Arithmetical invariants of local quaternion orders
Rings and Algebras
2026-01-13 v3
Abstract
Let be a DVR, let be its quotient field, and let be a -order in a quaternion algebra over . The elasticity of is \rho(R^\bullet) = \sup\{\, k/l : u_1\cdots u_k = v_1 \cdots v_l \text{ with u_iv_jR^\bulletkl \ge 1} \,\} and is one of the basic arithmetical invariants that is studied in factorization theory. We characterize finiteness of and show that the set of distances and all catenary degrees are finite. In the setting of noncommutative orders in central simple algebras, such results have only been understood for hereditary orders and for a few individual examples.
Keywords
Cite
@article{arxiv.1706.00572,
title = {Arithmetical invariants of local quaternion orders},
author = {Nicholas R. Baeth and Daniel Smertnig},
journal= {arXiv preprint arXiv:1706.00572},
year = {2026}
}
Comments
33 pages; final revision (some typos fixed)