These all print on the same line! Better:
```
    .. math::                                                           
        \mathrm{B}(a,1) = \frac{1}{a} \\
        \mathrm{B}(a,b) = \mathrm{B}(b,a) \\                
        \mathrm{B}(a,b) = \frac{\Gamma(a)*\Gamma(b)}{\Gamma(a+b)}
```