup of $GL(V)$.