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Upper bounds for the first eigenvalue of the Laplacian in terms of anisiotrop...
19 pages, à paraître dans Results in Mathematics -
A pinching theorem for the first eigenvalue of the laplacian on hypersurfaces...
In this paper, we give pinching Theorems for the first nonzero eigenvalue $\lambda$ of the Laplacian on the compact hypersurfaces of the Euclidean space. Indeed, we... -
Extrinsic radius pinching in space forms of nonnegative sectional curvature
16 pages, a paraitre dans Mathematische Zeitschrift -
Finding at least one point in each connected component of a real algebraic se...
Article dans revue scientifique avec comité de lecture.
