Abstract and concrete categories
Abstract and concrete categories
Boolean derivatives on cellular automata
Cellular automata
A non-topological view of dcpos as convergence spaces
Theoretical Computer Science - Topology in computer science
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We set up differential calculi in the Cartesian-closed category CONV of convergence spaces. The central idea is to uniformly define the 3-place relation __ is a differential of __ at __for each pair of convergence spaces X,Yin the category, where the first and second arguments are elements of Hom(X,Y) and the third argument is an element of X, in such a way as to (1) obtain the chain rule, (2) have the relation be in agreement with standard definitions from real and complex analysis, and (3) depend only on the convergence structures native to the spaces Xand Y. All topological spaces and all reflexive directed graphs (i.e. discrete structures) are included in CONV. Accordingly, ramified hybridizations of discrete and continuous spaces occur in CONV. Moreover, the convergence structure within each space local to each point, individually, can be discrete, continuous, or hybrid.