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DTC ultrafilters on groups |
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| Authors: | Pachl Jan Steprāns Juris |
| Institution: | 1.Department of Mathematics and Statistics, York University, Toronto, ON, Canada ; |
| Abstract: | Semigroup Forum - We say that an ultrafilter on an infinite group G is DTC if it determines the topological centre of the semigroup $$\beta G$$ . If G has a subgroup of finite index in which... |
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