%0 Journal Article %T La formule de la trace pour les tissus planaires %A Jean Paul Dufour %J Mathematics %D 2015 %I arXiv %X We give a complete proof of the fact that the trace of the curvature of the connection associated to a planar d-web (d>3) is the sum of the Blaschke curvatures of its sub 3-webs. %U http://arxiv.org/abs/1505.02184v1