Commutative cancellative semigroups with two generators. (English) Zbl 0244.20074


20M05 Free semigroups, generators and relations, word problems
20M99 Semigroups
Full Text: EuDML


[1] A. H. Clifford, G. B. Preston: The Algebraic Theory of Semigroups. Vol. I, American Math. Society, Providence, R. I., 1961. · Zbl 0111.03403
[2] J. B. Fraleigh: A First Course in Abstract Algebra. Addison Wesley, Reading, Mass., 1967. · Zbl 0154.26303
[3] M. Petrich: On the structure of a class of commutative semigroups. Czechoslovak Math. J., 14 (1964), 147-153. · Zbl 0143.03403
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