Questions tagged [fractions]
This tag is for questions regarding the display of fractions and related problems.
543
questions
111
votes
7
answers
104k
views
How do I typeset arbitrary fractions like the standard symbol for .5 = ½?
I know I've seen somewhere how to typeset 1/2 as ½, but with arbitrary fractions (that is, a macro that takes two arguments and makes the first denominator and the second numerator...). Now I can't ...
- 15.2k
109
votes
4
answers
93k
views
What is the difference between \over and \frac?
What is the difference between
{some-expression}\over{another-expression}
and
\frac{some-expression}{another-expression}
?
Which is preferable?
- 1,217
83
votes
1
answer
90k
views
How to get a little frac
I am wondering how to make a fraction in LaTeX small enough to fit on a line, or at least just a little larger. I could have sworn I had seen this before but I just cannot find it.
In particular, I ...
- 4,049
53
votes
2
answers
3k
views
Improved kerning in fractions?
Question
How can I apply selective kerning within the numerator and denominator of an inline fraction? Specifically, I'd like to:
Tighten kerning after the numerator if it ends in 7
Loosen kerning ...
- 13.6k
43
votes
3
answers
27k
views
Guidelines for typesetting fractions
I realize that this question is to some extent subjective. However, I suspect that there are some common standards regarding how fractions ought to be typeset in mathematics. The guide Mathematical ...
- 3,116
42
votes
5
answers
80k
views
How to print \frac{1}{2} by a single Unicode character?
I am looking for a command which would print simple fractions like 1/2, 1/3 etc using glyphs available in modern TTF/OTF fonts. Ideally, I want this command to output ordinary \frac{1}{2}, \frac{1}{3} ...
- 13.2k
41
votes
2
answers
129k
views
Elegant fractions in one line
What solution do you think is more elegant for a simple fraction that should be displayed in just one line?
My examples are
$x_F \equiv \frac{p_z}{p^{\rm MAX}_{z}} = \frac{p_z}{\sqrt{s}/2}$
$x_F \...
- 731
37
votes
1
answer
379k
views
Vertical spacing between numerator and division symbol in \dfrac
How can I fix the vertical spacing between the numerator and the division symbol when entering fractions.
Eg. in the following code, the spacing between a and the division symbol is greater than one ...
- 3,571
35
votes
3
answers
56k
views
How to make fractions in powers look good
Quick question. When I type $e^{\frac{1}{2x}}$ it makes the fraction very small and hard to read. However when I type $e^{\displaystyle\frac{1}{2x}}$ it makes the fraction way to big. I guess in ...
- 363
35
votes
3
answers
38k
views
Smaller fractions in displayed formulae?
How do you make script-sized fractions in display mode?
In certain cases, I find that \frac-based fractions are too large for my tastes in displayed formulae. For example, I feel that the fractions ...
- 13.6k
32
votes
7
answers
18k
views
How to increase row height while using booktabs?
I'm making a table using booktabs. One of the columns contains a series of fractions.
\documentclass[12pt, letterpaper]{article}
\usepackage{nag}
\usepackage[margin=1.0in]{geometry}
\...
- 487
32
votes
7
answers
74k
views
A symbol for the quotient of two objects
One often needs a symbol to denote the quotient of two (algebraic) objects (e.g. quotient by a subgroup, subring, submodule etc.). In simple cases people use A/B. But when both A and B are complicated ...
- 513
27
votes
3
answers
1k
views
Superscripts appear in various weird places in fractions
This is a weird phenomenon.
Consider the following code:
\documentclass{article}
\begin{document}
$$Z^* \frac{Z^*}{Z^*}$$
\end{document}
It produces the following picture:
The asterisks appear ...
- 1,243
21
votes
6
answers
8k
views
Align denominator of fraction to left
The highlighted part has the equation centred, which looks rather imbalance with the top equation, is it possible to align the highlighted part to the left?
Below is the code I am using.
\begin{...
- 4,681
19
votes
3
answers
18k
views
Legendre symbol in theory of numbers
How can I get a Legendre symbol
,
which just used the dashed line instead of the fractional rule?
- 205
18
votes
3
answers
64k
views
Text-mode in fractions?
I want to have written words in a fraction but to have them in correct fraction form and not crude-looking. So, I have;
$\displaystyle\frac{Actual Value of Production}{Demand}$ x $100$
But it makes ...
- 181
17
votes
5
answers
4k
views
Cross Multiplying Two Fractions with Ovals Around the Appropriate Terms
I would like to implement something akin to the following in LaTeX, perhaps in tikz. I would be very grateful for any help.
- 2,533
17
votes
2
answers
611
views
Interesting recursive behaviour with \frac error
I have this code below. Obviously it's not actually valid code because there's no second argument to \frac, but nonetheless I'm curious why it produces what it does.
\[
\text{abc$\frac{123}$}
\]
...
- 181
17
votes
3
answers
966
views
How would you name these fraction macros?
I've got four macros now for typesetting fractions in text mode. The first writes them horizontally (shilling style, with a hyphen), the second writes them diagonally, the third writes them vertically,...
- 13.6k
16
votes
5
answers
41k
views
Proper display of fractions
Have a look at the following code:
\documentclass[letterpaper]{article}
\usepackage{amsmath,amssymb}
\begin{document}
$2-\frac{2}{1-\left(\frac{2}{2-\frac{2}{x^2}}\right)}$\quad
$2-\dfrac{2}{1-\...
- 28.3k
16
votes
3
answers
6k
views
How can you change the width of a fraction bar?
I have an equation using fractions of fractions - much like
\frac{\frac{a}{b}}{\frac{c}{d}}
However, all of the fraction bars are the same width. I'd like to make the central bar wider than the ...
- 265
16
votes
1
answer
14k
views
Annotating individual math terms with braces
I am trying to annotate individual terms of a mathematical expression, as depicted below.
The problem I get is that the comment seems to be taken as part of the fraction, which unnecessarily extends ...
- 2,365
16
votes
1
answer
5k
views
Reformat \frac depending on numerator/denominator size difference
Is it possible to detect cases where the second argument of \frac is much smaller than the first argument, and split it? Namely (I'm using a new macro name \wfrac to simplify things),
\wfrac{x}{2} % ...
- 44.5k
15
votes
6
answers
10k
views
How to typeset a continued fraction in the following format?
How does one typeset the following continued fraction as shown below?
Source: Notes on continued fractions and recurrence sequences by Alfred van der Poorten.
Note: Alf van der Poorten's style is ...
- 1,736
15
votes
2
answers
16k
views
15
votes
3
answers
2k
views
Frac or inference rule with dotted line
I would like to have a \frac or mathpartir-style inference rule with a dotted rather than solid line, so that I can put fractions into inference rules without overloading horizontal bar.
The ...
- 4,060
14
votes
4
answers
6k
views
TikZ Fill for Fraction Diagram
I'm trying to shade in one third of this circle. Obviously, it's not working. What did I do wrong?
I got no error messages for either of my attempts in the code below, but neither filled anything in....
- 3,001
14
votes
6
answers
11k
views
too little space between the bar on the denominator and the horizontal line
Please see below:
There is too little space between the horizontal line from \frac and the bar from \bar{h_1}. So, it is a little hard to read. Any alternative way to represent the upper bar? And, ...
- 9,308
14
votes
5
answers
8k
views
Fraction with longer line
I'm trying to display some axioms and operational rules with LaTeX.
Those are basically . They work quite well when used with frac, but it's not really nice, I'd like the fraction line to be a bit ...
- 327
14
votes
1
answer
17k
views
displaystyle, dfrac, dcases
Am I correct in saying that the dcases environment replaces \frac with \dfrac? The replacement only occurs at the outer-most level of \frac, so if I have
\documentclass{article}
\usepackage{...
- 757
14
votes
2
answers
1k
views
Automatically add fractions and reduce the result (if neccessary)
I'm trying to figure out how to reduce fractions. Adding fractions is no problem, see this example:
\documentclass[parskip]{scrartcl}
\usepackage[margin=15mm]{geometry}
\usepackage{tikz}
\newcommand{...
- 39.7k
14
votes
2
answers
530
views
Aesthetic issue in fractions
While I was typing a document related to special relativity, I came across this slight misalignment in \frac{V}{c}(shown with huge text size so that the effect is easily seen)
The 'problem' is that ...
- 287
14
votes
1
answer
535
views
Fractions' stretch and shrink [duplicate]
When TeX shrinks an equation, it only uses the shrink component of glue "at the outer level". For instance, numerator/denominator of fractions are not shrunk, as shown by the example below: first I ...
- 44.5k
13
votes
1
answer
1k
views
How and whether to fine-tune the vertical placement of a fraction line
This is a question about the aesthetics of mathematical typesetting, as well as a technical question about LaTeX.
I'm writing a lot of expressions like this:
(\log\frac{p_{i\to j}}{p_{j\to i}} in a ...
- 3,835
12
votes
4
answers
767
views
How to align 2 equations in fraction at `=`?
I was trying to answer this question on another stackexchange forum, to say that they could use Latex instead, only to find I can't figure how to do this in Latex myself.
Is it possible to have 2 ...
- 19.6k
12
votes
3
answers
2k
views
\frac command: height of the numerator vs height of denominator
I have the following code:
\begin{equation}
\underline{W}^1_{\,q,\rho} = \left\lceil
\frac{\sum\limits_{v \in
Q, v \neq q}\underline{C}_{\,v} + \sum\limits_{i=\rho+1}^{|\Omega^{(U)}_q|}p_i+
\sum\...
- 123
12
votes
4
answers
1k
views
In math mode, how do I make the fraction bar "invisible"?
I am trying to typeset a "fraction" without the fraction bar. I have tried to do this using the genfrac, but as in the example below, the numerator and denominator in genfrac are farther ...
- 1,207
11
votes
3
answers
1k
views
Minus sign not aligning with fraction
When I use subscripts and superscript with \frac the numerator and denominator looks very tight,
\documentclass[a4paper,12pt]{article}
\usepackage{mathtools,amssymb}
\begin{document}
\[e^{-\frac{(x-\...
- 369
11
votes
2
answers
1k
views
How do I typeset continued fractions in Pringsheim's concise notation?
I would like to obtain the following formatting so as to write continued fractions in my equations without wasting vertical space.
What I need is one command named \cFrac which writes one fraction ...
- 12.9k
11
votes
3
answers
439
views
uncommon form of continued-fraction expression
I have a copy of the text from the book to do. But I have been working in latex for a month and I have a problem with remaking these continued fractions.
My code is looking like this:
\[
\frac{n_{0}}{...
- 111
11
votes
1
answer
655
views
Why do \left( \frac{a}{b} \right) and \left( \frac{b}{a} \right) have different sizes?
Interestingly enough, I found that
\left( \frac{a}{b} \right) and \left( \frac{b}{a} \right) have different sizes in Display Mode.
What caused them to have a different size?
- 233
11
votes
2
answers
8k
views
Increase size of fractions on multiple lines
Inside a matrix, I have some very loaded (subscripts, greek letters, \breve) fractions:
\begin{equation}
Q_r = \begin{bmatrix}
\frac{\partial \breve{y}_r}{\partial \theta_1}\bigg|_{t_1} & \...
- 439
11
votes
1
answer
682
views
Correct typesetting of a formula with a long fraction
I have a two-column document and as you can see a long mathematical formula, consisting of a fraction, can't fit in the column width.
What I don't know is what is the right way to typeset such kind ...
- 4,634
11
votes
2
answers
2k
views
Color fraction bar
What would be the easiest way to create a fraction whose bar can be coloured as desired? I know one can use the \genfrac{left-delim}{right-delim}{thickness}{mathstyle}{numerator}{denominator} command ...
- 28.3k
10
votes
3
answers
430
views
Nicer alignment of x^*/2
I'm trying to typeset $\frac{x^*}{2}$, but I can't find a (simple) way to make the alignment look nice. So far, I've tried the following:
\documentclass{article}
\begin{document}
\begin{equation}
\...
- 15.2k
10
votes
2
answers
12k
views
How to make a nice fraction in subscript?
I wrote
\begin{equation}
M_{\frac{1}{2}}= ...
\end{equation}
but it doesn't look very nice. fraction is too small and and "tight", and when I add \dfrac that is too big. Any solution for this ?
- 369
10
votes
2
answers
1k
views
Interpret a/(b+c) as \frac{a}{b+c}
Is it possible to make LaTeX, or a similar software, interpret a/b as \frac{a}{b}?
Writing out (x+1)/((x)(x+2)) seems much easier than writing \frac{x+1}{(x)(x+2)}.
- 209
10
votes
2
answers
2k
views
Combinatorial notation (\choose) not working with \frac
I want to display the following
$p_N= \frac{{200 \choose 11}{ 200 \choose {N-189}}}{200 \choose N}$
However, texmaker gives me this error:
Does anybody know why is that? I have tried replacing the ...
- 253
10
votes
2
answers
11k
views
Practical consequences of using \over vs. \frac?
This question explains the difference between \over and \frac and it seems as though the most experienced members unanimously agree that \over is inferior (if not something to be outright regretted); ...
- 1,657
10
votes
1
answer
23k
views
Substitute \frac for a slash (/) only on inline math mode
I was wondering if there is a way to have LaTeX interpret $\frac{a}{b}$ as $a/b$, but \[\frac{a}{b}\] as \[\frac{a}{b}\].
It is a little tedious to change a inline equation $a/b$ to a display ...
- 1,117