I would like to inform you that now you can find on-line almost all my papers in mathematics and in philosophy, at the two url : http://pageperso-orange.fr/rene.guitart and http://people.math.jussieu.fr/~guitart/ There are now about 110 papers which are accessible, and for the rest (of about 20 papers) they will be scannned and added progressively. Kindest regards, René Guitart