Paper 2, Section II, E

Dynamical Systems
Part II, 2019

For a map F:ΛΛF: \Lambda \rightarrow \Lambda give the definitions of chaos according to (i) Devaney (Dchaos) and (ii) Glendinning (G-chaos).

Consider the dynamical system

F(x)=ax(mod1)F(x)=a x \quad(\bmod 1)

on Λ=[0,1)\Lambda=[0,1), for a>1a>1 (note that aa is not necessarily an integer). For both definitions of chaos, show that this system is chaotic.