{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,13]],"date-time":"2026-07-13T23:22:14Z","timestamp":1783984934688,"version":"3.55.0"},"reference-count":0,"publisher":"The Electronic Journal of Combinatorics","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Electron. J. Combin."],"abstract":"<jats:p>There are just five Fra\u00efss\u00e9 classes of permutations (apart from the trivial class of permutations of a singleton set); these are the identity permutations, reversing permutations, composites (in either order) of these two classes, and all permutations. The paper also discusses infinite generalisations of permutations, and the connection with Fra\u00efss\u00e9's theory of countable homogeneous structures, and states a few open problems. Links with enumeration results, and the analogous result for circular permutations, are also described.<\/jats:p>","DOI":"10.37236\/1674","type":"journal-article","created":{"date-parts":[[2020,1,11]],"date-time":"2020-01-11T02:23:47Z","timestamp":1578709427000},"source":"Crossref","is-referenced-by-count":29,"title":["Homogeneous Permutations"],"prefix":"10.37236","volume":"9","author":[{"given":"Peter J.","family":"Cameron","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"23455","published-online":{"date-parts":[[2002,10,31]]},"container-title":["The Electronic Journal of Combinatorics"],"original-title":[],"link":[{"URL":"https:\/\/www.combinatorics.org\/ojs\/index.php\/eljc\/article\/download\/v9i2r2\/pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.combinatorics.org\/ojs\/index.php\/eljc\/article\/download\/v9i2r2\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2020,1,18]],"date-time":"2020-01-18T05:13:08Z","timestamp":1579324388000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.combinatorics.org\/ojs\/index.php\/eljc\/article\/view\/v9i2r2"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2002,10,31]]},"references-count":0,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2002,10,31]]}},"URL":"https:\/\/doi.org\/10.37236\/1674","relation":{},"ISSN":["1077-8926"],"issn-type":[{"value":"1077-8926","type":"electronic"}],"subject":[],"published":{"date-parts":[[2002,10,31]]},"article-number":"R2"}}