Michel Boileau

Qu'est-ce qui est bien ou mal ? Les r ponses fusent, contradictoires, selon les cultures, les croyances et les int r ts. Face cette cacophonie morale, le relativisme semble s'imposer. Et pourtant... Il existerait un fondement objectif et universel la moralit . travers une r flexion rigoureuse, dans un langage clair et accessible, l'auteur explore les liens entre objectivit , r alit et v rit et d montre que les cons quences concr tes des comportements humains sur la sant physique et mentale sont la cl pour distinguer le bien du mal. Un essai profond ment actuel, l'heure o repenser les rep res thiques n'a jamais t aussi essentiel.

Presenting some impressive recent achievements in differential geometry and topology, this volume focuses on results obtained using techniques based on Ricci flow. These ideas are at the core of the study of differentiable manifolds. Several very important open problems and conjectures come from this area and the techniques described herein are used to face and solve some of them. The book’s four chapters are based on lectures given by leading researchers in the field of geometric analysis and low-dimensional geometry/topology, respectively offering an introduction to: the differentiable sphere theorem (G. Besson), the geometrization of 3-manifolds (M. Boileau), the singularities of 3-dimensional Ricci flows (C. Sinestrari), and Kähler–Ricci flow (G. Tian). The lectures will be particularly valuable to young researchers interested in differential manifolds.