Please explain the solution (Real Analysis)

Join the discussion
Registration is free. Ask a follow-up in this thread, or start your own.
3 replies · 2K views
phillyolly
Messages
157
Reaction score
0
 

Attachments

  • pic.jpg
    pic.jpg
    60.2 KB · Views: 483
Physics news on Phys.org
My understanding shuts down in the second paragraph, second sentence.
 
Do you understand why [tex]\textbf{N}^k[/tex] is countable?