Keywords = a − minimal set
TRANSFORMATION SEMIGROUPS AND EXACT SEQUENCES

Volume 29, Issue 3, November and December 2005, Pages 481-495

F. AYATOLLAH ZADEH SHIRAZI


COUNTEREXAMPLES IN a−MINIMAL SETS

Volume 28, Issue 2, November and December 2004, Pages 235-256

F. AYATOLLAH ZADEH SHIRAZI; M. SABBAGHAN