Math & Science ⇒ Hypothesis Testing Symbol

[bhupala]

Dear friends,

how do we generate the math expression given in the attachment?


Thanks in advance,
Bhupala.

[Frits]

The symbol is \gtreqless. You'll need \usepackage{amssymb} for that.

[localghost]

For such cases it is helpful to consult Detexify. Another good source is »The Comprehensive LaTeX Symbol List«.


Best regards and welcome to the board
Thorsten

[bhupala]

Hi,

thanks for the help. But still I couldn't make out how to add the 1_D and 0_D properly as shown in the figure. Can anyone give the complete code that gives the output as shown in the figure?

thanks in advance,

Bhupala.

[Frits]

Probably something like this:

Code: Select all

\documentclass[]{article}
\usepackage{amsmath,amssymb}

\begin{document}
\begin{align*}
	&1_{D} \\[-5pt]
	&\gtreqless \\[-5pt]
	&0_{D}
\end{align*}
\end{document}

The argument between the square brackets, [-5pt], correspond to the linespacing. So in this case the linespacing is reduced by 5pt.

[localghost]

You should tell us in which context you want to typeset this expression (e. g. equations). There are several solutions to this problem.

[bhupala]

Dear friends,

sorry for wasting you time. This is what finally I wanted.

Thanks,
Bhupala

[localghost]

In this case you should typeset this expression as a mathematical operator. This is done by the \mathop command which places the two arguments as some kind of limits.

Code: Select all

\documentclass[11pt]{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{mathtools}        % loads »amsmath«
\usepackage{amssymb}

\begin{document}
  \[
    (r_1-1)^2+(r_2-\tfrac{1}{2})^2\quad\mathop{\gtreqless}_{0_D}^{1_D}\quad(r_1+1)^2+(r_2-1)^2+\ln\left(\frac{P_1}{P_2}\right)
  \]
\end{document}

Note that for other cases a different method might be better to get and align this sign.

[Mohamed]

Hi everybody!

I saw this post when I was searching for a way to write the symbol for binary hypothesis testing problem. I found a solution and I wanted to share with you .

Here is a simple example:

Code: Select all

\documentclass[]{article}
\usepackage{amsmath,amssymb}

\begin{document}
  \[
    \underset{H_0}{\overset{H_1}{\gtrless}}
  \]
\end{document}

You can see what you get in the attached file.


Hope this can be helpful!
Mohamed