简介:AKekuléanbenzenoidsystemisonewithKekuléstructures.Afixeddouble(single)bondofaKekuléanbenzenoidsystemHisanedgebelongingtoall(none)oftheKekuléstructuresofH.EssentiallydisconnectedsystemsareKekuléanpericondensedbenzenoidsystemswithsomefixeddoubleorsinglebonds.InthispaperanecessaryandsufficientconditionforaKekuléanbenzenoidsystemtobeanessentiallydisconnectedbenzenoidsystemwithfixeddoublebondsisgivenandrigorouslyproved.
简介:研究了一类奇摄动2m阶椭圆型方程解的多重边层现象.利用比较定理得到解的一致有效的渐近展开式.