224 citations
- Centre National de la Recherche ScientifiqueFR376 papers
- Université Grenoble AlpesFR309 papers
- Université Joseph FourierFR201 papers
- Laboratoire de Mathématiques d'OrsayFR42 papers
- Pôle de recherche et d'enseignement supérieur Université de GrenobleFR37 papers
- Institut de Mathématiques de Jussieu-Paris Rive GaucheFR31 papers
- Laboratoire de Mathématiques Jean LerayFR25 papers
- Université Paris-SudFR24 papers
- Institut Camille JordanFR19 papers
- Laboratoire de Physique et Modélisation des Milieux CondensésFR19 papers
- Sorbonne UniversitéFR19 papers
- Université Toulouse III - Paul SabatierFR17 papers
5 papers · 2 filters
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.
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…
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…
The special subgroup of invertible non-commutative rational power series as a metric group
Roland Bacher
We give an easy proof of Schützenberger's Theorem stating that non-commutative formal power series are rational if and only if they are recognisable. A byproduct of this proof is a…
Bimonotone enumeration
Michael Eisermann
Solutions of a diophantine equation , with in some finite range, can be efficiently enumerated by sorting the values of and in ascending order an…