1 Introduction  
2 Gathering Fat Mobile Robots  
2.1 The Original Model  
2.2 Main Results  
2.3 Fat Robots  
2.4 Further Research  
3 The Boundary Patrolling Problem by Mobile Robots  
3.1 The Problem  
3.2 Modeling Mobile Robots  
3.3 Solutions and Limitations  
3.4 Further Research