Sur les feuilletages holomorphes singuliers de codimension 1.
Let F be a codimension one holomorphic foliation whose singular set Σ is contained in a compact leaf S of F. When F is of dimension one, Σ is a set of isolated points {q1, ..., qr}, C. Camacho and P. Sad define the index of F at each point qk and prove that the sum of these indices equals the Euler class c1(E) of the fibre bundle E normal to S. Generally, whenever Σ is of any dimension m, we can...