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The paper gives some criteria for partial sums of rational number sequences to be not rational functions and to be not algebraic functions. As an application, we study partial sums of some famous rational number sequences in mathematical…

Commutative Algebra · Mathematics 2014-06-06 Duong Quoc Viet , Truong Thi Hong Thanh

In this paper we investigate congruence relationships of particular finite generalized harmonic numbers sums. We suggest more transparent and simpler method to analyse these sums and present several additional results for certain special…

Number Theory · Mathematics 2020-12-01 Aidas Medžiūnas

We supplement the result of the first part of the work with estimates of the integrals of the difference of subharmonic functions in measure with some deterioration of the absolute constants, but these estimates have the form of a…

Complex Variables · Mathematics 2021-07-13 B. N. Khabibullin

This article is written with the hope to draw attention to a method that uses integral transforms to find exact values for a large class of convergent series (and, in particular, series of rational terms). We apply the method to some series…

Classical Analysis and ODEs · Mathematics 2007-10-08 Costas J. Efthimiou

We establish a novel connection between two research areas in non-classical logics which have been developed independently of each other so far: on the one hand, input/output logic, introduced within a research program developing logical…

We introduce several highness notions on degrees related to the problem of computing isomorphisms between structures, provided that isomorphisms exist. We consider variants along axes of uniformity, inclusion of negative information, and…

Logic · Mathematics 2021-09-17 Wesley Calvert , Johanna N. Y. Franklin , Dan Turetsky

Several open questions are discussed. The topics include cohomology of current and related Lie algebras, algebras represented as the sum of subalgebras, structures and phenomena peculiar to characteristic $2$, and variations on themes of…

Rings and Algebras · Mathematics 2018-05-02 Pasha Zusmanovich

These lecture notes were written with the aim to provide an accessible though technically solid introduction to the logic of systematical analyses of statistical data to both undergraduate and postgraduate students, in particular in the…

Applications · Statistics 2019-09-02 Henk van Elst

In the paper I study properties of random polynomials with respect to a general system of functions. Some lower bounds for the mathematical expectation of the uniform and recently introduced integral-uniform norms of random polynomials are…

Probability · Mathematics 2007-05-23 Pavel Grigoriev

We study sums of the form $\sum_{k=m}^n a_{nk} b_{km}$, where $a_{nk}$ and $b_{km}$ are binomial coefficients or unsigned Stirling numbers. In a few cases they can be written in closed form. Failing that, the sums still share many common…

Combinatorics · Mathematics 2025-09-30 Marin Knežević , Vedran Krčadinac , Lucija Relić

In this paper, we got some refinements of the norm inequalities related to the Heinz mean and logarithmic mean.

Classical Analysis and ODEs · Mathematics 2022-06-14 Guanghua Shi

In this short note, we provide an elementary complex analytic method for converting known real integrals into numerous strange and interesting looking real integrals.

History and Overview · Mathematics 2009-11-05 Josh Isralowitz

In this note, we derive a finite summation formula and an infinite summation formula involving Harmonic numbers of order up to some order by means of several definite integrals

Number Theory · Mathematics 2021-12-01 Taekyun Kim , Dae San Kim , Hyunseok Kwon , Jongkyum Kwon

Formal definitions of quantities, quantity spaces, dimensions and dimension groups are introduced. Based on these concepts, a theoretical framework and a practical algorithm for dimensional analysis are developed, and examples of…

History and Overview · Mathematics 2015-04-20 Dan Jonsson

These notes are an introduction to the theory of quantum symmetries of finite and infinite sets, graphs, and locally compact spaces.

Quantum Algebra · Mathematics 2026-03-27 Christian Voigt

In this note, we propose simple summations for primes, which involve two finite nested sums and Bernoulli numbers. The summations can also be expressed in terms of Bernoulli polynomials.

History and Overview · Mathematics 2023-03-20 Jean-Christophe Pain

I review recent work in the statistics literature on instrumental variables methods from an econometrics perspective. I discuss some of the older, economic, applications including supply and demand models and relate them to the recent…

Methodology · Statistics 2014-10-02 Guido W. Imbens

We introduce new refinements of the Bell, factorial, and unsigned Stirling numbers of the first and second kind that unite the derangement, involution, associated factorial, associated Bell, incomplete Stirling, restricted factorial,…

Combinatorics · Mathematics 2017-10-10 Tanay Wakhare

This note presents a uniform treatment of normality and three of its variants---topological, weak and seminormality---for Noetherian schemes. The key is to define these notions for pairs $(Z, X)$ consisting of a (not necessarily reduced)…

Algebraic Geometry · Mathematics 2015-08-10 János Kollár

The use of the umbral formalism allows a significant simplification of the derivation of sum rules involving products of special functions and polynomials. We rederive in this way known sum rules and addition theorems for Bessel functions.…

Mathematical Physics · Physics 2015-06-11 D. Babusci , G. Dattoli , K. Gorska , K. A. Penson