Typo in Erdös-Gallai theorem

```
There seems to be a small typo in Theorem 1.31 (the Erdös-Gallai theorem).
On the right end of the inequality, min{k, d_i} should be min{k, d_j}.
```

Original issue reported on code.google.com by `SuprD...@gmail.com` on 18 Dec 2013 at 11:21
