92,366 research outputs found

    New Upper Bounds for Mathieu-Type Series

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    The Mathieu’s series S(r) was considered firstly by É.L. Mathieu in 1890; its alternating variant Š(r) has been recently introduced by Pogány et al. [Some families of Mathieu a-series and alternating Mathieu a-series, 2006] where various bounds have been established for S, Š. In this note we obtain new upper bounds over S(r), Š(r) with the help of Hardy–Hilbert double integral inequality

    Integral Representation of a Series Which One Includes the Mathieu A-Series

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    AbstractIntegral expression is deduced for the series S(r,μ,ν,a)=∑n=1∞2F1ν−μ+12,ν−μ2+1;ν+1;−r2a(n)2a(n)ν−μ+1(a(n)2+r2)μ−1/2, where r>0, μ>1/2, ν+1<μ and a:0<a(1)<a(2)<⋯<a(n)↑∞, and 2F1 is the Gauß hypergeometric function. The result precizes the integral expression for the generalized Qi type Mathieu a-series S(r,p,a)=∑n=0∞a(n)(a(n)2+r2)−p−1 given in [J. Inequal. Pure Appl. Math. 4 (2003), (4.5)] generalizing some other results by Cerone and Lenard, Tomovski and Qi as well. Bounding inequalities are given for S(r,μ,ν,a) using the derived integral expression

    Torsion units in integral group ring of the Mathieu simple group M22

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    AbstractWe investigate the possible character values of torsion units of the normalized unit group of the integral group ring of the Mathieu sporadic group M22. We confirm the Kimmerle conjecture on prime graphs for this group and specify the partial augmentations for possible counterexamples to the stronger Zassenhaus conjecture.</jats:p

    Properties Of A Localized Mathieu Pulse.

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    An X-shaped localized pulse based on a zero-order Mathieu function is obtained by a proper superposition of Mathieu beams, and some properties are analyzed.21662-

    Fig. 2. – Peperomia robusta G. Mathieu. A in Endemic Peperomia (Piperaceae) novelties from eastern Madagascar

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    Fig. 2. – Peperomia robusta G. Mathieu. A. General habit; B. Detail of node; C. Fruit (lateral view). [A, B: Mathieu 446, BR; C: Mathieu 485, BR] [Drawing: G. Mathieu]Published as part of Mathieu, Guido, 2020, Endemic Peperomia (Piperaceae) novelties from eastern Madagascar, pp. 75-82 in Candollea 75 (1) on page 79, DOI: 10.15553/c2020v751a7, http://zenodo.org/record/572481

    Manuel Mathieu

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    Manuel Mathieu (b. 1986) is a multi-disciplinary artist, working with painting, ceramics and installation. His work investigates themes of historical violence, erasure and cultural approaches to physicality, nature and spiritual legacy. Link to the artist\u27s website.https://egrove.olemiss.edu/art_talks/1014/thumbnail.jp

    Fig. 1. – Peperomia irrasa G. Mathieu. A in Endemic Peperomia (Piperaceae) novelties from eastern Madagascar

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    Fig. 1. – Peperomia irrasa G. Mathieu. A. General habit; B. Detail of node; C. Detail of leaf apex. [Humbert 24638, BR, P] [Drawing: G. Mathieu]Published as part of Mathieu, Guido, 2020, Endemic Peperomia (Piperaceae) novelties from eastern Madagascar, pp. 75-82 in Candollea 75 (1) on page 77, DOI: 10.15553/c2020v751a7, http://zenodo.org/record/572481

    Entretien avec Mathieu Triclot

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    peer reviewedEntretien avec Mathieu Triclot sur les relations, influences et motifs partagés entre la science-fiction et le jeu vidéo
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