Im trying to understand the following. We have l_1(R)=( x=x_n in l(R): summation from n=1 to infinity for absolute value of x_n). It says that this summation converges, but converges to what?(adsbygoogle = window.adsbygoogle || []).push({});

Also , its says (1) is not in l_1(R) but 1/n^2 is. Can some one explain how these are so.

This is not homework, just trying 2 gain an understanding. Thanks.

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# Norms in sequence spaces.

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