# “Hidden content” in a question

I recently noticed this question: Symmetric Group $$S_n$$ is generated by transpositions. (Here is link to the revision at the time.)

This question looked that way:

I have to proof, that a symmetric group 𝑆𝑛 S n , with n>=2 with support {a1, a2, ... , ap} such that σ(ak)= ak+1 (when k

I started by verifying that σ(1) • (1,2) • σ(2) = (2,3) Transposition. Then by iteration I show that the next Transposition (3,4) = σ(1) • (2,3) • σ(2)... Iterating until Transposition (n,1). after this how can I then proof that 𝑆𝑛 S n is generated by this Transposition?

Thanks!

Note the unfinished sentence at the end of the first paragraph.

However, when I clicked the "edit" button, the end of the first paragraph was there. Why is it not displayed?

• I guess it's because the < is interpreted as an open HTML tag. Not sure why it's not a problem when the question is in edit mode. One way to fix it is to replace the < with an HTML code: &lt;. Of course, LaTeX would be preferable. – Mark McClure Oct 16 at 14:02

When you have k<p the parser breaks down and omits the remainder of the paragraph.
This is one of the main reasons why it is important to properly format questions like this with $$\rm\LaTeX$$.