In a unified way, we study the generalized analogues of conics for normed planes by using the following natural approach: It is well known that there are different metrical definitions of conics in… (More)

In this note, we characterize finite 3-dimensional affine spaces as the only linear spaces endowed with set Ω of proper subspaces having the properties (1) every line contains a constant number of… (More)

In this article, we show that a linear space whose parameters are those of the complement of a subset in a finite projective plane π of order n such that no line is removed and a sufficient number of… (More)