Hello!
I am writing because I do not know how to write the following formula in MathJax
I have read this entire thread and information about extracurricular parentheses, but in this case it's not that simple.
Did you have problems with habits relating to of the old system?
What about tables? It is not possible to create them?
[itex]\small\overbrace{a,...,a}^{\mbox{k a's}}, \underbrace{b,...,b}_{\mbox{l b's}}\hspace{10} \large\underbrace{\overbrace{a...a}^{\mbox{k a's}}, \overbrace{b...b}^{\mbox{l b's}}}_{\mbox{k+l elements}}[/itex]
[itex]\small\overbrace{a,...,a}^{\mbox{k a's}}, \underbrace{b,...,b}_{\mbox{l b's}}\hspace{10pt} \large\underbrace{\overbrace{a...a}^{\mbox{k a's}}, \overbrace{b...b}^{\mbox{l b's}}}_{\mbox{k+l elements}}[/itex]
[itex]\left[ \frac{X}{Y}\right ][/itex]
On mathtex that gives