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Theoretical Foundations of Applied Discrete Mathematics
An extension of Gluskin–Hoszu's and Malyshev's theorems to strong dependent n-ary operations
A. V. Cheremushkin Research Institute "Kvant", Moscow
Abstract:
The report presents an extension of Malyshev theorem for n-ary quasigroups with a right or left weak inverse property to the case of strong dependent n-ary operations on a finite set. The main result is the following theorem. Let n⩾3 and a strong dependent n-ary function f on a finite set X be such that f(x1,…,xn)=g1(ˉx,h(ˉy,ˉz))=g2(h(ˉx,ˉy),ˉz), for all (x1,…,xn)=(ˉx,ˉy,ˉz)∈Xi×Xn−i×Xi and some g1,g2,h. Then there exist a permutation σ, a monoid "∗"on X and an automorphism θ of "∗" such that
σ(f(x1,…,xn))=x1∗θ(x2)∗θ2(x3)∗⋯∗θn−1(xn),
for all xi∈X, i=1,…,n. As a corollary, the following new proof of Gluskin–Hosszú theorem for strong dependent n-ary semigroups is obtained: if a strong dependent n-ary operation [x1,…,xn] admits an identity [[x1,…,xn],xn+1,…,x2n−1]=[x1,[x2,…,xn+1],xn+2,…,x2n−1], then there exist a monoid "∗" on X and an automorphism θ of "∗" such that θn−1(x)=a∗x∗a−1, a∈X, θ(a)=a, and [x1,…,xn]=x1∗θ(x2)∗θ2(x3)∗⋯∗θn−2(xn−1)∗a∗xn for all xi∈X, i=1,…,n.
Keywords:
n-ary group, n-ary semigroup, strong dependent operation, weak invertible operation.
Citation:
A. V. Cheremushkin, “An extension of Gluskin–Hoszu's and Malyshev's theorems to strong dependent n-ary operations”, Prikl. Diskr. Mat. Suppl., 2018, no. 11, 23–25
Linking options:
https://www.mathnet.ru/eng/pdma377 https://www.mathnet.ru/eng/pdma/y2018/i11/p23
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Abstract page: | 223 | Full-text PDF : | 66 | References: | 30 |
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