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The Lattice of One-Sided Congruences on an Inverse Semigroup
[article]

2019
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arXiv
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pre-print

We build on the description of left congruences on an inverse semigroup in terms of the kernel and trace due to Petrich and Rankin. The notion of an inverse kernel for a left congruence is developed. Various properties of both the trace and inverse-kernel are discussed, in particular that both the trace and inverse-kernel maps are onto ∩-homomorphisms. The lattice of left congruences is identified as a subset of the direct product of the lattice of congruences on the idempotents and the lattice

arXiv:1901.11455v1
fatcat:e6roeyxhj5dtdlciz3wk2c2otq