On Cameron-Liebler line classes.
On Certain Construction of Rhombic Hexecontahedra
On chirality groups and regular coverings of regular oriented hypermaps
We prove that if the Walsh bipartite map of a regular oriented hypermap is also orientably regular then both and have the same chirality group, the covering core of (the smallest regular map covering ) is the Walsh bipartite map of the covering core of and the closure cover of (the greatest regular map covered by ) is the Walsh bipartite map of the closure cover of . We apply these results to the family of toroidal chiral hypermaps induced by the family of toroidal bipartite maps...
On Collineation Groups of Finite Projective Spaces.
On collineation groups of translation planes of order .
On compression of Bruhat--Tits buildings.
On configuration of arguesian spaces
On configurations in 3-space without elementary planes and on the number of ordinary planes.
On continuous preservation of norms and areas.
On converses of Napoleon's theorem and a modified shape function.
On cyclic curves in the Euclidean n-space.
On Decomposititons of Discontinuous Groups of the Plane.
On Desargues geometrization of the characteristic of a skew field.
On Difference Matrices, Resolvable Transversal Designs and Generalized Hadamard Matrices.
On distance preserving transformations of Euclidean-like planes over the rational fields.
On distance preserving transformations of Euclidean-like planes over the rational fields. (Short Communication).
On distance preserving transformations of lines in Euclidean three-space.
On Dominating Sequences in the Unit Disc.
On Double Transitivity in Finite Affine Planes.
On elations in semi-transitive planes.