Matilde N. Lalin
The aim of this note is to prove the Mahler measure identity $m(x+x^{-1}+y+y^{-1}+5) = 6 m(x+x^{-1}+y+y^{-1}+1)$ which was conjectured by Boyd. The proof is achieved by proving relationships between regulators of both curves.
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Recently the second author and Qin numerically verified some Mahler measure identities of genus 2 and 3 polynomial families. In this paper, we use the elliptic regulator to prove an identity invoving shifted Mahler measure for Boyd's family.
The Mahler measure of a nonzero $n$-variable polynomial $P$ is the integral of $\log|P|$ on the unit $n$-torus. A result of Boyd and Lawton says that the Mahler measure of a multivariate polynomial is the limit of Mahler measures of univariate polynomials. We prove the analogous result for different extensions of Mahler measure such as generalized Mahler measure (integrating the maximum of $\log|P|$ for possibly different $P$'s), multiple Mahler measure (involving products of $\log|P|$ for possibly different $P$'s), and higher Mahler measure (involving $\log^k|P|$).
Mahler measures of a family of non-tempered polynomials and Boyd's conjectures
本文通过建立非回火多项式与回火多项式马勒测度之间的新恒等式，结合 Brunault-Mellit-Zudilin 公式及附加泛函恒等式，证明了导子为 30 的椭圆曲线的博伊德猜想。
We use the elliptic regulator to recover some identities between Mahler measures involving certain families of genus 2 curves that were conjectured by Boyd and proven by Bertin and Zudilin by differentiating the Mahler measures and using hypergeometric identities. Since our proofs involve the regulator, they yield light into the expected relation of each Mahler measure to special values of $L$-functions of certain elliptic curves.
In this paper we will establish functional equations for Mahler measures of families of genus-one two-variable polynomials. These families were previously studied by Beauville, and their Mahler measures were considered by Boyd, Rodriguez-Villegas, Bertin, Zagier, and Stienstra. Our functional equations allow us to prove identities between Mahler measures that were conjectured by Boyd. As a corollary, we also establish some new transformations for hypergeometric functions.
General Boyd-Lawton Theorems with Multivariable Limits
本文提出统一框架，将Issa和Lalín的单变量Boyd-Lawton定理推广到多变量版本，同时推广了Brunault等人和Issa与Lalín的工作。
The Mahler measure of a polynomial $P$ in $n$ variables is defined as the mean of $\log|P|$ over the $n$-dimensional torus. For certain polynomials with integer coefficients in two variables the Mahler measure is known to be related to special values of L-functions of arithmetic objects (e.g. Dirichlet characters and elliptic curves over $\mathbb{Q}$). Inspired by work of Deninger Boyd has investigated this relationship numerically. In this paper we reduce some conjectures of Boyd to Beilinson`s conjectures on special values of L-functions. The methods in use are widely of K-theoretical nature…
We prove a variety of explicit formulas relating special values of generalized hypergeometric functions to lattice sums with four indices of summation. These results are related to Boyd's conjectured identities between Mahler measures and special values of $L$-series of elliptic curves.
We prove Boyd's "unexpected coincidence" of the Mahler measures for two families of two-variate polynomials defining curves of genus 2. We further equate the same measures to the Mahler measures of polynomials $y^3-y+x^3-x+kxy$ whose zero loci define elliptic curves for $k\ne0,\pm3$.
Machine learning the arithmetic of Boyd's Mahler measure conjectures
该研究利用机器学习与统计分析，探究博伊德马勒测度猜想中有理数$r_k$的算术性质，重现关键观测并发现素数2、3下的特殊算术结构。
The Mahler measure of the polynomials $t(x^m-1) y - (x^n-1) \in \dC[x,y]$ is essentially the sum of volumes of a certain collection of ideal hyperbolic polyhedra in $\HH^3$, which can be determined a priori as a function on the parameter $t$. We obtain a formula that generalizes some previous formulas given by Cassaigne and Maillot \cite{M} and Vandervelde \cite{V}. These examples seem to be related to the ones studied by Boyd \cite{B1}, \cite{B2} and Boyd and Rodriguez Villegas \cite{BRV2} for some cases of the $A$-polynomial of one-cusped manifolds.
An invariant property of Mahler measure
本文提出保持多项式 Mahler 测度的变量替换，用以构造具有指定 Mahler 测度的非平凡多项式，并证明 Boyd 与 Brunault 的若干数值猜想。
We prove that the (logarithmic) Mahler measure $m(P)$ of $P(x,y)=x+1/x+y+1/y+3$ is equal to the $L$-value $2L'(E,0)$ attached to the elliptic curve $E:P(x,y)=0$ of conductor 21. In order to do this we investigate the measure of a more general Laurent polynomial $P_{a,b,c}(x,y)=a(x+1/x)+b(y+1/y)+c$ and show that the wanted quantity $m(P)$ is related to a "half-Mahler" measure of $\tilde P(x,y)=P_{\sqrt{7},1,3}(x,y)$. In the finale we use the modular parametrization of the elliptic curve $\tilde P(x,y)=0$, again of conductor 21, due to Ramanujan and the Mellit--Brunault formula for the regulator…
On the Mahler measure of $(1+x)(1+y)+z$
该研究证明了Boyd与Rodriguez Villegas关于多项式$(1+x)(1+y)+z$的马勒测度与导子15的椭圆曲线$L$-函数在$s=3$处值关联的猜想，证明依托Zudilin与作者对模曲线$K_4$类regulator的计算。
Boyd's conductor-11 Mahler measure conjecture: proof of the split-integral identity (C3), with an exact structural analysis of the family S_k
本文证明了Boyd关于导子11的Mahler测度猜想中的第三个恒等式(C3)，通过将分裂积分转化为正则积分并利用模单位公式精确计算，同时给出了族S_k的完整结构分析。
We discuss several aspects of the dynamical Mahler measure for multivariate polynomials. We prove a weak dynamical version of Boyd--Lawton formula and we characterize the polynomials with integer coefficients having dynamical Mahler measure zero both for the case of one variable (Kronecker's lemma) and for the case of two variables, under the assumption that the dynamical version of Lehmer's question is true.
We use graphs to define sets of Salem and Pisot numbers, and prove that the union of these sets is closed, supporting a conjecture of Boyd that the set of all Salem and Pisot numbers is closed. We find all trees that define Salem numbers. We show that for all integers n the smallest known element of the n-th derived set of the set of Pisot numbers comes from a graph. We define the Mahler measure of a graph, and find all graphs of Mahler measure less than (1+sqrt5)/2. Finally, we list all small Salem numbers known to be definable using a graph.
Finding New Limit Points of Mahler Measure by Methods of Missing Data Restoration
本文采用缺失数据恢复方法，扩展了单变量多项式Mahler测度已知极限点的列表，进一步推进了该领域的研究。
We prove Boyd's conjectures relating Mahler's measures and values of L-functions of elliptic curves in the cases when the corresponding elliptic curve has conductor 14.
The Mahler measure of exact polynomials in three variables
研究通过椭圆曲线L值和Bloch-Wigner双曲值表达三变量多项式马尔可夫度量，基于Beilinson猜想，并推广Lalín的结果，应用于Boyd和Brunault的猜想。
We show that for almost every polynomial P(x,y) with complex coefficients, the difference of the logarithmic Mahler measures of P(x,y) and P(x,x^n) can be expanded in a type of formal series similar to an asymptotic power series expansion in powers of 1/n. This generalizes a result of Boyd. We also show that such an expansion is unique and provide a formula for its coefficients. When P has algebraic coefficients, the coefficients in the expansion are linear combinations of polylogarithms of algebraic numbers, with algebraic coefficients.
Generalized Mahler measures of Laurent polynomials
本文研究二元Laurent多项式在任意环面上的广义Mahler测度，建立其与标准Mahler测度的关系，并对Boyd多项式族显式计算r=4情形，最终推广至多变量。
The alternative to Mahler measure of a multivariate polynomial
本文提出用模小于1的根数占比作为马勒测度的替代量，将其推广到多元情形，证明二元时的Boyd-Lawton型极限定理，并给出低维情形的精确值与高维猜想。
Limits of Mahler measures in multiple variables
本文将 Boyd–Lawton 关于单变量单项式替换下马勒测度收敛的结果推广到多变量情形，并给出误差项的显式上界及一类二变量多项式的完整渐近展开。
Given a $k$-variable Laurent polynomial $F$, any $l\times k$ integer matrix $A$ naturally defines an $l$-variable Laurent polynomial $F_A.$ I prove that for fixed $F$ the set $\mathcal M(F)$ of all the logarithmic Mahler measures $m(F_A)$ of $F_A$ for all $A$ is a closed subset of the real line. Moreover, the matrices $A$ can be assumed to be of a special form, which I call Primitive Hermite Normal Form. Furthermore, if $F$ has integer coefficients and $\mathcal M(F)$ contains $0,$ then $0$ is an isolated point of this set. I also show that, for a given bound $B>0$, the set ${\mathcal M}_B$ of…
We determine the limit of the rate $\frac{ν_{n,a}}{n}$ between the number $ν_{n,a}$ of roots of the trinomial $x^n-ax-1$, $a\in (0,2]$, which are greater than 1 in modulus, and degree $n$. The analogue of Boyd's Conjecture (C) for Perron numbers is a consequence of the limit, under the assumption that the conjecture of Lind-Boyd is valid. The product of these $ν_{n,a}$ roots has also a limit when $n\to\infty$. The explicit expression of the limit by an integral is presented. The computing of the rate and the product for $n=100,150$ as well as of its limits is presented.
Relating Mahler measures and Dirichlet $L$-values: new evidence for Chinburg's conjectures
本文通过新的数值例子验证了陈伯格猜想，展示了8个强形式和18个弱形式的实例，基于Boyd和Rodriguez-Villegas的工作，证明了允许环面系数的弱猜想。
On Eswarathasan--Levine and Boyd's conjectures for harmonic numbers
该研究为三个调和数猜想提供数值证据，对p≤16843证明了其中两个猜想（至多一个例外），枚举了500万以内的调和素数验证密度猜想，大幅拓展了此前的计算范围。
In our recent work with Mat Rogers on resolving some Boyd's conjectures on two-variate Mahler measures, a new analytical machinery was introduced to write the values $L(E,2)$ of $L$-series of elliptic curves as periods in the sense of Kontsevich and Zagier. Here we outline, in slightly more general settings, the novelty of our method with Rogers, and provide a simple illustrative example.
Allouche and Shallit introduced the notion of a regular power series as a generalization of automatic sequences. Becker showed that all regular power series satisfy Mahler equations and conjectured equivalent conditions for the converse to be true. We prove a stronger form of Becker's conjecture for a subclass of Mahler power series.
Smyth's Conjecture on the Mahler Measure of non-reciprocal trinomials of height $1$
本文证明了Smyth关于高度为1的非互反三项式Mahler测度的猜想，精确确定了其与最小极限点$\rho$的大小关系，并猜想该结果可推广至所有非互反多项式。
The Vol-Det Conjecture relates the volume and the determinant of a hyperbolic alternating link in $S^3$. We use exact computations of Mahler measures of two-variable polynomials to prove the Vol-Det Conjecture for many infinite families of alternating links. We conjecture a new lower bound for the Mahler measure of certain two-variable polynomials in terms of volumes of hyperbolic regular ideal bipyramids. Associating each polynomial to a toroidal link using the toroidal dimer model, we show that every polynomial which satisfies this conjecture with a strict inequality gives rise to many infin…
A Neighboring-Denominator Variant of the Erdős--Mahler Conjecture
本文证明了埃尔德什-马勒猜想的邻分母情形，即若无穷多n对应的P(pnqnqn+1)有界，则无理数ξ为刘维尔数，证明结合了连分数行列式恒等式与p进对数线性型估计。
In 1994, Becker conjectured that if $F(z)$ is a $k$-regular power series, then there exists a $k$-regular rational function $R(z)$ such that $F(z)/R(z)$ satisfies a Mahler-type functional equation with polynomial coefficients where the initial coefficient satisfies $a_0(z)=1$. In this paper, we prove Becker's conjecture in the best-possible form; we show that the rational function $R(z)$ can be taken to be a polynomial $z^γQ(z)$ for some explicit non-negative integer $γ$ and such that $1/Q(z)$ is $k$-regular.
Minimal Mahler Measure in Quartic Galois Number Fields
本研究聚焦四次伽罗瓦数域中最小整马勒测度与域判别式的关联，推导了有条件依赖ABC猜想的密度结论及若干无条件结论。
Dubickas and Smyth defined the metric Mahler measure on the multiplicative group of non-zero algebraic numbers. The definition involves taking an infimum over representations of an algebraic number $α$ by other algebraic numbers. We verify their conjecture that the infimum in its definition is always achieved as well as establish its analog for the ultrametric Mahler measure.
We prove a conjectured formula relating the Mahler measure of the Laurent polynomial $1+X+X^{-1}+Y+Y^{-1}$, to the $L$-series of a conductor 15 elliptic curve.
The weak Chinburg conjecture on Mahler measures
本文通过构造有理多项式 $R_f$ 并证明其 Mahler 测度等于 $4wL'(\chi_{-f},-1)$，从而证明了弱二元 Chinburg 猜想。
Nombres de Pisot, nombres de Salem et la conjecture de Lehmer
本文研究Pisot数与Salem数的关系，证明两者并集为实半直线的闭子集，从而解决Boyd猜想并否定Lehmer猜想。
The metric Mahler measure was first studied by Dubickas and Smyth in 2001 as a means of phrasing Lehmer's conjecture in topological language. More recent work of the author examined a parametrized family of generalized metric Mahler measures that gives rise to a series of new, and apparently difficult, problems. We establish a connection between these metric Mahler measures and the theory of continued fractions in a certain class of special cases. Our results enable us to calculate metric Mahler measures in several new examples.
Recent work of Pritsker defines and studies an areal version of the Mahler measure. We further explore this function with a particular focus on the case where its value is small, as this is most relevant to Lehmer's conjecture. In this situation, we provide improvements to two inequalities established in Pritsker's original paper.
In the first part we construct algorithms which we apply to solve S-unit, Mordell, cubic Thue, cubic Thue-Mahler and generalized Ramanujan-Nagell equations. As a byproduct we obtain alternative practical approaches for various classical Diophantine problems, including the fundamental problem of finding all elliptic curves over Q with good reduction outside a given finite set of rational primes. To illustrate the utility of our algorithms we determined the solutions of large classes of equations, containing many examples of interest which are out of reach for the known methods. In addition we u…
We consider the Mahler measure of the polynomial 1+x_1+x_2+x_3+x_4, which is the first case not yet evaluated explicitly. A conjecture due to F. Rodriguez-Villegas represents this Mahler measure as a special value at the point 4 of the L-function of a modular modular form of weight 3. We prove that this Mahler measure is equal to a linear combination of double L-values of certain meromorphic modular forms of weight 4.
Using the Skolem-Mahler-Lech theorem, we prove a dynamical Mordell-Lang conjecture for semiabelian varieties.
In a previous paper, the authors introduced several vector space norms on the space of algebraic numbers modulo torsion which corresponded to the Mahler measure on a certain class of numbers and allowed the authors to formulate L^p Lehmer conjectures which were equivalent to their classical counterparts. In this paper, we introduce and study several analogous norms which are constructed in order to satisfy an extremal property with respect to the Mahler measure. These norms are a natural generalization of the metric Mahler measure introduced by Dubickas and Smyth. We evaluate these norms on ce…
The parametrized family of metric Mahler measures
本文推广了Mahler测度的度量版本$M_t$，利用其给出Lehmer猜想的等价形式，证明该函数由指数函数分段构造，并提出一个关于有理数图像绘制的猜想。
In this article, we study the Mahler measures of more than 500 families of reciprocal polynomials defining genus 2 and genus 3 curves. We numerically find relations between the Mahler measures of these polynomials with special values of $L$-functions. We also numerically discover more than 100 identities between Mahler measures involving different families of polynomials defining genus 2 and genus 3 curves. Furthermore, we study the Mahler measures of several families of nonreciprocal polynomials defining genus 2 curves and numerically find relations between the Mahler measures of these famili…
Mahler measures at interior CM points: proofs of two conjectures of Samart
该研究证明了萨马特关于内部CM点马勒测度的两个猜想，通过微分比较延拓、连续性论证及精确CM格点和计算完成，所有恒等式经41-60位数值验证。
Growth of Mahler measure and algebraic entropy of dynamics with the Laurent property
研究具有拉格朗日性质的动力系统和簇代数中马勒度量的增长率，比较其与其他增长度量，并提出马勒度量的增长率与代数熵一致的猜想。
If $α$ is a non-zero algebraic number, we let $m(α)$ denote the Mahler measure of the minimal polynomial of $α$ over $\mathbb Z$. A series of articles by Dubickas and Smyth, and later by the author, develop a modified version of the Mahler measure called the $t$-metric Mahler measure, denoted $m_t(α)$. For fixed $α\in \bar{\mathbb Q}$, the map $t\mapsto m_t(α)$ is continuous, and moreover, is infinitely differentiable at all but finitely many points, called {\it exceptional points} for $α$. It remains open to determine whether there is a sequence of elements $α_n\in \bar{\mathbb Q}$ such that …
An exact family of bivariate polynomials and Variants of Chinburg's Conjectures
本文通过研究二元多项式族$P_d(x,y)$的Mahler测度，将其表示为狄利克雷$L$-函数的线性组合，从而为Chinburg猜想及其推广版本提供了解答，覆盖多个导子情况。
A height gap theorem for coefficients of Mahler functions
本文研究了马勒函数系数的高度增长行为，证明了存在五种不同的增长模式，并揭示了其中的间隙现象，同时推导了k-马勒函数的正则性和自动性条件。
The asymptotic Mahler measure of Gaussian periods
构造具有特别小Mahler测度的分圆整数（高斯周期）序列，研究其Mahler测度作为导子函数的渐近行为，发现增长率是维数递增的log Calabi-Yau簇族的多元Mahler测度。
Let $R=\mathcal{O}_{\Q(\sqrt{d})}$ for $d<0$, squarefree, $d\neq -1,-3$. We prove Lehmer's conjecture for associated reciprocal polynomials of $R$-matrices; that is, any noncyclotomic $R$-matrix has Mahler measure at least $λ_0=1.176...$.
A certified continuation machine for Mahler measure identities at CM points, with twelve new proofs of conjectures of Samart
该论文将微分比较延拓方法公理化为一台认证机器，用于在CM点证明Mahler测度恒等式，为Samart猜想提供了十二个新证明，并发现其适用性边界并非拓扑边界。
Maillet's property and Mahler's Conjecture on Liouville numbers fail for matrices
本文证明 Maillet 的不变性性质在高维解析矩阵函数中仅对特殊系数的 Möbius 变换成立，从而否定了 Mahler 开放问题的高维类似，并推广了 Erdős 的拓扑论证证明连续自映射下许多 Liouville 矩阵保持不变。
The Mahler measure of exact polynomials and special $L$-values of $K3$ surfaces
本文用Deligne-Beilinson上同调表达任意变量精确多项式的Mahler测度，并推广至四变量情形，联系$K3$曲面在$s=4$的$L$-值；在Beilinson猜想下，将特定多项式测度用zeta函数和模形式$L$-函数表示。
On the Mahler measure and root distribution of the $Q$-polynomial of links
该研究探讨纽结Q多项式的马勒测度与根分布，证明扭转下Q多项式马勒测度收敛、多数根趋近[-2,2]，对比三类多项式根的差异，给出仅含非零实根的2桥纽结无限族并提出相关猜想。
The Conjecture of Lehmer is proved to be true. The proof mainly relies upon: (i) the properties of the Parry Upper functions $f_{\houseα}(z)$ associated with the dynamical zeta functions $ζ_{\houseα}(z)$ of the Rényi--Parry arithmetical dynamical systems ($β$-shift), for $α$ a reciprocal algebraic integer of house $\houseα$ greater than 1, (ii) the discovery of lenticuli of poles of $ζ_{\houseα}(z)$ which uniformly equidistribute at the limit on a limit "lenticular" arc of the unit circle, when $\houseα$ tends to $1^+$, giving rise to a continuous lenticular minorant ${\rm M}_{r}(\houseα)$ of …
The $t$-metric Mahler measures of surds and rational numbers
本文研究了 $t$-度量 Mahler 测度，证明了对有理数该测度下确界可仅由有理点达到，并通过二次反例说明该结论对一般代数数不成立，同时给出了计算无平方因子根数测度的显式公式。
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