How to note a segment (a part) of a larger vector?

Say I have

$$
\vec{x} = \begin{pmatrix}x\_1 & x\_2 & x\_3 & x\_4 & x\_5\end{pmatrix}
$$

And I want to extract a specific section:

$$
\vec{y} = \begin{pmatrix}x\_2 & x\_3 & x\_4\end{pmatrix}
$$

Is there a clear and generally accepted notation for this?  

Basically what in MATLAB or Python would be `y = x[2:4]`.

Would any reader understand $y=x\_{2:4}$?