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We construct new families of (q-) difference and (contour) integral operators having nice actions on Koornwinder's multivariate orthogonal polynomials. We further show that the Koornwinder polynomials can be constructed by suitable…

Classical Analysis and ODEs · Mathematics 2007-05-23 Eric M. Rains

We prove analytic and combinatorial identities reminiscent of Schur's classical partition theorem. Specifically, we show that certain families of overpartitions whose parts satisfy gap conditions are equinumerous with partitions whose parts…

Number Theory · Mathematics 2013-11-22 Kathrin Bringmann , Jeremy Lovejoy , Karl Mahlburg

In 2008, Han rediscovered an expansion of powers of Dedekind $\eta$ function attributed to Nekrasov and Okounkov (which was actually first proved the same year by Westbury) by using a famous identity of Macdonald in the framework of type…

Combinatorics · Mathematics 2015-09-16 Mathias Pétréolle

A well-known and fundamental property of the Macdonald polynomials $P_\lambda(x;q,t)$ is their invariance under the transformation sending $(q,t)$ to $(q^{-1},t^{-1})$. Recently, Concha and Lapointe showed that this property extends in an…

Combinatorics · Mathematics 2025-08-29 Daniel Orr , Johnny Rivera

Three kinds of identities involving non-commutating operators and Euler and Bernoulli polynomials are studied. The first identity, as given by Bender and Bettencourt, expresses the nested commutator of the Hamiltonian and momentum operators…

Mathematical Physics · Physics 2016-01-20 V. De Angelis , C. Vignat

We develop basic constructions of the Baxter operator formalism for the Macdonald polynomials associated with root systems of type A. Precisely we construct a dual pair of mutually commuting Baxter operators such that the Macdonald…

Algebraic Geometry · Mathematics 2015-06-04 Anton Gerasimov , Dimitri Lebedev , Sergey Oblezin

We develop the connection between Rota-Baxter operators arisen from algebra and mathematical physics and Bernoulli polynomials. We state that a trivial property of Rota-Baxter operators implies the symmetry of the power sum polynomials and…

Number Theory · Mathematics 2022-01-25 Vsevolod Gubarev

We define a theta operator on p-adic vector-valued modular forms on unitary groups of arbitrary signature, over a quadratic imaginary field in which p is inert. We study its effect on Fourier-Jacobi expansions and prove that it extends…

Number Theory · Mathematics 2019-10-16 Ehud De Shalit , Eyal Z. Goren

This paper further generalizes a recent result of Shannon and Ollerton who resurrected an old identity due to Ledin. This paper generalizes the Ledin-Shannon-Ollerton result to all the metallic sequences. The results give closed formulas…

Combinatorics · Mathematics 2022-05-10 Russell Jay Hendel

In this note, after recalling a proof of the Macdonald identities for untwisted affine root systems, we derive the Macdonald identities for twisted affine root systems.

Representation Theory · Mathematics 2025-01-16 K. Iohara , Y. Saito

We provide a countable set of conditions based on elementary symmetric polynomials that are necessary and sufficient for a trace class integral operator to be positive semidefinite, which is an important cornerstone for quantum theory in…

Quantum Physics · Physics 2023-03-23 G. Homa , R. Balka , J. Z. Bernád , M. Károly , A. Csordás

A systematic procedure for generating certain identities involving elementary symmetric functions is proposed. These identities, as particular cases, lead to new identities for binomial and q-binomial coefficients.

Mathematical Physics · Physics 2007-05-23 S. Chatyrvedi , V. Gupta

A generic differential operator on the vectorial space of polynomial functions was presented in a recent work and applied in the study of differential relations fulfilled by polynomial sequences either orthogonal or 2-orthogonal. Using the…

Classical Analysis and ODEs · Mathematics 2021-12-28 Teresa Augusta Mesquita

In this work, we introduce a new generalized integral transform involving many potentially known or new transforms as special cases. Basic properties of the new integral transform, that investigated in this work, include the existence…

Classical Analysis and ODEs · Mathematics 2022-07-28 Mohamed Akel

The main result of this paper is to show that all binomial identities are orderable. This is a natural statement in the combinatorial theory of finite sets, which can also be applied in distributed computing to derive new strong bounds on…

Discrete Mathematics · Computer Science 2016-06-24 Dmitry N. Kozlov

Recently, Nath and Das investigated congruence properties for the second order mock theta function $B(q)$. In their paper, they asked for analytic proofs of three identities on the second order mock theta functions $A(q)$, $B(q)$ and…

Number Theory · Mathematics 2026-01-06 Xingyuan Cai , Eric H. Liu , Olivia X. M. Yao

We discover a new version of the celebrated Montgomery identity via quantum integral operators and establish certain quantum integral inequalities of Ostrowski type by using this identity. Relevant connections of the results obtained in…

General Mathematics · Mathematics 2019-07-09 Mehmet Kunt , Artion Kashuri , Tingsong Du

Comtrans algebras, arising in web geometry, have two trilinear operations, commutator and translator. We determine a Gr\"obner basis for the comtrans operad, and state a conjecture on its dimension formula. We study multilinear polynomial…

Rings and Algebras · Mathematics 2025-08-01 Murray R. Bremner , Hader A. Elgendy

Tensor polynomial identities generalize the concept of polynomial identities on $d \times d$ matrices to identities on tensor product spaces. Here we completely characterize a certain class of tensor polynomial identities in terms of their…

Rings and Algebras · Mathematics 2022-09-13 Felix Huber , Claudio Procesi

Let $D$ and $U$ be linear operators in a vector space (or more generally, elements of an associative algebra with a unit). We establish binomial-type identities for $D$ and $U$ assuming that either their commutator $[D,U]$ or the second…

Classical Analysis and ODEs · Mathematics 2018-01-17 Peter Kuchment , Sergey Lvin