"new foundations must give new math"
from "The Basic Picture. Structures for constructive
topology"
by Giovanni Sambin, Oxford University Press, forthcoming
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Dipartimento di Matematica Pura ed Applicata, Università degli Studi di Padova, Italy
University of Padova, Italy
AILA (Italian Association of Logic and Applications), whose first president was Giovanni Sambin (from 1987 to 1994).
Thierry Coquand
Göteborg
Formal Topology and Prufer Domain
We illustrate several notions of formal topology connected to the
notion of Prufer domain (domains that are locally valuation domains),
which can be described as a "first-order" approximation of the notion
of Dedekind domain.
In particular we present an example which requires forcing over a
site (which forces the existence of the algebraic closure of a field).