The geometry of in translation planes of even order .
The geometry of GL(2,q) in translation planes of even order (Corrigendum).
The geometry of non-unit Pisot substitutions
It is known that with a non-unit Pisot substitution one can associate certain fractal tiles, so-called Rauzy fractals. In our setting, these fractals are subsets of a certain open subring of the adèle ring of the associated Pisot number field. We present several approaches on how to define Rauzy fractals and discuss the relations between them. In particular, we consider Rauzy fractals as the natural geometric objects of certain numeration systems, in terms of the dual of the one-dimensional realization...
The height of directed column-convex polyominoes. (La hauteur des polyominos dirigés verticalement convexe.)
The impossibility of a tesselation of the plane into equilateral triangles whose sidelengths are mutually different, one of them being minimal.
The intersection numbers of a complex.
The largest intersection lattice of a discriminantal arrangement.
The many formulae for the number of Latin rectangles.
The Mathieu group and its pseudogroup extension .
The maximum number of odd submatrices in -matrices.
The maximum size of a partial spread in is .
The middle graph of a hypergraph
The minimal perimeter for confined deformable bubbles of equal area.
The minimum rank problem over finite fields.
The Moore-Penrose inverse of a free matrix.
The nonexistence of certain projective planes of order 15.
The nonexistence of regular near octagons with parameters .
The number of inequivalent optimal covering codes.
The number of knight's tours equals 33, 439, 123, 484, 294—counting with binary decision diagrams.
The number of orthogonal Latin squares