gopherpedia.com/0/B-tree

text download stops at `.` line character.  Verify if this is a problem with gopherpedia or my client.

```
and  give a slightly different expression for the worst case height
(perhaps because the root node is considered to have height 0).
: h \le \left\lfloor \log_{d}\left(\frac{n+1}{2}\right) \right\rfloor
.
```
