Results 61 to 70 of about 1,736,628 (188)

Repdigits as Products of Consecutive Pell or Pell–Lucas Numbers

Iranian Journal of Mathematical Sciences and Informatics
Summary: A positive integer is called a repdigit if it has only one distinct digit in its decimal expansion. In this paper, we find all repdigits that are products of consecutive Pell or Pell-Lucas numbers. This paper continues previous work which dealt with finding occurrences of repdigits in the Pell and Pell-Lucas sequences.
Bravo, Eric F., Bravo, Jhon J.
openaire   +2 more sources

Fishing shapes cetacean population density patterns in the Mediterranean basin

Ecography, Volume 2025, Issue 12, December 2025.
Human impacts are forcing species towards marginal and suboptimal portions of their historical ranges. Cetaceans are now under protection, but are still threatened by fishing activities, which reduce fish stocks, alter their feeding behavior, and can cause mortality due to bycatch.
Davide Fundaro', Carlotta Vivaldi, Luca Santini   +2 more
wiley   +1 more source

Serendipity or strategy? The college housing search and inequality

Sociological Forum, Volume 40, Issue 4, Page 481-496, December 2025.
Abstract Housing arrangements provide the foundation for social life and interaction in college. However, we know little about how students locate housing opportunities. This study contributes to the literature on housing, search strategies, and class inequality during college by examining how students search for housing.
Virginia Riel, Olivia G. Ball
wiley   +1 more source

Distributional justice and climate risk assessment: An analysis of disparities within direct and indirect risk

Risk Analysis, Volume 45, Issue 11, Page 3354-3374, November 2025.
Abstract Climate change and natural hazard risk assessments often overlook indirect impacts, leading to a limited understanding of the full extent of risk and the disparities in its distribution across populations. This study investigates distributional justice in natural hazard impacts, exploring its critical implications for environmental justice ...
M. J. Anderson, L. Conrow, M. Hobbs, R. Paulik, P. Blackett, T. Logan   +5 more
wiley   +1 more source

Norms Of Hankel-Hessenberg and Toeplitz-Hessenberg Matrices Involving Pell and Pell-Lucas Numbers [PDF]

, 2016
We derive some sum formulas for the squares of Pell and Pell-Lucas numbers. We construct Hankel-Hessenberg andToeplitz-Hessenberg matrices whose entries in the first column are HHP = aij , ij i j a P = ; Q HH =   ij a , ij i j a Q =and ...
GÖKBAS, Hasan
core   +1 more source

Novel Classes on Generating Functions of the Products of (p,q)-Modified Pell Numbers with Several Bivariate Polynomials

Mathematics
In this paper, using the symmetrizing operator δe1e22−l, we derive new generating functions of the products of p,q-modified Pell numbers with various bivariate polynomials, including Mersenne and Mersenne Lucas polynomials, Fibonacci and Lucas ...
Ali Boussayoud, Salah Boulaaras, Ali Allahem   +2 more
doaj   +1 more source

History Roundtable on US Universities and the State: Episodes from the Twentieth Century

History, Volume 110, Issue 392, Page 546-559, September 2025.
Abstract This roundtable explores four historical episodes in the history of state–university relations in the United States. In doing so, it addresses issues that also figure prominently in present‐day debates, including questions of academic freedom and free speech, the state's role in research funding as well as the international features of higher ...
Kate Ballantyne, Tomás Irish, Charlotte Lerg, Christopher P. Loss, Daniel Laqua   +4 more
wiley   +1 more source

On the Balancing-bilinear system of difference equations: solutions via some number sequences and global stability

Miskolc Mathematical Notes
In the current paper, we present a new class of systems called the Balancing-bilinear system of difference equations to investigate some theoretical proprieties.
Ahmed Ghezal, Imane Zemmouri
doaj   +1 more source

How effective are behavioral interventions to increase the take‐up of social benefits? A systematic review of field experiments

Journal of Policy Analysis and Management, Volume 44, Issue 3, Page 997-1059, Summer 2025.
Abstract Non‐take‐up of social benefits is a significant policy issue caused by factors such as lack of awareness, compliance costs, and stigma. While public information campaigns, default options, and in‐person assistance are increasingly used, their effectiveness remains poorly understood.
Pierre‐Marc Daigneault, Mathieu Ouimet, Alexandre Fortier‐Chouinard, Eriole Zita Nonki Tadida, Antoine Baby‐Bouchard   +4 more
wiley   +1 more source

Subordination Properties of Bi‐Univalent Functions Involving Horadam Polynomials

Journal of Function Spaces, Volume 2025, Issue 1, 2025.
In this research, we investigate a family of q‐extensions defined on an open unit disk, which is based on bi‐univalent functions associated with differential subordination. Next, we define certain classes of bi‐univalent functions using generalized Horadam polynomials.
Ebrahim Amini, Shrideh Al-Omari, Abdul Rauf Khan   +2 more
wiley   +1 more source