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A note on the Irrationality of $ζ(5)$ and Higher Odd Zeta Values 关于$ζ(5)$及更高奇数Zeta值非理性的说明
arXiv - MATH - General Mathematics Pub Date : 2024-07-08 DOI: arxiv-2407.07121
Shekhar Suman
{"title":"A note on the Irrationality of $ζ(5)$ and Higher Odd Zeta Values","authors":"Shekhar Suman","doi":"arxiv-2407.07121","DOIUrl":"https://doi.org/arxiv-2407.07121","url":null,"abstract":"For $ninmathbb{N}$ we define a double integral begin{equation*}\u0000I_n=frac{1}{24}int_0^1int_0^1 frac{-log^3(xy)}{1+xy} (xy(1-xy))^n \u0000dxdyend{equation*} We denote $d_n=text{lcm}(1,2,...,n)$ and prove that for\u0000all $ninmathbb{N}$, begin{equation*} d_n I_n= 15 (-1)^n 2^{n-4} d_n\u0000zeta(5)+(-1)^{n+1} d_n sum_{r=0}^{n} binom{n}{r}left(sum_{k=1}^{n+r}\u0000frac{(-1)^{k-1}}{k^5}right) end{equation*} Now if $zeta(5)$ is rational,\u0000then $zeta(5)=a/b$, $(a,b)=1$ and $a,binmathbb{N}$. Then we take $ngeq b$\u0000so that $b|d_n$. We show that for all $ngeq 1$, $0<d_n I_n<1$. We denote\u0000begin{equation*} S_n=d_n sum_{r=0}^{n} binom{n}{r}left(sum_{k=1}^{n+r}\u0000frac{(-1)^{k-1}}{k^5}right) end{equation*} We prove for all $ngeq b$,\u0000begin{equation*} d_n I_n+(-1)^{n}\u0000left{S_nright}inmathbb{Z}end{equation*} where ${x}=x-[x]$ denotes the\u0000fractional part of $x$ and $[x]$ denotes the greatest integer less than or\u0000equal to $x$. Later we show that the only integer value admissible is\u0000begin{equation*} d_n I_n+(-1)^{n} left{S_nright}=0 text{or} d_n\u0000I_n+(-1)^{n} left{S_nright}=1end{equation*} Finally we prove that these\u0000above values are not possible. This gives a contradiction to our assumption\u0000that $zeta(5)$ is rational. Similarly for all $mgeq 3$ and $ngeq 1$, by\u0000defining begin{equation*} I_{n,m}=frac{1}{Gamma(2m+1)}int_0^1int_0^1\u0000frac{-log^{2m-1}(xy)}{1+xy} (xy(1-xy))^n dxdyend{equation*} where\u0000$Gamma(s)$ denotes the Gamma function, we give an extension of the above proof\u0000to prove the irrationality of higher odd zeta values $zeta(2m+1)$ for all\u0000$mgeq 3$","PeriodicalId":501502,"journal":{"name":"arXiv - MATH - General Mathematics","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141584702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Describing chaotic systems 描述混沌系统
arXiv - MATH - General Mathematics Pub Date : 2024-07-07 DOI: arxiv-2407.07919
Brandon Le
{"title":"Describing chaotic systems","authors":"Brandon Le","doi":"arxiv-2407.07919","DOIUrl":"https://doi.org/arxiv-2407.07919","url":null,"abstract":"In this paper, we discuss the Lyapunov exponent definition of chaos and how\u0000it can be used to quantify the chaotic behavior of a system. We derive a way to\u0000practically calculate the Lyapunov exponent of a one-dimensional system and use\u0000it to analyze chaotic behavior of the logistic map, comparing the $r$-varying\u0000Lyapunov exponent to the map's bifurcation diagram. Then, we generalize the\u0000idea of the Lyapunov exponent to an $n$-dimensional system and explore the\u0000mathematical background behind the analytic calculation of the Lyapunov\u0000spectrum. We also outline a method to numerically calculate the maximal\u0000Lyapunov exponent using the periodic renormalization of a perturbation vector\u0000and a method to numerically calculate the entire Lyapunov spectrum using QR\u0000factorization. Finally, we apply both these methods to calculate the Lyapunov\u0000exponents of the H'enon map, a multi-dimensional chaotic system.","PeriodicalId":501502,"journal":{"name":"arXiv - MATH - General Mathematics","volume":"226 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141611884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An approach to Borwein integrals from the point of view of residue theory 从残差理论的角度研究博文积分的方法
arXiv - MATH - General Mathematics Pub Date : 2024-07-07 DOI: arxiv-2407.15856
Daniel Cao Labora, Gonzalo Cao Labora
{"title":"An approach to Borwein integrals from the point of view of residue theory","authors":"Daniel Cao Labora, Gonzalo Cao Labora","doi":"arxiv-2407.15856","DOIUrl":"https://doi.org/arxiv-2407.15856","url":null,"abstract":"Borwein integrals are one of the most popularly known phenomena in\u0000contemporary mathematics. They were found in 2001 by David Borwein and Jonathan\u0000Borwein and consist of a simple family of integrals involving the cardinal sine\u0000function ``sinc'', so that the first integrals are equal to $pi$ until,\u0000suddenly, that pattern breaks. The classical explanation for this fact involves\u0000Fourier Analysis techniques. In this paper, we show that it is possible to\u0000derive an explanation for this result by means of undergraduate Complex\u0000Analysis tools; namely, residue theory. Besides, we show that this Complex\u0000Analysis scope allows to go a beyond the classical result when studying these\u0000kind of integrals. Concretely, we show a new generalization for the classical\u0000Borwein result.","PeriodicalId":501502,"journal":{"name":"arXiv - MATH - General Mathematics","volume":"80 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141771304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Generalization of Cantor Pairing Polynomials (Bijective Mapping Among Natural Numbers) from N02 to N0 to Z2 to N0 and N03 to N 从 N02 到 N0 到 Z2 到 N0 和 N03 到 N 的康托配对多项式(自然数之间的双射映射)的广义化
arXiv - MATH - General Mathematics Pub Date : 2024-07-06 DOI: arxiv-2407.05073
Sandor Kristyan
{"title":"Generalization of Cantor Pairing Polynomials (Bijective Mapping Among Natural Numbers) from N02 to N0 to Z2 to N0 and N03 to N","authors":"Sandor Kristyan","doi":"arxiv-2407.05073","DOIUrl":"https://doi.org/arxiv-2407.05073","url":null,"abstract":"The Cantor pairing polynomials are extended to larger 2D sub-domains and more\u0000complex mapping, of which the most important property is the bijectivity. If\u0000corners are involved inside (but not the borders of) domain, more than one\u0000connected polynomials are necessary. More complex patterns need more complex\u0000subsequent application of math series to obtain the mapping polynomials which\u0000are more and more inconvenient, although elementary. A tricky polynomial fit is\u0000introduced (six coefficients are involved like in the original Cantor\u0000polynomials with rigorous but simple restrictions on points chosen) to buy out\u0000the regular treatment of math series to find the pairing polynomials instantly.\u0000The original bijective Cantor polynomial C1(x,y)= (x2+2xy+y2+3x+y)/2: N02 to N0\u0000(=positive integers) which is 2-fold and runs in zig - zag way along lines\u0000x+y=N is extended e.g. to the bijective P(x,y)=\u00002x2+4sgn(x)sgn(y)xy+2y2-2H(x)sgn(y)x-y+1: Z2 to N0 (with sign and Heaviside\u0000functions, Z is integers) running in spiral way along concentric rhombuses, or\u0000to the bijective P3D(x,y,z)= [x3+y3+z3 +3(xz2+yz2 +zx2+2xyz +zy2+yx2+xy2)\u0000+3(2x2+2y2 +z2+2xz +2yz+4xy) +5x+11y+2z]/6: N03 to N0 which is 6-fold and runs\u0000along plains x+y+z=N. Storage device for triangle matrices is also commented as\u0000cutting the original Cantor domain to half along with related Diophantine\u0000equations.","PeriodicalId":501502,"journal":{"name":"arXiv - MATH - General Mathematics","volume":"78 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 Simple Divisibility Restrictions by Polynomial Equation a n+bn=cn Itself in Fermat Last Theorem for Integer/Complex/Quaternion Triples 论整数/复数/四元数三元组费马最后定理中的多项式方程 a n+bn=cn 本身的简单可分性限制
arXiv - MATH - General Mathematics Pub Date : 2024-07-06 DOI: arxiv-2407.05068
Sandor Kristyan
{"title":"On the Simple Divisibility Restrictions by Polynomial Equation a n+bn=cn Itself in Fermat Last Theorem for Integer/Complex/Quaternion Triples","authors":"Sandor Kristyan","doi":"arxiv-2407.05068","DOIUrl":"https://doi.org/arxiv-2407.05068","url":null,"abstract":"The divisibility restrictions in the famous equation a n+bn=cn in Fermat Last\u0000Theorem (FLT, 1637) is analyzed how it selects out many triples to be Fermat\u0000triple (i.e. solutions) if n greater than 2, decreasing the cardinality of\u0000Fermat triples. In our analysis, the restriction on positive integer (PI)\u0000solutions ((a,b,c,n) up to the point when there is no more) is not along with\u0000restriction on power n in PI as decreasing sets {PI } containing {odd}\u0000containing {primes} containing {regular primes}, etc. as in the literature, but\u0000with respect to exclusion of more and more c in PI as increasing sets {primes\u0000p} in {p k} in {PI}. The divisibility and co-prime property in Fermat equation\u0000is analyzed in relation to exclusion of solutions, and the effect of\u0000simultaneous values of gcd(a,b,c), gcd(a+b,cn), gcd(c-a,bn) and gcd(c-b,an) on\u0000the decrease of cardinality of solutions is exhibited. Again, our derivation\u0000focuses mainly on the variable c rather than on variable n, oppositely to the\u0000literature in which the FLT is historically separated via the values of power\u0000n. Among the most famous are the known, about 2500 years old, existing\u0000Pythagorean triples (a,b,c,n=2) and the first milestones as the proved cases\u0000(of non-existence as n=3 by Gauss and later by Euler (1753) and n=4 by Fermat)\u0000less than 400 years ago. As it is known, Wiles has proved the FLT in 1995 in an\u0000abstract roundabout way. The n<0, n:=1/m, as well as complex and quaternion\u0000(a,b,c) cases focusing on Pythagoreans are commented. Odd powers FLT over\u0000quaternions breaks.","PeriodicalId":501502,"journal":{"name":"arXiv - MATH - General Mathematics","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Graph Linear Canonical Transform: Definition, Vertex-Frequency Analysis and Filter Design 图线性典型变换:定义、顶点频率分析和滤波器设计
arXiv - MATH - General Mathematics Pub Date : 2024-07-02 DOI: arxiv-2407.12046
Jian Yi Chen, Bing Zhao Li
{"title":"Graph Linear Canonical Transform: Definition, Vertex-Frequency Analysis and Filter Design","authors":"Jian Yi Chen, Bing Zhao Li","doi":"arxiv-2407.12046","DOIUrl":"https://doi.org/arxiv-2407.12046","url":null,"abstract":"This paper proposes a graph linear canonical transform (GLCT) by decomposing\u0000the linear canonical parameter matrix into fractional Fourier transform, scale\u0000transform, and chirp modulation for graph signal processing. The GLCT enables\u0000adjustable smoothing modes, enhancing alignment with graph signals. Leveraging\u0000traditional fractional domain time-frequency analysis, we investigate\u0000vertex-frequency analysis in the graph linear canonical domain, aiming to\u0000overcome limitations in capturing local information. Filter design methods,\u0000including optimal design and learning with stochastic gradient descent, are\u0000analyzed and applied to image classification tasks. The proposed GLCT and\u0000vertex-frequency analysis present innovative approaches to signal processing\u0000challenges, with potential applications in various fields.","PeriodicalId":501502,"journal":{"name":"arXiv - MATH - General Mathematics","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141745228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
About zero counting of Riemann Z function 关于黎曼 Z 函数的零点计数
arXiv - MATH - General Mathematics Pub Date : 2024-07-02 DOI: arxiv-2407.07910
Giovanni Lodone
{"title":"About zero counting of Riemann Z function","authors":"Giovanni Lodone","doi":"arxiv-2407.07910","DOIUrl":"https://doi.org/arxiv-2407.07910","url":null,"abstract":"An approximate formula for complex Riemann Xi function, previously developed,\u0000is used to refine Backlund's estimate of the number of zeros till a chosen\u0000imaginary coordinate","PeriodicalId":501502,"journal":{"name":"arXiv - MATH - General Mathematics","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141611886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Baker's dozen digits of two sums involving reciprocal products of an integer and its greatest prime factor 涉及整数及其最大质因数互积的两个和的贝克十几位数
arXiv - MATH - General Mathematics Pub Date : 2024-07-02 DOI: arxiv-2407.12047
Tengiz O. Gogoberidze
{"title":"Baker's dozen digits of two sums involving reciprocal products of an integer and its greatest prime factor","authors":"Tengiz O. Gogoberidze","doi":"arxiv-2407.12047","DOIUrl":"https://doi.org/arxiv-2407.12047","url":null,"abstract":"Two sums over the inverse of the product of an integer n and its greatest\u0000prime factor G(n), are computed to first 13 decimal digits. These sums\u0000converge, but converge very slowly. They are transformed into sums involving\u0000Mertens' prime product with the remainder term which are estimated by means of\u0000Chebyshev's {theta}-function.","PeriodicalId":501502,"journal":{"name":"arXiv - MATH - General Mathematics","volume":"64 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141745230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Variance of the distance to the boundary of convex domains in $mathbb{R}^{2}$ and $mathbb{R}^{3}$ $mathbb{R}^{2}$和$mathbb{R}^{3}$中凸域边界距离的方差
arXiv - MATH - General Mathematics Pub Date : 2024-07-01 DOI: arxiv-2407.12041
Alastair N. Fletcher, Alexander G. Fletcher
{"title":"Variance of the distance to the boundary of convex domains in $mathbb{R}^{2}$ and $mathbb{R}^{3}$","authors":"Alastair N. Fletcher, Alexander G. Fletcher","doi":"arxiv-2407.12041","DOIUrl":"https://doi.org/arxiv-2407.12041","url":null,"abstract":"In this paper, we give for the first time a systematic study of the variance\u0000of the distance to the boundary for arbitrary bounded convex domains in\u0000$mathbb{R}^2$ and $mathbb{R}^3$. In dimension two, we show that this function\u0000is strictly convex, which leads to a new notion of the centre of such a domain,\u0000called the variocentre. In dimension three, we investigate the relationship\u0000between the variance and the distance to the boundary, which mathematically\u0000justifies claims made for a recently developed algorithm for classifying\u0000interior and exterior points with applications in biology.","PeriodicalId":501502,"journal":{"name":"arXiv - MATH - General Mathematics","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141745229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On Bounds and Diophantine Properties of Elliptic Curves 论椭圆曲线的边界和 Diophantine 特性
arXiv - MATH - General Mathematics Pub Date : 2024-06-30 DOI: arxiv-2407.09558
Navvye Anand
{"title":"On Bounds and Diophantine Properties of Elliptic Curves","authors":"Navvye Anand","doi":"arxiv-2407.09558","DOIUrl":"https://doi.org/arxiv-2407.09558","url":null,"abstract":"Mordell equations are celebrated equations within number theory and are named\u0000after Louis Mordell, an American-born British mathematician, known for his\u0000pioneering research in number theory. In this paper, we discover all Mordell\u0000equations of the form $y^2 = x^3 + k$, where $k in mathbb Z$, with exactly\u0000$|k|$ integral solutions. We also discover explicit bounds for Mordell\u0000equations, parameterized families of elliptic curves and twists on elliptic\u0000curves. Using the connection between Mordell curves and binary cubic forms, we\u0000improve the lower bound for the number of integral solutions of a Mordell curve\u0000by looking at a pair of curves with unusually high rank.","PeriodicalId":501502,"journal":{"name":"arXiv - MATH - General Mathematics","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141722102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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