Table of Contents

Classes caracteristiques lagrangiennes.- Combinatorial and arithmetic identities based on formal group laws.- On the stable splitting of U(n) and—U(n).- The homotopy spectral sequence for equivariant function complexes.- On the homotopy type of the components of map*(BS3,BS3).- The homotopic uniqueness of BS 3.- Maps between classifying spaces.- Nilpotent group action and Euler characteristic.- On the fundamental catn-group of an n-cube of spaces.- Coloring maps on surfaces.- Sur les A-algebres instables.- The Homotopy category of homotopy factorizations.- Proper cohomologies and the proper classification problem.- Squaring operations in mod 2 cohomology of quotients of compact lie groups by maximal tori.- On the structure of the—-injectives.- The bott filtration of a loop group.- On maps from F to Z.- Splitting—(CP? ×…× CP?) and the action of steenrod squares Sqi on the polynomial ring F2 [x1,…,xn].