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

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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} ...
10
votes
3answers
672 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 ...
4
votes
1answer
1k views

issues with fractions

I have: \usepackage{nicefrac } \begin{align*} &= \frac{2}{\sqrt{2y+1}\sqrt{2 \pi}} \exp \left( -y-\nicefrac{1}{2} \right) &&\forall y \in [-\frac{1}{2} , \infty) \\ &= ...
4
votes
3answers
132 views

Keep numerator inline with rest of equation

In the following example, I would like to to keep the Q''(p) on the same line as the rest of the equation, and put the vinculum and 2 underneath. \documentclass[12pt,reqno]{amsart} ...
1
vote
1answer
467 views

Bold fraction line

I would like to use a "bold style" for the fraction line in a math formula. I've seen it in some PDFs, but I do not know the proper command.
9
votes
1answer
272 views

How to improve the looks of a fraction?

We may notice that the numerator and denominator in the following fraction are not aligned. And, to me it does not look good. How to align the numerator and denominator? \documentclass{article} ...
2
votes
0answers
133 views

How to typeset a continued fraction in the following style? [duplicate]

Possible Duplicate: How do I typeset continued fractions in Pringsheim's concise notation? How to type a continued fraction in displaystyle as shown below? Source: Fischler, Stéfane, ...
53
votes
3answers
15k 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?
5
votes
1answer
1k views

How to make slash (/) paste with correct Unicode codepoint depending on context?

Unicode offers different characters for the slash: U+002F (/) for the ordinary slash U+2215 (∕) for the mathematical division operator U+2044 (⁄) to designate vulgar fractions How can I have these ...
11
votes
5answers
2k 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
vote
1answer
119 views

How to avoid a continuous fraction line going through the equals sign in MathJaX? [closed]

When I use Math.SE, and I type a equation such as: I get this continuous line. Is there a way to avoid this?
7
votes
1answer
9k 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 ...
12
votes
1answer
5k 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} ...
3
votes
1answer
5k views

How can I write a latex fraction without a bar? [duplicate]

Possible Duplicate: Separate long math text under sum symbol into different lines? I'm trying to write a math formula like this: \sum_{ \frac{n=0}{(n+k-i) \text{~even}} }^{k-i} This ...
9
votes
2answers
482 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 ...
4
votes
1answer
1k views

\text{} in a fraction but spread over two lines

Rather than try to describe in words or by way of a MWE, I have uploaded a picture of the desired result. I know how to create all the components (e.g. \frac{}{} \text{}, ^{}) of this fraction, except ...
6
votes
1answer
219 views

About shorthand \frac

It is possible to write \frac 2 4 or \frac \pi 4 to get 2/4 and \pi/4, respectively. However, it is not possible to write \frac \sqrt{2} 2 to get \sqrt{2}/2. Are there consistent rules on 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} % ...
8
votes
3answers
633 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 ...
7
votes
4answers
6k 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 ...
3
votes
1answer
621 views

Fraction with doubled line

Is there a way to make the fraction line look like the equality (=) sign, i.e., to have two parallel horizontal lines with a little gap in between? Many thanks!
16
votes
2answers
10k 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 ...
4
votes
1answer
1k views

Fraction in Superscript

\documentclass[a4paper]{article} \usepackage{amsmath} \usepackage{fontspec} \setmainfont[Script=Devanagari]{Sanskrit 2003} \newcommand\sufr[2]{\textsuperscript{$\frac{#1}{#2}$}} \begin{document} ...
5
votes
2answers
208 views

how to lower last term in a continued fraction after a diagonal row of dots?

How can I lower the last term of a continued fraction when it follows a diagonal row of dots?
15
votes
3answers
653 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 ...
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 ...
7
votes
1answer
330 views

How to add quotation marks to fractions?

As the title says I want to add quotation marks around a fraction in \displaystyle mode. My first try looks very unnatural, as you can see ^{``}\frac{1}{0^-}^" The problem is with the first ...
5
votes
1answer
484 views

How to automatically add parentheses around fractions?

Is there any way to make LaTeX automatically put parentheses around a \frac if it is followed by a superscript expression?
6
votes
3answers
678 views

Suggestions for splitting a large fractional equation?

I have seen a number of questions detailing specific means for how to break down a given equation, however I am more interested in the design at this point. That is, I'm not sure what part of this ...
4
votes
1answer
10k views

commath, \dfrac and \tfrac

I'm using the commath package for its nice \od and \pd functions, but I find it uses \tfrac internally. It seems to have an 'if-then' clause to sometimes use \dfrac but it never does so in my tests: ...
2
votes
2answers
194 views

Can I not use the align & operator within a \frac?

This code is causing LaTeX to throw an error: Missing } inserted. It appears to be because I put a & inside a \frac command (on line 4). I feel as though it should be possible to accomplish my ...
6
votes
3answers
476 views

Define my own xfrac command?

Is it possible to create my own xfrac command - without using that package (it is giving me too much trouble)? I know you can do superscript, subscript to make a fraction look. Can I do something ...
1
vote
0answers
128 views

How to keep alignment consistent with non-LaTeX contents? [closed]

I am using "almost LaTeX" from the JetPack plugin for my WordPress blog where I post course work. How do I get the generated formulae to centre on the line so the equals sign lines up with the normal ...
11
votes
1answer
3k 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 ...
9
votes
5answers
2k 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, ...
7
votes
2answers
302 views

How to stop fractions in display equations from running into each other?

Is there some standard way to create multiple display equations like the following without having to use: \renewcommand*{\arraystretch}{2} (so that the two rows in the second equation don't get ...
5
votes
1answer
448 views

Converting text math to TeX math (e.g. automatically filling in \left(, \right), \frac, etc)

At some point, it occurred to me that another level of abstraction may be possible on top of LaTeX. For example, why should I type \left( \frac{\frac{a}{b + c} \frac{w + \lambda}{z}}{x\left[ ...
12
votes
4answers
5k 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} ...
8
votes
5answers
7k views

How to properly subscript in a superscripted fraction?

the title says it all. It attached a MWE to display the different relative sizes of a subscript within a normal fraction and a superscripted fraction. As you can see, in the superscripted fraction the ...
10
votes
1answer
548 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} ...
8
votes
4answers
2k 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 ...
0
votes
1answer
2k views

Using \frac within tabular [duplicate]

Possible Duplicate: Using \frac within a table I'm trying to do that within CodeCogs renderer, but it don't work: \begin{tabular}{cc} \hline \frac{x}{2} & \frac{2}{x} \\ \hline ...
3
votes
2answers
1k views

How to change / to be horizontal?

I like to change a/b to be a - b how to do that?
10
votes
3answers
3k 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?
5
votes
2answers
389 views

Matrix doesn't shrink when put in fraction.

This is my minimal example, the problem is the different size of the two x. I would expect the matrix to be shrunken too, but it isn't. Why is this and how is it corrected? ...
1
vote
2answers
882 views

How can I embed \lvert and \rvert into the numerator ?

How can I embed \lvert and \rvert into the numerator? $1 - \frac{ \lvert 1 - t_2 \rvert}{y}$ The above line gives Undefined control sequence error.
2
votes
3answers
571 views

equality sign and fraction bar alignments in complex fractions around braces

When some math expressions such as complex fractions are around the braces which should be on the same baseline, besides, equality sign should be aligned with vinculum, how can we handle? For example, ...
4
votes
4answers
458 views

\frac{1-z^{n+1}}{1-z} doesn't look very good and how to leave space equal to the size of a given text

When we write it by hand we usually align the 1's in numerator and denominator. Should I change it manually, i.e. defining a command for typing the sum of the geometric progression or is there a ...
7
votes
2answers
1k views

Please critique this “intermediate size” fraction macro.

I often write a lot of mathematics where I multiply various quantities/operators/etc. by fractions. The fractions are important for bookkeeping, but usually not the most important thing in the ...
31
votes
1answer
18k 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 ...