DM
2010
13 years 11 months ago
2010
In this paper, we first prove some general results on the number of fixed points of collineations of finite partial geometries, and on the number of absolute points of dualities o...
DCC
2006
IEEE
14 years 11 months ago
2006
IEEE
We construct various classes of low-density parity-check codes using point-line incidence structures in the classical projective plane PG(2, q). Each incidence structure is based ...