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A note on a problem of hua

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References

  1. Jacobson, N., Lectures in Abstract Algebra, Vol. 1 (1964), D. Van Nostrand Company, Inc.

  2. Lentin, A. and M. P. Schützenberger, A combinatorial problem in theory of free monoid, in Combinatorial Mathematics and its Applications, Proceedings of the Conference held at University of North Carolina (1967), 128–144.

  3. Lyndon, R.C. and M. P. Schützenberger, The equation aM = bNcP in a free group, Michigan Math. J. 9 (1962), 289–298.

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  4. Shyr, H.J., Every subsemigroup of a free semigroup with zero is not an R-semigroup. Semigroup Forum Vol. 12 (1976), 380–382.

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Authors and Affiliations

  1. Department of Mathematics, The University of Western Ontario, London, Ontario, Canada

    C. M. Reis & H. J. Shyr

Authors
  1. C. M. Reis
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  2. H. J. Shyr
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Additional information

Communicated by Robert McFadden

Part of this research has been supported by Grant A7877 of the National Research Council of Canada.

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Reis, C.M., Shyr, H.J. A note on a problem of hua. Semigroup Forum 14, 7–13 (1977). https://doi.org/10.1007/BF02194650

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  • DOI: https://doi.org/10.1007/BF02194650

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