New York Journal of Mathematics
Volume 16 (2010) 629-649


Peter Krautzberger

On strongly summable ultrafilters

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Published: December 7, 2010
Keywords: Ultrafilters, Stone-Čech compactification, semigroup, idempotent ultrafilter, union ultrafilter, strongly summable ultrafilter
Subject: 03E75 (Primary) 54D80, 05D10 (Secondary)

We present some new results on strongly summable ultrafilters. As the main result, we extend a theorem by N. Hindman and D. Strauss on writing strongly summable ultrafilters as sums.


This work was partially supported by DFG grant KR 3818-1

Author information

Department of Mathematics, University of Michigan, Ann Arbor