L'interpolation des Fonctions Différentiables de Plusteurs Variables.- Normal forms for analytic matrix valued functions.- Geometric aspects of the singular solutions of certain differential equations.- Morse relations for curvature and tightness.- Blowing up singularities.- Singularities in the differential geometry of submanifolds.- A proof of a conjecture of loewner and of the caratheodory conjecture concerning umbilic points.- Geometric singularities.- Remark on geometric singularities.- Geometric differentiation - A thomist view of differential geometry.- Lectures on the theorem of gromov.- Formes de Contact sur les Variétés de Dimension 3.- Algebraic invariants for pseudo-isotopies.- Reflections on gradient vector fields.- Singularities in spaces.- Pontrjagin classes of rational homology manifolds and the signature of some affine hypersurfaces.- Topology of isolated singularities of complex spaces.- Deformations Equisingulières des Idéaux Jacobiens de Courbes Planes.- Non-singular deformations of singular spaces with normal crossings.- Singularities in relativistic quantum mechanics.- Landau singularities and a problem in graph theory.- The definition and occurrence of singularities in general relativity.