Sökresultat

The Stieltjes-Wigert polynomials, which correspond to an indeterminate moment problem on the positive half-line, are eigenfunctions of a second order q-difference operator. We consider the orthogonality measures for which the difference operator is symmetric in the corresponding weighted L2-spaces. Under some additional assumptions these measures are exactly the solutions to the q-Pearson equation

Contact allergy (CA) is not uncommon in the population, including to various fragrance allergens. If not diagnosed correctly, allergic contact dermatitis (ACD) may ensue, because targeted allergen avoidance is not possible. The primary objective of the study is to estimate the prevalence of CA to seven fragrance materials in patients with suspected ACD across Europe. Based on the outcome, a conclu

Background: Eating disorders significantly impact physical health and have negative psychosocial consequences. The global burden of anorexia nervosa and bulimia nervosa among young females is estimated to account for 1.9 million disability-adjusted life years. Early identification of disordered eating attitudes is critical for preventing the progression to more severe forms of eating disorders; ho

We survey results on Chebyshev polynomials centered around the work of H. Widom. In particular, we discuss asymptotics of the polynomials and their norms and general upper and lower bounds for the norms. Several open problems are also presented.

This is the first of three volumes that form the Encyclopedia of Special Functions, an extensive update of the Bateman Manuscript Project. Volume 1 contains most of the material on orthogonal polynomials, from the classical orthogonal polynomials of Hermite, Laguerre and Jacobi to the Askey–Wilson polynomials, which are the most general basic hypergeometric orthogonal polynomials. Separate chapter

De kristnas historia i Mellanöstern under tvåtusen år.

This article analyses Swedish foreign policy from the early 1800s to the present day. A recurring theme centres on discussions about non-belligerence and neutrality, which have by no means been undisputed ideals. Additionally, the article explores the significant influence of Sweden’s historical experience, particularly the Swedish Great Power Era of the 17th and early 18th centuries, on shaping the

Like other societal institutions, academia today faces an existential crisis. Rising inequality and authoritarianism, coupled with climate breakdown and collapsing ecosystems, are threatening the conditions under which academic knowledge is produced and shared. At the same time, academics are coming to terms with their institutions’ role in contributing to these processes, particularly in the Glob

此次断资行为不仅反映日本对国际监督的不安，也可能鼓舞国内保守派更强烈反对性别平等改革。更令人担忧的是，日本似乎试图通过财政杠杆对国际机构施压。这无疑对它在人权和全球性别正义上的承诺构成挑战。