a1 Department of Mathematics, Box 8205 North Carolina State University, Raleigh, NC 27695–8205, USA, e-mail: email@example.com
Let M be a reductive algebraic monoid with zero and unit group G. We obtain a description of the submonoid generated by the idempotents of M. In particular, we find necessary and sufficient conditions for M\G to be idempotent generated.
(Received August 19 2002)
(Revised January 12 2005)
2000 Mathematics subject classification