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Finally, we obtain that the fundamental groups of 94 polygroups are the trivial group. The numbers of polygroups in classes [Formula: see text] and [Formula: see text] are 16 and 3, respectively, and the classes [Formula: see text] and [Formula: see text] are singleton. <\/jats:p>","DOI":"10.1142\/s1793830919500472","type":"journal-article","created":{"date-parts":[[2019,7,19]],"date-time":"2019-07-19T03:57:14Z","timestamp":1563508634000},"page":"1950047","source":"Crossref","is-referenced-by-count":1,"title":["Characterization of small polygroups by their fundamental groups"],"prefix":"10.1142","volume":"11","author":[{"given":"D.","family":"Heidari","sequence":"first","affiliation":[{"name":"Faculty of Science, Mahallat Institute of Higher Education, Mahallat, Iran"}]},{"given":"B.","family":"Davvaz","sequence":"additional","affiliation":[{"name":"Department of Mathematics, Yazd University, Yazd, Iran"}]}],"member":"219","published-online":{"date-parts":[[2019,9,16]]},"reference":[{"key":"S1793830919500472BIB001","doi-asserted-by":"publisher","DOI":"10.1080\/00927872.2012.661006"},{"key":"S1793830919500472BIB002","first-page":"13","volume-title":"Aplimat \u2014 15th Conf. 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