math-mode
I have to write some equations in latex, but I'm having trouble finishing them.
My Latex equation for image 1:
\widehat{f}(x,y)=median \left\{g(s,t)\right\}
My Latex equation for image 2:
A\oplus B = U A_{b}
How can I make a subscript below the formulas?
\documentclass{article}
\usepackage{amsmath}
\def\LRA{\Leftrightarrow\mkern40mu}
\pagestyle{empty}
\begin{document}
\begin{alignat}{2}
\LRA && A + B &= C + D \\
\LRA && C + D + F &= Y + K \\
\LRA && E &= F \\
&& X &= Z
\end{alignat}
\end{document}
If you put an accent over a single character, TeX uses information in the font metrics to shift the accent to take some account of the slope of the italic letters. Which is why the first one shifts. If you put an accent over a more complicated math list then it's just centered over the list.
Best Answer
You want
And
The important things being:
\undersetwhich takes two arguments, the first is put under the second.\mathrmto makemedianappear upright and differentiate it from a multiplication of 6 variables named m, e, d, i, a, and n.\{and\}need backslashes because{and}are part of the LaTeX base language.\cupwhich is a nicer symbol for a union.