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Algebra Comput."],"published-print":{"date-parts":[[2021,8]]},"abstract":"<jats:p> We show that attaching a whisker (or a pendant) at the vertices of a cycle cover of a graph results in a new graph with the following property: all symbolic powers of its cover ideal are Koszul or, equivalently, componentwise linear. This extends previous work where the whiskers were added to all vertices or to the vertices of a vertex cover of the graph. <\/jats:p>","DOI":"10.1142\/s0218196721500405","type":"journal-article","created":{"date-parts":[[2021,5,15]],"date-time":"2021-05-15T16:11:36Z","timestamp":1621095096000},"page":"865-881","source":"Crossref","is-referenced-by-count":2,"title":["Symbolic powers of cover ideals of graphs and Koszul property"],"prefix":"10.1142","volume":"31","author":[{"given":"Yan","family":"Gu","sequence":"first","affiliation":[{"name":"Soochow University, Soochow College & School of Mathematical Sciences, Suzhou 215006, P. R. 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