I want to write as a math fraction 1/4 " ( a quarter of inch). I want to write this fraction out of an equation because is a characteristic of an element.
[Tex/LaTex] Write fraction out of equation
math-mode
Related Solutions
First, never use $\Pi$ when you obviously mean $\prod$. Second, I guess dots here between $R_i$ and $ID$ should be centered.
Here is what I got:
\documentclass{article}
\usepackage{amsmath}
\DeclareMathOperator{\Dist}{Dist}
\begin{document}
\pagestyle{empty}
\begin{displaymath}
MR(e) = \prod_{(R_i\cdot ID, R_j\cdot ID)}
\underset{\Dist_{sp}(r_i,r_j)\le\delta}{(R_i\bowtie R_j)}
\end{displaymath}
\end{document}
Here are two options:
\documentclass{article}
\usepackage{amsmath}
\newcommand{\subplus}{\mathbin{\genfrac{}{}{0pt}{}{}{+}}}
\newcommand{\subminus}{\mathbin{\genfrac{}{}{0pt}{}{}{-}}}
\newcommand{\subcdots}{\genfrac{}{}{0pt}{}{}{\cdots}}
\begin{document}
Option 1:
\[
1 - \begin{array}{@{}*{8}{c@{}}}
1 & & 1 & & 1 & & 1 \\ \cline{1-1}\cline{3-3}\cline{5-5}\cline{7-7}
1 & {}+{} & 1 & {}-{} & 1 & {}+{} & 1 & {}- \cdots
\end{array} =
\frac{\sqrt{5}-1}{2}
\]
Option 2:
\[
1 - \frac{1}{1} \subplus \frac{1}{1} \subminus \frac{1}{1} \subplus \frac{1}{1} \subminus \subcdots =
\frac{\sqrt{5}-1}{2}
\]
\end{document}
Option 1 sets the fraction as an array, using \cline to simulate the fraction lines. Option 2 uses amsmath to set a fraction with 0pt horizontal rule. Additional macros have been created to set these using \subplus, \subminus and \subcdots.
Best Answer
Without hassle, use
1/4as-is, or$\frac{1}{4}$(similar toamsmath's\tfrac{1}{4}) will typeset one quarter. If you want to add " in order to represent "inches", you could use$\frac{1}{4}''$, which is equivalent to$\frac{1}{4}^{\prime\prime}$.xfracalso produce so-called "vulgar fractions" via\sfrac{<num>}{<denom>}. Here are some examples:Note that there might be some spacing issues if you use two "text fractions" in successive lines, since the ascenders and descenders of the respective lines push them further apart (lines 1-3 exhibit this stretched look). As such, the "vulgar fractions" are sometimes preferred, since they take up less vertical real estate.