I come from Norway, and here the formatting of maths are a little bit different than in the U.S. and the UK. If you want to factorize 25, you know that it is 5 times 5. How would you write this with LaTeX? In Norway we would write 5⋅5, and as far as I've seen, with LaTeX, you would write:
$5\times 5$ ( 5 x 5 )
Is there a difference, or is one of them wrong? Which one actually means times?