Results 1 to 10 of about 7,369,874 (310)

Quasar Luminosity Function at z = 7

The Astrophysical Journal Letters, 2023
We present the quasar luminosity function (LF) at z = 7, measured with 35 spectroscopically confirmed quasars at 6.55 < z < 7.15. The sample of 22 quasars from the Subaru High- z Exploration of Low-Luminosity Quasars (SHELLQs) project, combined with 13 ...
Yoshiki Matsuoka, Masafusa Onoue, Kazushi Iwasawa, Michael A. Strauss, Nobunari Kashikawa, Takuma Izumi, Tohru Nagao, Masatoshi Imanishi, Masayuki Akiyama, John D. Silverman, Naoko Asami, James Bosch, Hisanori Furusawa, Tomotsugu Goto, James E. Gunn, Yuichi Harikane, Hiroyuki Ikeda, Kohei Inayoshi, Rikako Ishimoto, Toshihiro Kawaguchi, Satoshi Kikuta, Kotaro Kohno, Yutaka Komiyama, Chien-Hsiu Lee, Robert H. Lupton, Takeo Minezaki, Satoshi Miyazaki, Hitoshi Murayama, Atsushi J. Nishizawa, Masamune Oguri, Yoshiaki Ono, Taira Oogi, Masami Ouchi, Paul A. Price, Hiroaki Sameshima, Naoshi Sugiyama, Philip J. Tait, Masahiro Takada, Ayumi Takahashi, Tadafumi Takata, Masayuki Tanaka, Yoshiki Toba, Shiang-Yu Wang, Takuji Yamashita   +43 more
doaj   +4 more sources

On the approximate functional equation of Hecke's Z-functions

Lithuanian Mathematical Journal, 1964
The abstracts (in two languages) can be found in the pdf file of the article. Original author name(s) and title in Russian and Lithuanian: К. Булота. О приближенном функциональном уравнении Z-функций Гекке K. Bulota.
K. Bulota
openaire   +3 more sources

On the function Z(t) associated with the Riemann zeta-function

Journal of Mathematical Analysis and Applications, 1986
Let, as usual, \(Z(t)=e^{i\theta (t)}\zeta (1/2+it)\), where \(\theta (t)=\arg \pi^{-(1/4+it/2)} \Gamma (1/4+it/2).\) It is well known that on the Riemann hypothesis the zeros of \(Z(t)\) and those of \(Z'(t)\) are interlacing. In this paper a similar result is proved for \(Z'(t)\): if the Riemann hypothesis is true then there is a \(t_ 0>0\) such that
Robert J. Anderson
openaire   +4 more sources

Functions of the uvula and Z‐pharyngoplasty [PDF]

Psychiatry and Clinical Neurosciences, 2000
AbstractUPPP includes uvulotomy. The uvula works as the pilot for eating and swallowing. We performed an operation which left the uvula intact and opened the pharynx by Z‐opening the palate, Z‐pharyngoplasty (ZPP). Twenty‐four patients were studied before and after ZPP. The results of the operations were satisfactory. No patients complained of symptoms
Masayoshi Nitta, Susumu Mukai, Chikako Mukai   +2 more
  +8 more sources

Functions f: Z /pn Z ?Z /pn Z induced by polynomials of Z[X] [PDF]

Annali di Matematica Pura ed Applicata, 2002
We consider the kernel of the natural map ϕ n : Z[X]?{f: Z /pn Z ?Z /pn Z }. We give a first description of it as an ideal and a second one as a Z-module.
Andrea Bandini
openaire   +4 more sources

Evolution of the galaxy luminosity function at z < 0.3 [PDF]

Monthly Notices of the Royal Astronomical Society, 2004
We measure the redshift-dependent luminosity function and the comoving radial density of galaxies in the Sloan Digital Sky Survey Data Release 1 (SDSS DR1). Both measurements indicate that the apparent number density of bright galaxies increases by a factor ~3 as redshift increases from z=0 to z=0.3.
J. Loveday
openaire   +6 more sources

The association between muscle strength and z scores of pulmonary function [PDF]

Scientific Reports
Z scores and percent predicted values of spirometry parameters are widely used for the evaluation of pulmonary function and detection of respiratory diseases.
Laura Petraglia, Klara Komici, Leonardo Bencivenga, Giuseppe Rengo, Raffaella Pagliaro, Angela Sciattarella, Nicola Ferrara, Andrea Bianco, Germano Guerra   +8 more
doaj   +2 more sources

Momentum Ranking Function of Z-Numbers and its Application to Game Theory

مجلة بغداد للعلوم, 2023
After Zadeh introduced the concept of z-number scientists in various fields have shown keen interest in applying this concept in various applications. In applications of z-numbers, to compare two z-numbers, a ranking procedure is essential.  While a few
K. PARAMESWARI, G. VELAMMAL
doaj   +1 more source

A note on the zeros of the derivatives of Hardy's function Z(t)$Z(t)$

Mathematika, 2023
AbstractUsing the twisted fourth moment of the Riemann zeta‐function, we study large gaps between consecutive zeros of the derivatives of Hardy's function , improving upon previous results of Conrey and Ghosh (J. Lond. Math. Soc. 32 (1985) 193–202), and of the second named author (Acta Arith. 111 (2004) 125–140). We also exhibit small distances between
Bui, Hung, Hall, Richard R.
openaire   +3 more sources

ℤ-polyregular functions

2023 38th Annual ACM/IEEE Symposium on Logic in Computer Science (LICS), 2023
This paper introduces a robust class of functions from finite words to integers that we call Z-polyregular functions. We show that it admits natural characterizations in terms of logics, Z-rational expressions, Z-rational series and transducers. We then study two subclass membership problems. First, we show that the asymptotic growth rate of a function
Colcombet, Thomas, Douéneau-Tabot, Gaëtan, Lopez, Aliaume   +2 more
openaire   +4 more sources