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Equidistribution of the eigenvalues of Hecke operators Hecke算子特征值的等分布
IF 0.8 3区 数学 Q2 MATHEMATICS Pub Date : 2025-08-21 DOI: 10.1002/mana.70033
Dohoon Choi, Min Lee, Youngmin Lee, Subong Lim

In this paper, we prove the equidistribution of the Hecke eigenvalues of Maass forms over an arbitrary number field at a fixed prime ideal, with respect to the Sato–Tate measure. As an application, we obtain that the proportion of Maass forms that do not satisfy the Ramanujan–Petersson conjecture at a fixed prime ideal is 0.

本文证明了固定素数理想下任意数域上质量形式的Hecke特征值关于Sato-Tate测度的等分布。作为应用,我们得到在固定素数理想下不满足Ramanujan-Petersson猜想的质量形式的比例为0。
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引用次数: 0
Multiplicity and asymptotic behavior of normalized solutions for fourth-order equations of the Kirchhoff type Kirchhoff型四阶方程归一化解的多重性和渐近性
IF 0.8 3区 数学 Q2 MATHEMATICS Pub Date : 2025-08-18 DOI: 10.1002/mana.70031
Tao Han, Hong-Rui Sun, Zhen-Feng Jin

In this paper, we study the following fourth-order equation of the Kirchhoff type

本文研究了下列四阶Kirchhoff型方程
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引用次数: 0
The Minkowski inequalities for ( p , α ) $(p,alpha)$ -torsional rigidity and the extensions on Orlicz spaces (p, α)$ (p, α)$ -扭转刚度的Minkowski不等式及其在Orlicz空间上的扩展
IF 0.8 3区 数学 Q2 MATHEMATICS Pub Date : 2025-08-18 DOI: 10.1002/mana.70032
Zhen-Hui Bu, Meng Qin, Denghui Wu

In this paper, we prove the functional Minkowski inequality for (p,α)$(p,alpha)$-torsional rigidity under suitable regularity assumptions, where (p,α)$(p,alpha)$-torsional rigidity can be formulated as the weak solution of an elliptic boundary value problem of the p$p$-Laplacian. We also establish the Orlicz Brunn–Minkowski and Orlicz Minkowski inequalities for (p,α)$(p,alpha)$-torsional rigidity, which are extensions of the Brunn–Minkowski and Minkowski inequalities for torsional rigidity. Finally, we describe the equivalence between the Orlicz Brunn–Minkowski inequality and the Orlicz Minkowski inequality.

在适当的正则性假设下,证明了(p, α)$ (p, α)$ -扭转刚度的泛函Minkowski不等式,其中(p,α)$ (p, α)$ -扭转刚度可以表示为p$ p$ -拉普拉斯算子椭圆边值问题的弱解。我们还建立了(p, α)$ (p, α)$ -扭转刚度的Orlicz Brunn-Minkowski和Orlicz Minkowski不等式,它们是扭转刚度的Brunn-Minkowski和Minkowski不等式的推广。最后,我们描述了Orlicz Brunn-Minkowski不等式与Orlicz Minkowski不等式之间的等价性。
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引用次数: 0
Resonances for vector-valued Jacobi operators on half-lattice 半格上向量值Jacobi算子的共振
IF 0.8 3区 数学 Q2 MATHEMATICS Pub Date : 2025-08-17 DOI: 10.1002/mana.70026
Evgeny Korotyaev

We study resonances for Jacobi operators on the half lattice with matrix-valued coefficients and finitely supported perturbations. We describe a forbidden domain, the geometry of resonances and their asymptotics when the main coefficient of the perturbation (determining its length of the support) goes to zero. Moreover, we show that

研究了具有矩阵值系数和有限支持扰动的半晶格上Jacobi算子的共振。当扰动的主系数(决定支撑的长度)趋于零时,我们描述了一个禁域、共振的几何形状及其渐近性。此外,我们还展示了
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引用次数: 0
An extension to a Liouville theorem on degenerate Monge–Ampère equations in half spaces 半空间中退化monge - ampatire方程的Liouville定理的推广
IF 0.8 3区 数学 Q2 MATHEMATICS Pub Date : 2025-08-17 DOI: 10.1002/mana.70030
Xiaobiao Jia

In this paper, we investigate the asymptotic behavior as infinity of a class of degenerate Monge–Ampère equations in half spaces. Meanwhile, we establish the Schauder estimates on a class of degenerate linear elliptic equations.

本文研究了半空间中一类退化monge - ampatire方程的渐近无穷行为。同时,我们建立了一类退化线性椭圆方程的Schauder估计。
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引用次数: 0
The Riemannian curvature identities for the torsion connection on Spin ( 7 ) ${rm Spin}(7)$ —Manifold and generalized Ricci solitons 自旋(7)$ {rm自旋}(7)$流形和广义Ricci孤子上扭转连接的黎曼曲率恒等
IF 0.8 3区 数学 Q2 MATHEMATICS Pub Date : 2025-08-17 DOI: 10.1002/mana.12021
Stefan Ivanov, Alexander Petkov
<p>It is shown that on compact <span></span><math> <semantics> <mrow> <mi>Spin</mi> <mo>(</mo> <mn>7</mn> <mo>)</mo> </mrow> <annotation>${rm Spin}(7)$</annotation> </semantics></math>-manifold with exterior derivative of the Lee form lying in the Lie algebra <span></span><math> <semantics> <mrow> <mi>Spin</mi> <mo>(</mo> <mn>7</mn> <mo>)</mo> </mrow> <annotation>${rm Spin}(7)$</annotation> </semantics></math> the curvature <span></span><math> <semantics> <mi>R</mi> <annotation>$R$</annotation> </semantics></math> of the <span></span><math> <semantics> <mrow> <mi>Spin</mi> <mo>(</mo> <mn>7</mn> <mo>)</mo> </mrow> <annotation>${rm Spin}(7)$</annotation> </semantics></math>–torsion connection <span></span><math> <semantics> <mrow> <mi>R</mi> <mo>∈</mo> <msup> <mi>S</mi> <mn>2</mn> </msup> <msup> <mi>Λ</mi> <mn>2</mn> </msup> </mrow> <annotation>$Rin S^2Lambda ^2$</annotation> </semantics></math> with vanishing Ricci tensor if and only if the 3-form torsion is parallel with respect to the Levi-Civita connection. It is also proved that <span></span><math> <semantics> <mi>R</mi> <annotation>$R$</annotation> </semantics></math> satisfies the Riemannian first Bianchi identity exactly when the 3-form torsion is parallel with respect to the Levi-Civita and to the <span></span><math> <semantics> <mrow> <mi>Spin</mi> <mo>(</mo> <mn>7</mn> <mo>)</mo> </mrow> <annotation>${rm Spin}(7)$</annotation> </semantics></math>-torsion connections simultaneously. Precise conditions for a compact <span></span><math> <semantics> <mrow> <mi>Spin</mi> <mo>(</mo> <mn>7</mn> <mo>)</mo> </mrow> <annotation>${rm Spin}(7)$</annotation> </semantics></math>-manifold to has closed torsion are given in terms of the Ricci tensor of the <span></span><math> <semantics> <mrow> <mi>Spin</mi> <mo>(</mo> <mn>7</mn> <mo>)</mo>
证明了紧化自旋(7)$ {rm自旋}(7)$流形上李形式的外导数在李代数自旋(7)$ {rm自旋}(7)$上曲率R$ R$自旋(7)$ {rm自旋}(7)$ -扭转连接R∈s2 Λ 2$ Rin S^2Lambda ^2$里奇张量当且仅当三维扭转相对于列维-西维塔连接是平行的。同时证明了当3型扭转同时平行于Levi-Civita和Spin (7)$ {rm Spin}(7)$ -扭转连接时,R$ R$满足黎曼第一Bianchi恒等式。利用自旋(7)$ {rm自旋}(7)$ -扭转连接的里奇张量,给出了紧化自旋(7)$ {rm自旋}(7)$ -扭转具有闭合扭转的精确条件。证明了具有闭合扭转的紧化Spin (7)$ {rm Spin}(7)$流形是Ricci平坦的当且仅当扭转范数或黎曼标量曲率的范数为常数。证明了任何紧旋旋(7)$ {rm旋旋}(7)$ -具有闭扭转3型的流形都是一个广义梯度Ricci孤子,这等价于一个向量场相对于扭转连接是平行的。特别地,这个向量场保留了Spin (7)$ {rm Spin}(7)$ -结构。
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引用次数: 0
Functions of self-adjoint operators under relatively bounded and relatively trace class perturbations 相对有界和相对迹类摄动下自伴随算子的函数
IF 0.8 3区 数学 Q2 MATHEMATICS Pub Date : 2025-08-14 DOI: 10.1002/mana.70000
A. B. Aleksandrov, V. V. Peller

We study the behaviour of functions of self-adjoint operators under relatively bounded and relatively trace class perturbation. We introduce and study the class of relatively operator Lipschitz functions. An essential role is played by double operator integrals. We also consider the class of resolvent Lipschitz functions. Then we obtain a trace formula in the case of relatively trace class perturbations and show that the maximal class of function for which the trace formula holds in the case of relatively trace class perturbations coincides with the class of relatively operator Lipschitz functions. Our methods also give us a new approach to the inequality |ξ(t)|(1+|t|)1dt<$int |bm{xi }(t)|(1+|t|)^{-1},{rm d}t<infty$ for the spectral shift function ξ$bm{xi }$ in the case of relatively trace class perturbations.

研究了自伴随算子函数在相对有界和相对迹类摄动下的行为。介绍并研究了一类相对算子Lipschitz函数。二重算子积分起着重要的作用。我们还考虑了一类可分解的Lipschitz函数。然后,我们得到了相对微扰情况下的迹公式,并证明了在相对微扰情况下,迹公式成立的最大函数类与相对算子Lipschitz函数类重合。我们的方法也给出了求解不等式∫| ξ (t) |(1 + |)的新方法T |)−1 d T &lt;∞$int |bm{xi }(t)|(1+|t|)^{-1},{rm d}t<infty$对于谱移函数ξ $bm{xi }$ in相对微量类扰动的情况。
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引用次数: 0
Twistor spaces, conformal changes, and metric connections on the base manifold 扭转空间,共形变化,以及基本流形上的度量连接
IF 0.8 3区 数学 Q2 MATHEMATICS Pub Date : 2025-08-11 DOI: 10.1002/mana.70020
Johann Davidov, Oleg Mushkarov

The following problems related to almost complex structures on a twistor space are discussed: (1) when two almost complex structures defined by a morphism of the twistor space and two conformal metrics on the base manifold coincide; (2) when the Atiyah–Hitchin–Singer or Eells–Salamon almost complex structures on the twistor space defined by two metric connections on the base Riemannian manifold coincide.

讨论了以下与扭转空间上的几乎复杂结构有关的问题:(1)由扭转空间的一个态射和基流形上的两个共形度量定义的两个几乎复杂结构重合时;(2)当基本黎曼流形上由两个度量连接定义的扭转空间上的atiyah - hitkin - singer或Eells-Salamon几乎复杂结构重合时。
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引用次数: 0
Estimates for approximation characteristics of Nikol'skii–Besov classes of functions with mixed smoothness in the space B q , 1 ${B_{q,1}}$ 空间bq,1 ${B_{q,1}}$中混合光滑函数Nikol 'skii-Besov类的逼近特征估计
IF 0.8 3区 数学 Q2 MATHEMATICS Pub Date : 2025-08-05 DOI: 10.1002/mana.70027
K. V. Pozharska, A. S. Romanyuk
<p>Exact-order estimates are obtained for some approximation characteristics of the classes of periodic multivariate functions with mixed smoothness (the Nikol'skii–Besov classes <span></span><math> <semantics> <msubsup> <mi>B</mi> <mrow> <mi>p</mi> <mo>,</mo> <mi>θ</mi> </mrow> <mi>r</mi> </msubsup> <annotation>$B^{bm{r}}_{p, theta }$</annotation> </semantics></math>) in the space <span></span><math> <semantics> <msub> <mi>B</mi> <mrow> <mi>q</mi> <mo>,</mo> <mn>1</mn> </mrow> </msub> <annotation>$B_{q,1}$</annotation> </semantics></math>, <span></span><math> <semantics> <mrow> <mn>1</mn> <mo>≤</mo> <mi>p</mi> <mo>,</mo> <mi>q</mi> <mo>≤</mo> <mi>∞</mi> </mrow> <annotation>$1 le p, q le infty$</annotation> </semantics></math>, <span></span><math> <semantics> <mrow> <mn>1</mn> <mo>≤</mo> <mi>θ</mi> <mo>≤</mo> <mi>∞</mi> </mrow> <annotation>$1le theta le infty$</annotation> </semantics></math>, whose norm is stronger than the <span></span><math> <semantics> <msub> <mi>L</mi> <mi>q</mi> </msub> <annotation>$L_q$</annotation> </semantics></math>-norm. It is shown that in the multivariate case (in contrast to the univariate) in most of the considered situations the obtained estimates differ in order from the corresponding estimates in the space <span></span><math> <semantics> <msub> <mi>L</mi> <mi>q</mi> </msub> <annotation>$L_q$</annotation> </semantics></math>. Besides, a significant progress is made in estimates for the considered approximation characteristics of the classes <span></span><math> <semantics> <msubsup> <mi>B</mi> <mrow> <mi>p</mi> <mo>,</mo> <mi>θ</mi> </mrow> <mi>r</mi> </msubsup> <annotation>$B^{bm{r}}_{p, theta }$</annotation> </semantics></math> in the space <span></span><math> <semantics> <msub> <mi>B</mi> <mrow>
得到了混合光滑周期多元函数类(Nikol 'skii-Besov类B p, B p, B p)的一些近似特征的正序估计。θ r $B^{bm{r}}_{p, theta }$)在空间B q, 1 $B_{q,1}$, 1≤p,q≤∞$1 le p, q le infty$, 1≤θ≤∞$1le theta le infty$,其范数强于L q $L_q$ -范数。结果表明,在多元情况下(与单变量情况相反),在大多数考虑的情况下,得到的估计与空间lq $L_q$中相应的估计顺序不同。此外,在对B q空间中B p, θ r $B^{bm{r}}_{p, theta }$类所考虑的近似特性的估计方面取得了重大进展。1 $B_{q, 1}$与空间lq $L_q$中已知的估计值进行比较。
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引用次数: 0
L p - L q $L^ptext{-}L^q$ regularity of Forelli–Rudin-type operators on some bounded Hartogs domains 一些有界Hartogs域上forelli - rudin型算子的L p - L q$正则性
IF 0.8 3区 数学 Q2 MATHEMATICS Pub Date : 2025-08-04 DOI: 10.1002/mana.12034
Enze Zhu, Qingyang Zou

This paper is concerned with a class of bounded pesudoconvex Hartogs domains, which is defined by the inequality

研究了一类由不等式定义的有界伪凸Hartogs域
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引用次数: 0
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