Article contents
SEMIRING AND INVOLUTION IDENTITIES OF POWER GROUPS
Published online by Cambridge University Press: 17 January 2023
Abstract
For every group G, the set $\mathcal {P}(G)$ of its subsets forms a semiring under set-theoretical union
$\cup $ and element-wise multiplication
$\cdot $, and forms an involution semigroup under
$\cdot $ and element-wise inversion
${}^{-1}$. We show that if the group G is finite, non-Dedekind, and solvable, neither the semiring
$(\mathcal {P}(G),\cup ,\cdot )$ nor the involution semigroup
$(\mathcal {P}(G),\cdot ,{}^{-1})$ admits a finite identity basis. We also solve the finite basis problem for the semiring of Hall relations over any finite set.
Keywords
MSC classification
- Type
- Research Article
- Information
- Journal of the Australian Mathematical Society , Volume 115 , Issue 3 , December 2023 , pp. 354 - 374
- Copyright
- © The Author(s), 2023. Published by Cambridge University Press on behalf of Australian Mathematical Publishing Association Inc.
Footnotes
Communicated by James East
Supported by the Russian Science Foundation (grant No. 22-21-00650).
References
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