Results 41 to 50 of about 704,679 (196)

Relation-changing modal operators [PDF]

open access: yes, 2015
We study dynamic modal operators that can change the accessibility relation of a model during the evaluation of a formula. In particular, we extend the basic modal language with modalities that are able to delete, add or swap an edge between pairs of ...
Areces, Carlos Eduardo   +2 more
core   +2 more sources

Sensitivity and Hamming Graphs

open access: yesJournal of Graph Theory, EarlyView.
ABSTRACT For any m ≥ 3 $m\ge 3$ we show that the Hamming graph H ( n , m ) $H(n,m)$ admits an imbalanced partition into m $m$ sets, each inducing a subgraph of low maximum degree. This improves previous results by Tandya and by Potechin and Tsang, and disproves the Strong m $m$‐ary Sensitivity Conjecture of Asensio, García‐Marco, and Knauer.
Sara Asensio   +3 more
wiley   +1 more source

Formulas for the Euler-Mascheroni constant [PDF]

open access: yes, 2009
We give several integral representation for the Euler- Mascheroni constant using a combinatorial identity for sum_{n=1}^N 1/(n+x)(n+y). The derivation fo this combinatorial identity is done in an elementary way.Fil: Panzone, Pablo Andres.
Panzone, Pablo Andres
core   +1 more source

Assessing Past and Future Temperature‐ and Precipitation‐Based Indicators in the Republic of Yemen

open access: yesInternational Journal of Climatology, EarlyView.
For the first time in the literature, this work assesses the past and future climatic trends over Yemen, a highly vulnerable country for which science‐based, high‐quality information for the development of climate change adaptation plans was not available until now.
Jorge Alvar‐Beltrán   +5 more
wiley   +1 more source

A note on the continuability of solutions of a perturbed second order nonlinear differential equation of lienard type [PDF]

open access: yes, 2015
In this note we study the continuability of the solutions of a Liénard type equation with forcing term under suitable assumptions.Fil: Napoles Valdes, Juan Eduardo. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas y Naturales y Agrimensura.
Guzmán, Paulo Matias   +2 more
core  

Random series in Lp(X, Σ,μ) using unconditional basic sequences and lp stable sequences: A result on almost sure almost everywhere convergence [PDF]

open access: yes, 2007
Here we study the almost sure almost everywhere convergence of random series of the form Σ∞ i=1αifi in the Lebesgue spaces L p(X, Σ,μ), where the ai's are centered random variables, and the fi's constitute an unconditional basic sequence or an lp stable ...
Cernuschi Frias, Bruno   +1 more
core   +1 more source

Non‐Stationary Dry‐Spell Hazard Probabilities for Spain

open access: yesInternational Journal of Climatology, EarlyView.
This study assesses long‐term changes in dry‐spell hazard probabilities across Spain (1961–2024) using a novel non‐stationary extreme value framework applied to daily precipitation records from a dense observational network. Results show that dry‐spell duration and associated return levels are dominantly stationary, with non‐stationary models providing
S. M. Vicente‐Serrano   +13 more
wiley   +1 more source

Ensino de estatística no Ensino Médio: uma proposta interdisciplinar entre matemática e educação física

open access: yesEm Teia, 2019
Este artigo tem como objetivo analisar as contribuições de uma Sequência de Ensino interdisciplinar, envolvendo as disciplinas de Matemática e Educação Física, para o ensino e a aprendizagem de Estatística no Ensino Médio.
Felipe Antonio Machado Fagundes Gonçalves   +3 more
doaj   +1 more source

The obstacle problem for the infinity fractional laplacian [PDF]

open access: yes, 2016
Given g an α-H¨older continuous function defined on the boundary of a bounded domain Ω and given ψ a continuous obstacle defined in Ω, in this article, we find u an α-H¨older extension of g in Ω with u ≥ ψ.
Moreno Mérida, Lourdes   +1 more
core   +1 more source

Multimode Phonon Lasing via Self‐Induced Optical Coherent Pumping

open access: yesLaser &Photonics Reviews, EarlyView.
A silicon optomechanical nanobeam generates self‐sustained phonon lasing in multiple competing mechanical modes via self‐pulsing, an intrinsic optical modulation arising from cavity nonlinearity. This self‐organized mechanism enables robust multi‐frequency operation spanning periodic, quasi‐periodic, and chaotic regimes without external modulation. The
David Alonso Tomás   +5 more
wiley   +1 more source

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