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JOURNALS // Matematicheskie Trudy // Archive

Mat. Tr., 2001 Volume 4, Number 2, Pages 42–52 (Mi mt12)

This article is cited in 1 paper

The Nonstandard Hull of a Normed Space in a Boolean-valued Universe

A. E. Gutmana, D. B. Ryabkob

a Sobolev Institute of Mathematics, Siberian Branch of the Russian Academy of Sciences
b Novosibirsk State University

Abstract: In this article, we extend some results of infinitesimal analysis on normed spaces and the field of reals to the functional representation of a Boolean-valued universe. In particular, we prove equivalence of the following three conditions for an arbitrary polyverse over $Q$: a point $q\in Q$ is not $\sigma$-isolated; the stalk of the polyverse at $q$ is countably saturated; and the nonstandard hull of every normed space in the stalk of the polyverse at $q$ is complete.

Key words: Boolean-valued analysis, infinitesimal analysis, nonstandard analysis, polyverse, nonstandard hull.

UDC: 517.98

Received: 19.02.2001


 English version:
Siberian Advances in Mathematics, 2002, 12:2, 38–47

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