- #1
StarTiger
- 9
- 1
Homework Statement
Limit of {sn} as n goes to infinity exists provided for all sigma >0 there exists some integer N such that |sn-L| < sigma where n greater than or equal to N.
Prove equivalent to alternate definition:
limit exists provided that for every positive inteer m there exists a real number N such that |sn-L| < 1/m whebever n greater than or equal to N.
The Attempt at a Solution
Well, I know sigma can be anything, so you can replace sigma with 1/m and get Alternative Definition except for N being an integer rather than a real number. I get the idea that N(as fn of sigma) has to be an integer and N(as fn of 1/m) has to be a real number. Actually setting up definition 1 <=> definition 2 is confusing me though.