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Catalog · 10.5281/zenodo.23420087

Bi-orderable soluble groups with only Conradian left orders

  • Martino Lupini · University of Bologna

16 October 2026 · CC BY 4.0 · latest of 2 versions

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Bi-orderable soluble groups with only Conradian left orders

Martino Lupini

Abstract

We prove that a soluble bi-orderable group all of whose left orders are Conradian is locally nilpotent, without any finite-generation or countability assumption. Consequently, every subgroup of such a group also has only Conradian left orders. This answers the soluble, bi-orderable case of the subgroup question posed by A. H. Rhemtulla and recorded in 2009.

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10.5281/zenodo.23420087

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BibTeX

@unpublished{Lupini202623420087,
  title = {Bi-orderable soluble groups with only Conradian left orders},
  author = {Martino Lupini},
  year = {2026},
  doi = {10.5281/zenodo.23420087},
  note = {Zenodo deposit, latest of 2}
}