Kronecker Delta
Updated: October 29, 2020
\begin{equation}
\delta_{ij}=
\begin{cases}
0 & \text{if i \(\neq\) j}\\\
1 & \text{if i \(=\) j}
\end{cases}
\end{equation}
\begin{equation}
\delta_{ij}=
\begin{cases}
0 & \text{if i \(\neq\) j}\\\
1 & \text{if i \(=\) j}
\end{cases}
\end{equation}