A geometry of information, I: Nerves, posets and differential forms

Abstract

The main theme of this workshop is \u27Spatial Representation: Continuous vs. Discrete\u27. Spatial representation has two contrasting but interacting aspects (i) representation emph{of} spaces\u27 and (ii) representation emph{by} spaces. In this paper we will examine two aspects that are common to both interpretations of the theme, namely nerve constructions and refinement. Representations change, data changes, spaces change. We will examine the possibility of a \u27differential geometry\u27 of spatial representations of both types, and in the sequel give an algebra of differential forms that has the potential to handle the dynamical aspect of such a geometry. We will discuss briefly a conjectured class of spaces, generalising the Cantor set which would seem ideal as a test-bed for the set of tools we are developing