Results 51 to 60 of about 30,307 (185)

Simplifying coefficients in differential equations associated with higher order Bernoulli numbers of the second kind

AIMS Mathematics, 2019
In the paper, by virtue of the Faà di Bruno formula, some properties of the Bell polynomials of the second kind, and an inversion formula for the Stirling numbers of the first and second kinds, the authors establish meaningfully and significantly two ...
Feng Qi, Da-Wei Niu, Bai-Ni Guo
doaj   +1 more source

Derivatives of tangent function and tangent numbers

, 2015
In the paper, by induction, the Fa\`a di Bruno formula, and some techniques in the theory of complex functions, the author finds explicit formulas for higher order derivatives of the tangent and cotangent functions as well as powers of the sine and ...
Bourbaki, Boyadzhiev, Comtet, Daboul, Dominici, Feng Qi, Guo, Guo, Guo, Guo, Guo, Guo, Guo, Guo, Hoffman, Hoffman, Luo, Luo, Ma, Ma, Ma, Qi, Qi, Qi, Qi, Qi, Qi, Qi, Qi, Qi, Qi, Qi, Remmert, Schwatt, Schwatt, Wei, Xu, Zhang   +37 more
core   +1 more source

Modeling the Spatial Interplay Between Migration and Environmental Conditions

Environmetrics, Volume 37, Issue 1, January 2026.
ABSTRACT The measurement and modeling of migration patterns and potential drivers are often limited by the quality of spatial data at local levels. Our aim is to address these constraints by advantaging of consolidated techniques in geospatial regression and emerging machine‐learning approaches to explore how selected contextual socio‐economic and ...
Daniela Ghio, Sarah Hoyos‐Hoyos, Gavin Liu, Emmanuel Kyeremeh, Robert McLeman, Gabby Resch, Ali Mazalek   +6 more
wiley   +1 more source

Woodland proximity limits benefits of conservation land management for farmland breeding waders

Journal of Applied Ecology, Volume 63, Issue 1, January 2026.
Where grassland breeding wader assemblages may be put at risk by tree planting, buffer zones >500 m should be implemented to mitigate the negative effect on wader species, with further distances having the greatest benefits. Equally, the benefits of conservation measures for breeding waders will be reduced within similar proximities to existing ...
Emma J. Sheard, Kirsty J. Park, Des B. A. Thompson, Jeremy D. Wilson   +3 more
wiley   +1 more source

Poly-central factorial sequences and poly-central-Bell polynomials

Advances in Difference Equations, 2021
In this paper, we introduce poly-central factorial sequences and poly-central Bell polynomials arising from the polyexponential functions, reducing them to central factorials and central Bell polynomials of the second kind respectively when k = 1 $k = 1$
Hye Kyung Kim, Taekyun Kim
doaj   +1 more source

From Pirates to Professionals: Retaining a Sense of Integration During Venture Scaling

British Journal of Management, Volume 37, Issue 1, January 2026.
Abstract Our paper explains how organizations can build and sustain internal member identification during rapidly scaling transitions. Using a longitudinal case study of a UK scaling firm, we show how organizational members follow a recursive process of retaining and forgoing the past and foreseeing the future to create a transitional organizational ...
Graeme Martin, Stephen Knox, Norin Arshed   +2 more
wiley   +1 more source

Combinatorial enumeration of weighted Catalan numbers [PDF]

, 2010
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mathematics, 2010.Cataloged from PDF version of thesis.Includes bibliographical references (p.
An, Junkyu
core  

Dobinski-type relations: Some properties and physical applications

, 2005
We introduce a generalization of the Dobinski relation through which we define a family of Bell-type numbers and polynomials. For all these sequences we find the weight function of the moment problem and give their generating functions.
A Horzela, A I Solomon, Akhiezer N I, Bell E T, Bell E T, Bender C M, Blasiak P, Comtet L, Dobiński G, K A Penson, Katriel J, Klauder J R, Louisell W H, Navon A M, P Blasiak, Penson K A, Penson K A, Penson K A Solomon A I, Rota G-C, Solomon A I Blasiak P Duchamp G Horzela A Penson K A, Solomon A I Duchamp G H E Blasiak P Horzela A Penson K A, Varvak A, Wilf H S   +22 more
core   +1 more source

Several series expansions for real powers and several formulas for partial Bell polynomials of sinc and sinhc functions in terms of central factorial and Stirling numbers of second kind [PDF]

, 2022
Feng Qi, Peter J. Taylor
openalex   +1 more source

Localized and Transient Oxygenation of Shallow Oceans of Southwestern Laurentia at the Ediacaran–Cambrian Boundary

Geobiology, Volume 24, Issue 1, January/February 2026.
ABSTRACT The Ediacaran–Cambrian boundary, which precedes one of the most significant biotic diversification events in Earth's history, is associated with a global negative carbon isotope excursion termed the BAsal Cambrian carbon isotope Excursion (BACE).
Watsawan Chanchai, Lyle L. Nelson, Emily F. Smith, Dalton S. Hardisty, Mary C. Lonsdale, Janet E. Burke, Kimberly V. Lau   +6 more
wiley   +1 more source