For example:

```
\begin{equation}
\delta % ok
\Delta % ok
\epsilon % ok
\Epsilon % error
\end{equation}
```

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# [Tex/LaTex] Why can I only use some capital greek letters inside the equations

###### Related Question

greekmath-modesymbols

For example:

```
\begin{equation}
\delta % ok
\Delta % ok
\epsilon % ok
\Epsilon % error
\end{equation}
```

## Best Answer

Uppercase epsilon is E.