Eberhard's theorem
= Eberhard's theorem
{wiki=Eberhard's_theorem}
Eberhard's theorem is a result in the field of projective geometry, specifically concerning sets of points and their configurations. The theorem states that if a finite set \\( S \\) of points in the projective plane is such that every line intersects at least \\( \\lambda \\) points of \\( S \\), then the total number of points in \\( S \\) is at most \\( \\lambda^2 \\).