摘要
Consider the geometric characteristic of the asymptotically stable cone of linear differential difference equations x’(t)=A_ox(t)+sum from A_kx(t—γk·r). Two of the open problems proposed by Jack Hale in 1982 have been solved.
Consider the geometric characteristic of the asymptotically stable cone of linear differential difference equations x'(t)=A_ox(t)+sum from A_kx(t—γk·r). Two of the open problems proposed by Jack Hale in 1982 have been solved.
