Morphisms of polar spaces.
Morphisms of projective spaces over rings.
Moufang buildings and twin buildings.
Moufang planes and the groups EK6 and SL2(K), K a Cayley division algebra.
Moufang polygons. I: Root data.
Moufang trees and generalized quadrangles.
Movable configurations.
Multiple spread retraction.
Multiplicative Cauchy functional equation and the equation of ratios on the Lorentz cone
It is proved that the solution of the multiplicative Cauchy functional equation on the Lorentz cone of dimension greater than two is a power function of the determinant. The equation is solved in full generality, i.e. no smoothness assumptions on the unknown function are imposed. Also the functional equation of ratios, of a similar nature, is solved in full generality.
Multiplicities of solutions to some enumerative contact problems.
Multiplicity of a foliation on projective spaces along an integral curve.
We compute the global multiplicity of a 1-dimensional foliation along an integral curve in projective spaces. We give a bound in the way of Poincaré problem for a complete intersection curves. In the projective plane, this bound give us a bound of the degree of non irreducible integral curves in function of the degree of the foliation.
Multiplikationen mit großen Automorphismengruppen.
Multiquasigroups and weighted projective planes
Mutation and volumes of knots in S3.
Nachtrag zu dem ?zweiten Aufsatze über Nicht-Euklidische Geometrie" (diese Annalen Bd. VI., S. 112 ff.)
Nachtrag zu "Ein Satz über räumliche Fünfecke".
Napoleon's theorem and generalizations through linear maps.
Natural Bases for Subplanes of Free Completions.
Natural planar ternary rings
Natürlich-kinematische Erzeugung isophotischer Elementscharen aus ebensolchen bei klassischer geometrischer Zentralbeleuchtung