D-semigroups and constellations
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DOI: 10.1007/s00233-017-9851-z
Abstract: In a result generalising the Ehresmann–Schein–Nambooripad Theorem relating inverse semigroups to inductive groupoids, Lawson has shown that Ehresmann semigroups correspond to certain types of ordered (small) categories he calls Ehresmann categories. An important special case… read more here.
Keywords: ehresmann semigroups; restriction; one sided; semigroups constellations ... See more keywords