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Fischer provided a new type of binomial determinant for the number of alternating sign matrices involving the third root of unity. In this paper we prove that her formula, when replacing the third root of unity by an indeterminate $q$, is…

Combinatorics · Mathematics 2021-01-28 Florian Aigner

This paper has three main objectives: (i) To establish an isomorphism between Jacobi forms of index $D_{2n+1}$ (lattice index) and elliptic modular forms of level $2$. (ii) To provide an explicit formula for the Fourier coefficients of…

Number Theory · Mathematics 2026-04-01 Shuichi Hayashida

In this work, the determinants of matrices constructed by evaluating homogeneous bivariate polynomials at pairs of vectors are investigated. For a polynomial $p(x,y)=\sum\limits_{i=0}^k \alpha_i x^{k-i}y^i$, an explicit factorization of the…

Rings and Algebras · Mathematics 2026-01-27 Somphong Jitman , Wannarut Rungrottheera

Following van der Poorten, we consider a family of nonlinear maps which are generated from the continued fraction expansion of a function on a hyperelliptic curve of genus $\mathrm{g}$. Using the connection with the classical theory of…

Number Theory · Mathematics 2020-01-01 Andrew N. W. Hone

In this paper we will formulate $4\times4$ Riemann-Hilbert problems for Toeplitz+Hankel determinants and the associated system of orthogonal polynomials, when the Hankel symbol is supported on the unit circle and also when it is supported…

Mathematical Physics · Physics 2020-10-08 Roozbeh Gharakhloo , Alexander Its

In the space of square matrices, we characterize row-generated subspaces, on which the determinant is an irreducible polynomial. As a corollary, we characterize square systems of polynomial equations with indeterminate coefficients, whose…

Algebraic Geometry · Mathematics 2026-02-17 Vladislav Pokidkin

We compute Hecke eigenform bases of spaces of level one, degree~three Siegel modular forms and 2-Euler factors of the eigenforms through weight 22. Our method uses the Fourier coefficients of Siegel Eisenstein series, which are fully known…

Number Theory · Mathematics 2017-09-19 Oliver D. King , Cris Poor , Jerry Shurman , David S. Yuen

The sharp bound for the third Hankel determinant for the coefficients of the inverse function of starlike function of order $1/2$ is obtained. In light of this, we can deduce that the functionals $|H_3(1)(f)|$ and $|H_3(1)(f^{-1})|$ exhibit…

Complex Variables · Mathematics 2023-07-07 Molla Basir Ahamed , Partha Pratim Roy

In this paper we give improved, probably not sharp, upper bounds of the Hankel determinant of third order for various classes of univalent functions and conjecture the sharp one.

Complex Variables · Mathematics 2020-10-09 Milutin Obradovic , Nikola Tuneski

Hankel determinantal rings, i.e., determinantal rings defined by minors of Hankel matrices of indeterminates, arise as homogeneous coordinate rings of higher order secant varieties of rational normal curves; they may also be viewed as…

Commutative Algebra · Mathematics 2018-07-17 Aldo Conca , Maral Mostafazadehfard , Anurag K. Singh , Matteo Varbaro

We study the cyclic $U(\mathfrak{gl}_n)$-module generated by the $l$-th power of the $\alpha$-determinant. When $l$ is a non-negative integer, for all but finite exceptional values of $alpha$, one shows that this cyclic module is isomorphic…

Representation Theory · Mathematics 2008-09-01 Kazufumi Kimoto , Sho Matsumoto , Masato Wakayama

In 1975 K. Michael Day produced an exact formula for the determinants of finite Toeplitz matrices whose symbols are rational. The answer is a sum that involves powers of the roots of the numerator of the symbol and whose coefficients depend…

Functional Analysis · Mathematics 2025-06-23 Estelle Basor , Kent E. Morrison

In the present investigation the authors obtain upper bounds for the second Hankel determinant of the classes bi-starlike and bi-convex functions of order beta.

Complex Variables · Mathematics 2015-10-08 Erhan Deniz , Murat Çağlar , Halit Orhan

The aim of this paper is to give a full detail of the proof given by Harder of a theorem on the denominator of the Eisenstein class for $\mathrm{SL}_2(\mathbb{Z})$ and to show that the theorem has some interesting applications including the…

Number Theory · Mathematics 2024-03-20 Hohto Bekki , Ryotaro Sakamoto

We prove that the Cayley-Menger determinant of an $n$-dimensional simplex is an absolutely irreducible polynomial for $n\geq3.$ We also study the irreducibility of polynomials associated to related geometric constructions.

Commutative Algebra · Mathematics 2007-05-23 Carlos D'Andrea , Martin Sombra

This note collects some facts and conjectures about the Hankel determinants and their generating functions of the columns of Hoggatt triangles which apparently are related to combinatorial objects such as Young tableaux and Narayana…

Combinatorics · Mathematics 2022-02-24 Johann Cigler

Let $f_n$ be a random polynomial of degree $n$, whose coefficients are independent and identically distributed random variables with mean-zero and variance one. Let $\Delta(f_n)$ denote the discriminant of $f_n$, that is $\Delta(f_n) =…

Probability · Mathematics 2025-06-17 Marcus Michelen , Oren Yakir

In this paper, we provide an estimation for the sharp bound of the third Hankel determinant of starlike functions of order $\alpha$, where $\alpha$ ranges in the interval $[0, 1/6]\cup \{1/2\}$ and thereby extending the result of Rath et…

Complex Variables · Mathematics 2023-09-07 Neha Verma , S. Sivaprasad Kumar

Let $X$ be a complex $K3$ surface with an effective action of a group $G$ which preserves the holomorphic symplectic form. Let $$ Z_{X,G}(q) = \sum_{n=0}^{\infty} e\left(\operatorname{Hilb}^{n}(X)^{G} \right)\, q^{n-1} $$ be the generating…

Algebraic Geometry · Mathematics 2025-04-23 Jim Bryan , Ádám Gyenge

Using some properties of the Grunsky coefficients we improve earlier results for upper bounds of the Hankel determinants of the second and third order for the class $\mathcal{S}$ of univalent functions.

Complex Variables · Mathematics 2024-11-20 Milutin Obradović , Nikola Tuneski