{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,23]],"date-time":"2026-01-23T19:14:11Z","timestamp":1769195651246,"version":"3.49.0"},"reference-count":0,"publisher":"Walter de Gruyter GmbH","issue":"1","funder":[{"DOI":"10.13039\/501100006753","name":"CMUP","doi-asserted-by":"crossref","award":["UID\/MAT\/00144\/2013"],"award-info":[{"award-number":["UID\/MAT\/00144\/2013"]}],"id":[{"id":"10.13039\/501100006753","id-type":"DOI","asserted-by":"crossref"}]},{"DOI":"10.13039\/501100004837","name":"Ministerio de Ciencia e Innovaci\u00f3n of Spain","doi-asserted-by":"crossref","award":["Proyecto MTM2010-19938-C03-01"],"award-info":[{"award-number":["Proyecto MTM2010-19938-C03-01"]}],"id":[{"id":"10.13039\/501100004837","id-type":"DOI","asserted-by":"crossref"}]},{"name":"Spanish Government","award":["MTM2011-25955"],"award-info":[{"award-number":["MTM2011-25955"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2016,1,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>The Stallings construction for f.g. subgroups of free groups is generalized by introducing the concept of Stallings section, which allows efficient computation of the core of a Schreier graph based on edge folding. It is proved that the groups that admit Stallings sections are precisely the f.g. virtually free groups, this is proved through a constructive approach based on Bass\u2013Serre theory. Complexity issues and applications are also discussed.<\/jats:p>","DOI":"10.1515\/jgth-2015-0028","type":"journal-article","created":{"date-parts":[[2015,10,26]],"date-time":"2015-10-26T17:43:25Z","timestamp":1445881405000},"page":"25-54","source":"Crossref","is-referenced-by-count":8,"title":["Finite automata for Schreier graphs of\nvirtually free groups"],"prefix":"10.1515","volume":"19","author":[{"given":"Pedro V.","family":"Silva","sequence":"first","affiliation":[{"name":"Centro de Matem\u00e1tica, Faculdade de Ci\u00eancias, Universidade do Porto, R. Campo Alegre 687, 4169-007 Porto, Portugal"}]},{"given":"Xaro","family":"Soler-Escriv\u00e0","sequence":"additional","affiliation":[{"name":"Dpt. de Matem\u00e0tiques, Universitat d'Alacant, Apartat de correus 99, 03080-Alacant, Spain"}]},{"given":"Enric","family":"Ventura","sequence":"additional","affiliation":[{"name":"Dept. Mat. Apl. III, Universitat Polit\u00e8cnica de Catalunya, Manresa, Barcelona, Catalunya, Spain"}]}],"member":"374","published-online":{"date-parts":[[2015,10,24]]},"container-title":["Journal of Group Theory"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.degruyter.com\/document\/doi\/10.1515\/jgth-2015-0028\/xml","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.degruyter.com\/document\/doi\/10.1515\/jgth-2015-0028\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,4,1]],"date-time":"2023-04-01T10:36:08Z","timestamp":1680345368000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.degruyter.com\/document\/doi\/10.1515\/jgth-2015-0028\/html"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2015,10,24]]},"references-count":0,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2015,10,24]]},"published-print":{"date-parts":[[2016,1,1]]}},"alternative-id":["10.1515\/jgth-2015-0028"],"URL":"https:\/\/doi.org\/10.1515\/jgth-2015-0028","relation":{},"ISSN":["1433-5883","1435-4446"],"issn-type":[{"value":"1433-5883","type":"print"},{"value":"1435-4446","type":"electronic"}],"subject":[],"published":{"date-parts":[[2015,10,24]]}}}