
A famous theorem in the theory of linear spaces states that every finite linear space has at least as many lines as points. This result of De Bruijn and Erds led to the conjecture that every linear space with few lines canbe obtained from a projective plane by changing only a...

A famous theorem in the theory of linear spaces states that every finite linear space has at least as many lines as points. This result of De Bruijn and Erd]s led to the conjecture that every linear space with "few lines" canbe obtained from a projective plane by changing only...

A famous theorem in the theory of linear spaces states that every finite linear space has at least as many lines as points. This result of De Bruijn and Erds led to the conjecture that every linear space with few lines canbe obtained from a projective plane by changing only a...

1991