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Topological aspects of suitable theories

Authors :
H. Simmons
Source :
Proceedings of the Edinburgh Mathematical Society. 19:383-391
Publication Year :
1975
Publisher :
Cambridge University Press (CUP), 1975.

Abstract

Roughly speaking a suitable theory is a theory T together with its formal provability predicate Prv (.). A pseudo-topological space is a boolean algebra B which carries a derivative operation d and its associated closure operation c. Thus we can pretend that B is a topological space. We show that the Lindenbaum algebra B(T) of a suitable theory becomes, in a natural way, a pseudotopological space, and hence we can translate properties of T into topological language, as properties of B(T). We do this translation for several properties of T, including (1) satisfying Gödel's first theorem, (2) satisfying Löb's theorem and (3) asserting one's own inconsistency. These correspond to the topological properties (1) having an isolated point, (2) being scattered, (3) being discrete.

Details

ISSN :
14643839 and 00130915
Volume :
19
Database :
OpenAIRE
Journal :
Proceedings of the Edinburgh Mathematical Society
Accession number :
edsair.doi...........b84a3cc12b911675e4121bd05d349863
Full Text :
https://doi.org/10.1017/s001309150001049x