| |
| | Absolute and Conditional Convergence |
 | | If the partial sums of the positive terms of s are bounded, and the partial sums of the negative terms of s are bounded, then s would be absolutely convergent. |
 | | Given ε, find an n such that the partial sums of the original series (beyond n) are within ε/2 of s, and at the same time, the terms of the series (which go to zero) are bounded by ε/2. |
 | | The remaining partial sum is within ε/2 of s, and the last term, which we can bring back in, is bounded by ε/2. |
| www.mathreference.com /lc-ser,abs.html (807 words) |
|