Results 21 to 30 of about 2,199 (127)

Thinking over the Goldbach conjecture solution from a probabilistic point of view

Ratio Mathematica
This paper aims to provide a set of considerations that allow us to see a possible solution to the problematic issue of Goldbach's "strong" conjecture, which amounts to asserting that any even natural number greater than 2 can be written as the sum of ...
Rosario D'Amico
doaj   +1 more source

Distinct Foliar Uptake Pathways for Phosphorus and Nano‐Hydroxyapatite in Potato Revealed By Synchrotron μCT and ³³P Imaging

Plant, Cell &Environment, EarlyView.
ABSTRACT Potato (Solanum tuberosum L.) has a high phosphorus (P) requirement, yet its shallow root system and the strong P‐fixing capacity of many soils limit the effectiveness of soil fertilisation. Foliar application of nano‐hydroxyapatite particles (nHAPs) has emerged as a promising alternative P fertilisation practice.
Max Frank, Stine Le Tougaard, Augusta Szameitat, Emil Visby Kristensen, Daniel P. Persson, Rajmund Mokso, Søren Husted   +6 more
wiley   +1 more source

On Alternating and Symmetric Groups Which Are Quasi OD-Characterizable

, 2017
Let $\Gamma(G)$ be the prime graph associated with a finite group $G$ and $D(G)$ be the degree pattern of $G$. A finite group $G$ is said to be $k$-fold OD-characterizable if there exist exactly $k$ non-isomorphic groups $H$ such that $|H|=|G|$ and $D(H)=
Moghaddamfar, Ali Reza
core   +1 more source

Random Diophantine equations in the primes

Mathematika, Volume 72, Issue 3, July 2026.
Abstract We consider equations of the form a1x1k+⋯+asxsk=0$a_{1}x_{1}^{k}+\cdots +a_{s}x_{s}^{k}=0$ where the variables xi$x_{i}$ are all taken to be primes. We define an analogue of the Hasse principle for solubility in the primes (which we call the prime Hasse principle), and prove that, whenever k⩾2$k\geqslant 2$, s⩾3k+2$s\geqslant 3k+2$, this holds
Philippa Holdridge
wiley   +1 more source

Milestones, revisited: Iterative and nonlinear identity development in Gen‐Z

Journal of Research on Adolescence, Volume 36, Issue 2, June 2026.
Abstract This study examined how sexual and gender identity development experiences, commonly operationalized as “milestones,” were navigated by Gen‐Z LGBTQ+ young people. Using a life‐history calendar approach, milestone‐related experiences were treated as heuristic sites of meaning‐making rather than fixed developmental benchmarks.
William Warton, Olivia Bruce, David Moseley, Michelle L. Byrne, Kelly‐Ann Allen, Ainsley Hughes, Beth P. Johnson   +6 more
wiley   +1 more source

A meta‐analysis of sexual orientation inequities in substance use among youth

Addiction, Volume 121, Issue 5, Page 1048-1063, May 2026.
Abstract Background and Aims Sexual minority youth report significantly higher rates of substance use than heterosexual youth, yet a comprehensive and systematic evaluation and synthesis of the magnitude of this inequity has not been conducted. The purpose of this study was to conduct a meta‐analysis to assess the magnitude of overall inequities in ...
Ethan H. Mereish, Hyemin Lee, Jeremy T. Goldbach, Sophie Hathaway, Emily A. Hennessy   +4 more
wiley   +1 more source

Substance use and sexual orientation among adolescents: Differences by age group and sex in the 2023 National Survey of Drug Use and Health

The American Journal on Addictions, Volume 35, Issue 3, Page 396-403, May 2026.
Abstract Background and Objectives Adolescent substance use is a critical public health concern with significant long‐term consequences, yet research on disparities by sexual orientation remains limited. Despite the unique stressors faced by sexual minority youth—particularly bisexual individuals—that increase their risk for substance use, most studies
Timothy J. Grigsby, Rachel Hoopsick, Dylan Barker, Elise Devier, Amber Amis, R. Andrew Yockey   +5 more
wiley   +1 more source

Reversing Lanmodulin's Metal‐Binding Sequence in Short Peptides Surprisingly Increases the Lanthanide Affinity

Angewandte Chemie, Volume 137, Issue 46, November 10, 2025.
Accidentally reversing the lanthanide‐binding sequences of lanmodulin‐inspired short peptides lead to the serendipitous discovery of a set of peptides with a one order of magnitude higher lanthanide‐binding affinity than the uncapped peptides synthesised in the correct direction.
Sophie M. Gutenthaler‐Tietze, Jerome Kretzschmar, Satoru Tsushima, Robin Steudtner, Björn Drobot, Lena J. Daumann   +5 more
wiley   +2 more sources

Excel and the Goldbach Comet

Spreadsheets in Education, 2007
This article shows ways in which Excel can be used to explore the Goldbach Conjecture. We first show an elementary approach in which the Goldbach Comet is constructed by means of a table of values.
John Baker
doaj  

the Transformation of Sieve Function

, 2020
In this paper, we will introduce the transformation of sieve function to improve sieve method. The sieve function can be transformed to similar sieve function and keep its value constant.
Han, Jinzhu
core