Results 31 to 40 of about 245,509 (216)

Hybrid Moments of the Riemann Zeta‐Function

open access: yesJournal of Numbers, Volume 2015, Issue 1, 2015., 2015
The “hybrid” moments ∫T2Tζ12/+itk∫t-Gt+Gζ12/+ixldxmdt Tε≪G=GT≪T of the Riemann zeta‐function ζ(s) on the critical line Res=12/ are studied. The expected upper bound for the above expression is Oε(T1+εGm). This is shown to be true for certain specific values of k,l,m∈N, and the explicitly determined range of G=G(T;k,l,m).
Aleksandar Ivić, Yong-Gao Chen
wiley   +1 more source

Subnormal Weighted Shifts on Directed Trees and Composition Operators in L2‐Spaces with Nondensely Defined Powers

open access: yesAbstract and Applied Analysis, Volume 2014, Issue 1, 2014., 2014
It is shown that for every positive integer n there exists a subnormal weighted shift on a directed tree (with or without root) whose nth power is densely defined while its (n + 1)th power is not. As a consequence, for every positive integer n there exists a nonsymmetric subnormal composition operator C in an L2‐space over a σ‐finite measure space such
Piotr Budzyński   +4 more
wiley   +1 more source

A Note on Unbounded Hyponormal Composition Operators in L2‐Spaces

open access: yesJournal of Function Spaces, Volume 2012, Issue 1, 2012., 2012
We construct an unbounded hyponormal composition operator Cϕ in L2‐space such that the domains of Cϕ2 and Cϕ2 are trivial.
Piotr Budzyński, Anna Kamińska
wiley   +1 more source

Blood Serum Levels of Proinflammatory Cytokines in Patients with Different Degrees of Biliary Pancreatitis

open access: yesCanadian Journal of Gastroenterology and Hepatology, Volume 20, Issue 10, Page 645-648, 2006., 2006
BACKGROUND: Proinflammatory cytokines play a fundamental role in the local and systemic inflammatory responses in the initial stages of acute biliary pancreatitis (ABP) and in the development of severe forms of the disease. OBJECTIVES: The aim of the present study was to assess the systemic release of proinflammatory cytokines and to characterize ...
Józefa Panek   +6 more
wiley   +1 more source

Estimates of convolutions of certain number‐theoretic error terms

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2004, Issue 1, Page 1-23, 2004., 2004
Several estimates for the convolution function C [f(x)]:=∫1xf(y) f(x/y)(dy/y) and its iterates are obtained when f(x) is a suitable number‐theoretic error term. We deal with the case of the asymptotic formula for ∫0T|ζ(1/2+it)|2kdt(k = 1, 2), the general Dirichlet divisor problem, the problem of nonisomorphic Abelian groups of given order, and the ...
Aleksandar Ivić
wiley   +1 more source

A note on metric preserving functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 19, Issue 1, Page 199-200, 1996., 1995
The purpose of this note is to study modifications of the Euclidean metric on IR with the following property. There is a monotone sequence of closed balls with empty intersection.
Jozef Dobos, Zbigniew Piotrowski
wiley   +1 more source

Matematikos ir gamtos fakultetas Lietuvos universitete ir jo raida

open access: yesLietuvos Matematikos Rinkinys, 2018
Matematikos ir gamtos fakulteto ištakomis Kaune laikomi 1920-ieji metai, kai buvo įsteigti Lietuvos Aukštieji Kursai, į kurių sudėtį įėjo ir Matematikos-fizikos skyrius. 1922 m.
Virginija Klusienė   +2 more
doaj   +1 more source

Katedra chrześcijańskiej nauki społecznej na Uniwersytecie Jagiellońskim

open access: yes, 1989
Die Veroffentlichung der Enzyklika "Rerum novarum" im Jahre 1891 weckte allenthalben ein grosses Interesse fur die katholische Soziallehre und regte viele zur sozialen Arbeit an.
Stanisław Piech
semanticscholar   +1 more source

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