o Then o See proof |

**Proof:** We will prove (\ref{eqn:nrm1inf1}), leaving the other
results as an exercise.

The proof strategy will be to show that

This shows that .

Now, let equal the index such that and let equal the th unit basis vector. Recall that . Then

This shows that .

LinearAlgebraWiki: Norm/Theorem3/proof (last edited 2008-01-28 04:52:46 by MarthaGanser)