This tag is for questions regarding the display of fractions and related problems.

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9
votes
2answers
442 views

New command in TeX for fraction

Now I need to redefine the fractions as follows By writing \fr{2,3}, we get $\frac{2}{3}$. How can I achieve this? I have tried \newcommand{\fr}[1,2]{\frac{#1}{#2}} but got wrong.
0
votes
2answers
279 views

How to control the font size in complex fractions? [duplicate]

I am writing an equation and for part of that, I have the following fraction: \begin{eqnarray} \frac{u_{fe}\frac{\frac{u_{i,j,k}^n+u_{i,j,k}^{*}}{2}+ \frac{u_{i+1,j,k}^n+u_{i+1,j,k}^{*}}{2}}{2}- ...
4
votes
1answer
95 views

Aligning the Left Hand Side of a big equation with fraction

After spending quite some time making sure this wasn't already answered, I decided to post this anyway, as I haven't found what I'm looking for. I have this equation with nested fractions, and I want ...
2
votes
1answer
207 views

ConTeXt: How to create nice-looking fractions

Background Looking to create vulgar fractions in the current font such those in Unicode. LaTeX has the nicefrac package that provides, as the name implies, fractions where the dividing line is a ...
8
votes
2answers
263 views

How to change horizontal alignment of \frac?

Typing \frac{W+W^*}{2} gives a fraction in which the denominator appears to the eye to be in the wrong position. Is there a way to correct this, i.e. place the 2 in under the + (without using ...
3
votes
1answer
129 views

How to properly display a product within a fraction?

I have product inside a fraction, like this: \[ \phi_n(t)=\frac{t^n-1}{\prod_{\substack{ d \mid n,\\ d<n.}} \phi_d(t)} \] And that places the "limits" of the product on it's side, not ...
8
votes
2answers
260 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 ...
3
votes
1answer
405 views

How to create A/B with LaTeX/LyX?

I want to create frac with this style: Is this possible? I try to find another way, alternative to xfrac.
18
votes
5answers
660 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.
9
votes
2answers
211 views

Underbrace in denominator with () [] {} (howto)

I would like to put an underbrace correctly under the denominator of a expression but what I get is wrong because of the (). Alternatively I create another line in the text ...
9
votes
1answer
137 views

If fractions are Inner atoms, why don't they have thin spaces on either side?

The TeXbook says that fractions are Inner atoms. But if so, they don't seem to have thin spaces on either side when Inner atoms have them. For instance, in \documentclass{article} ...
6
votes
1answer
800 views

Nested exponents look too small

When I type $e^{\frac{\ln(r)}{2^{j}}}$, the output is: In the exponent, the denominator looks like 2j (especially in normal font), but it is supposed to look like 2^j. How can I make the term 2^j ...
18
votes
3answers
3k 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 ...
6
votes
1answer
1k views

equal size numerator and denominator

I am trying to size the numerator and denominator of the below equation so that they are equal in size. I have not had much luck suggestions are appreciated. \begin{equation} \sum_{i=1}^{n} ...
5
votes
3answers
162 views

Improper display of parentheses in fraction of fraction

The following code: $\dfrac{\left( \dfrac{\left( \dfrac{1}{2}\right) }{2}\right) }{2}$ gives a nasty output: It seems that the $\left( \right)$ command doesn't do the job. Any idea how to solve ...
6
votes
1answer
278 views

Create multiline fraction

How to create an equation like in the image below. I tried to use \cfraq and \hline but with no success. I am asking for the layout only, not the formulae.
2
votes
1answer
58 views
14
votes
3answers
351 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 ...
6
votes
2answers
4k 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 ...
4
votes
1answer
358 views

Underlining fractions

I need to be able to underline equations involving fractions, which are aligned using the alignedat environment from amsmath. To be able to underline at all, I'm using the solution from this question ...
1
vote
3answers
264 views

Fraction in brackets

I want to have a fraction in brackets. Something like: $${\log C \brack \log 2}$$, but with the line in the middle. I know this possibility: $$\left[\frac{\log C}{\log 2}\right]$$. Nonetheless, does ...
2
votes
1answer
603 views

Compound fractions (i.e., “mixed numbers”) look bad in displaystyle

I find that in display mode, fractions that represent simple rational numbers look way too big. For instance, consider this case: $$ a = \frac12(b+c) $$ The fraction gets inordinately large ...
4
votes
1answer
412 views

Improve inline fraction style with Quattrocento font

I'm using the Quattrocento font in a beamer presentation (which my audience likes a lot) but I have a small problem with inline fractions like 33 1/3, which do not look very good. Specifically the "1" ...
3
votes
0answers
201 views

Two fractions with the same size [closed]

Can anyone tell me how I can make $A=\frac{1}{a} \frac{1}{1+\frac{a}{b}}$ look the same? So I want $a$ to be on the same height as the other denominator. MWE \documentclass[11pt]{article} ...
1
vote
1answer
226 views

Using \sqrt in the denominator of the \frac command [closed]

Below is the following code that I am trying to use in math mode. When I do this it distorts the sqrt line and blends into the fraction line. z=$\frac{ Estimate_{t} - Estimate_{t-1}} \sqrt{Var_{t} + ...
3
votes
2answers
3k views

Bigger fractions without using \dfrac

Is there any way to make fractions bigger? I know one can use \dfrac but is there any code I can use in the document preamble to make all fractions bigger?
9
votes
2answers
471 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 ...
2
votes
2answers
2k views

Line spacing with inline formula including fraction

I have a fraction in an inline formula as can be seen in the picture. \dfrac from the amsmath package was used. (This is article class with 14pts and linespread 0.9.) Though the space between the ...
2
votes
1answer
3k views

Fractions with `\dfrac` cause compile error

I'm new to LyX. I'm writing my next homework with it to give it a try. My example code is below: % Preview source code %% LyX 2.0.5.1 created this file. For more info, see http://www.lyx.org/. %% ...
4
votes
1answer
206 views

Bracing fraction numerator or denominator to the left or right

I have a fraction with further fractions in both the numerator and denominator. I wish to label the fractions in the numerator and denominator with braces to the right. I would like these braces to ...
9
votes
3answers
354 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} ...
5
votes
4answers
12k views

Subscripts in partial derivatives

I would like to print the partial derivative operator $\frac{\partial}{\partial k_x}$, but the spacing and the length of the bar bug me a little. I would really like the fraction to be typeset as ...
8
votes
3answers
622 views

array within frac, using nath package

I use the nath package to get automatically-sized delimiters, but it breaks having a \begin{array}{…}…\end{array} within a \frac{}{} (simply removing the \usepackage{nath} below fixes the example, but ...
2
votes
2answers
2k views

How to put several lines in the numerator of a fraction?

When I use \\ it breaks the frac layout. Now I come up with the following solution: $$\frac{{O\vdash e_1:T_1 \atop O[T_1/x]\vdash e_2:T_2}}{O\vdash (let\ ((x e_1))\ e_2):T_2}$$ But it gives two ...
3
votes
1answer
229 views

Use catcode for alternative way of writing fractions

Writing fractions using different syntax would sometimes be useful, instead of using \frac{ab}{cd}, I would prefer to write something like \frac{ab⌂cd} where the Unicode ⌂ is the }{. n.b., I don't ...
6
votes
1answer
179 views

Can't make a fraction

I had been tried for a long time, but it had worked, I have this code, hope you can help me: \documentclass{article} \usepackage{amsmath} \begin{document} \begin{pmatrix} m\\ n \end{pmatrix} = ...
5
votes
1answer
764 views

Aligned numerator and denominator in \frac or any other variant

Is there a way to align the numerator and the denominator of a fraction? Consider two fractions (from a SIAM paper) The denominator (k!) is nicely centred in the first fraction. However in the ...
3
votes
3answers
1k views

Changing fraction style in LaTeX as generated by Matlab

A= [0.7577 0.7060 0.8235 0.4387 0.4898 0.7431 0.0318 0.6948 0.3816 0.4456 0.3922 0.2769 0.3171 0.7655 0.6463 0.6555 0.0462 0.9502 0.7952 ...
52
votes
3answers
14k 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?
37
votes
2answers
1k 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 ...
2
votes
2answers
339 views

Improve a fraction's appearance

I am using \documentclass[a4paper,11pt]{article} \usepackage{kerkis} \usepackage{amsmath} \usepackage{amssymb} \usepackage{amsfonts} \usepackage{amsthm} \begin{document} \begin{equation} ...
9
votes
4answers
1k 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. ...
31
votes
5answers
7k 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 ...
3
votes
1answer
608 views

Fraction whose items are words

I have troubles writing a fraction whose items are words not numbers. In a nutshell I should write: minaccia/vulnerabilità --> this is the numerator ---------------------- contromisure ...
5
votes
1answer
223 views

Expanding line height when equations have displaystyle fractions

In my document, I have got a lot of equations in inline mode, like: \documentclass{article} \begin{document} Eu sit tincidunt incorrupte definitionem, vis mutat affert percipit cu, eirmod ...
1
vote
1answer
190 views

Unsqueeze the fraction

For the LaTeX code below, \begin{equation} Fitness(\CS)= \begin{cases} 0.5 + 0.5 \cdot G(\CS) & if\ V(\CS)=0 \\ 0.5\cdot G(\CS)-\frac{V(\CS)}{V_{Tot}(\CS)} & ...
3
votes
2answers
309 views

Multiple horizontal line separators? Multiple \over-s?

How to code the syntax like fraction, but with more than 2 components? Fractions consist of numerator and denominator while I need more. In other words: how to code column-matrix with horizontal lines ...
3
votes
1answer
383 views

Displaying numbers above each other (like a fraction), but without horizontal line and with less vertical space between them

I want to have a 2x2 matrix of arrows (\uparrow and \downarrow) to illustrate electronic spins. I've managed to get a fraction without the horizontal line using \genfrac, but I can't figure out how to ...
14
votes
1answer
1k 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} % ...
19
votes
6answers
2k 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} ...