{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,8]],"date-time":"2025-11-08T13:29:04Z","timestamp":1762608544188},"reference-count":25,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2021,12,14]],"date-time":"2021-12-14T00:00:00Z","timestamp":1639440000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Random Struct Algorithms"],"published-print":{"date-parts":[[2022,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>A <jats:italic>k<\/jats:italic>\u2010uniform hypergraph with <jats:italic>n<\/jats:italic> vertices is an <jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"graphic\/rsa21071-math-0001.png\" xlink:title=\"urn:x-wiley:rsa:media:rsa21071:rsa21071-math-0001\" \/>\u2010omitting system if it has no two edges with intersection size <jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"graphic\/rsa21071-math-0002.png\" xlink:title=\"urn:x-wiley:rsa:media:rsa21071:rsa21071-math-0002\" \/>. If in addition it has no two edges with intersection size greater than <jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"graphic\/rsa21071-math-0003.png\" xlink:title=\"urn:x-wiley:rsa:media:rsa21071:rsa21071-math-0003\" \/>, then it is an <jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"graphic\/rsa21071-math-0004.png\" xlink:title=\"urn:x-wiley:rsa:media:rsa21071:rsa21071-math-0004\" \/>\u2010system. R\u00f6dl and \u0160i\u0148ajov\u00e1 proved a sharp lower bound for the independence number of <jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"graphic\/rsa21071-math-0005.png\" xlink:title=\"urn:x-wiley:rsa:media:rsa21071:rsa21071-math-0005\" \/>\u2010systems. We consider the same question for <jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"graphic\/rsa21071-math-0006.png\" xlink:title=\"urn:x-wiley:rsa:media:rsa21071:rsa21071-math-0006\" \/>\u2010omitting systems. Our proofs use adaptations of the random greedy independent set algorithm, and pseudorandom graphs. We also prove related results where we forbid more than two edges with a prescribed common intersection size leading to some applications in Ramsey theory. For example, we obtain good bounds for the Ramsey number <jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"graphic\/rsa21071-math-0007.png\" xlink:title=\"urn:x-wiley:rsa:media:rsa21071:rsa21071-math-0007\" \/>, where <jats:italic>F<\/jats:italic> is the <jats:italic>k<\/jats:italic>\u2010uniform Fan. The behavior is quite different than the case <jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"graphic\/rsa21071-math-0008.png\" xlink:title=\"urn:x-wiley:rsa:media:rsa21071:rsa21071-math-0008\" \/> which is the classical Ramsey number <jats:inline-graphic xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" xlink:href=\"graphic\/rsa21071-math-0009.png\" xlink:title=\"urn:x-wiley:rsa:media:rsa21071:rsa21071-math-0009\" \/>.<\/jats:p>","DOI":"10.1002\/rsa.21071","type":"journal-article","created":{"date-parts":[[2021,12,14]],"date-time":"2021-12-14T10:04:00Z","timestamp":1639476240000},"page":"493-519","update-policy":"http:\/\/dx.doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Independent sets in hypergraphs omitting an intersection"],"prefix":"10.1002","volume":"61","author":[{"given":"Tom","family":"Bohman","sequence":"first","affiliation":[{"name":"Department of Mathematical Sciences Carnegie Mellon University  Pittsburgh Pennsylvania USA"}]},{"given":"Xizhi","family":"Liu","sequence":"additional","affiliation":[{"name":"Department of Mathematics, Statistics and Computer Science University of Illinois Chicago  Chicago Illinois USA"}]},{"given":"Dhruv","family":"Mubayi","sequence":"additional","affiliation":[{"name":"Department of Mathematics, Statistics and Computer Science University of Illinois Chicago  Chicago Illinois USA"}]}],"member":"311","published-online":{"date-parts":[[2021,12,14]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF02579451"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/0097-3165(82)90049-8"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/0097-3165(80)90030-8"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1007\/s10623-011-9555-4"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1002\/rsa.20667"},{"key":"e_1_2_7_7_1","first-page":"3","article-title":"Teoria statistica delle classi e calcolo delle probabilita","volume":"8","author":"Bonferroni C.","year":"1936","journal-title":"Pubblicazioni del R Istituto Superiore di Scienze Economiche e Commericiali di Firenze"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00493-014-3219-8"},{"key":"e_1_2_7_9_1","doi-asserted-by":"publisher","DOI":"10.1112\/plms\/s3-36.2.369"},{"key":"e_1_2_7_10_1","doi-asserted-by":"crossref","unstructured":"R. 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