{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,14]],"date-time":"2026-02-14T14:21:54Z","timestamp":1771078914695,"version":"3.50.1"},"reference-count":0,"publisher":"The Electronic Journal of Combinatorics","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Electron. J. Combin."],"abstract":"<jats:p>This paper starts the Wilf-classification of mesh patterns of length 2. Although there are initially 1024 patterns\u00a0to consider we introduce automatic methods to reduce the number of potentially different Wilf-classes to at\u00a0most 65. By enumerating some of the remaining classes we bring that upper-bound further down to 56. Finally,\u00a0we conjecture that the actual number of Wilf-classes of mesh patterns of length 2 is 46.<\/jats:p>","DOI":"10.37236\/4678","type":"journal-article","created":{"date-parts":[[2020,1,10]],"date-time":"2020-01-10T23:02:07Z","timestamp":1578697327000},"source":"Crossref","is-referenced-by-count":3,"title":["Wilf-Classification of Mesh Patterns of Short Length"],"prefix":"10.37236","volume":"22","author":[{"given":"\u00cdsak","family":"Hilmarsson","sequence":"first","affiliation":[]},{"given":"Ingibj\u00f6rg","family":"J\u00f3nsd\u00f3ttir","sequence":"additional","affiliation":[]},{"given":"Steinunn","family":"Sigur\u00f0ard\u00f3ttir","sequence":"additional","affiliation":[]},{"given":"L\u00edna","family":"Vi\u00f0arsd\u00f3ttir","sequence":"additional","affiliation":[]},{"given":"Henning","family":"Ulfarsson","sequence":"additional","affiliation":[]}],"member":"23455","published-online":{"date-parts":[[2015,10,16]]},"container-title":["The Electronic Journal of Combinatorics"],"original-title":[],"link":[{"URL":"https:\/\/www.combinatorics.org\/ojs\/index.php\/eljc\/article\/download\/v22i4p13\/pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.combinatorics.org\/ojs\/index.php\/eljc\/article\/download\/v22i4p13\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2020,1,17]],"date-time":"2020-01-17T10:09:17Z","timestamp":1579255757000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.combinatorics.org\/ojs\/index.php\/eljc\/article\/view\/v22i4p13"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2015,10,16]]},"references-count":0,"journal-issue":{"issue":"4","published-online":{"date-parts":[[2015,10,16]]}},"URL":"https:\/\/doi.org\/10.37236\/4678","relation":{},"ISSN":["1077-8926"],"issn-type":[{"value":"1077-8926","type":"electronic"}],"subject":[],"published":{"date-parts":[[2015,10,16]]},"article-number":"P4.13"}}