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Preprint Number 1545

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1545. Isaac Goldbring
A nonstandard take on central sets

Submission date: 20 December 2018


We present the basic theory of central subsets of semigroups from the nonstandard perspective. A key feature of this perspective is the replacement of the algebra of ultrafilters with the algebra of elements of iterated hyperextensions, a technique first employed by Mauro Di Nasso.

Mathematics Subject Classification:

Keywords and phrases:

Full text arXiv 1812.08362: pdf, ps.

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