Results 41 to 50 of about 166,162,676 (139)
The legacy of the Cartwright–Littlewood collaboration
Journal of the London Mathematical Society, Volume 113, Issue 1, January 2026.Abstract Mary L. Cartwright and John E. Littlewood published a short “preliminary survey” in 1945 describing results of their investigation of the forced van der Pol equation ÿ−k(1−y2)ẏ+y=bλkcos(λt+a)$$\begin{equation*} \ddot{y}-k(1-y^2)\dot{y}+y = b \lambda k \cos (\lambda t+a) \end{equation*}$$in which b,λ,k,a$b,\lambda,k,a$ are parameters with k$k$
John Guckenheimer
wiley +1 more source
Gastroenterology Research and Practice, Volume 2026, Issue 1, 2026.Background Helicobacter pylori (H. pylori) eradication in penicillin‐allergic patients poses a challenge. The currently recommended regimens are inadequate for clinical eradication therapy. Recent years have seen reports of new drugs, regimens, and study evidence in this field; yet comprehensive review articles on the treatment of H.
Yuxin Zhang +11 more
wiley +1 more source
Nonstandard Work and Child Care Choices of Married Mothers [PDF]
The focus of this paper is to examine the interplay between nonstandard employment and child care choice decisions of married mothers with young children.
Lisa Powell, Jean Kimmel
core
Transfer Principles in Nonstandard Intuitionistic Arithmetic
, 2018 Jeremey Avigad and Jeffery Helzner.
Jeffrey Helzner (5372678) +1 more
core +1 more source
International Journal of Intelligent Systems, Volume 2026, Issue 1, 2026.Resource‐constrained embedded devices require specialized optimization strategies to achieve reliable real‐time keyword spotting performance. This work presents a comprehensive implementation framework for deploying quantized convolutional neural networks on the ESP32‐S3‐EYE development board, achieving practical capabilities within severe memory and ...
Patrik Medur, Mart Lubbers, Goran Mauša
wiley +1 more source
Nonstandard Foundations of Equilibrium Search Models [PDF]
We develop an equilibrium sequential search model which includes most of the literature as special cases. In particular, the model can accommodate heterogeneity in buyers’ search costs and demand functions and firms’ cost functions, with general demand ...
Michael T. Rauh
core
Diophantine correct models of arithmetic
, 1979 A countable nonstandard model of arithmetic is diophantine correct if and only if it can be embedded in arbitrarily short nonstandard initial segments of itself.
L. Lipshitz
core +1 more source
Natural and formal infinities [PDF]
, 2001 Concepts of infinity usually arise by reflecting on finite experiences and imagining them extended to the infinite. This paper will refer to such personal conception as natural infinities.Research has shown that individuals' natural conceptions of ...
David Tall, Tall, David
core +1 more source
An Effective Conservation Result for Nonstandard Arithmetic
, 1999 We prove that a nonstandard extension of arithmetic is effectively conservative over Peano arithmetic by using an internal version of a definable ultrapower.
Erik Palmgren
core
Satisfaction classes in nonstandard models of first-order arithmetic
, 2002 A satisfaction class is a set of nonstandard sentences respecting Tarski's truth definition. We are mainly interested in full satisfaction classes, i.e., satisfaction classes which decides all nonstandard sentences. Kotlarski, Krajewski and Lachlan proved in 1981 that a countable model of PA admits a satisfaction class if and only if it is recursively ...
openaire +2 more sources