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We generalize the "motivated proof" of the Rogers-Ramanujan identities given by Andrews and Baxter to provide an analogous "motivated proof" of Gordon's generalization of the Rogers-Ramanujan identities. Our main purpose is to provide…

Combinatorics · Mathematics 2012-05-31 James Lepowsky , Minxian Zhu

Let $X$ be a locally finite partially ordered set (poset), $K$ a field of characteristic not 2, and $I(X,K)$ the incidence algebra over $K$. In this paper, we prove that every Jordan $*$-derivation of $I(X,K)$ is an inner $*$-derivation and…

Rings and Algebras · Mathematics 2025-07-21 Liuqing Yang

Some applications of a result, which is proved recently, is considered. We first prove three determinantal identities concerning the binomial coefficient and Stirling numbers of the first and the second kind. We also easily obtain the…

Combinatorics · Mathematics 2013-02-12 Milan Janjic

In this paper, we connect two well established theories, the Fibonacci numbers and the Jordan algebras. We give a series of matrices, from literature, used to obtain recurrence relations of second-order and polynomial sequences. We also…

Number Theory · Mathematics 2020-09-17 Santiago Alzate , Oscar Correa , Rigoberto Flórez

We show that the Jordan decomposition of characters of finite reductive groups can be chosen so that if the centralizer of the relevant semisimple element in the dual group is connected, then the map is Galois-equivariant. Further, in this…

Group Theory · Mathematics 2024-09-20 A. A. Schaeffer Fry , Jay Taylor , C. Ryan Vinroot

We describe all degenerations of the variety $\mathfrak{Jord}_3$ of Jordan algebras of dimension three over $\mathbb{C}.$ In particular, we describe all irreducible components in $\mathfrak{Jord}_3.$ For every $n$ we define an…

Rings and Algebras · Mathematics 2021-11-02 Ilya Gorshkov , Ivan Kaygorodov , Yury Popov

In this paper we prove an asymptotically sharp Bernstein-type inequality for polynomials on analytic Jordan arcs. Also a general statement on mapping of a domain bounded by finitely many Jordan curves onto a complement to a system of the…

Complex Variables · Mathematics 2015-06-05 Sergei Kalmykov , Béla Nagy

In this article, a new notion of $n$-Jordan homomorphism namely the mixed $n$-Jordan homomorphism is introduced. It is proved that how a mixed $(n+1)$-Jordan homomorphism can be a mixed $n$-Jordan homomorphism and vice versa. By means of…

Functional Analysis · Mathematics 2019-03-25 Masoumeh Neghabi , Abasalt Bodaghi , Abbas Zivari-Kazempour

We present a generalization of the Newton-Girard identities, along with some applications. As an addendum, we collect many evaluations of symmetric polynomials to which these identities apply.

Number Theory · Mathematics 2019-01-25 Tanay Wakhare

A variety is unirational if it is dominated by a rational variety. A variety is rationally connected if two general points can be joined by a rational curve. This paper aims to show that the two notions can cooperate and, building on…

Algebraic Geometry · Mathematics 2014-03-28 Massimiliano Mella

We define Jordan quadruple systems by the polynomial identities of degrees 4 and 7 satisfied by the Jordan tetrad {a,b,c,d} = abcd + dcba as a quadrilinear operation on associative algebras. We find further identities in degree 10 which are…

Rings and Algebras · Mathematics 2025-07-22 Murray Bremner , Sara Madariaga

Here we demonstrate the emergence of Grassmann variables in matrix models based on the exceptional Jordan algebra. The Grassmann algebras are built naturally using the octonion algebra. We argue the appearance of Grassmann variables…

High Energy Physics - Theory · Physics 2010-04-05 Michael Rios

We prove that an analogue of Jordan's theorem on finite subgroups of general linear groups holds for the groups of biregular automorphisms of algebraic surfaces. This gives a positive answer to a question of Vladimir L. Popov.

Algebraic Geometry · Mathematics 2014-06-20 Tatiana Bandman , Yuri G. Zarhin

It is demonstrated that the knowledge of a single and arbitrary solution of the three-dimension\-al Jacobi equations allows determining infinite families of new solutions, which are generally and explicitly constructed in what follows.…

Mathematical Physics · Physics 2019-11-05 Benito Hernández-Bermejo

Assuming Borisov--Alexeev--Borisov conjecture, we prove that there is a constant $J=J(n)$ such that for any rationally connected variety $X$ of dimension $n$ and any finite subgroup $G\subset Bir(X)$ there exists a normal abelian subgroup…

Algebraic Geometry · Mathematics 2014-06-03 Yuri Prokhorov , Constantin Shramov

We show that automorphism groups of Moishezon threefolds are always Jordan.

Algebraic Geometry · Mathematics 2019-09-27 Yuri Prokhorov , Constantin Shramov

Let $A$ and $B$ be associative algebras over a field $F$ with {\rm char}$(F)\ne 2$. Our first main result states that if $A$ is unital and equal to its commutator ideal, then every Jordan epimorphism $\varphi:A\to B$ is the sum of a…

Rings and Algebras · Mathematics 2025-08-12 Matej Brešar , Efim Zelmanov

In this note, we prove that any Jordan derivation on the generalized matrix ring $T_n(R,M)$ is a derivation. This extends some well-known results of this branch due to Bre\v{s}ar et al. in the cited literature.

Rings and Algebras · Mathematics 2025-07-10 Peter Danchev , Ayda Fatehi , Masoome Zahiri , Saeede Zahiri

We classify simple finite Jordan conformal superalgebras and establish preliminary results for the classification of simple finite Jordan pseudoalgebras.

Quantum Algebra · Mathematics 2008-05-06 Victor G. Kac , Alexander Retakh

We prove an interesting identity for the sum of determinants, which is a generalization of the sum of a geometric progression. The proof is quite long and a number of other identities are proved along the way. Some of the more elementary…

Combinatorics · Mathematics 2024-08-28 T. C. Dorlas