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math.RA2020★ 6 cited
Filtering germs: Groupoids associated to inverse semigroups
Becky Armstrong, Lisa Orloff Clark, Astrid an Huef +2
We investigate various groupoids associated to an arbitrary inverse semigroup with zero. We show that the groupoid of filters with respect to the natural partial order is isomorphi…
math.OA2020
The C*-algebra of the Boidol group
Ying-Fen Lin, Jean Ludwig
The Boidol group is the smallest non-*-regular exponential Lie group. It is of dimension 4 and its Lie algebra is an extension of the Heisenberg Lie algebra by the reals with the r…