A perspective on the The Fibonacci trace map
Also appears in collection : Jean-Morlet chair: Tiling and recurrence / Chaire Jean-Morlet : Pavages et récurrence
In this talk we explain how the Fibonacci trace map arises from the Fibonacci substitution and leads to a unified framework in which a variety of models can be studied. We discuss the associated foliations, hyperbolic sets, stable and unstable manifolds, and how the intersections of the stable manifolds with the model-dependent curve of initial conditions allow one to translate dynamical into spectral results.
 
     
	
                 
                 
	
                 
	
                 
	
               
	
               
	
               
	
               
	
               
	
               
	
               
	
         
	
           
                       
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
          ![$k$-sum free sets in $[0,1]$](/media/cache/video_light/uploads/video/2015-09-10_de_Roton-video--19cf70874d3c5af7378c268cab865b06.jpg) 
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
	
           
      
    