Subjects -> MATHEMATICS (Total: 1013 journals)
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MATHEMATICS (714 journals)            First | 1 2 3 4     

Showing 601 - 538 of 538 Journals sorted alphabetically
Results in Control and Optimization     Open Access  
Results in Mathematics     Hybrid Journal  
Results in Nonlinear Analysis     Open Access  
Review of Symbolic Logic     Full-text available via subscription   (Followers: 2)
Reviews in Mathematical Physics     Hybrid Journal   (Followers: 1)
Revista Baiana de Educação Matemática     Open Access  
Revista Bases de la Ciencia     Open Access  
Revista BoEM - Boletim online de Educação Matemática     Open Access  
Revista Colombiana de Matemáticas     Open Access   (Followers: 1)
Revista de Ciencias     Open Access  
Revista de Educación Matemática     Open Access  
Revista de la Escuela de Perfeccionamiento en Investigación Operativa     Open Access  
Revista de la Real Academia de Ciencias Exactas, Fisicas y Naturales. Serie A. Matematicas     Partially Free  
Revista de Matemática : Teoría y Aplicaciones     Open Access   (Followers: 1)
Revista Digital: Matemática, Educación e Internet     Open Access  
Revista Electrónica de Conocimientos, Saberes y Prácticas     Open Access  
Revista Integración : Temas de Matemáticas     Open Access  
Revista Internacional de Sistemas     Open Access  
Revista Latinoamericana de Etnomatemática     Open Access  
Revista Latinoamericana de Investigación en Matemática Educativa     Open Access  
Revista Matemática Complutense     Hybrid Journal  
Revista REAMEC : Rede Amazônica de Educação em Ciências e Matemática     Open Access  
Revista SIGMA     Open Access  
Ricerche di Matematica     Hybrid Journal  
RMS : Research in Mathematics & Statistics     Open Access  
Royal Society Open Science     Open Access   (Followers: 7)
Russian Journal of Mathematical Physics     Full-text available via subscription  
Russian Mathematics     Hybrid Journal  
Sahand Communications in Mathematical Analysis     Open Access  
Sampling Theory, Signal Processing, and Data Analysis     Hybrid Journal  
São Paulo Journal of Mathematical Sciences     Hybrid Journal  
Science China Mathematics     Hybrid Journal   (Followers: 1)
Science Progress     Full-text available via subscription   (Followers: 1)
Sciences & Technologie A : sciences exactes     Open Access  
Selecta Mathematica     Hybrid Journal   (Followers: 1)
SeMA Journal     Hybrid Journal  
Semigroup Forum     Hybrid Journal   (Followers: 1)
Set-Valued and Variational Analysis     Hybrid Journal  
SIAM Journal on Applied Mathematics     Hybrid Journal   (Followers: 11)
SIAM Journal on Computing     Hybrid Journal   (Followers: 11)
SIAM Journal on Control and Optimization     Hybrid Journal   (Followers: 18)
SIAM Journal on Discrete Mathematics     Hybrid Journal   (Followers: 8)
SIAM Journal on Financial Mathematics     Hybrid Journal   (Followers: 3)
SIAM Journal on Mathematics of Data Science     Hybrid Journal   (Followers: 1)
SIAM Journal on Matrix Analysis and Applications     Hybrid Journal   (Followers: 3)
SIAM Journal on Optimization     Hybrid Journal   (Followers: 12)
Siberian Advances in Mathematics     Hybrid Journal  
Siberian Mathematical Journal     Hybrid Journal  
Sigmae     Open Access  
SILICON     Hybrid Journal  
SN Partial Differential Equations and Applications     Hybrid Journal  
Soft Computing     Hybrid Journal   (Followers: 7)
Statistics and Computing     Hybrid Journal   (Followers: 14)
Stochastic Analysis and Applications     Hybrid Journal   (Followers: 3)
Stochastic Partial Differential Equations : Analysis and Computations     Hybrid Journal   (Followers: 2)
Stochastic Processes and their Applications     Hybrid Journal   (Followers: 6)
Stochastics and Dynamics     Hybrid Journal   (Followers: 2)
Studia Scientiarum Mathematicarum Hungarica     Full-text available via subscription   (Followers: 1)
Studia Universitatis Babeș-Bolyai Informatica     Open Access  
Studies In Applied Mathematics     Hybrid Journal   (Followers: 1)
Studies in Mathematical Sciences     Open Access   (Followers: 1)
Superficies y vacio     Open Access  
Suska Journal of Mathematics Education     Open Access   (Followers: 1)
Swiss Journal of Geosciences     Hybrid Journal   (Followers: 1)
Synthesis Lectures on Algorithms and Software in Engineering     Full-text available via subscription   (Followers: 2)
Synthesis Lectures on Mathematics and Statistics     Full-text available via subscription   (Followers: 1)
Tamkang Journal of Mathematics     Open Access  
Tatra Mountains Mathematical Publications     Open Access  
Teaching Mathematics     Full-text available via subscription   (Followers: 10)
Teaching Mathematics and its Applications: An International Journal of the IMA     Hybrid Journal   (Followers: 4)
Teaching Statistics     Hybrid Journal   (Followers: 8)
Technometrics     Full-text available via subscription   (Followers: 8)
The Journal of Supercomputing     Hybrid Journal   (Followers: 1)
The Mathematica journal     Open Access  
The Mathematical Gazette     Full-text available via subscription   (Followers: 1)
The Mathematical Intelligencer     Hybrid Journal  
The Ramanujan Journal     Hybrid Journal  
The VLDB Journal     Hybrid Journal   (Followers: 2)
Theoretical and Mathematical Physics     Hybrid Journal   (Followers: 7)
Theory and Applications of Graphs     Open Access  
Topological Methods in Nonlinear Analysis     Full-text available via subscription  
Transactions of the London Mathematical Society     Open Access   (Followers: 1)
Transformation Groups     Hybrid Journal  
Turkish Journal of Mathematics     Open Access  
Ukrainian Mathematical Journal     Hybrid Journal  
Uniciencia     Open Access  
Uniform Distribution Theory     Open Access  
Unisda Journal of Mathematics and Computer Science     Open Access  
Unnes Journal of Mathematics     Open Access   (Followers: 1)
Unnes Journal of Mathematics Education     Open Access   (Followers: 2)
Unnes Journal of Mathematics Education Research     Open Access   (Followers: 1)
Ural Mathematical Journal     Open Access  
Vestnik Samarskogo Gosudarstvennogo Tekhnicheskogo Universiteta. Seriya Fiziko-Matematicheskie Nauki     Open Access  
Vestnik St. Petersburg University: Mathematics     Hybrid Journal  
VFAST Transactions on Mathematics     Open Access   (Followers: 1)
Vietnam Journal of Mathematics     Hybrid Journal  
Vinculum     Full-text available via subscription  
Visnyk of V. N. Karazin Kharkiv National University. Ser. Mathematics, Applied Mathematics and Mechanics     Open Access   (Followers: 2)
Water SA     Open Access   (Followers: 1)
Water Waves     Hybrid Journal  
Zamm-Zeitschrift Fuer Angewandte Mathematik Und Mechanik     Hybrid Journal   (Followers: 1)
ZDM     Hybrid Journal   (Followers: 2)
Zeitschrift für angewandte Mathematik und Physik     Hybrid Journal   (Followers: 2)
Zeitschrift fur Energiewirtschaft     Hybrid Journal  
Zetetike     Open Access  

  First | 1 2 3 4     

Similar Journals
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The Ramanujan Journal
Journal Prestige (SJR): 1.108
Citation Impact (citeScore): 1
Number of Followers: 0  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1572-9303 - ISSN (Online) 1382-4090
Published by Springer-Verlag Homepage  [2469 journals]
  • Siegel modular forms of degree two and level five

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      Abstract: Abstract We construct a ring of meromorphic Siegel modular forms of degree 2 and level 5, with singularities supported on an arrangement of Humbert surfaces, which is generated by four singular theta lifts of weights 1, 1, 2, 2 and their Jacobian. We use this to prove that the ring of holomorphic Siegel modular forms of degree 2 and level \(\Gamma _0(5)\) is minimally generated by eighteen modular forms of weights 2, 4, 4, 4, 4, 4, 6, 6, 6, 6, 10, 11, 11, 11, 13, 13, 13, 15.
      PubDate: 2022-08-04
       
  • On holomorphic theta functions associated with rank r isotropic discrete
           subgroups

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      Abstract: Abstract We investigate some basic analytic properties of the \(L^2\) -holomorphic automorphic functions on a g-complex vector space associated with isotropic discrete subgroups \(\Gamma _r\) of rank \(r\le g\) . We show that each of these spaces form an infinite dimensional reproducing kernel Hilbert space which looks like a tensor product of a theta Bargmann–Fock space on \(Span_{{\mathbb {C}}}(\Gamma _r)\) and the classical Bargmann–Fock space on a \((g-r)\) -complex space. An explicit orthonormal basis using Fourier series is constructed and the explicit expression of its reproducing kernel function is given in terms of several variables Riemann theta function of particular characteristics.
      PubDate: 2022-08-03
       
  • Sums of the kth divisor function of the ternary quadratic with prime
           variables

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      Abstract: Abstract Let \(d_k(n)\) denote the kth divisor function. In this paper, we proved that the sum $$\begin{aligned} \sum _{1\le p_1,p_2,p_3\le X}d_k(p_1^2+p_2^2+p_3^2) \end{aligned}$$ has an asymptotic formula, where \(p_1,p_2,p_3\) are primes and \(k\ge 2\) is an integer.
      PubDate: 2022-08-01
       
  • Congruences for dimensions of spaces of Siegel cusp forms and 4-core
           partitions

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      Abstract: Abstract Using the relationship between Siegel cusp forms of degree 2 and cuspidal automorphic representations of \(\mathrm{GSp}(4,{\mathbb A}_{{\mathbb Q}})\) , we derive some congruences involving dimensions of spaces of Siegel cusp forms of degree 2 and the class number of \({\mathbb Q}(\sqrt{-p})\) . We also obtain some congruences between the 4-core partition function \(c_4(n)\) and dimensions of spaces of Siegel cusp forms of degree 2.
      PubDate: 2022-08-01
       
  • Identities and inequalities for the $$M_2$$ M 2 -rank of partitions
           without repeated odd parts modulo 8

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      Abstract: Abstract In 2002, Berkovich and Garvan introduced the \(M_2\) -rank of partitions without repeated odd parts. Let \(N_2(a, M, n)\) denote the number of partitions of n without repeated odd parts in which \(M_2\) -rank is congruent to a mod M. Lovejoy and Osburn, and Mao found a number of nice results for \(M_2 \) -rank differences modulo 3, 5, 6, and 10. In this paper, by using some properties for Appell–Lerch sums, we establish the generating functions for \(N_2(a,8,n) \) with \(0\le a \le 7\) . With these generating functions, we obtain some equalities and inequalities on \(M_2\) -rank modulo 8 of partitions without repeated odd parts. We also relate some differences of the \(M_2\) -rank to eighth-order mock theta functions.
      PubDate: 2022-08-01
       
  • The Prouhet–Tarry–Escott problem, indecomposability of polynomials and
           Diophantine equations

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      Abstract: Abstract In this paper, we show how the subjects mentioned in the title are related. First we study the structure of partitions of \(A \subseteq \{1, \dots , n\}\) in k-sets such that the first \(k-1\) symmetric polynomials of the elements of the k-sets coincide. Then we apply this result to derive a decomposability result for the polynomial \(f_A(x) := \prod _{x \in A} (x-a)\) . Finally we prove two theorems on the structure of the solutions (x, y) of the Diophantine equation \(f_A(x)=P(y)\) where \(P(y)\in \mathbb {Q}[y]\) and on shifted power values of \(f_A(x)\) .
      PubDate: 2022-08-01
       
  • On a ternary Diophantine equation involving fractional powers with prime
           variables of a special form

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      Abstract: Abstract Let N be a sufficiently large real number. In this paper, it is proved that, for \(1<c<\frac{2173}{1930}\) , the Diophantine equation $$\begin{aligned} \left[ p_1^c\right] +\left[ p_2^c\right] +\left[ p_3^c\right] =N \end{aligned}$$ is solvable in prime variables \(p_1,p_2,p_3\) such that each of the numbers \(p_i+2\,(i=1,2,3)\) has at most \([\frac{11387}{4346-3860c}]\) prime factors, counted according to multiplicity. This result constitutes a large improvement upon the previous result of Petrov (God Sofiĭ Univ “Sv Kliment Okhridski” Fac Mat Inform 104:171–183, 2017).
      PubDate: 2022-08-01
       
  • A harmonic mean inequality for the q-gamma function

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      Abstract: Abstract In 1984, Kairies proved that for all positive real numbers x the geometric mean of \(\Gamma _q(x)\) and \(\Gamma _q(1/x)\) is greater than or equal to 1, that is, $$\begin{aligned} 1\le \sqrt{\Gamma _q(x)\Gamma _q(1/x)} \quad (0<q\ne 1), \end{aligned}$$ where \(\Gamma _q\) denotes the q-gamma function. This result can be improved if \(q\in (0,1)\) . We show that for all \(x>0\) the harmonic mean of \(\Gamma _q(x)\) and \(\Gamma _q(1/x)\) is greater than or equal to 1, that is, $$\begin{aligned} 1\le \frac{2}{1/\Gamma _q(x)+1/\Gamma _q(1/x)} \quad (0<q<1) \end{aligned}$$ with equality if and only if \(x=1\) .
      PubDate: 2022-08-01
       
  • The sum of divisors function and the Riemann hypothesis

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      Abstract: Abstract Let \(\sigma (n)=\sum _{d\mid n}d\) be the sum of divisors function and \(\gamma =0.577\ldots \) the Euler constant. In 1984, Robin proved that, under the Riemann hypothesis, \(\sigma (n)/n < e^\gamma \log \log n\) holds for \(n > 5040\) and that this inequality is equivalent to the Riemann hypothesis. Under the Riemann hypothesis, Ramanujan gave the asymptotic upper bound $$\begin{aligned} \frac{\sigma (n)}{n}\leqslant e^\gamma \Big (\log \log n- \frac{2(\sqrt{2}-1)}{\sqrt{\log n}}+S_1(\log n)+ \frac{\mathcal {O}(1)}{\sqrt{\log n}\log \log n} \Big ) \end{aligned}$$ with \(S_1(x)=\sum _\rho x^{\rho -1}/(\rho (1-\rho ))= \sum _\rho x^{\rho -1}/ \rho ^2\) where \(\rho \) runs over the non-trivial zeros of the Riemann \(\zeta \) function. In this paper, an effective form of the asymptotic upper bound of Ramanujan is given, which provides a slightly better upper bound for \(\sigma (n)/n\) than Robin’s inequality.
      PubDate: 2022-08-01
       
  • Generalizations of Alladi’s formula for arithmetical semigroups

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      Abstract: Abstract In this article, we prove that a general version of Alladi’s formula with Dirichlet convolution holds for arithmetical semigroups satisfying Axiom A or Axiom \(A^{\#}\) . As applications, we apply our main results to certain semigroups coming from algebraic number theory, arithmetical geometry, and graph theory.
      PubDate: 2022-08-01
       
  • Remarks on Askey–Wilson polynomials and Meixner polynomials of the
           second kind

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      Abstract: Abstract The purpose of this note is to characterize all the sequences of orthogonal polynomials \((P_n)_{n\ge 0}\) such that $$\begin{aligned} \frac{\triangle }{\mathbf{\triangle } x(s-1/2)}P_{n+1}(x(s-1/2))=c_n(\triangle +2\,\mathrm {I})P_n(x(s-1/2)), \end{aligned}$$ where \(\,\mathrm {I}\) is the identity operator, x defines a class of lattices with, generally, nonuniform step-size, and \(\triangle f(s)=f(s+1)-f(s)\) . The proposed method can be applied to similar and to more general problems involving the mentioned operators, in order to obtain new characterization theorems for some specific families of classical orthogonal polynomials on lattices.
      PubDate: 2022-08-01
       
  • Modular forms and ellipsoidal T-designs

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      Abstract: Abstract In recent work, Miezaki introduced the notion of a spherical T-design in \(\mathbb {R}^2\) , where T is a potentially infinite set. As an example, he offered the \(\mathbb {Z}^2\) -lattice points with fixed integer norm (a.k.a. shells). These shells are maximal spherical T-designs, where \(T=\mathbb {Z}^+\setminus 4\mathbb {Z}^+\) . We generalize the notion of a spherical T-design to special ellipses, and extend Miezaki’s work to the norm form shells for rings of integers of imaginary quadratic fields with class number 1.
      PubDate: 2022-08-01
       
  • Hecke-type triple sums associated with mock theta functions

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      Abstract: Abstract In this paper, we obtain some Hecke-type triple sums for the third-order mock theta function \(\omega (q)\) and the fifth-order mock theta functions \(\chi _0(q)\) , \(\chi _1(q)\) . In addition, we extend this topic to the generating function of \(S^{*}(n)\) due to Andrews, Dyson, and Hickerson by investigating its new alternative representation.
      PubDate: 2022-08-01
       
  • Weight 2 CM newforms as p-adic limits

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      Abstract: Abstract Previous works have shown that certain weight 2 newforms are p-adic limits of weakly holomorphic modular forms under repeated application of the U-operator. The proofs of these theorems originally relied on the theory of harmonic Maass forms. Ahlgren and Samart obtained strengthened versions of these results using the theory of holomorphic modular forms. Here, we use such techniques to express all weight 2 CM newforms which are eta quotients as p-adic limits. In particular, we show that these forms are p-adic limits of the derivatives of the Weierstrass mock modular forms associated to their elliptic curves.
      PubDate: 2022-08-01
       
  • On the total number of parts functions associated with ranks of partitions
           modulo 5 and 7

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      Abstract: Abstract Recently, Andrews proved congruences for the total number of parts functions associated with ranks of partitions modulo 5 and 7. In this paper, applying the method of Atkin and Swinnerton-Dyer, we establish identities for these functions from which Andrews’ congruences modulo 5 follow immediately. In particular, the generating functions for total number parts functions associated with ranks of partitions modulo 7 turn out to be theta-functions.
      PubDate: 2022-08-01
       
  • On the average number of subgroups of the group $${\mathbb {Z}}_m \times
           {\mathbb {Z}}_n$$ Z m × Z n with k-th power sequence

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      Abstract: Abstract Let \(\mathbb {Z}_{n}\) be the additive group of residue classes modulo n. Let s(m, n) denote the total number of subgroups of the group \(\mathbb {Z}_{m} \times \mathbb {Z}_{n}\) , where m and n are arbitrary positive integers. Let \(k\ge 2\) be a fixed integer, we consider the k-th power sequence. For \(x\ge 1\) , define $$\begin{aligned} S_{k}(x):=\sum _{m,n \le x}s(m^{k},n^{k}). \end{aligned}$$ In this paper, we obtain an asymptotic formula of \(S_{k}(x)\) by using a multidimensional Perron formula and the complex integration method.
      PubDate: 2022-08-01
       
  • Exterior square gamma factors for cuspidal representations of $$\mathrm
           {GL}_n$$ GL n : simple supercuspidal representations

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      Abstract: Abstract We compute the local twisted exterior square gamma factors for simple supercuspidal representations, using which we prove a local converse theorem for simple supercuspidal representations.
      PubDate: 2022-08-01
       
  • On the distribution of the zeros of Eisenstein series for $$\Gamma
           _0^*(5)$$ Γ 0 ∗ ( 5 ) and $$\Gamma _0^*(7)$$ Γ 0 ∗ ( 7 )

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      Abstract: Abstract The goal of the present paper is to show that all the zeros of the Eisenstein series for \(\Gamma _0^*(5)\) and \(\Gamma _0^*(7)\) on the standard fundamental domain lie on the lower boundary arcs. These are improvements of the results in Shigezumi (Kyushu J Math 61:527–549, 2007).
      PubDate: 2022-08-01
       
  • On Y-coordinates of Pell equations which are Lucas numbers

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      Abstract: Abstract Let \(d\ge 2\) be an integer which is not a square. We show that if \((L_n)_{n\ge 0}\) is the Lucas sequence and \((X_m,Y_m)_{m \ge 1}\) is the mth solution of the Pell equation \(X^2-dY^2=\pm 1\) , then the equation \(Y_m=L_n\) has at most two positive integer solutions (m, n) except for \(d=2\) when it has the three solutions \((m,n)=(1,1),~(2,0),~(5,7)\) .
      PubDate: 2022-07-31
       
  • Multiplicative functions supported on the k-free integers with small
           partial sums

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      Abstract: Abstract We provide examples of multiplicative functions f supported on the k-free integers such that at primes \(f(p)=\pm 1\) and such that the partial sums of f up to x are \(o(x^{1/k})\) . Further, if we assume the Generalized Riemann Hypothesis, then we can improve the exponent 1/k: There are examples such that the partial sums up to x are \(o(x^{1/(k+\frac{1}{2})+\epsilon })\) , for all \(\epsilon >0\) . This generalizes to the k-free integers the results of Aymone (J. Number Theory, 212:113-121, 2020).
      PubDate: 2022-07-31
       
 
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