Results 71 to 80 of about 325,732 (181)
Towards the Centenary of Sheffer Polynomial Sequences: Old and Recent Results
Mathematics, 2022 Sheffer’s work is about to turn 100 years after its publication. In reporting this important event, we recall some interesting old and recent results, aware of the incompleteness of the wide existing literature. Particularly, we recall Sheffer’s approach,
Francesco Aldo Costabile +2 more
doaj +1 more source
Uncovering correlates of decline and critical refuges for a threatened terrestrial mammal
Conservation Biology, Volume 40, Issue 4, August 2026.Abstract Globally, the geographic ranges of numerous species are contracting. Identifying spatiotemporal patterns of threat impact can illuminate why species decline in some parts of their range but persist in others. We developed a correlative approach to identify species’ response thresholds and locate ecological refuge areas associated with ...
Natalya M. Maitz +5 more
wiley +1 more source
Formal calculus, umbral calculus, and basic axiomatics of vertex algebras:
, 2009 The central subject of this thesis is formal calculus together with certain applications to vertex operator algebras and combinatorics. By formal calculus we mean mainly the formal calculus that has been used to describe vertex operator algebras and ...
Robinson, Thomas J.
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Functional Ecology, Volume 40, Issue 7, Page 1960-1978, July 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Heatwaves are becoming increasingly frequent across the Mediterranean and pose critical challenges for small passerines, yet the physiological and morphological limits to their resilience remain poorly understood.
Erick González‐Medina +6 more
wiley +1 more source
General power umbral calculus in several variables [PDF]
, 1989 In this paper we give a version of multivariate general power umbral calculus with the starting point based on the theory given by S. Roman and A. Brini.
Ueno, Kazuo
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miker83z/umbral-rs: umbral-rs-v0.0.2
, 2022 Rust implementation of Umbral: https://github.com/nucypher ...
Mirko Zichichi
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Two variable higher-order central Fubini polynomials
Journal of Inequalities and Applications, 2019 Recently, the central Fubini polynomials were introduced in connection with central factorial numbers of the second kind. In this paper, we consider two variable higher-order central Fubini polynomials as a ‘central analogue’ of two variable higher-order
Taekyun Kim +3 more
doaj +1 more source
Review of Policy Research, Volume 43, Issue 4, July 2026.ABSTRACT China's poverty alleviation campaign is significant. Over the past four decades, the number of people in China living below the international extreme‐poverty line fell by close to 800 million, accounting for nearly three‐quarters of the global reduction in extreme poverty.
Zhiqi Xu, Wil Hout
wiley +1 more source
Voigt Transform and Umbral Image
Mathematical and Computational Applications, 2020 In this paper, we show that the use of methods of an operational nature, such as umbral calculus, allows achieving a double target: on one side, the study of the Voigt function, which plays a pivotal role in spectroscopic studies and in other ...
Silvia Licciardi +3 more
doaj +1 more source
Functional Ecology, Volume 40, Issue 6, Page 1933-1945, June 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Understanding how local climate patterns select for thermal and drought tolerance traits is needed to predict differential responses to climate change across complex ecosystems.
Caitlin N. Terry +5 more
wiley +1 more source