This preview shows page 1. Sign up to view the full content.
Unformatted text preview: = n ( n + 1) 2 . 5. Show that J a := { ka : a Z } is an ideal of Z . 6. Use the Well Ordering Principle to show that there is no integer such that < < 1 . 7. If a  bc and a and b are relatively prime then a  c . 8. Let a , b be both not zero. Let d = gcd( a,b ). There are integers x , y such that ax + by = c if and only if d  c . 1...
View Full
Document
 Spring '08
 Staff

Click to edit the document details