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    • Cosets in inverse semigroups and inverse subsemigroups of finite index 

      AlAli, Amal (Heriot-Watt University Mathematical and Computer Sciences, 2016-07)
      The index of a subgroup of a group counts the number of cosets of that subgroup. A subgroup of finite index often shares structural properties with the group, and the existence of a subgroup of finite index with some ...