<p>Let <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11139_2024_1019_Article_IEq1.gif" Format="GIF" Height="20" Rendition="HTML" Resolution="72" Type="Linedraw" Width="41" /> </InlineMediaObject> <EquationSource Format="TEX">\(\lambda _f(n)\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msub> <mi>λ</mi> <mi>f</mi> </msub> <mrow> <mo stretchy="false">(</mo> <mi>n</mi> <mo stretchy="false">)</mo> </mrow> </mrow> </math></EquationSource> </InlineEquation> be the Fourier coefficients of a normalized Hecke eigenform <i>f</i> of weight <i>k</i> for the full modular group <InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11139_2024_1019_Article_IEq2.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="63" /> </InlineMediaObject> <EquationSource Format="TEX">\(SL(2, \mathbb {Z})\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>S</mi> <mi>L</mi> <mo stretchy="false">(</mo> <mn>2</mn> <mo>,</mo> <mi mathvariant="double-struck">Z</mi> <mo stretchy="false">)</mo> </mrow> </math></EquationSource> </InlineEquation>. For <InlineEquation ID="IEq3"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11139_2024_1019_Article_IEq3.gif" Format="GIF" Height="17" Rendition="HTML" Resolution="72" Type="Linedraw" Width="42" /> </InlineMediaObject> <EquationSource Format="TEX">\(j \ge 2\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>j</mi> <mo>≥</mo> <mn>2</mn> </mrow> </math></EquationSource> </InlineEquation>, let <InlineEquation ID="IEq4"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11139_2024_1019_Article_IEq4.gif" Format="GIF" Height="21" Rendition="HTML" Resolution="72" Type="Linedraw" Width="68" /> </InlineMediaObject> <EquationSource Format="TEX">\(\lambda _{sym^jf}(n)\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msub> <mi>λ</mi> <mrow> <mi>s</mi> <mi>y</mi> <msup> <mi>m</mi> <mi>j</mi> </msup> <mi>f</mi> </mrow> </msub> <mrow> <mo stretchy="false">(</mo> <mi>n</mi> <mo stretchy="false">)</mo> </mrow> </mrow> </math></EquationSource> </InlineEquation> be the coefficients of the Dirichlet series of the <i>j</i>th symmetric power <i>L</i>-function associated with <i>f</i>. Let <InlineEquation ID="IEq5"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11139_2024_1019_Article_IEq5.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="34" /> </InlineMediaObject> <EquationSource Format="TEX">\(\sigma (n)\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>σ</mi> <mo stretchy="false">(</mo> <mi>n</mi> <mo stretchy="false">)</mo> </mrow> </math></EquationSource> </InlineEquation> and <InlineEquation ID="IEq6"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11139_2024_1019_Article_IEq6.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="35" /> </InlineMediaObject> <EquationSource Format="TEX">\(\phi (n)\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>ϕ</mi> <mo stretchy="false">(</mo> <mi>n</mi> <mo stretchy="false">)</mo> </mrow> </math></EquationSource> </InlineEquation> be the sum of the divisors function and the Euler totient function, respectively. For given real numbers <i>b</i> and <i>c</i>, we prove asymptotic results for the higher power moments of <InlineEquation ID="IEq7"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11139_2024_1019_Article_IEq7.gif" Format="GIF" Height="25" Rendition="HTML" Resolution="72" Type="Linedraw" Width="117" /> </InlineMediaObject> <EquationSource Format="TEX">\(\lambda _f^j(n)\sigma ^b(n)\phi ^c(n)\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msubsup> <mi>λ</mi> <mi>f</mi> <mi>j</mi> </msubsup> <mrow> <mo stretchy="false">(</mo> <mi>n</mi> <mo stretchy="false">)</mo> </mrow> <msup> <mi>σ</mi> <mi>b</mi> </msup> <mrow> <mo stretchy="false">(</mo> <mi>n</mi> <mo stretchy="false">)</mo> </mrow> <msup> <mi>ϕ</mi> <mi>c</mi> </msup> <mrow> <mo stretchy="false">(</mo> <mi>n</mi> <mo stretchy="false">)</mo> </mrow> </mrow> </math></EquationSource> </InlineEquation> and for the second power moments of <InlineEquation ID="IEq8"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11139_2024_1019_Article_IEq8.gif" Format="GIF" Height="25" Rendition="HTML" Resolution="72" Type="Linedraw" Width="144" /> </InlineMediaObject> <EquationSource Format="TEX">\(\lambda ^2_{sym^jf}(n)\sigma ^b(n)\phi ^c(n)\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <msubsup> <mi>λ</mi> <mrow> <mi>s</mi> <mi>y</mi> <msup> <mi>m</mi> <mi>j</mi> </msup> <mi>f</mi> </mrow> <mn>2</mn> </msubsup> <mrow> <mo stretchy="false">(</mo> <mi>n</mi> <mo stretchy="false">)</mo> </mrow> <msup> <mi>σ</mi> <mi>b</mi> </msup> <mrow> <mo stretchy="false">(</mo> <mi>n</mi> <mo stretchy="false">)</mo> </mrow> <msup> <mi>ϕ</mi> <mi>c</mi> </msup> <mrow> <mo stretchy="false">(</mo> <mi>n</mi> <mo stretchy="false">)</mo> </mrow> </mrow> </math></EquationSource> </InlineEquation> over sequences of positive integers given by two distinct polynomials.</p>

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On the power moments of hybrid arithmetic functions associated with the Hecke eigenvalues

  • Prashant Tiwari,
  • Naveen K. Godara

摘要

Let \(\lambda _f(n)\) λ f ( n ) be the Fourier coefficients of a normalized Hecke eigenform f of weight k for the full modular group \(SL(2, \mathbb {Z})\) S L ( 2 , Z ) . For \(j \ge 2\) j 2 , let \(\lambda _{sym^jf}(n)\) λ s y m j f ( n ) be the coefficients of the Dirichlet series of the jth symmetric power L-function associated with f. Let \(\sigma (n)\) σ ( n ) and \(\phi (n)\) ϕ ( n ) be the sum of the divisors function and the Euler totient function, respectively. For given real numbers b and c, we prove asymptotic results for the higher power moments of \(\lambda _f^j(n)\sigma ^b(n)\phi ^c(n)\) λ f j ( n ) σ b ( n ) ϕ c ( n ) and for the second power moments of \(\lambda ^2_{sym^jf}(n)\sigma ^b(n)\phi ^c(n)\) λ s y m j f 2 ( n ) σ b ( n ) ϕ c ( n ) over sequences of positive integers given by two distinct polynomials.