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We study systems of polynomial equations in infinite finitely generated commutative associative rings with an identity element. For each such ring $R$ we obtain an interpretation by systems of equations of a ring of integers $O$ of a finite…

Number Theory · Mathematics 2021-02-08 Albert Garreta , Alexei Miasnikov , Denis Ovchinnikov

We study systems of polynomial equations in several classes of finitely generated rings and algebras. For each ring $R$ (or algebra) in one of these classes we obtain an interpretation by systems of equations of a ring of integers $O$ of a…

Rings and Algebras · Mathematics 2022-10-26 Albert Garreta , Alexei Miasnikov , Denis Ovchinnikov

In this paper we prove that the Diophantine problem in iterated restricted wreath products $G$ of arbitrary non-trivial free abelian groups $A_1,\ldots, A_k$, $k>1$ of finite ranks is undecidable, i.e., there is no algorithm that given a…

Group Theory · Mathematics 2025-02-14 Olga Kharlampovich , Alexei Miasnikov

In this paper we show that Diophantine problem for quadratic equations in Baumslag-Solitar groups $BS(1,k)$ and in wreath products $A \wr \mathbb{Z}$, where $A$ is a finitely generated abelian group and $\mathbb{Z}$ is an infinite cyclic…

Group Theory · Mathematics 2023-05-02 Olga Kharlampovich , Laura Lopez , Alexei Miasnikov

We study finitely generated nilpotent groups $G$ given by full rank finite presentations $\langle A \mid R\rangle$ in the variety $\mathcal{N}_c$ of nilpotent groups of class at most $c$, where $c \geq 2$. We prove that if the deficiency…

Group Theory · Mathematics 2020-10-01 Albert Garreta , Alexei Miasnikov , Denis Ovchinnikov

We study metabelian groups $G$ given by full rank finite presentations $\langle A \mid R \rangle_{\mathcal{M}}$ in the variety $\mathcal{M}$ of metabelian groups. We prove that $G$ is a product of a free metabelian subgroup of rank…

Group Theory · Mathematics 2020-06-12 Albert Garreta , Leire Legarreta , Alexei Miasnikov , Denis Ovchinnikov

We show that the Diophantine problem(decidability of equations) is undecidable in free associative algebras over any field and in the group algebras over any field of a wide variety of torsion free groups, including toral relatively…

Logic · Mathematics 2016-06-28 Olga Kharlampovich , Alexei Myasnikov

We prove that the Diophantine problem for orientable quadratic equations in free metabelian groups is decidable and furthermore, NP-complete. In the case when the number of variables in the equation is bounded, the problem is decidable in…

Group Theory · Mathematics 2018-04-18 Igor Lysenok , Alexander Ushakov

We study the Diophantine problem, i.e. the decision problem of solving systems of equations, for some families of one-relator groups, and provide some background for why this problem is of interest. The method used is primarily the…

Group Theory · Mathematics 2022-08-16 Carl-Fredrik Nyberg-Brodda

In this paper we investigate computational properties of the Diophantine problem for spherical equations in some classes of finite groups. We classify the complexity of different variations of the problem, e.g., when $G$ is fixed and when…

Group Theory · Mathematics 2023-08-25 Caroline Mattes , Alexander Ushakov , Armin Weiß

We show that the Diophantine problem in Thompson's group F is undecidable. Our proof uses the facts that F has finite commutator width and rank 2 abelianisation, then uses similar arguments used by B\"uchi and Senger and Ciobanu and Garreta…

Group Theory · Mathematics 2025-04-21 Luna Elliott , Alex Levine

For a finitely generated group $G$, the \emph{Diophantine problem} over $G$ is the algorithmic problem of deciding whether a given equation $W(z_1,z_2,\ldots,z_k) = 1$ (perhaps restricted to a fixed subclass of equations) has a solution in…

Group Theory · Mathematics 2023-06-06 Richard Mandel , Alexander Ushakov

In [arXiv:1405.6274, Question 5.2 & Question 5.3] Aschenbrenner, Friedl and Wilton ask: (1) Is the equation problem solvable for the fundamental group of any $3$-manifold? and (2) Is the first-order theory of the fundamental group of any…

Group Theory · Mathematics 2025-12-09 Robert D. Gray , Alex Levine

In this paper we begin the systematic study of group equations with abelian predicates in the main classes of groups where solving equations is possible. We extend the line of work on word equations with length constraints, and more…

Group Theory · Mathematics 2022-05-02 Laura Ciobanu , Albert Garreta

The Diophantine problem for a monoid $M$ is the decision problem to decide whether any given system of equations has a solution in $M$. In this note, we give a simple example of a context-free, word-hyperbolic, finitely presented, special…

Group Theory · Mathematics 2022-05-03 Carl-Fredrik Nyberg-Brodda

We construct and study finitely presented groups with quadratic Dehn function (QD-groups) and present the following applications of the method developed in our recent papers. (1) The isomorphism problem is undecidable in the class of…

Group Theory · Mathematics 2020-12-21 A. Yu. Olshanskii , M. V. Sapir

For K \subseteq C, let B_n(K)={(x_1,...,x_n) \in K^n: for each y_1,...,y_n \in K the conjunction (\forall i \in {1,...,n} (x_i=1 => y_i=1)) AND (\forall i,j,k \in {1,...,n} (x_i+x_j=x_k => y_i+y_j=y_k)) AND (\forall i,j,k \in {1,...,n}…

Logic · Mathematics 2012-04-09 Apoloniusz Tyszka

This paper explores multiple closely related themes: bounding the complexity of Diophantine equations over the integers and developing mathematical proofs in parallel with formal theorem provers. Hilbert's Tenth Problem (H10) asks about the…

Number Theory · Mathematics 2025-07-01 Jonas Bayer , Marco David , Malte Hassler , Yuri Matiyasevich , Dierk Schleicher

For a positive proportion of primes $p$ and $q$, we prove that $\mathbb{Z}$ is Diophantine in the ring of integers of $\mathbb{Q}(\sqrt[3]{p},\sqrt{-q})$. This provides a new and explicit infinite family of number fields $K$ such that…

Number Theory · Mathematics 2019-09-05 Natalia Garcia-Fritz , Hector Pasten

We present a universal construction of Diophantine equations with bounded complexity in Isabelle/HOL. This is a formalization of our own work in number theory. Hilbert's Tenth Problem was answered negatively by Yuri Matiyasevich, who showed…

Logic in Computer Science · Computer Science 2025-09-30 Jonas Bayer , Marco David
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