{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,2]],"date-time":"2025-11-02T10:19:52Z","timestamp":1762078792838},"reference-count":4,"publisher":"Cambridge University Press (CUP)","issue":"4","license":[{"start":{"date-parts":[[2014,3,12]],"date-time":"2014-03-12T00:00:00Z","timestamp":1394582400000},"content-version":"unspecified","delay-in-days":6310,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. symb. log."],"published-print":{"date-parts":[[1996,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>We show that the \u03a0<jats:sub arrange=\"stack\">2<\/jats:sub><jats:sup arrange=\"stack\">0<\/jats:sup> enumeration degrees are not dense. This answers a question posed by Cooper.<\/jats:p>","DOI":"10.2307\/2275821","type":"journal-article","created":{"date-parts":[[2006,5,6]],"date-time":"2006-05-06T18:59:54Z","timestamp":1146941994000},"page":"1364-1379","source":"Crossref","is-referenced-by-count":9,"title":["The \u03a0<sub>2<\/sub><sup>0<\/sup> enumeration degrees are not dense"],"prefix":"10.1017","volume":"61","author":[{"given":"William C.","family":"Calhoun","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Theodore A.","family":"Slaman","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"56","published-online":{"date-parts":[[2014,3,12]]},"reference":[{"key":"S0022481200016947_ref003","first-page":"57","volume-title":"Recursion theory week","author":"Cooper","year":"1989"},{"key":"S0022481200016947_ref002","first-page":"503","volume":"49","author":"Cooper","year":"1984","journal-title":"Partial degrees and the density problem, Part 2: The enumeration degrees of the  sets are dense"},{"key":"S0022481200016947_ref001","first-page":"854","volume":"47","author":"Cooper","year":"1982","journal-title":"Partial degrees and the density problem I"},{"key":"S0022481200016947_ref004","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-662-02460-7"}],"container-title":["Journal of Symbolic Logic"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.cambridge.org\/core\/services\/aop-cambridge-core\/content\/view\/S0022481200016947","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,5,12]],"date-time":"2019-05-12T15:59:21Z","timestamp":1557676761000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.cambridge.org\/core\/product\/identifier\/S0022481200016947\/type\/journal_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1996,12]]},"references-count":4,"journal-issue":{"issue":"4","published-print":{"date-parts":[[1996,12]]}},"alternative-id":["S0022481200016947"],"URL":"https:\/\/doi.org\/10.2307\/2275821","relation":{},"ISSN":["0022-4812","1943-5886"],"issn-type":[{"value":"0022-4812","type":"print"},{"value":"1943-5886","type":"electronic"}],"subject":[],"published":{"date-parts":[[1996,12]]}}}