{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,28]],"date-time":"2025-10-28T03:18:16Z","timestamp":1761621496717,"version":"3.41.2"},"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>We study three sequences of polynomials defined as successive derivatives with respect to a differential operator associated with a grammar (one of these sequences was originally introduced by Ramanujan). Combinatorial interpretations for these polynomials are found in terms of rooted trees and graphs of mappings from $[n]$ to $[n]$.<\/jats:p>","DOI":"10.37236\/1275","type":"journal-article","created":{"date-parts":[[2020,1,10]],"date-time":"2020-01-10T20:51:44Z","timestamp":1578689504000},"source":"Crossref","is-referenced-by-count":13,"title":["Grammaire de Ramanujan et Arbres de Cayley"],"prefix":"10.37236","volume":"3","author":[{"given":"Dominique","family":"Dumont","sequence":"first","affiliation":[]},{"given":"Armand","family":"Ramamonjisoa","sequence":"additional","affiliation":[]}],"member":"23455","published-online":{"date-parts":[[1995,7,25]]},"container-title":["The Electronic Journal of Combinatorics"],"original-title":[],"link":[{"URL":"https:\/\/www.combinatorics.org\/ojs\/index.php\/eljc\/article\/download\/v3i2r17\/pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.combinatorics.org\/ojs\/index.php\/eljc\/article\/download\/v3i2r17\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2020,1,18]],"date-time":"2020-01-18T01:27:01Z","timestamp":1579310821000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.combinatorics.org\/ojs\/index.php\/eljc\/article\/view\/v3i2r17"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1995,7,25]]},"references-count":0,"journal-issue":{"issue":"2","published-online":{"date-parts":[[1996,1,24]]}},"URL":"https:\/\/doi.org\/10.37236\/1275","relation":{},"ISSN":["1077-8926"],"issn-type":[{"type":"electronic","value":"1077-8926"}],"subject":[],"published":{"date-parts":[[1995,7,25]]},"article-number":"R17"}}