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An inquiry into indistinguishability operators. (English) Zbl 0564.03027
Aspects of vagueness, Theory Decis. Libr. 39, 231-256 (1984).
[For the entire collection see Zbl 0533.00005.]
The authors maintain that discerning objects in a theory is an essential problem. Starting from this point of view, they try to build a concept of indistinguishability. The proposal is presented in mathematical language and originates in assuming a previous equality. The proposal is intended to shed a common light on problems arising in various fields such as probability theory, logic and social sciences.
Reviewer: D.Costantini

MSC:
03B99 General logic
60A05 Axioms; other general questions in probability