Rank-two torsion-free modules over valuation domains
Luigi Salce, Paolo Zanardo (1988)
Rendiconti del Seminario Matematico della Università di Padova
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Displaying similar documents to “On a generalization of a Prüfer-Kaplansky-Procházka theorem”
Rank-two torsion-free modules over valuation domains
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In this article, we formalize in Mizar [7] the definition of “torsion part” of ℤ-module and its properties. We show ℤ-module generated by the field of rational numbers as an example of torsion-free non free ℤ-modules. We also formalize the rank-nullity theorem over finite-rank free ℤ-modules (previously formalized in [1]). ℤ-module is necessary for lattice problems, LLL (Lenstra, Lenstra and Lovász) base reduction algorithm [23] and cryptographic systems with lattices [24].
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