Equation numbering in Jupyter notebooks

Question

The fact is, that in official documentation Jupyter - motivating examples stands

Equation numbering and referencing will be available in a future vers

Answer 1

Here is a working example, to be entered in a markdown cell:

\begin{equation*}
\mathbf{r} \equiv \begin{bmatrix}
y \\
\theta
\end{bmatrix}
\label{eq:vector_ray} \tag{1}
\end{equation*}

Vector **r** is defined by equation $\eqref{eq:vector_ray}$

It's self explanatory but here's some details:

\label : name describing he equation

\tag : the label appearing next to the equationcan be a number or letters

\eqref : reference to the labeled equation

This will be shown as: