Semigroup with involution: Difference between revisions

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The projection ''e'' is in fact uniquely determined by ''x''.<ref name="BeltramettiCassinelli2010"/>
 
More recently, Baer *-semigroups have been also called '''Foulis semigroups''', after [[David James Foulis]] who studied them in depth.<ref name="Blyth2006"/><ref>Harding, John. “Daggers, Kernels, Baer *-Semigroups, and Orthomodularity.” ''Journal of Philosophical Logic''. April 6, 2013. {{cite doi|10.1007/s10992-013-9275-5}}</ref>
 
=== Examples and applications ===