3 papers
math.CO2015
Lexicographic Generation of Projective Spaces
Christoph Hering, Hans-Jörg Schaeffer
Lexicographic or first choice constructions of geometric objects sometimes lead to amazingly good results. Usually it is difficult to determine the precise identity of these geomet…
math.CO2015
On Triples of Numbers
Christoph Hering
Among three natural numbers there is always one which is larger than or equal to the Nim sum of the remaining two numbers. This amazing fact has many applications.
math.CO2012
Lexicographic Configurations
Christoph Hering, Andreas Krebs, Thomas Edgar
We describe a new way to construct finite geometric objects. For every k we obtain a symmetric configuration E(k-1) with k points on a line. In particular, we have a constructive e…