Results 71 to 80 of about 1,081 (189)

The (exponential)

Arab Journal of Mathematical Sciences, 2014
We establish some formulas relating multipartitional polynomials to multinomial polynomials. They appear, respectively, as a natural extension of Bell polynomials and of polynomials of binomial type.
Miloud Mihoubi, Hacène Belbachir
doaj   +1 more source

Host Detection by Cuckoo Bumblebees: Choice Experiments Reveal Non‐Visual Cues Support Host Detection, but Accuracy Is Low

Entomologia Experimentalis et Applicata, EarlyView.
Female Bombus vestalis cuckoo bumblebees were introduced to a flight arena containing four identical opaque boxes, featuring slits to release volatiles from the bumblebees inside. When only one box contained a developing host colony, the cuckoos were able to locate their hosts among the four boxes with 66.2% accuracy.
Sofia Dartnell, Hamish Symington, Lynn V. Dicks   +2 more
wiley   +1 more source

Appraisal of Six Natural Mica Reference Materials for In Situ Rb‐Sr Geochronology

Geostandards and Geoanalytical Research, EarlyView.
Key Points Evaluated six natural mica reference materials for in situ LA‐ICP‐MS/MS Rb‐Sr geochronology using geochemical, microstructural and isotopic characterisation. Identified robust primary reference materials: Mount Dromedary biotite (99.37 Ma) and Mica‐Fe biotite (307.75 Ma). La Posta biotite and Högsbo muscovite are suitable secondary reference
Hugo K.H. Olierook, Bruno V. Ribeiro, Janne Liebmann, Kai Rankenburg, Fred Jourdan, Ahmad Redaa, Jarred C. Lloyd, Thomas M. Belgrano, Carlos R. Corella Santa Cruz, Yujin Jegal, Julien Mercadier, Catherine Zimmermann, Jie Yu, Andreas Zametzer, Christopher L. Kirkland, Sarah E. Gilbert, Craig D. Storey, Luc S. Doucet, Isabelle Jones, Louisa Stokes, Thomas Zack, Delia Rösel, Denis Fougerouse, Jonas Kaempf, Priyanjan Datta, Hijas Hameed, Noreen J. Evans, Malcolm P. Roberts, Juraj Farkas, Stijn Glorie, Celia Mayers, R. Adam Frew, Sarah Al Odeh, Chloe E. Roche, Massimo Chiaradia, Alicia M. Cruz‐Uribe, Alan S. Collins, Andreas Karlsson, Anusha Shantha Kumara   +38 more
wiley   +1 more source

Exploring Extended Degenerate Bell-Based Appell Polynomials via Fractional Operators: Properties, Determinant Representations, and Numerical Illustrations

Mathematics
This paper introduces a new family of extended degenerate Bell-based Appell polynomials by applying Euler’s integral as a fractional operator to the Appell-type degenerate Bell polynomials.
Mohra Zayed, Ines Ben Omrane, Francesco Aldo Costabile, Mdi Begum Jeelani, Shahid Ahmad Wani   +4 more
doaj   +1 more source

Identities on Bell polynomials and Sheffer sequences

Discrete Mathematics, 2009
The paper gives two new characterizations of Sheffer sequences in terms of exponential partial Bell polynomials. This yields connection between Sheffer sequences and Riordan arrays. Several general identities are established for Bell polynomials and Sheffer sequences, which specialize to elegant identities for associated sequences and cross sequences.
Weiping Wang 0004, Tian-ming Wang
openaire   +3 more sources

Efficient heuristics for the Steiner forest problem

International Transactions in Operational Research, EarlyView.
Abstract Let G=(V,E)$G = (V, E)$ be a connected undirected graph, V$V$ a set of nodes, E$E$ a set of edges, |V|=n$|V| = n$, and |E|=m$|E| = m$. Given a non‐negative weight function w:E→R+$w: E \rightarrow \mathbb {R}^+$ associated with its edges, a set τ={Ti⊆V|i=1,…,p}$\tau = \lbrace T_i \subseteq V | i = 1, \ldots, p\rbrace$ of terminal sets Ti$T_i ...
Murilo Stockinger, Isabel Rosseti, Simone Martins, Luidi Simonetti, Alexandre Plastino   +4 more
wiley   +1 more source

Solving Bratu equations using Bell polynomials and successive differentiation [PDF]

Iranian Journal of Numerical Analysis and Optimization
This paper uses transformations and recursive algebraic equations to obtain series expansions, utilizing Bell polynomials, to solve the one-dimensional Bratu problem and several Bratu-type equations.
N.A. Gezer
doaj   +1 more source

A theorem relating potential and bell polynomials

Discrete Mathematics, 1982
AbstractWe define the potential polynomial F(z)k and the exponential Bell polynomial Bn,j (0,...,0, ƒrƒr+1,...) and we prove a theorem relating the two. Though not well-known, the theorem has many applications, some of which we discuss in this paper.
openaire   +3 more sources

Welfare Impacts of Agricultural Technology‐Utilization Regimes Among Rice Farmers in the Anchor Borrowers' Program in Southwest Nigeria

Review of Development Economics, EarlyView.
ABSTRACT Agricultural development interventions increasingly promote multiple technologies, yet farmers may utilize them differently, with uncertain implications for welfare. This study assesses whether alternative agricultural technology‐utilization regimes generate similar outcomes among rice farmers benefiting from the Anchor Borrowers' Program (ABP)
Osayi Precious Emokpae, Victor Olusegun Okoruwa, Edeoba William Edobor, Ogheneruemu Obi‐Egbedi, Fatai Abiola Sowunmi   +4 more
wiley   +1 more source

Relations among Bell polynomials, central factorial numbers, and central Bell polynomials

Mathematical Sciences and Applications E-Notes, 2019
In the note, by virtue of the Fa\`a di Bruno formula and two identities for the Bell polynomials of the second kind, the authors derive three relations among the Bell polynomials, central factorial numbers of the second kind, and central Bell polynomials.
Feng Qi, Bai-Ni Guo
openaire   +3 more sources