Geodesic
Subtraction semigroups
Mathematica Bohemica, Tome 120 (1995) no. 4, pp. 445-447

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MR Zbl
A subtraction semigroup is a semigroup $(A,\ldotp,-)$ with a further operation "$-$" added, called subtraction and satisfying certain axioms. The paper concerns a problem by B. M. Schein concerning the structure of multiplication in a subtraction semigroup.
A subtraction semigroup is a semigroup $(A,\ldotp,-)$ with a further operation "$-$" added, called subtraction and satisfying certain axioms. The paper concerns a problem by B. M. Schein concerning the structure of multiplication in a subtraction semigroup.
DOI : 10.21136/MB.1995.126093
Classification : 06E05, 06F05, 08A02, 20M10, 20M20
Keywords: difference semigroups; identities; semigroup reducts; subtraction semigroups; subtraction algebra; Boolean algebra 
Zelinka, Bohdan. Subtraction semigroups. Mathematica Bohemica, Tome 120 (1995) no. 4, pp. 445-447. doi: 10.21136/MB.1995.126093
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[1] Abbott J. C.: Sets, lattices and Boolean algebras. Allyn and Bacon, Boston, 1969. | MR | Zbl

[2] Schein B. M.: Difference semigroups. Communications in Algebra 20 (1992), 2153-2169. | DOI | MR | Zbl

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