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Products of two idempotent transformations over arbitrary sets and vector spaces
Published online by Cambridge University Press: 17 April 2009
Abstract
In this paper we consider the characterisation of those elements of a transformation semigroup S which are a product of two proper idempotents. We give a characterisation where S is the endomorphism monoid of a strong independence algebra A, and apply this to the cases where A is an arbitrary set and where A is an arbitrary vector space. The results emphasise the analogy between the idempotent generated subsemigroups of the full transformation semigroup of a set and of the semigroup of linear transformations from a vector space to itself.
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- Copyright © Australian Mathematical Society 1998
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