摘要
Inthispaperthefixedpointindexproblemforaclassofpositiveoperatorswithboundarycontrolconditionsisdiscussed,andsomesufficientconditionsforthefixedpointindextobeequalto1or0aregiven.Moreover,ageneralfixedpointtheoremofexpansionsandcompressionsforconeisobtained,whichgeneralizesandimprovesthecorrespondingresultsof[3,8,9].Asanapplication,weutilizetheresultspresentedabovetostudytheexistenceconditionsofpositivesolutionsofnonlinearintegralequationsmodellinginfectiousdiseases.
出版日期
1989年05月15日(中国期刊网平台首次上网日期,不代表论文的发表时间)