Abstract
We provide a self-contained introduction to a nonstandard theory of ultrafilters.
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Di Nasso, M. (2015). Hypernatural Numbers as Ultrafilters. In: Loeb, P., Wolff, M. (eds) Nonstandard Analysis for the Working Mathematician. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-7327-0_11
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DOI: https://doi.org/10.1007/978-94-017-7327-0_11
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