The concept of linear perceptron or spherical perceptron in confomal geometry is extended to the more general conic perceptron, namely the elliptical perceptron. By means of the d-uple embedding aâ€¦ (More)

In this paper we embed m-dimensional Euclidean space in the geometric algebra Clm to extend the operators of incidence in R to operators of incidence in the geometric algebra to generalize the notionâ€¦ (More)

In [BN] the authors construct a special complex of degree 20 over M , which for an open three dimensional set parametrizes smooth complex surfaces of degree four invariant which are Heisenbergâ€¦ (More)

It is well known that there is an open three-dimensional subvariety Ms of the Grassmannian of lines in P3 which parametrizes smooth irreducible complex surfaces of degree 4 which are Heisenbergâ€¦ (More)