Pub Date : 2024-07-18DOI: 10.1016/j.jnt.2024.06.009
We derive a local formula for the parity of the -Selmer rank of Jacobians of curves of genus 2 or 3 which admit an unramified double cover. We give an explicit example to show how this local formula gives rank parity predictions against which the 2-parity conjecture may be tested. Our results yield applications to the parity conjecture for semistable curves of genus 3.
{"title":"2∞-Selmer rank parities via the Prym construction","authors":"","doi":"10.1016/j.jnt.2024.06.009","DOIUrl":"10.1016/j.jnt.2024.06.009","url":null,"abstract":"<div><p>We derive a local formula for the parity of the <span><math><msup><mrow><mn>2</mn></mrow><mrow><mo>∞</mo></mrow></msup></math></span>-Selmer rank of Jacobians of curves of genus 2 or 3 which admit an unramified double cover. We give an explicit example to show how this local formula gives rank parity predictions against which the 2-parity conjecture may be tested. Our results yield applications to the parity conjecture for semistable curves of genus 3.</p></div>","PeriodicalId":50110,"journal":{"name":"Journal of Number Theory","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0022314X24001525/pdfft?md5=19533e2a3ab48597f61bd70dc3f8df28&pid=1-s2.0-S0022314X24001525-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-18DOI: 10.1016/j.jnt.2024.06.008
In this paper, we study properties of factorization in orders of a PID via the computation of algebraic invariants that measure the failure of unique factorization. The focus is on the numerical semigroup rings over a finite field and the orders of imaginary quadratic fields with class number 1. We also give a complete description of the class group structure of those rings.
{"title":"Class group and factorization in orders of a PID","authors":"","doi":"10.1016/j.jnt.2024.06.008","DOIUrl":"10.1016/j.jnt.2024.06.008","url":null,"abstract":"<div><p>In this paper, we study properties of factorization in orders of a PID via the computation of algebraic invariants that measure the failure of unique factorization. The focus is on the numerical semigroup rings over a finite field and the orders of imaginary quadratic fields with class number 1. We also give a complete description of the class group structure of those rings.</p></div>","PeriodicalId":50110,"journal":{"name":"Journal of Number Theory","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780789","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}
Pub Date : 2024-07-18DOI: 10.1016/j.jnt.2024.06.006
For a real-valued sequence , denote by the number of its first N fractional parts lying in a random interval of size , where as . We study the variance of (the number variance) for sequences of the form , where is a sequence of distinct integers. We show that if the additive energy of the sequence is bounded from above by for some , then for almost all α, the number variance is asymptotic to L (Poissonian number variance). This holds in particular for the sequence whenever with .
{"title":"On the number variance of sequences with small additive energy","authors":"","doi":"10.1016/j.jnt.2024.06.006","DOIUrl":"10.1016/j.jnt.2024.06.006","url":null,"abstract":"<div><p>For a real-valued sequence <span><math><msubsup><mrow><mo>(</mo><msub><mrow><mi>x</mi></mrow><mrow><mi>n</mi></mrow></msub><mo>)</mo></mrow><mrow><mi>n</mi><mo>=</mo><mn>1</mn></mrow><mrow><mo>∞</mo></mrow></msubsup></math></span>, denote by <span><math><msub><mrow><mi>S</mi></mrow><mrow><mi>N</mi></mrow></msub><mo>(</mo><mi>ℓ</mi><mo>)</mo></math></span> the number of its first <em>N</em> fractional parts lying in a random interval of size <span><math><mi>ℓ</mi><mo>:</mo><mo>=</mo><mi>L</mi><mo>/</mo><mi>N</mi></math></span>, where <span><math><mi>L</mi><mo>=</mo><mi>o</mi><mo>(</mo><mi>N</mi><mo>)</mo></math></span> as <span><math><mi>N</mi><mo>→</mo><mo>∞</mo></math></span>. We study the variance of <span><math><msub><mrow><mi>S</mi></mrow><mrow><mi>N</mi></mrow></msub><mo>(</mo><mi>ℓ</mi><mo>)</mo></math></span> (the number variance) for sequences of the form <span><math><msub><mrow><mi>x</mi></mrow><mrow><mi>n</mi></mrow></msub><mo>=</mo><mi>α</mi><msub><mrow><mi>a</mi></mrow><mrow><mi>n</mi></mrow></msub></math></span>, where <span><math><msubsup><mrow><mo>(</mo><msub><mrow><mi>a</mi></mrow><mrow><mi>n</mi></mrow></msub><mo>)</mo></mrow><mrow><mi>n</mi><mo>=</mo><mn>1</mn></mrow><mrow><mo>∞</mo></mrow></msubsup></math></span> is a sequence of distinct integers. We show that if the additive energy of the sequence <span><math><msubsup><mrow><mo>(</mo><msub><mrow><mi>a</mi></mrow><mrow><mi>n</mi></mrow></msub><mo>)</mo></mrow><mrow><mi>n</mi><mo>=</mo><mn>1</mn></mrow><mrow><mo>∞</mo></mrow></msubsup></math></span> is bounded from above by <span><math><msup><mrow><mi>N</mi></mrow><mrow><mn>3</mn><mo>−</mo><mi>ε</mi></mrow></msup><mo>/</mo><msup><mrow><mi>L</mi></mrow><mrow><mn>2</mn></mrow></msup></math></span> for some <span><math><mi>ε</mi><mo>></mo><mn>0</mn></math></span>, then for almost all <em>α</em>, the number variance is asymptotic to <em>L</em> (Poissonian number variance). This holds in particular for the sequence <span><math><msub><mrow><mi>x</mi></mrow><mrow><mi>n</mi></mrow></msub><mo>=</mo><mi>α</mi><msup><mrow><mi>n</mi></mrow><mrow><mi>d</mi></mrow></msup><mo>,</mo><mi>d</mi><mo>≥</mo><mn>2</mn></math></span> whenever <span><math><mi>L</mi><mo>=</mo><msup><mrow><mi>N</mi></mrow><mrow><mi>β</mi></mrow></msup></math></span> with <span><math><mn>0</mn><mo>≤</mo><mi>β</mi><mo><</mo><mn>1</mn><mo>/</mo><mn>2</mn></math></span>.</p></div>","PeriodicalId":50110,"journal":{"name":"Journal of Number Theory","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0022314X24001513/pdfft?md5=37404fefcd835f751277ba8aa774bc81&pid=1-s2.0-S0022314X24001513-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-18DOI: 10.1016/j.jnt.2024.06.003
In the spirit of the work of Hardy-Littlewood and Lavrik, we study the Dirichlet series associated to the generalized divisor function . We obtain an exact identity relating the Dirichlet series and a segment of the Euler product attached to it. Specifically, our main theorems are valid in the critical strip.
{"title":"A segment of Euler product associated to a certain Dirichlet series","authors":"","doi":"10.1016/j.jnt.2024.06.003","DOIUrl":"10.1016/j.jnt.2024.06.003","url":null,"abstract":"<div><p>In the spirit of the work of Hardy-Littlewood and Lavrik, we study the Dirichlet series associated to the generalized divisor function <span><math><msub><mrow><mi>σ</mi></mrow><mrow><mi>α</mi></mrow></msub><mo>(</mo><mi>n</mi><mo>)</mo><mo>:</mo><mo>=</mo><msub><mrow><mo>∑</mo></mrow><mrow><mi>d</mi><mo>|</mo><mi>n</mi></mrow></msub><msup><mrow><mi>d</mi></mrow><mrow><mi>α</mi></mrow></msup></math></span>. We obtain an exact identity relating the Dirichlet series <span><math><mi>ζ</mi><mo>(</mo><mi>s</mi><mo>)</mo><mi>ζ</mi><mo>(</mo><mi>s</mi><mo>−</mo><mi>α</mi><mo>)</mo></math></span> and a segment of the Euler product attached to it. Specifically, our main theorems are valid in the critical strip.</p></div>","PeriodicalId":50110,"journal":{"name":"Journal of Number Theory","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780787","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}
Pub Date : 2024-07-17DOI: 10.1016/j.jnt.2024.06.010
In this paper we prove that polynomials of degree , satisfying certain hypotheses, take on the expected density of -free values. This extends the authors' earlier result in [14] where a different method implied the similar statement for polynomials of degree .
{"title":"Density of power-free values of polynomials II","authors":"","doi":"10.1016/j.jnt.2024.06.010","DOIUrl":"10.1016/j.jnt.2024.06.010","url":null,"abstract":"<div><p>In this paper we prove that polynomials <span><math><mi>F</mi><mo>(</mo><msub><mrow><mi>x</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>,</mo><mo>⋯</mo><mo>,</mo><msub><mrow><mi>x</mi></mrow><mrow><mi>n</mi></mrow></msub><mo>)</mo><mo>∈</mo><mi>Z</mi><mo>[</mo><msub><mrow><mi>x</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>,</mo><mo>⋯</mo><mo>,</mo><msub><mrow><mi>x</mi></mrow><mrow><mi>n</mi></mrow></msub><mo>]</mo></math></span> of degree <span><math><mi>d</mi><mo>≥</mo><mn>3</mn></math></span>, satisfying certain hypotheses, take on the expected density of <span><math><mo>(</mo><mi>d</mi><mo>−</mo><mn>1</mn><mo>)</mo></math></span>-free values. This extends the authors' earlier result in <span><span>[14]</span></span> where a different method implied the similar statement for polynomials of degree <span><math><mi>d</mi><mo>≥</mo><mn>5</mn></math></span>.</p></div>","PeriodicalId":50110,"journal":{"name":"Journal of Number Theory","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0022314X24001550/pdfft?md5=5679964f477441d43dd0509c9504b52e&pid=1-s2.0-S0022314X24001550-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-17DOI: 10.1016/j.jnt.2024.06.005
Working over a base number field K, we study the attractive question of Zariski non-density for -integral points in the forward f-orbit of a rational point . Here, is a regular surjective self-map for X a geometrically irreducible projective variety over K. Given a non-zero and effective f-quasi-polarizable Cartier divisor D on X and defined over K, our main result gives a sufficient condition, that is formulated in terms of the f-dynamics of D, for non-Zariski density of certain dynamically defined subsets of . For the case of -integral points, this result gives a sufficient condition for non-Zariski density of integral points in . Our approach expands on that of Yasufuku, [13], building on earlier work of Silverman [11]. Our main result gives an unconditional form of the main results of [13]; the key arithmetic input to our main theorem is the Subspace Theorem of Schmidt in the generalized form that has been given by Ru and Vojta in [10] and expanded upon in [3] and [6].
{"title":"On non-Zariski density of (D,S)-integral points in forward orbits and the Subspace Theorem","authors":"","doi":"10.1016/j.jnt.2024.06.005","DOIUrl":"10.1016/j.jnt.2024.06.005","url":null,"abstract":"<div><p>Working over a base number field <strong>K</strong>, we study the attractive question of Zariski non-density for <span><math><mo>(</mo><mi>D</mi><mo>,</mo><mi>S</mi><mo>)</mo></math></span>-integral points in <span><math><msub><mrow><mi>O</mi></mrow><mrow><mi>f</mi></mrow></msub><mo>(</mo><mi>x</mi><mo>)</mo></math></span> the forward <em>f</em>-orbit of a rational point <span><math><mi>x</mi><mo>∈</mo><mi>X</mi><mo>(</mo><mi>K</mi><mo>)</mo></math></span>. Here, <span><math><mi>f</mi><mo>:</mo><mi>X</mi><mo>→</mo><mi>X</mi></math></span> is a regular surjective self-map for <em>X</em> a geometrically irreducible projective variety over <strong>K</strong>. Given a non-zero and effective <em>f</em>-quasi-polarizable Cartier divisor <em>D</em> on <em>X</em> and defined over <strong>K</strong>, our main result gives a sufficient condition, that is formulated in terms of the <em>f</em>-dynamics of <em>D</em>, for non-Zariski density of certain dynamically defined subsets of <span><math><msub><mrow><mi>O</mi></mrow><mrow><mi>f</mi></mrow></msub><mo>(</mo><mi>x</mi><mo>)</mo></math></span>. For the case of <span><math><mo>(</mo><mi>D</mi><mo>,</mo><mi>S</mi><mo>)</mo></math></span>-integral points, this result gives a sufficient condition for non-Zariski density of integral points in <span><math><msub><mrow><mi>O</mi></mrow><mrow><mi>f</mi></mrow></msub><mo>(</mo><mi>x</mi><mo>)</mo></math></span>. Our approach expands on that of Yasufuku, <span><span>[13]</span></span>, building on earlier work of Silverman <span><span>[11]</span></span>. Our main result gives an unconditional form of the main results of <span><span>[13]</span></span>; the key arithmetic input to our main theorem is the Subspace Theorem of Schmidt in the generalized form that has been given by Ru and Vojta in <span><span>[10]</span></span> and expanded upon in <span><span>[3]</span></span> and <span><span>[6]</span></span>.</p></div>","PeriodicalId":50110,"journal":{"name":"Journal of Number Theory","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0022314X24001495/pdfft?md5=b3dd7c5b16ab793f55d50824e16a3394&pid=1-s2.0-S0022314X24001495-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141785716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-17DOI: 10.1016/j.jnt.2024.06.011
In this paper, we study the asymptotic distribution of coefficients of general L-functions over arithmetic progressions without the Ramanujan conjecture. As an application, we consider the high mean of Fourier coefficients of holomorphic forms or Maass forms for over arithmetic progressions, and improve the results of Jiang and Lü [10]. Our new results remove the restriction to prime module and improve the interval length of module q.
在本文中,我们在没有拉马努扬猜想的情况下研究了算术级数上一般-函数系数的渐近分布。作为应用,我们考虑了全形形式或马斯形式在算术级数上的傅里叶系数的高均值,并改进了蒋和吕(Jiang and Lü)的结果。我们的新结果消除了对素数模块的限制,改善了模块的区间长度。
{"title":"Sums of coefficients of general L-functions over arithmetic progressions and applications","authors":"","doi":"10.1016/j.jnt.2024.06.011","DOIUrl":"10.1016/j.jnt.2024.06.011","url":null,"abstract":"<div><p>In this paper, we study the asymptotic distribution of coefficients of general <em>L</em>-functions over arithmetic progressions without the Ramanujan conjecture. As an application, we consider the high mean of Fourier coefficients of holomorphic forms or Maass forms for <span><math><mi>Γ</mi><mo>=</mo><mrow><mi>SL</mi></mrow><mo>(</mo><mn>2</mn><mo>,</mo><mi>Z</mi><mo>)</mo></math></span> over arithmetic progressions, and improve the results of Jiang and Lü <span><span>[10]</span></span>. Our new results remove the restriction to prime module and improve the interval length of module <em>q</em>.</p></div>","PeriodicalId":50110,"journal":{"name":"Journal of Number Theory","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780784","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}
Pub Date : 2024-07-17DOI: 10.1016/j.jnt.2024.06.007
We give asymptotics for shifted convolutions of the form for nonzero complex numbers and nontrivial Dirichlet characters . We use the technique of automorphic regularization to find the spectral decomposition of a combination of Eisenstein series which is not obviously square-integrable. The error term we obtain is in some cases smaller than what the method we use typically yields.
{"title":"A twisted additive divisor problem","authors":"","doi":"10.1016/j.jnt.2024.06.007","DOIUrl":"10.1016/j.jnt.2024.06.007","url":null,"abstract":"<div><p>We give asymptotics for shifted convolutions of the form<span><span><span><math><munder><mo>∑</mo><mrow><mi>n</mi><mo><</mo><mi>X</mi></mrow></munder><mfrac><mrow><msub><mrow><mi>σ</mi></mrow><mrow><mn>2</mn><mi>u</mi></mrow></msub><mo>(</mo><mi>n</mi><mo>,</mo><mi>χ</mi><mo>)</mo><msub><mrow><mi>σ</mi></mrow><mrow><mn>2</mn><mi>v</mi></mrow></msub><mo>(</mo><mi>n</mi><mo>+</mo><mi>k</mi><mo>,</mo><mi>ψ</mi><mo>)</mo></mrow><mrow><msup><mrow><mi>n</mi></mrow><mrow><mi>u</mi><mo>+</mo><mi>v</mi></mrow></msup></mrow></mfrac></math></span></span></span> for nonzero complex numbers <span><math><mi>u</mi><mo>,</mo><mi>v</mi></math></span> and nontrivial Dirichlet characters <span><math><mi>χ</mi><mo>,</mo><mi>ψ</mi></math></span>. We use the technique of <em>automorphic regularization</em> to find the spectral decomposition of a combination of Eisenstein series which is not obviously square-integrable. The error term we obtain is in some cases smaller than what the method we use typically yields.</p></div>","PeriodicalId":50110,"journal":{"name":"Journal of Number Theory","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0022314X24001586/pdfft?md5=03e4c4b87cd43372c6c4156f7d76d43a&pid=1-s2.0-S0022314X24001586-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-17DOI: 10.1016/j.jnt.2024.06.012
For all with , we show that the number of pairs of positive integers with is equal to as , where Γ denotes the gamma function. Moreover, we show a non-asymptotic result for the same counting problem when lie in a larger range than the above. Finally, we give some asymptotic formulas for similar counting problems in a heuristic way.
{"title":"Asymptotic and non-asymptotic results for a binary additive problem involving Piatetski-Shapiro numbers","authors":"","doi":"10.1016/j.jnt.2024.06.012","DOIUrl":"10.1016/j.jnt.2024.06.012","url":null,"abstract":"<div><p>For all <span><math><msub><mrow><mi>α</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>,</mo><msub><mrow><mi>α</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>∈</mo><mo>(</mo><mn>1</mn><mo>,</mo><mn>2</mn><mo>)</mo></math></span> with <span><math><mn>1</mn><mo>/</mo><msub><mrow><mi>α</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>+</mo><mn>1</mn><mo>/</mo><msub><mrow><mi>α</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>></mo><mn>5</mn><mo>/</mo><mn>3</mn></math></span>, we show that the number of pairs <span><math><mo>(</mo><msub><mrow><mi>n</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>,</mo><msub><mrow><mi>n</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>)</mo></math></span> of positive integers with <span><math><mi>N</mi><mo>=</mo><mo>⌊</mo><msubsup><mrow><mi>n</mi></mrow><mrow><mn>1</mn></mrow><mrow><msub><mrow><mi>α</mi></mrow><mrow><mn>1</mn></mrow></msub></mrow></msubsup><mo>⌋</mo><mo>+</mo><mo>⌊</mo><msubsup><mrow><mi>n</mi></mrow><mrow><mn>2</mn></mrow><mrow><msub><mrow><mi>α</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></msubsup><mo>⌋</mo></math></span> is equal to <span><math><mi>Γ</mi><mo>(</mo><mn>1</mn><mo>+</mo><mn>1</mn><mo>/</mo><msub><mrow><mi>α</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>)</mo><mi>Γ</mi><mo>(</mo><mn>1</mn><mo>+</mo><mn>1</mn><mo>/</mo><msub><mrow><mi>α</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>)</mo><mi>Γ</mi><msup><mrow><mo>(</mo><mn>1</mn><mo>/</mo><msub><mrow><mi>α</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>+</mo><mn>1</mn><mo>/</mo><msub><mrow><mi>α</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>)</mo></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup><msup><mrow><mi>N</mi></mrow><mrow><mn>1</mn><mo>/</mo><msub><mrow><mi>α</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>+</mo><mn>1</mn><mo>/</mo><msub><mrow><mi>α</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>−</mo><mn>1</mn></mrow></msup><mo>+</mo><mi>o</mi><mo>(</mo><msup><mrow><mi>N</mi></mrow><mrow><mn>1</mn><mo>/</mo><msub><mrow><mi>α</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>+</mo><mn>1</mn><mo>/</mo><msub><mrow><mi>α</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>−</mo><mn>1</mn></mrow></msup><mo>)</mo></math></span> as <span><math><mi>N</mi><mo>→</mo><mo>∞</mo></math></span>, where Γ denotes the gamma function. Moreover, we show a non-asymptotic result for the same counting problem when <span><math><msub><mrow><mi>α</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>,</mo><msub><mrow><mi>α</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>∈</mo><mo>(</mo><mn>1</mn><mo>,</mo><mn>2</mn><mo>)</mo></math></span> lie in a larger range than the above. Finally, we give some asymptotic formulas for similar counting problems in a heuristic way.</p></div>","PeriodicalId":50110,"journal":{"name":"Journal of Number Theory","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0022314X24001562/pdfft?md5=f340a4f5d9777bfe3886facce83ff86f&pid=1-s2.0-S0022314X24001562-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-17DOI: 10.1016/j.jnt.2024.06.002
In this paper, we show the nonvanishing of some Hecke characters on cyclotomic fields. The main ingredient of this paper is a computation of eigenfunctions and the action of Weil representation at some primes including the primes above 2. As an application, we show that for each isogeny factor of the Jacobian of the p-th Fermat curve where 2 is a quadratic residue modulo p, there are infinitely many twists whose analytic rank is zero. Also, for a certain hyperelliptic curve over the 11-th cyclotomic field whose Jacobian has complex multiplication, there are infinitely many twists whose analytic rank is zero.
在这篇论文中,我们展示了循环域上一些赫克特征的非消失性。本文的主要内容是计算一些素数(包括 2 以上的素数)的特征函数和 Weil 表示的作用。作为应用,我们证明了对于第-次费马曲线的雅各布因子的每个等元因子,其中 2 是二次残差模,有无穷多个捻的解析秩为零。另外,对于第 11 个旋回域上的某条超椭圆曲线,其雅各布因子具有复乘法,则有无穷多个阶数为零的捻。
{"title":"Nonvanishing of L-function of some Hecke characters on cyclotomic fields","authors":"","doi":"10.1016/j.jnt.2024.06.002","DOIUrl":"10.1016/j.jnt.2024.06.002","url":null,"abstract":"<div><p>In this paper, we show the nonvanishing of some Hecke characters on cyclotomic fields. The main ingredient of this paper is a computation of eigenfunctions and the action of Weil representation at some primes including the primes above 2. As an application, we show that for each isogeny factor of the Jacobian of the <em>p</em>-th Fermat curve where 2 is a quadratic residue modulo <em>p</em>, there are infinitely many twists whose analytic rank is zero. Also, for a certain hyperelliptic curve over the 11-th cyclotomic field whose Jacobian has complex multiplication, there are infinitely many twists whose analytic rank is zero.</p></div>","PeriodicalId":50110,"journal":{"name":"Journal of Number Theory","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780788","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}