info:oai:generic.eprints.org:803info:ofi/fmt:xml:xsd:oai_dc Stretching of Jordan arc contact systems de Fraysseix, Hubert Ossona de Mendez, Patrice M.999 Others Using a general resolution of barycentric systems we give a generalization of Tutte's theorem on convex drawing of planar graphs. We deduce a characterization of the edge coverings into pairwise non-crossing paths which are stretchable: such a system is stretchable if and only if each subsystem of at least two paths has at least 3 free vertices (vertices of the outer face of the induced subgraph which are internal to none of the paths of the subsystem). We also deduce that a contact system of pseudo-segments is stretchable if and only if it is extendible. Liotta, Giuseppe Meijer, Henk 2007 Journal (Paginated) PeerReviewed de Fraysseix, Hubert and Ossona de Mendez, Patrice (2007) Stretching of Jordan arc contact systems. [Journal (Paginated)] http://gdea.informatik.uni-koeln.de/803/