I'm using MiKTeX 2.9 on Windows 7 with Texmaker

and I'm trying to left align some equations like these:

```
\usepackage{amsmath}
\begin{flalign}
a) I_g : N_{log} \rightarrow M\left(p, p, \phi \right) \mbox{is
compact.} \nonumber \\
b) I_g : N_{log}^0 \rightarrow M\left(p, p, \phi \right) \mbox{is
compact.} \nonumber \\
c) \int \limits _ {\mathbb{D}} \frac{\left(g
\left(z\right)\right)^p}{log \left( \frac{2}{1- \mid z \mid
^2}\right)^p} \frac{\phi^p \left(|z|\right)}{1- \mid z \mid } d
A(z) < \infty .
\end{flalign}
```

I get the message:

```
Package amsmath Error: Erroneous nesting of equation structures;
(amsmath) trying to recover with `aligned'.
```

## Best Answer

I see this an abuse of

`flalign`

: your readers will have a hard time at guessing whether the number refers to all three conditions or just to the integral.You could use

`aligned`

, so the number would be vertically centered:You might consider the following

`subequations`

approach:You can use

`\eqref{global}`

for referring to the common number, but also`\eqref{particular-c}`

for referring to the third condition.