Abstract
A bi-order on a group 𝐺 is a total, bi-multiplication invariant order.
A subset 𝑆 in an ordered group
Award Identifier / Grant number: 075-15-2022-265
Funding statement: The work was performed at the Steklov International Mathematical Center and supported by the Ministry of Science and Higher Education of the Russian Federation (agreement no. 075-15-2022-265).
Acknowledgements
The author acknowledges Igor Lysenok for many inspirational discussions on this subject and Cristóbal Rivas for pointing out that Corollary 8.4 holds for Conradian orders. The author is also grateful to the referee/s for his/her many useful comments which led to a refinement of the paper and some new results.
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Communicated by: Timothy C. Burness
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