Planar maps;
Symmetry;
Local and global dynamics;
Saddles;
FIXED-POINT;
HOMEOMORPHISMS;
D O I:
10.1007/s10884-016-9561-3
中图分类号:
O29 [应用数学];
学科分类号:
070104 ;
摘要:
We study the dynamics of planar diffeomorphisms having a unique fixed point that is a hyperbolic local saddle. We obtain sufficient conditions under which the fixed point is a global saddle. We also address the special case of -symmetric maps, for which we obtain a similar result for homeomorphisms. Some applications to differential equations are also given.