GreenMeeple

Prime superscript problem (e.g. x’_i) in Mathjax

When I was using Mathjax to create math formula in my blog post, I typed
((q_1, q_2), a, (q'_1, q'_2)) \in S \times \Sigma_{int} \times S and it rendered as

$((q_1, q_2), a, (q’_1, q’2)) \in S \times \Sigma{int} \times S$

However, when ((q_1, q_2), a, (q'_1, q'_2)) & \in S \times \Sigma_{int} \times S are seperated, they rendered properly.

$$((q_1, q_2), a, (q’_1, q’_2))$$

$$\in S \times \Sigma_{int} \times S$$

Maybe I should use \left and \right for (), just like \lbrace and \rbrace for {}?

So I typed \left( \left( q_1, q_2 \right), a, \left( q'_1, q'_2 \right) \right) \in S \times \Sigma_{int} \times S, didn’t work out:

$\left( \left( q_1, q_2 \right), a, \left( q’_1, q’2 \right) \right) \in S \times \Sigma{int} \times S$

Source of error