86 citations
- Centre National de la Recherche ScientifiqueFR21 papers
- Université Grenoble AlpesFR21 papers
- Université Joseph FourierFR11 papers
- Université Pierre Mendès FranceFR6 papers
- Gesellschaft Fur Mathematik Und DatenverarbeitungDE4 papers
- Ruhr University BochumDE4 papers
- Institut Camille JordanFR3 papers
- Institut de Mathématiques de Jussieu-Paris Rive GaucheFR3 papers
- Institut de PhysiqueFR3 papers
- University of GeorgiaUS3 papers
- Institut de recherche mathématique de RennesFR2 papers
- Laboratoire de Mathématiques d'OrsayFR2 papers
14 papers · 1 filter
Drawing disconnected graphs on the Klein bottle
Laurent Beaudou, Antoine Gerbaud, Roland Grappe +1
We prove that two disjoint graphs must always be drawn separately on the Klein bottle, in order to minimize the crossing number of the whole drawing.
Stability of the vanishing of the -cohomology under small horizontal perturbations of the CR structure in compact abstract q-concave CR manifolds
Christine Laurent-Thiébaut
We consider perturbations of CR structures which preserve the complex tangent bundle. For a compact generic CR manifold its concavity properties and hence the finiteness of some $\…
On polytopes associated to factorisations of prime-powers
Roland Bacher
We study polytopes associated to factorisations of prime powers. These polytopes have explicit descriptions either in terms of their vertices or as intersections of closed halfspac…
A note on certain Kronecker coefficients
Laurent Manivel
We prove an explicit formula for the tensor product with itself of an irreducible complex representation of the symmetric group defined by a rectangle of height two. We also descri…
Kondo effects in a C_60 single-molecule transistor
N. Roch, C. B. Winkelmann, S. Florens +3
We have used the electromigration technique to fabricate a single-molecule transistor (SMT). We present a full experimental study as a function of temperature, down t…
On a family of tridiagonal matrices
Roland Bacher
We show that certain integral positive definite symmetric tridiagonal matrices of determinant are in one to one correspondence with elements of . We s…