I have seen in a couple of posts, for example Here, that the wiki source code, which is written in latex, isn't visible.
Why is this happening? I tried edit the above question, and it didn't seem to help. (I doubt that only I am having this problem.)
Also, I don't know if I tagged this question correctly, please let me know if I should change it.
Based on This discussion, I changed the math rendering to "common html" and it fixed the issue.