Steven Duplij
 SOME ABSTRACT PROPERTIES OF SEMIGROUPS APPEARING IN SUPERCONFORMAL
THEORIES
(27K, TeX)

ABSTRACT.  A new type of semigroups which appears while dealing with $N=1$
superconformal symmetry in superstring theories is considered. The ideal
 series having
unusual abstract properties is constructed. Various idealisers are
introduced and studied. The ideal quasicharacter is defined. Green's
relations are found and their connection
with the ideal quasicharacter is established.