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A Class of Planar Surfaces in Surface×I
作者姓名:雷逢春  高大新  张影
作者单位:LEI Feng chun (Department of Mathematics,Jilin University,Changchun,130023) GAO Da xin (The Second Aeronaugical Institute of Airforce,Changchun,130022)ZHANG Ying (Department of Mathematics,Jilin University,Changchun,130023)
基金项目:TheNSF(1 960 1 0 1 9)ofChinaandMorningsideCenterofMathematics,ChineseAcademyofSciences
摘    要:Werestrictourconsiderationtoorientableandcompactcategory .Fordefinitionsandterminology ,seeforexample ,[1 ]and [2 ]. LetSbeaclosedorientablesurfacewithpositivegenus .Inthispaper ,MalwaysdenotesS×I ,andS0 =S× 0 ,S1=S× 1 .AnannulusAinMwithitstwoboundarieslyinginS0andS1r…

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