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

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40
votes
3answers
9k 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?
9
votes
2answers
414 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 ...
9
votes
1answer
428 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} ...
6
votes
1answer
301 views

how to place text on fraction for accounting formulas?

Sorry for the bad grammar. English is not my native language. I want to have text on a fraction type line to show up in an accounting formula, here's an example of what I want: So, I've tried ...
36
votes
2answers
897 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 ...
30
votes
5answers
4k 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 ...
9
votes
4answers
614 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. ...
6
votes
1answer
284 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
2answers
186 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?
8
votes
2answers
188 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 ...
8
votes
1answer
3k 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} ...
6
votes
3answers
379 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 ...
5
votes
1answer
1k 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 ...
4
votes
4answers
425 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 ...
15
votes
3answers
798 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 ...
18
votes
5answers
589 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.
10
votes
1answer
2k 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 ...
8
votes
1answer
241 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} ...
14
votes
3answers
266 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 ...
3
votes
1answer
184 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 ...
8
votes
1answer
283 views

How to vertically center the fraction line?

I feel a bit weird because this is a really simple issue that apparently nobody has brought up so far but I find that very simple fractions produce output that looks vertically unbalanced. The ...
5
votes
1answer
690 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 ...
4
votes
1answer
842 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} ...
4
votes
1answer
8k 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: ...
3
votes
1answer
446 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!
7
votes
2answers
252 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 ...
7
votes
2answers
935 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 ...
6
votes
2answers
222 views

A special fraction macro with raised fraction bar

I need to create a macro which allows me to get a fraction with a raised fraction bar. In a first approach, I mean to create two boxes (numerator and denominator), separated by a fixed horizontal rule ...
3
votes
4answers
4k 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 ...
3
votes
1answer
311 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 ...
2
votes
0answers
130 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, ...
1
vote
0answers
38 views

Token not allowed in a PDF string: hyperref warning affecting the bookmarks in the PDF [duplicate]

I have written a text in documentclass book and I have quite a lot of maths into subsections titles. These titles are of course correctly rendered in the pdf page but are not in the bookmarks: for ...