Continuous and smooth envelopes of topological algebras. Part~1

S. S. Akbarov

Itogi nauki i tehniki. Sovremennaâ matematika i eë priloženiâ. Tematičeskie obzory, Functional analysis, Tome 129 (2017), pp. 3-133

Résumé

Since the first optical instruments have been invented, an idea that the visible image of an object under observation depends on tools of observation became commonly assumed in physics. A way of formalizing this idea in mathematics is the construction that assigns to an arbitrary object $A$ in a category $K$ its envelope $\operatorname{Env}^{\Omega}_{\Phi}A$ in a given class of morphisms (a class of representations) with respect to a given class of morphisms (a class of observation tools) $\Phi$. It turns out that if we take a sufficiently wide category of topological algebras as $K$, then each choice of the classes $\Omega$ and $\Phi$ defines a “projection of functional analysis into geometry”, and the standard “geometric disciplines”, like complex geometry, differential geometry, and topology, become special cases of this construction. This gives a formal scheme of “categorical construction of geometries” with many interesting applications, in particular, “geometric generalizations of the Pontryagin duality” (to the classes of noncommutative groups). In this paper, we describe this scheme in topology and in differential geometry.

Détail

Keywords: stereotype space, stereotype algebra, envelope, Pontryagin duality.