References
Berglund, J., H. Junghenn and P. Milnes,Compact right topological semigroups and generalizations of almost periodicity, Lecture Notes in Math. 663, Springer-Verlag, Berlin (1978).
Comfort, W.,Ultrafilters-some old and some new results, Bull. Amer. Math. Soc. 83 (1977), 417–455.
Van Douwen, E.,The Čech-Stone,compactification of a discrete cancellative groupoid, Manuscript.
Hindman, N.,Partitions and sums of integers with repetition, J. Comb. Theory (Ser. A) 27 (1979), 19–32.
Hindman, N.,Sums equal to products in βN, Semigroup Forum 21 (1980), 221–255.
Hindman, N.,Ultrafilters and Combinatorial number theory, Lecture Notes in Math. 751, Springer-Verlag, Berlin (1979), 119–184.
Author information
Authors and Affiliations
Additional information
Communicated by Karl H. Hofmann
The author gratefully acknowledges support from the National Science Foundation under Grant MCS81-00733.
Rights and permissions
About this article
Cite this article
Hindman, N. Minimal ideals and cancellation in BN. Semigroup Forum 25, 291–310 (1982). https://doi.org/10.1007/BF02573604
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02573604