On three approaches to conjugacy in semigroups

  title={On three approaches to conjugacy in semigroups},
  author={Volodymyr Mazorchuk},
We compare three approaches to the notion of conjugacy for semigroups, the first one via the transitive closure of the uv ∼ vu relation, the second one via an action of inverse semigroups on themselves by partial transformations, and the third one via characters of finitedimensional representations. 

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