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Boundary quasi-analyticity and a Phragmén–Lindelöf type theorem in classes of functions of bounded type in tubular domains 管状域中有界型函数类的边界拟分析性和Phragmén–Lindelöf型定理
IF 0.8 4区 数学 Q2 MATHEMATICS Pub Date : 2022-10-31 DOI: 10.1090/spmj/1741
F. Shamoyan
<p>A complete description is obtained of the Carleman classes on <inline-formula content-type="math/mathml"><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="double-struck upper R Superscript n"> <mml:semantics> <mml:msup> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi mathvariant="double-struck">R</mml:mi> </mml:mrow> <mml:mi>n</mml:mi> </mml:msup> <mml:annotation encoding="application/x-tex">mathbb {R}^n</mml:annotation> </mml:semantics></mml:math></inline-formula> such that every function of bounded type in <inline-formula content-type="math/mathml"><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="double-struck upper C Subscript plus Superscript n"> <mml:semantics> <mml:msubsup> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi mathvariant="double-struck">C</mml:mi> </mml:mrow> <mml:mo>+</mml:mo> <mml:mi>n</mml:mi> </mml:msubsup> <mml:annotation encoding="application/x-tex">mathbb {C}^n_+</mml:annotation> </mml:semantics></mml:math></inline-formula> whose boundary values belong to the class under study is in fact a member of the corresponding Carleman class in <inline-formula content-type="math/mathml"><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="double-struck upper C Subscript plus Superscript n Baseline union double-struck upper R Superscript n"> <mml:semantics> <mml:mrow> <mml:msubsup> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi mathvariant="double-struck">C</mml:mi> </mml:mrow> <mml:mo>+</mml:mo> <mml:mi>n</mml:mi> </mml:msubsup> <mml:mo>∪<!-- ∪ --></mml:mo> <mml:msup> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi mathvariant="double-struck">R</mml:mi> </mml:mrow> <mml:mi>n</mml:mi> </mml:msup> </mml:mrow> <mml:annotation encoding="application/x-tex">mathbb {C}^n_+cup mathbb {R}^n</mml:annotation> </mml:semantics></mml:math></inline-formula>. Also a refinement of the classical Salinas theorem is obtained, namely: under the conditions of the Salinas theorem on quasi-analyticity, instead of the assumption that a function belongs to the Carleman class in <inline-formula content-type="math/mathml"><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="double-struck upper C Subscript plus Superscript n Baseline union double-struck upper R Superscript n"> <mml:semantics> <mml:mrow> <mml:msubsup> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi mathvariant="double-struck">C</mml:mi> </mml:mrow> <mml:mo>+</mml:mo> <mml:mi>n</mml:mi> </mml:msubsup> <mml:mo>∪<!-- ∪ --></mml:mo> <mml:msup> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi mathvariant="double-struck">R</mml:mi> </mml:mrow> <mml:mi>n</mml:mi> </mml:msup> </mml:mrow> <mml:annotation encoding="application/x-tex">mat
得到了Rnmathbb{R}^n上Carleman类的一个完整描述,使得C+nmathb{C}^n_+中的每一个有界类型的函数,其边值属于所研究的类,实际上都是C++中相应Carleman族的一员n∈Rnmathbb{C}^n_+cupmathbb{R}^n。得到了经典Salinas定理的一个改进:在Salinas理论关于拟分析性的条件下,不是假设一个函数属于C+nõRnmathbb{C}^n_+cupmathbb{R}^n中的Carleman类,并且该函数在C+nmathb{C}^n_+中是有界的。
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引用次数: 0
Reflection groups and the pizza theorem 反射群与pizza定理
IF 0.8 4区 数学 Q2 MATHEMATICS Pub Date : 2022-10-31 DOI: 10.1090/spmj/1732
Yu. Brailov
The classical theorem about cutting a round pizza into 8 pieces with straight cuts passing through an arbitrary internal point and forming angles of 45 degrees says that the total areas of odd and even pieces are equal if those pieces are ordered around the center of cutting. The current paper proposes a generalization of the Pizza theorem to any dimension and discovers a relationship with the finite reflection group of the series B n B_n .
关于用穿过任意内部点并形成45度角的直切口将圆形披萨切成8块的经典定理表明,如果奇数块和偶数块围绕切割中心排列,则这些块的总面积相等。本文将Pizza定理推广到任意维,并发现了它与BnB_n级数的有限反射群之间的关系。
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引用次数: 1
Supercharacters for parabolic contractions of finite groups of 𝐴,𝐵,𝐶,𝐷 Lie types Lie类型的有限群的抛物型收缩的上字符
IF 0.8 4区 数学 Q2 MATHEMATICS Pub Date : 2022-10-31 DOI: 10.1090/spmj/1738
A. Panov
Supercharacter theories are constructed for the finite groups obtained by parabolic contraction from simple groups of A , B , C , D A,B,C,D Lie types. Supercharacters and superclasses are classified in terms of rook placements in root systems.
对于由A、B、C、DA、B、C、D李型的简单群通过抛物收缩得到的有限群,构造了超特征理论。超级字符和超类根据根系统中的rook位置进行分类。
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引用次数: 0
Upper estimates of the Morse numbers for the matrix elements of real linear irreducible representations of compact connected simple Lie groups 紧连通单李群实线性不可约表示矩阵元的Morse数的上估计
IF 0.8 4区 数学 Q2 MATHEMATICS Pub Date : 2022-10-31 DOI: 10.1090/spmj/1737
M. Meshcheryakov
The Morse numbers of spaces of matrix elements for real irreducible linear representations of compact connected simple Lie groups are estimate from above in a variety of ways, in terms of the dimension, the Dynkin index of the representation, the eigenvalues of the invariant Laplace operator, and the volume of the group.
对紧连通单李群的实不可约线性表示的矩阵元素空间的莫尔斯数,从维数、表示的Dynkin指数、不变拉普拉斯算子的特征值和群的体积等方面,从上述出发,用各种方法进行了估计。
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引用次数: 0
Geometry of planar curves intersecting many lines at a few points 平面曲线与许多直线相交于几个点的几何学
IF 0.8 4区 数学 Q2 MATHEMATICS Pub Date : 2022-10-31 DOI: 10.1090/spmj/1742
D. Vardakis, A. Volberg
The local Lipschitz property is shown for the graphs avoiding multiple point intersection with lines directed in a given cone. The assumption is much stronger than those of Marstrand’s well-known theorem, but the conclusion is much stronger too. Additionally, a continuous curve with a similar property is σ sigma -finite with respect to Hausdorff length and an estimate on the Hausdorff measure of each “piece” is found.
给出了避免在给定圆锥上与直线相交的多点图的局部Lipschitz性质。这个假设比著名的马斯特兰德定理要强得多,但结论也要强得多。此外,具有类似性质的连续曲线对Hausdorff长度是σ σ -有限的,并且找到了每个“片段”的Hausdorff测度的估计。
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引用次数: 0
Homotopic invariance of dihedral homologies for 𝐴_{∞}-algebras with involution 具有对合的𝐴_{∞}-代数的二面体同调不变性
IF 0.8 4区 数学 Q2 MATHEMATICS Pub Date : 2022-10-31 DOI: 10.1090/spmj/1736
S. Lapin

It is established that the dihedral homologies of involutive A A_{infty } -algebras are homotopically invariant with respect to the homotopy equivalences of involutive A A_{infty } -algebras. As a consequence, it is shown that over any field, the dihedral homologies of a topological space are isomorphic to the dihedral homologies of the involutive A A_{infty } -algebra of homologies for the simplicial group of Kan loops of the original topological space.

建立了对合A∞A_的二面体同调{infty } -代数对于对合A∞A_的同伦等价是同伦不变的{infty } -代数。结果表明,在任意域上,拓扑空间的二面体同构与对合a∞A_的二面体同构是同构的{infty } 原始拓扑空间的Kan环的简群的-同调代数。
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引用次数: 0
An effective algorithm for deciding the solvability of a system of polynomial equations over 𝑝-adic integers 在𝑝-adic整数上决定多项式方程组可解性的有效算法
IF 0.8 4区 数学 Q2 MATHEMATICS Pub Date : 2022-10-31 DOI: 10.1090/spmj/1740
A. Chistov
<p>Consider a system of polynomial equations in <inline-formula content-type="math/mathml"><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="n"> <mml:semantics> <mml:mi>n</mml:mi> <mml:annotation encoding="application/x-tex">n</mml:annotation> </mml:semantics></mml:math></inline-formula> variables of degrees at most <inline-formula content-type="math/mathml"><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="d"> <mml:semantics> <mml:mi>d</mml:mi> <mml:annotation encoding="application/x-tex">d</mml:annotation> </mml:semantics></mml:math></inline-formula> with integer coefficients whose lengths are at most <inline-formula content-type="math/mathml"><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="upper M"> <mml:semantics> <mml:mi>M</mml:mi> <mml:annotation encoding="application/x-tex">M</mml:annotation> </mml:semantics></mml:math></inline-formula>. By using a construction close to smooth stratification of algebraic varieties, it is shown that one can construct a positive integer <disp-formula content-type="math/mathml"><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="normal upper Delta greater-than 2 Superscript upper M left-parenthesis n d right-parenthesis Super Superscript c 2 Super Super Superscript n Super Superscript n cubed"> <mml:semantics> <mml:mrow> <mml:mi mathvariant="normal">Δ<!-- Δ --></mml:mi> <mml:mo>></mml:mo> <mml:msup> <mml:mn>2</mml:mn> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi>M</mml:mi> <mml:mo stretchy="false">(</mml:mo> <mml:mi>n</mml:mi> <mml:mi>d</mml:mi> <mml:msup> <mml:mo stretchy="false">)</mml:mo> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mi>c</mml:mi> <mml:mspace width="thinmathspace" /> <mml:msup> <mml:mn>2</mml:mn> <mml:mi>n</mml:mi> </mml:msup> <mml:msup> <mml:mi>n</mml:mi> <mml:mn>3</mml:mn> </mml:msup> </mml:mrow> </mml:msup> </mml:mrow> </mml:msup> </mml:mrow> <mml:annotation encoding="application/x-tex">begin{equation*} Delta > 2^{M(nd)^{c, 2^n n^3}} end{equation*}</mml:annotation> </mml:semantics></mml:math></disp-formula> (here <inline-formula content-type="math/mathml"><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="c greater-than 0"> <mml:semantics> <mml:mrow> <mml:mi>c</mml:mi> <mml:mo>></mml:mo> <mml:mn>0</mml:mn> </mml:mrow> <mml:annotation encoding="application/x-tex">c>0</mml:annotation> </mml:semantics></mml:math></inline-formula> is a constant) depending on these polynomials and having the following property. For every prime <inline-formula content-type="math/mathml"><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="
考虑一个多项式方程组,其中n个变量的度数最多为d d,其整数系数的长度最多为M M。利用代数变量接近光滑分层的构造,我们可以构造一个正整数Δ >m (nd) c2n3begin{equation*} Delta > 2^{M(nd)^{c, 2^n n^3}} end{equation*}(这里c>0 c>0是一个常数)依赖于这些多项式,并且有以下属性。对于每一个素数p p,所研究的系统在p个p进数环中有解当且仅当它对最小整数N N有模p N p^N的解使得p N p^N不除Δ Delta。这改进了先前已知的,目前由B. J. Birch和K. McCann给出的经典结果。
{"title":"An effective algorithm for deciding the solvability of a system of polynomial equations over 𝑝-adic integers","authors":"A. Chistov","doi":"10.1090/spmj/1740","DOIUrl":"https://doi.org/10.1090/spmj/1740","url":null,"abstract":"&lt;p&gt;Consider a system of polynomial equations in &lt;inline-formula content-type=\"math/mathml\"&gt;\u0000&lt;mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" alttext=\"n\"&gt;\u0000 &lt;mml:semantics&gt;\u0000 &lt;mml:mi&gt;n&lt;/mml:mi&gt;\u0000 &lt;mml:annotation encoding=\"application/x-tex\"&gt;n&lt;/mml:annotation&gt;\u0000 &lt;/mml:semantics&gt;\u0000&lt;/mml:math&gt;\u0000&lt;/inline-formula&gt; variables of degrees at most &lt;inline-formula content-type=\"math/mathml\"&gt;\u0000&lt;mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" alttext=\"d\"&gt;\u0000 &lt;mml:semantics&gt;\u0000 &lt;mml:mi&gt;d&lt;/mml:mi&gt;\u0000 &lt;mml:annotation encoding=\"application/x-tex\"&gt;d&lt;/mml:annotation&gt;\u0000 &lt;/mml:semantics&gt;\u0000&lt;/mml:math&gt;\u0000&lt;/inline-formula&gt; with integer coefficients whose lengths are at most &lt;inline-formula content-type=\"math/mathml\"&gt;\u0000&lt;mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" alttext=\"upper M\"&gt;\u0000 &lt;mml:semantics&gt;\u0000 &lt;mml:mi&gt;M&lt;/mml:mi&gt;\u0000 &lt;mml:annotation encoding=\"application/x-tex\"&gt;M&lt;/mml:annotation&gt;\u0000 &lt;/mml:semantics&gt;\u0000&lt;/mml:math&gt;\u0000&lt;/inline-formula&gt;. By using a construction close to smooth stratification of algebraic varieties, it is shown that one can construct a positive integer &lt;disp-formula content-type=\"math/mathml\"&gt;\u0000&lt;mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" alttext=\"normal upper Delta greater-than 2 Superscript upper M left-parenthesis n d right-parenthesis Super Superscript c 2 Super Super Superscript n Super Superscript n cubed\"&gt;\u0000 &lt;mml:semantics&gt;\u0000 &lt;mml:mrow&gt;\u0000 &lt;mml:mi mathvariant=\"normal\"&gt;Δ&lt;!-- Δ --&gt;&lt;/mml:mi&gt;\u0000 &lt;mml:mo&gt;&gt;&lt;/mml:mo&gt;\u0000 &lt;mml:msup&gt;\u0000 &lt;mml:mn&gt;2&lt;/mml:mn&gt;\u0000 &lt;mml:mrow class=\"MJX-TeXAtom-ORD\"&gt;\u0000 &lt;mml:mi&gt;M&lt;/mml:mi&gt;\u0000 &lt;mml:mo stretchy=\"false\"&gt;(&lt;/mml:mo&gt;\u0000 &lt;mml:mi&gt;n&lt;/mml:mi&gt;\u0000 &lt;mml:mi&gt;d&lt;/mml:mi&gt;\u0000 &lt;mml:msup&gt;\u0000 &lt;mml:mo stretchy=\"false\"&gt;)&lt;/mml:mo&gt;\u0000 &lt;mml:mrow class=\"MJX-TeXAtom-ORD\"&gt;\u0000 &lt;mml:mi&gt;c&lt;/mml:mi&gt;\u0000 &lt;mml:mspace width=\"thinmathspace\" /&gt;\u0000 &lt;mml:msup&gt;\u0000 &lt;mml:mn&gt;2&lt;/mml:mn&gt;\u0000 &lt;mml:mi&gt;n&lt;/mml:mi&gt;\u0000 &lt;/mml:msup&gt;\u0000 &lt;mml:msup&gt;\u0000 &lt;mml:mi&gt;n&lt;/mml:mi&gt;\u0000 &lt;mml:mn&gt;3&lt;/mml:mn&gt;\u0000 &lt;/mml:msup&gt;\u0000 &lt;/mml:mrow&gt;\u0000 &lt;/mml:msup&gt;\u0000 &lt;/mml:mrow&gt;\u0000 &lt;/mml:msup&gt;\u0000 &lt;/mml:mrow&gt;\u0000 &lt;mml:annotation encoding=\"application/x-tex\"&gt;begin{equation*} Delta &gt; 2^{M(nd)^{c, 2^n n^3}} end{equation*}&lt;/mml:annotation&gt;\u0000 &lt;/mml:semantics&gt;\u0000&lt;/mml:math&gt;\u0000&lt;/disp-formula&gt;\u0000 (here &lt;inline-formula content-type=\"math/mathml\"&gt;\u0000&lt;mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" alttext=\"c greater-than 0\"&gt;\u0000 &lt;mml:semantics&gt;\u0000 &lt;mml:mrow&gt;\u0000 &lt;mml:mi&gt;c&lt;/mml:mi&gt;\u0000 &lt;mml:mo&gt;&gt;&lt;/mml:mo&gt;\u0000 &lt;mml:mn&gt;0&lt;/mml:mn&gt;\u0000 &lt;/mml:mrow&gt;\u0000 &lt;mml:annotation encoding=\"application/x-tex\"&gt;c&gt;0&lt;/mml:annotation&gt;\u0000 &lt;/mml:semantics&gt;\u0000&lt;/mml:math&gt;\u0000&lt;/inline-formula&gt; is a constant) depending on these polynomials and having the following property. For every prime &lt;inline-formula content-type=\"math/mathml\"&gt;\u0000&lt;mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" alttext=\"","PeriodicalId":51162,"journal":{"name":"St Petersburg Mathematical Journal","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47491456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 3
Problems on the loss of heat: herd instinct versus individual feelings 关于热量损失的问题:群体本能与个人感受
IF 0.8 4区 数学 Q2 MATHEMATICS Pub Date : 2022-08-24 DOI: 10.1090/spmj/1725
A. Solynin
Several problems are discussed concerning steady-state distribution of heat in domains in R 3 mathbb {R}^3 that are complementary to a finite number of balls. The study of these problems was initiated by M. L. Glasser in 1977. Then, in 1978, M. L. Glasser and S. G. Davison presented numerical evidence that the heat flux from two equal balls in R 3 mathbb {R}^3 decreases when the balls move closer to each other. Those authors interpreted this result in terms of the behavioral habits of sleeping armadillos, the closer animals to each other, the less heat they lose. Much later, in 2003, A. Eremenko proved this monotonicity property rigorously and suggested new questions on the heat fluxes.The goal of this paper is to survey recent developments in this area, provide answers to some open questions, and draw attention to several challenging open problems concerning heat fluxes from configurations consisting of n ≥ 2 nge 2 balls in R 3 mathbb {R}^3 .
讨论了与有限个球互补的R3mathbb{R}^3域中热的稳态分布的几个问题。对这些问题的研究是由M.L.Glasser于1977年发起的。然后,在1978年,M.L.Glasser和S.G.Davison提出了数值证据,证明当球彼此靠近时,R3中两个相等球的热通量会减少。这些作者从睡眠中的armadillos的行为习惯来解释这一结果,动物之间距离越近,它们失去的热量就越少。很久以后,在2003年,A.Eremenko严格地证明了这种单调性,并提出了关于热通量的新问题。本文的目的是调查这一领域的最新发展,回答一些悬而未决的问题,并提请注意关于由R3mathbb{R}^3中的n≥2nge2个球组成的配置的热通量的几个具有挑战性的悬而未决的问题。
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引用次数: 5
Approximation by polyanalytic functions in Hölder spaces Hölder空间中多解析函数的逼近
IF 0.8 4区 数学 Q2 MATHEMATICS Pub Date : 2022-08-24 DOI: 10.1090/spmj/1728
M. Mazalov
The problem of approximation of functions on plane compact sets by polyanalytic functions of order higher than two in the Hölder spaces C m C^m , m ∈ ( 0 , 1 ) min (0,1) , is significantly more complicated than the well-studied problem of approximation by analytic functions. In particular, the fundamental solutions of the corresponding operators belong to all the indicated Hölder spaces, but this does not lead to the triviality of the approximation conditions.In the model case of polyanalytic functions of order 3, approximation conditions and a constructive approximation method generalizing the Vitushkin localization method are studied. Some unsolved problems are formulated.
在Hölder空间C m C^m,m∈(0,1)min(0,0)中,用二阶以上的多解析函数逼近平面紧集上的函数的问题比用解析函数逼近的问题要复杂得多。特别地,对应算子的基本解属于所有指示的Hölder空间,但这并不导致近似条件的平凡性。在3阶多解析函数的模型情况下,研究了逼近条件和推广Vitushkin局部化方法的构造逼近方法。提出了一些尚未解决的问题。
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引用次数: 0
A new characterization of GCD domains of formal power series 形式幂级数的GCD域的新表征
IF 0.8 4区 数学 Q2 MATHEMATICS Pub Date : 2022-08-24 DOI: 10.1090/spmj/1731
A. Hamed
<p>By using the <inline-formula content-type="math/mathml"><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="v"> <mml:semantics> <mml:mi>v</mml:mi> <mml:annotation encoding="application/x-tex">v</mml:annotation> </mml:semantics></mml:math></inline-formula>-operation, a new characterization of the property for a power series ring to be a GCD domain is discussed. It is shown that if <inline-formula content-type="math/mathml"><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="upper D"> <mml:semantics> <mml:mi>D</mml:mi> <mml:annotation encoding="application/x-tex">D</mml:annotation> </mml:semantics></mml:math></inline-formula> is a <inline-formula content-type="math/mathml"><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="upper U upper F upper D"> <mml:semantics> <mml:mi>UFD</mml:mi> <mml:annotation encoding="application/x-tex">operatorname {UFD}</mml:annotation> </mml:semantics></mml:math></inline-formula>, then <inline-formula content-type="math/tex"><tex-math>DlBrack XrBrack </tex-math></inline-formula> is a GCD domain if and only if for any two integral <inline-formula content-type="math/mathml"><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="v"> <mml:semantics> <mml:mi>v</mml:mi> <mml:annotation encoding="application/x-tex">v</mml:annotation> </mml:semantics></mml:math></inline-formula>-invertible <inline-formula content-type="math/mathml"><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="v"> <mml:semantics> <mml:mi>v</mml:mi> <mml:annotation encoding="application/x-tex">v</mml:annotation> </mml:semantics></mml:math></inline-formula>-ideals <inline-formula content-type="math/mathml"><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="upper I"> <mml:semantics> <mml:mi>I</mml:mi> <mml:annotation encoding="application/x-tex">I</mml:annotation> </mml:semantics></mml:math></inline-formula> and <inline-formula content-type="math/mathml"><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="upper J"> <mml:semantics> <mml:mi>J</mml:mi> <mml:annotation encoding="application/x-tex">J</mml:annotation> </mml:semantics></mml:math></inline-formula> of <inline-formula content-type="math/tex"><tex-math>DlBrack XrBrack </tex-math></inline-formula> such that <inline-formula content-type="math/mathml"><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="left-parenthesis upper I upper J right-parenthesis Subscript 0 Baseline not-equals left-parenthesis 0 right-parenthesis comma"> <mml:semantics> <mml:mrow> <mml:mo stretchy="false">(</mml:mo> <mml:mi>I</mml:mi> <mml:mi>J</mml:mi> <mml:msub> <mml:mo stretchy="false">)</mml:mo> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mn>0</mml:mn> </mml:mrow> </mml:msub> <mml:mo>≠<!-- ≠ --></mml:mo> <mml:mo stretchy="false">(<
利用v-v运算,讨论了幂级数环为GCD域性质的一个新的刻画。证明了如果D D是一个UFD算子名{UFD},则D Brack X Brack是一个GCD域当且仅当对于D Brack的任意两个积分v v-可逆v v-理想I I和J J使得(I J)0≠(0),(IJ)_{0}neq(0),我们有((IJ,式中I0={f(0)Şf∈I}I_0=在I}中。这表明,如果D是GCD结构域,使得DlBrack XrBrack是ππ-结构域,那么DlBrackXrBlack是GCD域。
{"title":"A new characterization of GCD domains of formal power series","authors":"A. Hamed","doi":"10.1090/spmj/1731","DOIUrl":"https://doi.org/10.1090/spmj/1731","url":null,"abstract":"&lt;p&gt;By using the &lt;inline-formula content-type=\"math/mathml\"&gt;\u0000&lt;mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" alttext=\"v\"&gt;\u0000 &lt;mml:semantics&gt;\u0000 &lt;mml:mi&gt;v&lt;/mml:mi&gt;\u0000 &lt;mml:annotation encoding=\"application/x-tex\"&gt;v&lt;/mml:annotation&gt;\u0000 &lt;/mml:semantics&gt;\u0000&lt;/mml:math&gt;\u0000&lt;/inline-formula&gt;-operation, a new characterization of the property for a power series ring to be a GCD domain is discussed. It is shown that if &lt;inline-formula content-type=\"math/mathml\"&gt;\u0000&lt;mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" alttext=\"upper D\"&gt;\u0000 &lt;mml:semantics&gt;\u0000 &lt;mml:mi&gt;D&lt;/mml:mi&gt;\u0000 &lt;mml:annotation encoding=\"application/x-tex\"&gt;D&lt;/mml:annotation&gt;\u0000 &lt;/mml:semantics&gt;\u0000&lt;/mml:math&gt;\u0000&lt;/inline-formula&gt; is a &lt;inline-formula content-type=\"math/mathml\"&gt;\u0000&lt;mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" alttext=\"upper U upper F upper D\"&gt;\u0000 &lt;mml:semantics&gt;\u0000 &lt;mml:mi&gt;UFD&lt;/mml:mi&gt;\u0000 &lt;mml:annotation encoding=\"application/x-tex\"&gt;operatorname {UFD}&lt;/mml:annotation&gt;\u0000 &lt;/mml:semantics&gt;\u0000&lt;/mml:math&gt;\u0000&lt;/inline-formula&gt;, then &lt;inline-formula content-type=\"math/tex\"&gt;\u0000&lt;tex-math&gt;\u0000DlBrack XrBrack &lt;/tex-math&gt;&lt;/inline-formula&gt; is a GCD domain if and only if for any two integral &lt;inline-formula content-type=\"math/mathml\"&gt;\u0000&lt;mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" alttext=\"v\"&gt;\u0000 &lt;mml:semantics&gt;\u0000 &lt;mml:mi&gt;v&lt;/mml:mi&gt;\u0000 &lt;mml:annotation encoding=\"application/x-tex\"&gt;v&lt;/mml:annotation&gt;\u0000 &lt;/mml:semantics&gt;\u0000&lt;/mml:math&gt;\u0000&lt;/inline-formula&gt;-invertible &lt;inline-formula content-type=\"math/mathml\"&gt;\u0000&lt;mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" alttext=\"v\"&gt;\u0000 &lt;mml:semantics&gt;\u0000 &lt;mml:mi&gt;v&lt;/mml:mi&gt;\u0000 &lt;mml:annotation encoding=\"application/x-tex\"&gt;v&lt;/mml:annotation&gt;\u0000 &lt;/mml:semantics&gt;\u0000&lt;/mml:math&gt;\u0000&lt;/inline-formula&gt;-ideals &lt;inline-formula content-type=\"math/mathml\"&gt;\u0000&lt;mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" alttext=\"upper I\"&gt;\u0000 &lt;mml:semantics&gt;\u0000 &lt;mml:mi&gt;I&lt;/mml:mi&gt;\u0000 &lt;mml:annotation encoding=\"application/x-tex\"&gt;I&lt;/mml:annotation&gt;\u0000 &lt;/mml:semantics&gt;\u0000&lt;/mml:math&gt;\u0000&lt;/inline-formula&gt; and &lt;inline-formula content-type=\"math/mathml\"&gt;\u0000&lt;mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" alttext=\"upper J\"&gt;\u0000 &lt;mml:semantics&gt;\u0000 &lt;mml:mi&gt;J&lt;/mml:mi&gt;\u0000 &lt;mml:annotation encoding=\"application/x-tex\"&gt;J&lt;/mml:annotation&gt;\u0000 &lt;/mml:semantics&gt;\u0000&lt;/mml:math&gt;\u0000&lt;/inline-formula&gt; of &lt;inline-formula content-type=\"math/tex\"&gt;\u0000&lt;tex-math&gt;\u0000DlBrack XrBrack &lt;/tex-math&gt;&lt;/inline-formula&gt; such that &lt;inline-formula content-type=\"math/mathml\"&gt;\u0000&lt;mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\" alttext=\"left-parenthesis upper I upper J right-parenthesis Subscript 0 Baseline not-equals left-parenthesis 0 right-parenthesis comma\"&gt;\u0000 &lt;mml:semantics&gt;\u0000 &lt;mml:mrow&gt;\u0000 &lt;mml:mo stretchy=\"false\"&gt;(&lt;/mml:mo&gt;\u0000 &lt;mml:mi&gt;I&lt;/mml:mi&gt;\u0000 &lt;mml:mi&gt;J&lt;/mml:mi&gt;\u0000 &lt;mml:msub&gt;\u0000 &lt;mml:mo stretchy=\"false\"&gt;)&lt;/mml:mo&gt;\u0000 &lt;mml:mrow class=\"MJX-TeXAtom-ORD\"&gt;\u0000 &lt;mml:mn&gt;0&lt;/mml:mn&gt;\u0000 &lt;/mml:mrow&gt;\u0000 &lt;/mml:msub&gt;\u0000 &lt;mml:mo&gt;≠&lt;!-- ≠ --&gt;&lt;/mml:mo&gt;\u0000 &lt;mml:mo stretchy=\"false\"&gt;(&lt;","PeriodicalId":51162,"journal":{"name":"St Petersburg Mathematical Journal","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48505408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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St Petersburg Mathematical Journal
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