Hostname: page-component-7b7567c8c-fvjsw Total loading time: 0 Render date: 2026-11-12T22:25:27.526Z Has data issue: false hasContentIssue false

Groundwork for weak analysis

Published online by Cambridge University Press:  12 March 2014

António M. Fernandes
Affiliation:
Departamento de Matemática, Instituto Superior Técnico, Av. Rovisco Pais. 1096 Lisboa Codex., Portugal, E-mail: amfernandes@netcabo.pt
Fernando Ferreira
Affiliation:
Departamento de Matemática, Universidade de Lisboa, Rua Ernesto de Vasconcelos, Bloco C1-3. P-1749-016 Lisboa, Portugal, E-mail: ferferr@cii.fc.ul.pt

Abstract

This paper develops the very basic notions of analysis in a weak second-order theory of arithmetic BTFA whose provably total functions are the polynomial time computable functions. We formalize within BTFA the real number system and the notion of a continuous real function of a real variable. The theory BTFA is able to prove the intermediate value theorem, wherefore it follows that the system of real numbers is a real closed ordered field. In the last section of the paper, we show how to interpret the theory BTFA in Robinson's theory of arithmetic Q. This fact entails that the elementary theory of the real closed ordered fields is interpretable in Q.

Information

Type
Research Article
Copyright
Copyright © Association for Symbolic Logic 2002

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable