Saint-Bonnet-près-Riom

Noël Bonnet

mathematical techniques. When the "objects" considered have specific properties, it is possible to envisage (and even to recommend) how to exploit these properties for performing dimensionality reduction. One example of this approach consists in replacing images of centro-symmetric particles by their rotational power spectrum (Crowther and Amos, 1971): the image is split into angular sectors, t...

Syndrome de Maffucci: des enchondromes à surveiller de près

Le syndrome de Maffucci est une affection très rare caractérisée par l'association de chondromes multiples et d'hémangiomatose des parties molles. Les os les plus atteints dans cette affection sont par ordre de fréquence décroissant: les os de la main, les os des pieds, le fémur, les os de la jambe, le bassin, l'humérus et les os de l'avant-bras. Le risque majeur du syndrome de Maffucci reste l...

Fugitive Saint

Angela Verne. (Catholic Printing Company, Farnwort'1' Bolton, Lanes. 18s.) "According to legend, she (St. Dymphna) fled from Ireland to Gheel with the priest Gonerbernus to escape the unholy desire of her own father, a pagan kl0fc of Ireland. The latter, however, discovered their whereabouts and put them ^ death." These stark sentences, which embody all that is known of the patron sain of the f...

The Gauss-bonnet Theorem

The Gauss Bonnet theorem links differential geometry with topology. The following expository piece presents a proof of this theorem, building up all of the necessary topological tools. Important applications of this theorem are discussed.

The Gauss-Bonnet Theorem