Deux Articles Espagnols du Prof. Francisco López Estrada

Deux espèces nouvelles de puces (Siphonaptera : Ctenophthalmidae & Rhopalopsyllidae) du Chili

Agastopsylla guzmani n. sp. (Ctenophthalmidae) and Delostichus degus n. sp. (Rhopalopsyllidae) are described. A key is proposed for the genus Agastopsylla; for the genus Delostichus, a brief comparison is made with D. incisus and D. ojedai described after the issue of the Catalogue of Smit (1987).

La cytostéatonécrose du nouveau-né: à propos de deux observations

La cytostéatonécrose est une lésion de survenue rare dont la pathogénie est incomplètement connue. Elle se présente sous la forme de placards cutanés indurés et violacés sur peau claire ou hyperchromiques sur peau noire, localisés souvent au niveau de la face, du tronc, des fesses et de la racine des membres. Probablement due à une anomalie des tissus graisseux: trouble du métabolisme des grais...

Estrada and L-Estrada Indices of Edge-Independent Random Graphs

Let G be a simple graph of order n with eigenvalues λ1, λ2, · · · , λn and normalized Laplacian eigenvalues μ1,μ2, · · · ,μn. The Estrada index and normalized Laplacian Estrada index are defined as EE(G) = ∑n k=1 e λk and LEE(G) = ∑n k=1 e μk−1, respectively. We establish upper and lower bounds to EE and LEE for edge-independent random graphs, containing the classical Erdös-Rényi graphs as spec...

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Laplacian Estrada and Normalized Laplacian Estrada Indices of Evolving Graphs

Large-scale time-evolving networks have been generated by many natural and technological applications, posing challenges for computation and modeling. Thus, it is of theoretical and practical significance to probe mathematical tools tailored for evolving networks. In this paper, on top of the dynamic Estrada index, we study the dynamic Laplacian Estrada index and the dynamic normalized Laplacia...