Totally anti - symmetric quasigroups for all
نویسنده
چکیده
A quasigroup (Q, ∗) is called totally anti-symmetric if (c ∗ x) ∗ y = (c ∗ y) ∗ x⇒ x = y and x∗y = y∗x⇒ x = y. A totally anti-symmetric quasigroup can be used for the definition of a check digit system. Ecker and Poch [9] conjectured that there are no totally anti-symmetric quasigroups of order 4k + 2. This article will completely disprove their conjecture (except for n = 2, 6) as we will give constructions for totally anti-symmetric quasigroups for all orders n 6= 2, 6. Additionally we prove that the class of totally anti-symmetric quasigroups is no variety.
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