Results 61 to 70 of about 137,282 (201)

A lemma in transcendental number theory [PDF]

open access: yesTransactions of the American Mathematical Society, 1969
"LEMMA. Suppose p, q, p > qY, r, r, are positive rational integers, e> 0 and y are fixed, and all the numbers a1, aM2, ..., 9 'Mq, as well as the numbers P12, 2 . .P Pr are distinct and arranged in order of increasing absolute values, in other words, lakl _I lak+1I and |Pk| _ jIk+11. We set Ia,qI =,a, I PrI =P and suppose that there exist constants yo >
openaire   +1 more source

Analysis of a Novel Time‐Continuous Dimer Growth Model Describing One Possible Cause of Alzheimer's Disease and a Time‐Discretization for Its Numerical Simulation

open access: yesMathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT Because oligomers of the amyloid‐β$$ \beta $$ (Aβ$$ A\beta $$) protein can possibly be regarded as one main cause for progressive development of Alzheimer's disease, different mathematical models for its emergence have been proposed by different scientific groups.
Benjamin Wacker
wiley   +1 more source

An explicit solution for calculating optimum spawning stock size from Ricker’s stock recruitment model [PDF]

open access: yesPeerJ, 2016
Stock-recruitment models have been used for decades in fisheries management as a means of formalizing the expected number of offspring that recruit to a fishery based on the number of parents.
Mark D. Scheuerell
doaj   +2 more sources

On the Powers of Some Transcendental Numbers [PDF]

open access: yesBulletin of the Australian Mathematical Society, 2007
We construct a transcendental number α whose powers αn!,n= 1, 2, 3,…, modulo 1 are everywhere dense in the interval [0, 1]. Similarly, for any sequence of positive numbers δ = (δn)∞n=1, we find a transcendental number α = α(δ) such that the inequality {αn} < δnholds for infinitely manyn∈ N, no matter how fast the sequence δ converges to zero ...
openaire   +1 more source

Curious Continued Fractions, Nonlinear Recurrences and Transcendental Numbers [PDF]

open access: yes, 2015
We consider a family of integer sequences generated by nonlinear recurrences of the second order, which have the curious property that the terms of the sequence, and integer multiples of the ratios of successive terms (which are also integers), appear ...
Hone, Andrew N.W.
core   +1 more source

The soul of the soil: Unearthing a Nation's eco‐empathy through 1200 years of Persian poetry

open access: yesPeople and Nature, EarlyView.
Abstract Cultivating a profound sense of connection with the natural world, conceptualized as eco‐empathy, is increasingly recognized as a vital precursor to effective environmental stewardship. While scientific data frame ecological crises, literary traditions offer a unique archive for tracing the history of this empathetic bond. This study positions
Isa Esfandiarpour‐Boroujeni   +7 more
wiley   +1 more source

Ultra‐Thin Bipoly Solar Cells With Front Selective n$$ n $$‐Type TOPCon and Rear Blanket p$$ p $$‐Type TOPCon Layers

open access: yesProgress in Photovoltaics: Research and Applications, EarlyView.
Large area crystalline silicon solar cells fabricated on ultra‐thin (80 μ$$ \upmu $$m) Si wafer featuring polysilicon‐based passivating contacts on both sides can further increase the energy output per unit weight. In this work, the large area, screen‐printed solar cells with high temperature fire‐through contacts, yielded an exceptional efficiency‐to ...
Yuchi Lan   +5 more
wiley   +1 more source

Multiplicative processes as a source of fat-tail distributions

open access: yesHeliyon, 2020
Many works in the literature are in favour of the universality of power-laws. However, more recently, a significant amount of research has exposed more subtle details about this subject.
Fabio G. Guerrero, Angel Garcia-Baños
doaj   +1 more source

Teaching Enjoyment and Vitality as Mediators of Cognitive Flexibility and Reflective Teaching in EFL Teachers: A Mixed‐Methods Serial Mediation Analysis

open access: yesTESOL Quarterly, EarlyView.
Abstract Reflective teaching (RT) is influenced by a range of cognitive, pedagogical, and psycho‐affective factors in second/foreign language (L2) education. However, empirical evidence on the influence of psycho‐affective variables on teachers' reflectivity remains limited.
Lili Qin   +2 more
wiley   +1 more source

Hopf Algebras and Transcendental Numbers [PDF]

open access: yes, 2008
In dealing with multiple zeta values, the main diophantine challenge is to prove that known dependence relations among them suffice to deduce all algebraic relations. One tool which should be relevant is the structure of Hopf Algebras, which occurs in several disguises in this context.
openaire   +2 more sources

Home - About - Disclaimer - Privacy