Uncountably many existence varieties of orthodox locally idempotent semigroups

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Authors

KAĎOUREK Jiří

Year of publication 2004
Type Article in Periodical
Magazine / Source Mathematical Proceedings of the Cambridge Philosophical Society
MU Faculty or unit

Faculty of Science

Citation
Field General mathematics
Keywords existence variety of orthodox semigroups; orthodox locally idempotent semigroup
Description It is shown that the cardinality of the sublattice of all existence varieties of orthodox semigroups occurring in the interval between the variety of all idempotent semigroups and the existence variety of all orthodox locally idempotent semigroups is that of the continuum.
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