2018
DOI: 10.1090/tran/7579
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Undecidability of equations in free Lie algebras

Abstract: In this paper we prove undecidability of finite systems of equations in free Lie algebras of rank at least three over an arbitrary field. We show that the ring of integers Z is interpretable by positive existential formulas in such free Lie algebras over a field of characteristic zero.

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Cited by 5 publications
(6 citation statements)
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“…Then the conclusions of Theorem 1.6 hold for F . This complements the aforementioned results of Romankov [37] and of Kharlampovich and Miasnikov [15,17] regarding free algebras. We remark that in [37] it is proved (among others) that the algebras of Corollary 5.10 actually have undecidable Diophantine problem if Λ = Z.…”
Section: Introductionsupporting
confidence: 89%
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“…Then the conclusions of Theorem 1.6 hold for F . This complements the aforementioned results of Romankov [37] and of Kharlampovich and Miasnikov [15,17] regarding free algebras. We remark that in [37] it is proved (among others) that the algebras of Corollary 5.10 actually have undecidable Diophantine problem if Λ = Z.…”
Section: Introductionsupporting
confidence: 89%
“…Corollary 5.10 complements Romankov's [37], and Kharlampovich and Miasnikov's [15,17] papers on free algebras. In the first reference it is proved that D(F ; L ring ) is undecidable for many types of free rings F .…”
Section: Subrings Of Global Fieldssupporting
confidence: 67%
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“…One can view these rings as free Z-algebras, it is essentail, since the proofs use undecidability of the Diophantine problem in the coefficients Z. Using different methods Kharlampovich and Miasnikov recently proved undecidability of DpAq, for any of the following rings A: a free associative k-algebra, a free Lie k-algebra (of rank at least 3), and group k-algebras kpGq for various groups G (including free, torsion-free hyperbolic, right-angled Artin, and other groups) [19,20]. In all these results the field k is arbitrary, possibly with decidable Dpkq.…”
Section: Introductionmentioning
confidence: 99%