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  • 1 Department of Mathematics, Al Jabal Al-Gharbi University, Zawia, Gharian, Libya
  • 2 Department of Mathematics, University of York, Heslington, York, YO10 5DD UK
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We examine, in a general setting, a notion of inverse semigroup of left quotients, which we call left I-quotients. This concept has appeared, and has been used, as far back as Clifford’s seminal work describing bisimple inverse monoids in terms of their right unit subsemigroups. As a consequence of our approach, we find a straightforward way of extending Clifford’s work to bisimple inverse semigroups (a step that has previously proved to be awkward). We also put some earlier work of Gantos into a wider and clearer context, and pave the way for further progress.

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