COMBINATORICS
2004
13 years 10 months ago
2004
A configuration (pq, nk) is a collection of p points and n straight lines in the Euclidean plane so that every point has q straight lines passing through it and every line has k p...
COMBINATORICS
2006
13 years 11 months ago
2006
An astral configuration (pq, nk) is a collection of p points and n straight lines in the Euclidean plane where every point has q straight lines passing through it and every line h...