On Gardam's and Murray's units in group rings

We show that the units found in torsion-free group rings by Gardam are twisted unitary elements. This justifies some choices in Gardam's construction that might have appeared arbitrary, and yields more examples of units. We note that all units found up to date exhibit non-trivial symmetry.

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Видавець:Lugansk National Taras Shevchenko University
Дата:2023
Автор: Bartholdi, L.
Формат: Стаття
Мова:English
Опубліковано: Lugansk National Taras Shevchenko University 2023
Теми:
Онлайн доступ:https://admjournal.luguniv.edu.ua/index.php/adm/article/view/2053
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Організація

Algebra and Discrete Mathematics
Опис
Резюме:We show that the units found in torsion-free group rings by Gardam are twisted unitary elements. This justifies some choices in Gardam's construction that might have appeared arbitrary, and yields more examples of units. We note that all units found up to date exhibit non-trivial symmetry.