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Anisotropic Gauss curvature flow of complete non-compact graphs 完全非紧图的各向异性高斯曲率流
IF 1.2 3区 数学 Q1 MATHEMATICS Pub Date : 2025-09-16 DOI: 10.1016/j.geomphys.2025.105648
Shujing Pan, Yong Wei
In this paper, we consider the anisotropic α-Gauss curvature flow for complete noncompact convex hypersurfaces in the Euclidean space with the anisotropy determined by a smooth closed uniformly convex Wulff shape. We show that for all positive power α>0, if the initial hypersurface is complete noncompact and locally uniformly convex, then there exists a complete, noncompact, smooth and strictly convex solution of the flow which is defined for all positive time.
本文考虑欧几里德空间中完全非紧凸超曲面的各向异性α-高斯曲率流,其各向异性由光滑闭合一致凸Wulff形状决定。我们证明了对于所有正幂α>;0,如果初始超曲面是完全非紧且局部一致凸的,则存在一个对所有正时间都有定义的流的完全、非紧、光滑和严格凸解。
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引用次数: 0
Jordan algebras over icosahedral cut-and-project quasicrystals 二十面体切割投影准晶体上的约当代数
IF 1.2 3区 数学 Q1 MATHEMATICS Pub Date : 2025-09-11 DOI: 10.1016/j.geomphys.2025.105645
Daniele Corradetti , David Chester , Raymond Aschheim , Klee Irwin
In this paper we present a general setting for aperiodic Jordan algebras arising from icosahedral quasicrystals that are obtainable as model sets of a cut-and-project scheme with a convex acceptance window. In these hypotheses, we show the existence of an aperiodic Jordan algebra structure whose generators are in one-to-one correspondence with elements of the quasicrystal. Moreover, if the acceptance window enjoys a non-crystallographic symmetry arising from H2,H3 or H4 then the resulting Jordan algebra enjoys the same H2,H3 or H4 symmetry. Finally, we present as special cases some examples of Jordan algebras over a Fibonacci-chain quasicrystal, a Penrose tiling, and the Elser-Sloane quasicrystal.
本文给出了由二十面体准晶体产生的非周期约当代数的一般设置,这些代数可作为具有凸接受窗口的切割投影格式的模型集。在这些假设中,我们证明了一个非周期约当代数结构的存在性,其产生子与准晶体的元素是一一对应的。此外,如果接收窗口具有由H2、H3或H4引起的非晶体对称性,则所得的约当代数具有相同的H2、H3或H4对称性。最后,我们给出了斐波那契链准晶体、Penrose平铺和Elser-Sloane准晶体上Jordan代数的一些特例。
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引用次数: 0
On geometry of turbulent flows 论湍流的几何
IF 1.2 3区 数学 Q1 MATHEMATICS Pub Date : 2025-09-11 DOI: 10.1016/j.geomphys.2025.105646
Valentin Lychagin
In this paper, we apply the method of geometrization of random vectors [1] to turbulent media, which we understand as random vector fields on base manifolds. This gives rise to various geometric structures on the tangent as well as cotangent bundles. Among these, the most important is the Mahalanobis metric on the tangent bundle, which allows us to obtain all the necessary ingredients for implementing the scheme [2] to the description of flows in turbulent media. As an illustration, we consider the applications to flows of real gases based on Maxwell–Boltzmann statistics.
本文将随机向量[1]的几何化方法应用于湍流介质,我们将其理解为基流形上的随机向量场。这就产生了切线和共切线束上的各种几何结构。其中,最重要的是切线束上的马氏度规,它使我们能够获得实现方案[2]来描述湍流介质中流动的所有必要成分。作为一个例子,我们考虑了基于麦克斯韦-玻尔兹曼统计在实际气体流动中的应用。
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引用次数: 0
Some basic properties of Ricci almost solitons 里奇几乎孤子的一些基本性质
IF 1.2 3区 数学 Q1 MATHEMATICS Pub Date : 2025-09-11 DOI: 10.1016/j.geomphys.2025.105644
Sharief Deshmukh , Nasser Bin Turki , Hemangi Madhusudan Shah , Gabriel-Eduard Vîlcu
<div><div>Ricci solitons are stationary solutions of a famous PDE for Riemannian metrics, known under the name of Ricci flow equation. An almost Ricci soliton is a remarkable generalization of Ricci solitons by allowing the soliton constant in Ricci flow equation to be a smooth function. In the present paper, we focuss our study on the most important class of almost Ricci solitons, namely gradient Ricci almost solitons <span><math><mo>(</mo><msup><mrow><mi>M</mi></mrow><mrow><mi>n</mi></mrow></msup><mo>,</mo><mi>g</mi><mo>,</mo><mi>∇</mi><mi>σ</mi><mo>,</mo><mi>f</mi><mo>)</mo></math></span> with potential function <em>σ</em> and associated function <em>f</em>, abbreviated as <em>GRRAS</em> <span><math><mo>(</mo><msup><mrow><mi>M</mi></mrow><mrow><mi>n</mi></mrow></msup><mo>,</mo><mi>g</mi><mo>,</mo><mi>∇</mi><mi>σ</mi><mo>,</mo><mi>f</mi><mo>)</mo></math></span>. On a nontrivial <em>GRRAS</em> <span><math><mo>(</mo><msup><mrow><mi>M</mi></mrow><mrow><mi>n</mi></mrow></msup><mo>,</mo><mi>g</mi><mo>,</mo><mi>∇</mi><mi>σ</mi><mo>,</mo><mi>f</mi><mo>)</mo></math></span>, these two functions <em>σ</em> and <em>f</em> together with scalar curvature <em>τ</em> play a significant role. Among the basic properties of a connected <em>GRRAS</em> <span><math><mo>(</mo><msup><mrow><mi>M</mi></mrow><mrow><mi>n</mi></mrow></msup><mo>,</mo><mi>g</mi><mo>,</mo><mi>∇</mi><mi>σ</mi><mo>,</mo><mi>f</mi><mo>)</mo></math></span>, it has been observed that there exists a smooth function <em>δ</em> called the connector of the <em>GRRAS</em> <span><math><mo>(</mo><msup><mrow><mi>M</mi></mrow><mrow><mi>n</mi></mrow></msup><mo>,</mo><mi>g</mi><mo>,</mo><mi>∇</mi><mi>σ</mi><mo>,</mo><mi>f</mi><mo>)</mo></math></span> as it connects the gradients of the potential function <em>σ</em> and the associated function <em>f</em>, respectively. In our first result it is shown that a nontrivial <em>GRRAS</em> <span><math><mo>(</mo><msup><mrow><mi>M</mi></mrow><mrow><mi>n</mi></mrow></msup><mo>,</mo><mi>g</mi><mo>,</mo><mi>∇</mi><mi>σ</mi><mo>,</mo><mi>f</mi><mo>)</mo></math></span> with connector <em>δ</em> gives a generalized soliton, thus establishing an unexpected duality. In our second result, we show that a compact and connected nontrivial <em>GRRAS</em> <span><math><mo>(</mo><msup><mrow><mi>M</mi></mrow><mrow><mi>n</mi></mrow></msup><mo>,</mo><mi>g</mi><mo>,</mo><mi>∇</mi><mi>σ</mi><mo>,</mo><mi>f</mi><mo>)</mo></math></span> with connector <span><math><mi>δ</mi><mo>=</mo><mo>−</mo><mi>c</mi></math></span>, for a positive constant <em>c</em>, and a suitable lower bound on the integral of the Ricci curvature <span><math><mi>R</mi><mi>i</mi><mi>c</mi><mrow><mo>(</mo><mi>∇</mi><mi>σ</mi><mo>,</mo><mi>∇</mi><mi>σ</mi><mo>)</mo></mrow></math></span> is isometric to the <em>n</em>-sphere <span><math><msup><mrow><mi>S</mi></mrow><mrow><mi>n</mi></mrow></msup><mo>(</mo><mi>c</mi><mo>)</mo></math></span> and the converse too is shown to hold. In the third result it is established that a
Ricci孤子是著名的黎曼度量偏微分方程的平稳解,称为Ricci流方程。几乎里奇孤子是里奇孤子的一个显著推广,它允许里奇流方程中的孤子常数是一个光滑函数。本文重点研究了一类最重要的几乎Ricci孤子,即具有势函数σ和关联函数f的梯度Ricci几乎孤子(Mn,g,∇σ,f),简称gras (Mn,g,∇σ,f)。在非平凡gras (Mn,g,∇σ,f)上,这两个函数σ和f与标量曲率τ一起发挥重要作用。在连通GRRAS (Mn,g,∇σ,f)的基本性质中,我们观察到存在一个平滑函数δ,称为GRRAS (Mn,g,∇σ,f)的连接点,因为它分别连接了势函数σ和相关函数f的梯度。在我们的第一个结果中,证明了带接头δ的非平凡gras (Mn,g,∇σ,f)给出了一个广义孤子,从而建立了一个意想不到的对偶性。在我们的第二个结果中,我们证明了一个紧致且连通的非平凡gras (Mn,g,∇σ,f),对于正常数c,以及里奇曲率积分Ric(∇σ,∇σ)的合适下界与n球Sn(c)是等距的,反之也成立。在第三个结果中,建立了具有正标量曲率的完备单连通非平凡gras (Mn,g,∇σ,f),在Ric(∇σ,∇σ)上有一个合适的下界,并且向量∇σ是具有合适特征值的Hessian算子Hσ的特征向量,给出了Sn(c)的刻划。在我们的最终结果中,我们考虑了一个正标量曲率的紧接非平凡gras (Mn,g,∇σ,f),并要求相关函数f满足Poison方程以得到Sn(c)的其他表征。
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In the present paper, we focuss our study on the most important class of almost Ricci solitons, namely gradient Ricci almost solitons &lt;span&gt;&lt;math&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mi&gt;M&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;n&lt;/mi&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;mo&gt;,&lt;/mo&gt;&lt;mi&gt;g&lt;/mi&gt;&lt;mo&gt;,&lt;/mo&gt;&lt;mi&gt;∇&lt;/mi&gt;&lt;mi&gt;σ&lt;/mi&gt;&lt;mo&gt;,&lt;/mo&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt; with potential function &lt;em&gt;σ&lt;/em&gt; and associated function &lt;em&gt;f&lt;/em&gt;, abbreviated as &lt;em&gt;GRRAS&lt;/em&gt; &lt;span&gt;&lt;math&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mi&gt;M&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;n&lt;/mi&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;mo&gt;,&lt;/mo&gt;&lt;mi&gt;g&lt;/mi&gt;&lt;mo&gt;,&lt;/mo&gt;&lt;mi&gt;∇&lt;/mi&gt;&lt;mi&gt;σ&lt;/mi&gt;&lt;mo&gt;,&lt;/mo&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt;. On a nontrivial &lt;em&gt;GRRAS&lt;/em&gt; &lt;span&gt;&lt;math&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mi&gt;M&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;n&lt;/mi&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;mo&gt;,&lt;/mo&gt;&lt;mi&gt;g&lt;/mi&gt;&lt;mo&gt;,&lt;/mo&gt;&lt;mi&gt;∇&lt;/mi&gt;&lt;mi&gt;σ&lt;/mi&gt;&lt;mo&gt;,&lt;/mo&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt;, these two functions &lt;em&gt;σ&lt;/em&gt; and &lt;em&gt;f&lt;/em&gt; together with scalar curvature &lt;em&gt;τ&lt;/em&gt; play a significant role. Among the basic properties of a connected &lt;em&gt;GRRAS&lt;/em&gt; &lt;span&gt;&lt;math&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mi&gt;M&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;n&lt;/mi&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;mo&gt;,&lt;/mo&gt;&lt;mi&gt;g&lt;/mi&gt;&lt;mo&gt;,&lt;/mo&gt;&lt;mi&gt;∇&lt;/mi&gt;&lt;mi&gt;σ&lt;/mi&gt;&lt;mo&gt;,&lt;/mo&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt;, it has been observed that there exists a smooth function &lt;em&gt;δ&lt;/em&gt; called the connector of the &lt;em&gt;GRRAS&lt;/em&gt; &lt;span&gt;&lt;math&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mi&gt;M&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;n&lt;/mi&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;mo&gt;,&lt;/mo&gt;&lt;mi&gt;g&lt;/mi&gt;&lt;mo&gt;,&lt;/mo&gt;&lt;mi&gt;∇&lt;/mi&gt;&lt;mi&gt;σ&lt;/mi&gt;&lt;mo&gt;,&lt;/mo&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt; as it connects the gradients of the potential function &lt;em&gt;σ&lt;/em&gt; and the associated function &lt;em&gt;f&lt;/em&gt;, respectively. In our first result it is shown that a nontrivial &lt;em&gt;GRRAS&lt;/em&gt; &lt;span&gt;&lt;math&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mi&gt;M&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;n&lt;/mi&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;mo&gt;,&lt;/mo&gt;&lt;mi&gt;g&lt;/mi&gt;&lt;mo&gt;,&lt;/mo&gt;&lt;mi&gt;∇&lt;/mi&gt;&lt;mi&gt;σ&lt;/mi&gt;&lt;mo&gt;,&lt;/mo&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt; with connector &lt;em&gt;δ&lt;/em&gt; gives a generalized soliton, thus establishing an unexpected duality. In our second result, we show that a compact and connected nontrivial &lt;em&gt;GRRAS&lt;/em&gt; &lt;span&gt;&lt;math&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mi&gt;M&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;n&lt;/mi&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;mo&gt;,&lt;/mo&gt;&lt;mi&gt;g&lt;/mi&gt;&lt;mo&gt;,&lt;/mo&gt;&lt;mi&gt;∇&lt;/mi&gt;&lt;mi&gt;σ&lt;/mi&gt;&lt;mo&gt;,&lt;/mo&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt; with connector &lt;span&gt;&lt;math&gt;&lt;mi&gt;δ&lt;/mi&gt;&lt;mo&gt;=&lt;/mo&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;mi&gt;c&lt;/mi&gt;&lt;/math&gt;&lt;/span&gt;, for a positive constant &lt;em&gt;c&lt;/em&gt;, and a suitable lower bound on the integral of the Ricci curvature &lt;span&gt;&lt;math&gt;&lt;mi&gt;R&lt;/mi&gt;&lt;mi&gt;i&lt;/mi&gt;&lt;mi&gt;c&lt;/mi&gt;&lt;mrow&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mi&gt;∇&lt;/mi&gt;&lt;mi&gt;σ&lt;/mi&gt;&lt;mo&gt;,&lt;/mo&gt;&lt;mi&gt;∇&lt;/mi&gt;&lt;mi&gt;σ&lt;/mi&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt; is isometric to the &lt;em&gt;n&lt;/em&gt;-sphere &lt;span&gt;&lt;math&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mi&gt;S&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;n&lt;/mi&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mi&gt;c&lt;/mi&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt; and the converse too is shown to hold. In the third result it is established that a ","PeriodicalId":55602,"journal":{"name":"Journal of Geometry and Physics","volume":"217 ","pages":"Article 105644"},"PeriodicalIF":1.2,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145104705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On the generalized Fourier transform for the modified Hunter-Saxton equation 修正Hunter-Saxton方程的广义傅里叶变换
IF 1.2 3区 数学 Q1 MATHEMATICS Pub Date : 2025-09-11 DOI: 10.1016/j.geomphys.2025.105647
Miao-Miao Xie, Shou-Fu Tian, Xing-Jie Yan
In this work, by the squared eigenfunctions of the spectral problem for the modified Hunter-Saxton equation, we derive the generalized Fourier transform and the symplectic basis for the equation. First, we present the symmetry and the asymptotic behavior of the Jost solutions and the scattering data from the inverse scattering transform. Then the completeness relations of the Jost solutions and the squared eigenfunctions are derived by constructing two meromorphic functions, from which we can derive the generalized Fourier transform. Finally, we verified that a set of variables defined by the scattering data and the squared eigenfunctions form the symplectic basis of the phase space, which gives the description in symplectic geometry for the modified Hunter-Saxton equation.
本文利用改进Hunter-Saxton方程的谱问题的平方特征函数,导出了该方程的广义傅里叶变换和辛基。首先,我们给出了Jost解的对称性和渐近性,并从散射逆变换中得到了散射数据。然后通过构造两个亚纯函数,导出了约斯特解与特征函数平方的完备关系,并由此导出了广义傅里叶变换。最后,我们验证了一组由散射数据和平方特征函数定义的变量构成相空间的辛基,给出了修正的hunt - saxton方程在辛几何中的描述。
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引用次数: 0
Corrigendum to “Optimal inequalities involving Casorati curvatures along Riemannian maps and Riemannian submersions for Sasakian space forms” [J. Geom. Phys. 210 (2025) 105417] “Sasakian空间形式的riemann映射和riemann淹没涉及Casorati曲率的最优不等式”[J]。几何学。物理学报,210 (2025)105417]
IF 1.2 3区 数学 Q1 MATHEMATICS Pub Date : 2025-09-11 DOI: 10.1016/j.geomphys.2025.105643
Gülistan Polat , Jae Won Lee , Bayram Şahin
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引用次数: 0
Geodesic orbit metrics on homogeneous spaces arising from generalized flag manifolds with two irreducible summands 具有两个不可约和的广义标志流形在齐次空间上的测地线轨道度量
IF 1.2 3区 数学 Q1 MATHEMATICS Pub Date : 2025-09-08 DOI: 10.1016/j.geomphys.2025.105641
Chao Chen , Huibin Chen , Zhiqi Chen
This paper examines invariant geodesic orbit metrics on a class of homogeneous spaces derived from generalized flag manifolds with two irreducible summands. We demonstrate that all invariant geodesic orbit metrics on these homogeneous spaces are naturally reductive.
研究一类由两个不可约和的广义标志流形导出的齐次空间上的不变测地线轨道度量。我们证明了这些齐次空间上所有不变测地线轨道度量都是自然约化的。
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引用次数: 0
Quantum Wasserstein distances for quantum permutation groups 量子置换群的量子沃瑟斯坦距离
IF 1.2 3区 数学 Q1 MATHEMATICS Pub Date : 2025-09-08 DOI: 10.1016/j.geomphys.2025.105637
Anshu , David Jekel , Therese Basa Landry
We seek an analog for the quantum permutation group Sn+ of the normalized Hamming distance for permutations. We define three distances on the tracial state space of C(Sn+) that generalize the L1-Wasserstein distance of probability measures on Sn equipped with the normalized Hamming metric, for which we demonstrate basic metric properties, subadditivity under convolution, and density of the Lipschitz elements in the C-algebra.
我们寻找了排列的归一化汉明距离的量子排列群Sn+的类比。我们在C(Sn+)的跟踪状态空间上定义了三个距离,这些距离推广了Sn上概率测度的L1-Wasserstein距离,并配有归一化的Hamming度量,证明了基本度量性质、卷积下的子可加性以及C -代数中Lipschitz元素的密度。
{"title":"Quantum Wasserstein distances for quantum permutation groups","authors":"Anshu ,&nbsp;David Jekel ,&nbsp;Therese Basa Landry","doi":"10.1016/j.geomphys.2025.105637","DOIUrl":"10.1016/j.geomphys.2025.105637","url":null,"abstract":"<div><div>We seek an analog for the quantum permutation group <span><math><msubsup><mrow><mi>S</mi></mrow><mrow><mi>n</mi></mrow><mrow><mo>+</mo></mrow></msubsup></math></span> of the normalized Hamming distance for permutations. We define three distances on the tracial state space of <span><math><mi>C</mi><mo>(</mo><msubsup><mrow><mi>S</mi></mrow><mrow><mi>n</mi></mrow><mrow><mo>+</mo></mrow></msubsup><mo>)</mo></math></span> that generalize the <span><math><msup><mrow><mi>L</mi></mrow><mrow><mn>1</mn></mrow></msup></math></span>-Wasserstein distance of probability measures on <span><math><msub><mrow><mi>S</mi></mrow><mrow><mi>n</mi></mrow></msub></math></span> equipped with the normalized Hamming metric, for which we demonstrate basic metric properties, subadditivity under convolution, and density of the Lipschitz elements in the <span><math><msup><mrow><mi>C</mi></mrow><mrow><mo>⁎</mo></mrow></msup></math></span>-algebra.</div></div>","PeriodicalId":55602,"journal":{"name":"Journal of Geometry and Physics","volume":"217 ","pages":"Article 105637"},"PeriodicalIF":1.2,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145095163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Unicity problem on meromorphic mappings of complete Kähler manifolds 完全Kähler流形亚纯映射的唯一性问题
IF 1.2 3区 数学 Q1 MATHEMATICS Pub Date : 2025-09-04 DOI: 10.1016/j.geomphys.2025.105639
Mengyue Liu, Xianjing Dong
Nevanlinna's unicity theorems have always held an important position in value distribution theory. The main purpose of this paper is to generalize the classical Nevanlinna's unicity theorems to non-compact complete Kähler manifolds with either non-positive sectional curvature or nonnegative Ricci curvature.
内万林纳的唯一性定理在价值分配理论中一直占有重要地位。本文的主要目的是将经典Nevanlinna的唯一性定理推广到具有非正截面曲率或非负Ricci曲率的非紧完全Kähler流形。
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引用次数: 0
3-Leibniz-Lie triple systems, deformations and cohomologies of nonabelian embedding tensors between Lie triple systems 3-莱布尼兹-李三系,李三系间非abel嵌入张量的变形与上同调
IF 1.2 3区 数学 Q1 MATHEMATICS Pub Date : 2025-09-04 DOI: 10.1016/j.geomphys.2025.105638
Wen Teng
In this paper, first we introduce the notion of nonabelian embedding tensors between Lie triple systems and show that nonabelian embedding tensors induce naturally 3-Leibniz algebras. Next, we introduce the notion of a 3-Leibniz-Lie triple system, which is the underlying algebraic structure of a nonabelian embedding tensor between Lie triple systems. Besides, we construct an L-algebra whose Maurer-Cartan elements are nonabelian embedding tensors. Then, we have the twisted L-algebra that governs deformations of nonabelian embedding tensors. Following this, we establish the cohomology of a nonabelian embedding tensor between Lie triple systems and realize it as the cohomology of the descendent 3-Leibniz algebra with coefficients in a suitable representation. As applications, we consider linear deformations of a nonabelian embedding tensor between Lie triple systems and demonstrate that they are governed by the above-established cohomology. Furthermore, the notion of Nijenhuis elements associated with a nonabelian embedding tensor is introduced to characterize trivial linear deformations. Finally, we provide relationships between nonabelian embedding tensors on Lie algebras and associated Lie triple systems.
本文首先在李三元系统中引入了非阿贝尔嵌入张量的概念,并证明了非阿贝尔嵌入张量可以自然地导出3-莱布尼兹代数。接下来,我们引入了3-莱布尼兹-李三元系统的概念,它是李三元系统之间的非abel嵌入张量的基本代数结构。此外,我们构造了一个毛雷尔-卡坦元素为非贝尔嵌入张量的L∞代数。然后,我们有控制非阿贝尔嵌入张量变形的扭曲L∞代数。在此基础上,我们建立了李三元系统间非贝尔嵌入张量的上同调,并将其实现为具有系数的派生3-莱布尼兹代数的上同调。作为应用,我们考虑了李三元系统之间的非abel嵌入张量的线性变形,并证明了它们受上述上同调的约束。此外,引入了与非abel嵌入张量相关的Nijenhuis元的概念来描述平凡的线性变形。最后,我们给出了李代数上的非abel嵌入张量与相关李三元系统之间的关系。
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引用次数: 0
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Journal of Geometry and Physics
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