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Finally, we obtain some results on frame graphs with groupoids.<\/jats:p>","DOI":"10.3390\/sym10070297","type":"journal-article","created":{"date-parts":[[2018,7,24]],"date-time":"2018-07-24T02:58:56Z","timestamp":1532401136000},"page":"297","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["A Method to Identify Simple Graphs by Special Binary Systems"],"prefix":"10.3390","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5321-5919","authenticated-orcid":false,"given":"Hee Sik","family":"Kim","sequence":"first","affiliation":[{"name":"Research Institute for Natural Sci., Department of Mathematics, Hanyang University, Seoul 04763, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J.","family":"Neggers","sequence":"additional","affiliation":[{"name":"Department of Mathematics, University of Alabama, Tuscaloosa, AL 35487-0350, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sun Shin","family":"Ahn","sequence":"additional","affiliation":[{"name":"Department of Mathematics Education, Dongguk University, Seoul 04620, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2018,7,23]]},"reference":[{"key":"ref_1","first-page":"7","article-title":"Partially ordered sets and groupoids","volume":"16","author":"Neggers","year":"1976","journal-title":"Kyungpook Math. 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