摘要
ForagraphGandanintegerr≥1,Gisr-EKRifnointersectingfamilyofindependentr-setsofGislargerthanthelargeststar(afamilyofindependentr-setscontainingsomefixedvertexinG),andGisstrictlyr-EKRifeveryextremalintersectingfamilyofindependentr-setsisastar.Recently,HurlbertandKamatgaveapreliminaryresultaboutEKRpropertyofladdergraphs.Theyshowedthataladdergraphwithnrungsis3-EKRforalln≥3.Thepresentpaperprovesthatthisgraphisr-EKRforall1≤r≤n,andstrictlyr-EKRexceptforr=n-1.
出版日期
2014年03月13日（中国期刊网平台首次上网日期，不代表论文的发表时间）
