Let X := {(a(n)): summation|a(n)| < infinity{ be the space of absolutely convergent

LeoL

New member
Joined
Jun 6, 2008
Messages
16
Reaction score
0
Points
1
Let X := {(a(n)): summation|a(n)| < infinity{ be the space of absolutely convergent

sequences. Define the? l1 and l(infinity) metrics on this space by
d(l1)(a(n), b(n)) := summation |a(n) - b(n)|
where n=0 at first and goes to n = infinity.
d(l(infinity))(a(n), b(n)) := sup|a(n) - b(n)|

I hope this is clear if not let me know. Show that there exist sequences x(of elements of X which are convergent with respect to the d(l(infinity)) metric but not with respect to the d(l1) metric
 
Back
Top