Idempotents with polynomial coefficients
by Professor Alain Lascoux
Abstract: Idempotents of the symmetric group are sums of permutations, with complex coefficients, equal to their square. They have been first described by Young. We show that one can take more general coefficients, which are products of Vandermondes in $n$ indeterminates in the case of $S_n$.
For More Information: contact: Iwan Jensen. email: I.Jensen@ms.unimelb.edu.au