Results 51 to 60 of about 144 (134)
Uncovering correlates of decline and critical refuges for a threatened terrestrial mammal
Conservation Biology, EarlyView.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
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
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
Umbral calculus in positive characteristic
Advances in Applied Mathematics, 2005 An umbral calculus over local fields of positive characteristic is developed on the basis of a relation of binomial type satisfied by the Carlitz polynomials. Orthonormal bases in the space of continuous $\mathbb F_q$-linear functions are constructed.
openaire +2 more sources
Defining and identifying relevant stakeholders to advance effective conservation
Conservation Biology, Volume 40, Issue 3, June 2026.The challenge of defining stakeholders in environmental science and an approach for refining existing definitions. Abstract Stakeholder is a contested term that has spawned a multitude of ad hoc definitions. The ambiguity of these definitions has oftentimes impeded transdisciplinary research in environmental governance and conservation science because ...
Milan Büscher +5 more
wiley +1 more source
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
An infinite dimensional umbral calculus [PDF]
Journal of Functional Analysis, 2019 The aim of this paper is to develop foundations of umbral calculus on the space $\mathcal D'$ of distributions on $\mathbb R^d$, which leads to a general theory of Sheffer polynomial sequences on $\mathcal D'$. We define a sequence of monic polynomials on $\mathcal D'$, a polynomial sequence of binomial type, and a Sheffer sequence.
Dmitri Finkelshtein +3 more
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Politics &Policy, Volume 54, Issue 3, June 2026.ABSTRACT In the 2023 November election, Ohioans voted in favor of Issue 2—the Marijuana Legalization Initiative. The successful passing of this initiative at the ballot box made Ohio the 24th state and largest Republican voting state to adopt a recreational adult‐use marijuana policy. Issue 2 was voted in favor of by a margin of 57% to 43%.
Gideon Cunningham +2 more
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
Journal of Mathematical Analysis and Applications, 1981 AbstractAn algebraic setting for the Roman-Rota umbral calculus is introduced. It is shown how many of the umbral calculus results follow simply by introducing a comultiplication map and requiring it to be an algebra map. The same approach is used to construct a q-umbral calculus.
Ihrig, Edwin C, Ismail, Mourad E.H
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