{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,28]],"date-time":"2025-09-28T12:44:24Z","timestamp":1759063464776},"reference-count":4,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2006,10,3]],"date-time":"2006-10-03T00:00:00Z","timestamp":1159833600000},"content-version":"vor","delay-in-days":7521,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Graph Theory"],"published-print":{"date-parts":[[1986,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>We show that a graph <jats:italic>G<\/jats:italic> with <jats:italic>n<\/jats:italic> vertices is a <jats:italic>q<\/jats:italic>\u2010tree if and only if its chromatic polynomial is <jats:italic>P<\/jats:italic>(<jats:italic>G<\/jats:italic>, \u03bb) = \u03bb(\u03bb \u2013 1)  \u20db (\u03bb \u2013 <jats:italic>q<\/jats:italic> + 1) (\u03bb \u2013 <jats:italic>q<\/jats:italic>)<jats:sup><jats:italic>n<\/jats:italic>\u2010<jats:italic>q<\/jats:italic><\/jats:sup> where <jats:italic>n<\/jats:italic> \u2265<jats:italic>q<\/jats:italic>.<\/jats:p>","DOI":"10.1002\/jgt.3190100116","type":"journal-article","created":{"date-parts":[[2007,5,26]],"date-time":"2007-05-26T11:57:17Z","timestamp":1180180637000},"page":"129-136","source":"Crossref","is-referenced-by-count":16,"title":["On <i>q<\/i>\u2010trees"],"prefix":"10.1002","volume":"10","author":[{"given":"Chong\u2010Yun","family":"Chao","sequence":"first","affiliation":[]},{"given":"Nian\u2010Zu","family":"Li","sequence":"additional","affiliation":[]},{"given":"Shao\u2010Ji","family":"Xu","sequence":"additional","affiliation":[]}],"member":"311","published-online":{"date-parts":[[2006,10,3]]},"reference":[{"key":"e_1_2_1_2_2","doi-asserted-by":"publisher","DOI":"10.21236\/AD0705364"},{"key":"e_1_2_1_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0021-9800(68)80087-0"},{"key":"e_1_2_1_4_2","unstructured":"Z.Skupien Stirling numbers and coloring ofq\u2010trees Prace Nauk. Inst. Mat. Politechn. Wroclaw Ser. Stud. i Materi\u00fd 13 Grafy hipergrafy system blokow (1977) pp.63\u201367."},{"key":"e_1_2_1_5_2","doi-asserted-by":"publisher","DOI":"10.1002\/jgt.3190090209"}],"container-title":["Journal of Graph Theory"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fjgt.3190100116","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/jgt.3190100116","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,21]],"date-time":"2023-10-21T22:56:17Z","timestamp":1697928977000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/jgt.3190100116"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1986,3]]},"references-count":4,"journal-issue":{"issue":"1","published-print":{"date-parts":[[1986,3]]}},"alternative-id":["10.1002\/jgt.3190100116"],"URL":"https:\/\/doi.org\/10.1002\/jgt.3190100116","archive":["Portico"],"relation":{},"ISSN":["0364-9024","1097-0118"],"issn-type":[{"value":"0364-9024","type":"print"},{"value":"1097-0118","type":"electronic"}],"subject":[],"published":{"date-parts":[[1986,3]]}}}