{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2023,12,21]],"date-time":"2023-12-21T19:36:47Z","timestamp":1703187407855},"reference-count":20,"publisher":"Cambridge University Press (CUP)","issue":"1","license":[{"start":{"date-parts":[[2014,3,12]],"date-time":"2014-03-12T00:00:00Z","timestamp":1394582400000},"content-version":"unspecified","delay-in-days":19734,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. symb. log."],"published-print":{"date-parts":[[1960,3]]},"abstract":"Let P0<\/jats:sub>, \u2026,Pq<\/jats:sub> be predicates, of which at least one has two or more places. By a formula in<\/jats:italic> P0<\/jats:sub>, \u2026, Pq<\/jats:sub> (or simply a formula<\/jats:italic>, when the list P0<\/jats:sub>, \u2026, Pq<\/jats:sub> is fixed, as in this section) is meant any formula whose only symbols, other than sentential connectives, quantifiers, and (individual) variables, are among P0<\/jats:sub>, \u2026, Pq<\/jats:sub>. A realization<\/jats:italic> (or possible model<\/jats:italic>) of such a formula is a system where A<\/jats:italic> is a non-empty set and each Pk<\/jats:sub> is a relation among the elements of A<\/jats:italic>, having the same number of places as Pk<\/jats:sub>.<\/jats:p>","DOI":"10.2307\/2964336","type":"journal-article","created":{"date-parts":[[2006,5,6]],"date-time":"2006-05-06T20:07:48Z","timestamp":1146946068000},"page":"39-53","source":"Crossref","is-referenced-by-count":40,"title":["Sentences true in all constructive models"],"prefix":"10.1017","volume":"25","author":[{"given":"R. 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