CHAPTER 1. NUMBER SETS

31. 
    

    oÉ~ä=kìãÄÉêë==
    råáçå=çÑ=ê~íáçå~ä=~åÇ=áêê~íáçå~ä=åìãÄÉêëW=oK=

    
    


32. 
    

    çãéäÉñ=kìãÄÉêë ={}ñ+áóöñ∈o~åÇ ó∈oI==
    ïÜÉêÉ=á=áë=íÜÉ=áã~Öáå~êó=ìåáíK

    
    


33. 
    

    k⊂w⊂n⊂o⊂`=

    
    

=== =

=

Figure 5.

= = = = = =