## Product Formula For Curvature

The Curvature of graphs multplies under the Shannon product (strong product).

The Curvature of graphs multplies under the Shannon product (strong product).

The f-function of a graph minus 1 is the sum of the antiderivatives of the f-function anti-derivatives evaluated on the unit spheres.

Dehn-Sommerville relations are a symmetry for a class of geometries which are of Euclidean nature.