The Modular Isomorphism Problem -- the alternative perspective on counterexamples
As a result of impressive research arXiv:2106.07231, D. Garc\'{\i}a-Lucas, \'{A}. del R\'{i}o and L. Margolis defined an infinite series of non-isomorphic $2$-groups $G$ and $H$, whose group algebras $\mathbb{F}G$ and $\mathbb{F}H$ over the field $\mathbb{F}=\mathbb{F}_2$ are isomorph...
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Zusammenfassung: | As a result of impressive research arXiv:2106.07231, D. Garc\'{\i}a-Lucas,
\'{A}. del R\'{i}o and L. Margolis defined an infinite series of non-isomorphic
$2$-groups $G$ and $H$, whose group algebras $\mathbb{F}G$ and $\mathbb{F}H$
over the field $\mathbb{F}=\mathbb{F}_2$ are isomorphic, solving negatively the
long-standing Modular Isomorphism Problem (MIP). In this note we give a
different perspective on their examples and show that they are special cases of
a more general construction. We also show that this type of construction for
$p>2$ does not provide a similar counterexample to the MIP. |
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DOI: | 10.48550/arxiv.2406.01810 |