Results 141 to 150 of about 4,787 (264)

Quantitative asymptotics for polynomial patterns in the primes

open access: yesMathematika, Volume 72, Issue 3, July 2026.
Abstract We prove quantitative estimates for averages of the von Mangoldt and Möbius functions along polynomial progressions n+P1(m),…,n+Pk(m)$n+P_1(m),\ldots, n+P_k(m)$ for a large class of polynomials Pi$P_i$. The error terms obtained save an arbitrary power of logarithm, matching the classical Siegel–Walfisz error term.
Lilian Matthiesen   +2 more
wiley   +1 more source

Improving Implied Volatility Forecasts for American Options Using Neural Networks

open access: yesJournal of Futures Markets, Volume 46, Issue 6, Page 1137-1153, June 2026.
ABSTRACT This paper explores the application of neural networks to improve pricing of American options. Focusing on both American and European options on the S&P 100 index from January 2016 to August 2023, we integrate neural networks to model the difference between market‐implied and model‐implied volatilities derived from the Black‐Scholes and Heston
Haitong Jiang, Emese Lazar, Miriam Marra
wiley   +1 more source

Vascular Immune Remodeling: A CD4+ T Cell–Driven Immune Trajectory Associated With Arterial Stiffness

open access: yesAging Cell, Volume 25, Issue 6, June 2026.
This study integrated arterial stiffness with peripheral TCRβ repertoire and single‐cell transcriptomics in adults without cardiovascular disease, revealing a CD4+ T cell–driven “vascular immune remodeling” trajectory distinct from classical immunosenescence: increased TCR diversity, broad expansion of low‐frequency public clones and virus‐associated ...
Yu Miao   +9 more
wiley   +1 more source

Cubes in elliptic divisibility sequences

open access: yes, 2012
Elliptic divisibility sequences are generalizations of a class of integer divisibility sequences called Lucas sequences. There has been much interest in cases where the terms of Lucas sequences and also sequences of Pell numbers are squares or cubes [7 ...

core  

Intrinsic Benchmark Beating

open access: yesJournal of Business Finance &Accounting, Volume 53, Issue 3, Page 1210-1234, June 2026.
ABSTRACT We examine the role of intrinsic motivations—psychologically based, non‐economic factors—in earnings benchmark beating by focusing on owner‐managed firms that are largely free from external pressures from shareholders, analysts, and the media.
Jeppe Christoffersen   +2 more
wiley   +1 more source

Groups of Divisibility

open access: yes, 2020
In this thesis, we examine a part of abstract algebra known as Groups of Divisibility. We construct these special groups from basic concepts. We begin with partially-ordered sets, then build our way into groups, rings, and even structures akin to rings ...
Gerberding, Seth J
core  

Nonapeptide molecular evolution during the adaptive radiation of Tanganyika cichlids

open access: yesJournal of Neuroendocrinology, Volume 38, Issue 6, June 2026.
Abstract Oxytocin (OT) and vasotocin (VT) are evolutionarily conserved nonapeptides that regulate a wide range of physiological and behavioral processes in vertebrates. Their receptor families have undergone gene duplications that facilitated functional diversification throughout vertebrate evolution.
Pol Sorigue   +2 more
wiley   +1 more source

Genomic Insights Into the Evolutionary History of Berardius Beaked Whales: Speciation Driven by Resource Specialization, Gigantism and Thermal Barriers?

open access: yesMolecular Ecology, Volume 35, Issue 12, June 2026.
ABSTRACT Understanding the diversity of our oceans is fundamental now more than ever as climate change and human activities put increasing pressure on marine species and ecosystems. Beaked whales (family Ziphiidae) are among the most poorly understood marine mammals, in part due to their affinity to offshore underwater canyons and prolonged diving ...
Morgan L. McCarthy   +5 more
wiley   +1 more source

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