{math-mode} is about typesetting mathematical content, e.g. tweaking the appearance of spacing and symbols in a formula, or producing specific mathematical constructs. For questions about "wrapper" environments like equation or align, consider the tag {equations}.
20
votes
4answers
1k views
How to automatically resize the vertical bar in a set comprehension?
I have a simple command which I use to write set comprehensions so that the braces automatically resize with respect to size of the enclosed arguments, e.g.
\usepackage{amsmath}
...
19
votes
4answers
1k views
Numbers outside Math environment
Should numbers inside the text be placed inside a math environment?
For example, if I am writing ...indent code by 4 spaces..., should I write it this way or ...indent code by $4$ spaces...?
...
16
votes
3answers
14k views
typesetting column vector
I would like to define a command which typesets a column vector.
For one vector I can have something like:
\left(
\begin{array}{c}
a\\
b\\
\end{array}
\right)
I would like the command to produce ...
12
votes
2answers
3k views
Bold italic vectors
I am trying to display vectors as bold and italic. The command \mathbf sets the letters non-italic. I also googled a bit and stumbled upon \mathbf{\em y} or \mathbfit{y}, which all didn't work.
I ...
5
votes
2answers
723 views
Broken matrix - gaps in brackets
This is my minimal working example.
\documentclass[12pt,a4paper]{mwrep}
%\usepackage{amsfonts}
\usepackage{amsmath}
%\renewcommand\baselinestretch{1.5}
\begin{document}
\chapter{Example}
...
15
votes
1answer
7k views
How to color math symbols?
One can use the command such as \textcolor[rgb]{1.00,0.00,0.00}{boundary} to color the word "boundary" in a document.
Here is my question:
How to color the math symbols in $$? For example, can one ...
13
votes
2answers
3k views
how to select math font in document
I want to show in one document different font examples of math fonts, for example Latin Modern, Times and Charter.
I know the command \usefont{T1}{lmr}{m}{n}, but have no idea how to combine that ...
8
votes
3answers
1k views
Arrow between parts of equation in LaTeX
I want to make an arrow under an equation pointing from one part of the equation to another. A bit like an underbrace, but with an arrow. How can I do this?
8
votes
4answers
1k views
What is the correct way to do delimiters?
I've always used \left and \right with my delimiters, but Martin Heller's answer to another question indicates that this method gives incorrect spacing. The correction appears to be prepending ...
18
votes
3answers
328 views
How to capture the current math style?
\mathchoice helps to distinguish between math styles:
\mathchoice
{<something in \displaystyle>}
{<something in \textstyle>}
{<something in \scriptstyle>}
{<something in ...
18
votes
5answers
8k views
typesetting of negative versus minus
I've occasionally seen a negative (when a number is simply negative, not a subtraction), typeset as negative sign that's slightly skinnier and above the centre line of text. Is this proper notation ...
13
votes
3answers
1k views
Can I insert an image into an equation?
I would like to use a small image in an equation, where a symbol like \alpha might otherwise be. Is there a nice way to do this?
12
votes
1answer
3k views
How To Change Math Font Only?
I'd like to keep my text in Helvetica as usual but would like to have my equations and formulas in Roman or MT Extra. So far, I've tried using different packages but that changes both the text and the ...
10
votes
5answers
658 views
A symbol for the field of formal Laurent series
In my area of math one of the objects that pops up quite often is the field of all formal Laurent series. Now the trouble is that the notation for this field is $\mathbf{C} (( t ))$. Now the two ...
7
votes
1answer
1k views
Punctuation in equations
My document will contain a lot of equations, and as usual in that case I would like to use "punctuation" in the equations, like commas, colons, periods/full stops, semicolons, etc.
Is there a special ...
5
votes
1answer
410 views
Using \leftroot{}, \uproot{} with closed square root symbol
As mentioned in this answer to Nice-looking p-th roots the amsmath package provides \leftroot{} and \uproot{} which allow you to move the position of the root to the left, and up in small increments. ...
14
votes
2answers
281 views
Why does \widehat behave differently if I insert \hspace{0pt}?
I am getting some inexplicable behaviour from \widehat:
\documentclass[12pt,a4paper]{article}
\usepackage{amsfonts}
\begin{document}
\[
\fbox{$\widehat{\mathcal{C}}$},
...
12
votes
4answers
1k views
Draw a line through one column of a matrix
I'd like to "cancel" (draw a line through) a column of a matrix (using \begin{pmatrix}..\end{pmatrix}). How can I do this?
12
votes
3answers
544 views
Replace the `$$ … $$` macro with the `\[ … \]` macros? - Prefer the way LaTeX lays it out, but `$` are faster to write
Is there a way to replace the $$ ... $$ macro with the \[ ... \] macros? (and replace inline mathmode as well)
I realised the only way I can write the \sum_{i=1}^{10} t_i is between the \[ ... \] ...
9
votes
1answer
9k views
Big integral sign
Is there a possibility to draw large integral signs?
I have found the package bigints but I have the feeling it is not very professional...
Any better idea?
7
votes
2answers
275 views
LaTeX color setting for math mode
I'm wondering if it's possible to do something like this in LaTeX:
For all numbers (0, 1, ..., 9) in math mode, color it red. For alphabets (a, b, ..., z, A, B, ..., Z) in math mode, color it green. ...
7
votes
3answers
501 views
The modulo two sum sign in LaTeX
I would like to know how I can obtain the 'modulo two sum' sign (unicode 2A0A i.e., the letter sigma with a circle in its middle).
I know I can obtain it by using the unicode-math package. But does ...
6
votes
1answer
715 views
Coloured math in beamer
I have a question: Is there any way to have math (everything between $s) in different colour than text (for example, green) in beamer?
4
votes
2answers
387 views
Really wide hat symbol
Is there any way to get a hat wider than widehat?
Why doesn't
\widehat{abcdefghijklmnopqrstuvwxyz}
really go over all of it?
4
votes
3answers
675 views
Using oldstyle figures of palatino (mathpazo) in math mode
I am using \usepackage[osf]{mathpazo} for oldstyle figures and the dcolumn package to align the contents of tables at their decimal point. The problem is that dcolumn automatically sets the aligned ...
22
votes
3answers
511 views
Why are so many symbols restricted to math mode?
A common beginner's mistake is to forget \(...\)/$...$ around symbols that require math mode.
Why doesn't (La)TeX let people use isolated symbols in text mode by default?
I am sure there are at ...
12
votes
3answers
800 views
mathop shifts the baseline, DeclareMathOperator doesn't
Here is a little example that illustrates this strange behaviour:
\documentclass{article}
\usepackage{amsmath}
\DeclareMathOperator\foo{\mathbf{l}}
\begin{document}
...
12
votes
3answers
2k views
\DeclareMathOperator won't take arguments
I'd like to define a family of math operators that have the same superscript, but different subscripts. My first attempt was:
\DeclareMathOperator{\Upd}[1]{U^M_{#1}}
But the log tells me that:
l.3 ...
12
votes
1answer
5k views
Difference between \textrm{} and \mathrm{}
Can you explain me what is the difference between \textrm{} and \mathrm{} when they are used in math mode. In what context one is preferred over the other?
11
votes
2answers
432 views
Equations, change the font size
How do I change the font size of something like this: I want to increase the font but it always seems to remain the same.
\documentclass[30pt]{article}
\DeclareMathSizes{20}{20}{20}{20}
...
11
votes
5answers
2k views
Define strange operators
I' looking for a symbol rendering the connected sum of $n$ topological spaces (or other quite strange topological operations) in a "product-like" manner... What For example in writing
$$
...
10
votes
2answers
235 views
Weird relative positioning of superscript and subscript with \dot, \bar
Minimal working example:
\documentclass[12pt]{article}
\usepackage{amsmath}
\begin{document}
\[ {A^\mu}_\nu \]
\[ {\bar{A}^\mu}_\nu \]
\end{document}
The result is.
Why is the placement of ...
7
votes
1answer
315 views
Can I redefine the dollar
I want to capture the math mode through a redefinition of the $. I thought about something like
\def$#1${here was a formula}
% to test
$x+y=z$
I would expect "here was a formula" as output. Is it ...
6
votes
1answer
907 views
Displaying an equation in a list
How could one get a displayed equation inside a list environment, say itemize, so that the equation is both centered horizontally and on the same line as the bullet, but with the bullet still on the ...
5
votes
2answers
532 views
Relation spacing error using =& in aligned equations
The middle equation in the following example seems to have wrong spacing around the = sign. The only difference is that I used =& for aligning around the = sign rather than &=.
This worries ...
4
votes
2answers
557 views
Problem with \mathpalette and \mathchoice
When working on an additional answer to this question of mine, I stumbled across the following problem with \mathpalette. For simplicity I give an example where in practice it is ridiculous to use ...
3
votes
2answers
641 views
Force aligned equation (all the way) to the left?
How do I force the following aligned output all the way to the upper left (right next to the enumerated list item)? I still want the 2nd and 3rd lines to be aligned with it's above equal sign.
...
3
votes
1answer
2k views
How do I make a blackboard 1? [duplicate]
Possible Duplicate:
Blackboard bold characters
I want to make a blackboard "1" character to show an indicator variable, but $\mathbb{1}$ doesn't work. How do I do it?
44
votes
9answers
3k views
LaTeX/Math jokes [closed]
Lighten up a bit guys. How about the following
\documentclass{article}
\usepackage{graphicx}
\begin{document}
If~~$\displaystyle\lim_{x\rightarrow8}\frac{1}{x{-}8}=\infty$
...
28
votes
1answer
3k views
Using \colon or : in formulas?
I noticed that in many documents you encounter $f: X \to Y$ instead of $f \colon X \to Y$. Another example are quantified expressions: $\forall x: P (x)$ versus $\forall x \colon P(x)$. I find the ...
24
votes
4answers
2k views
Should subscripts in math mode be upright?
In one-letter subscripts, like $x_i$, the subscript is usually typeset italic.
Is this the typographically right thing to do?
Consider this case:
The Boltzmann constant is often written as $k_B$, ...
22
votes
6answers
581 views
Is it possible to write all mathematical formulas in a separate file and add them in main file on-demand?
Consider this scenario:
I have a report to write and I want to write all mathematical formulas in a separate file and then add them in the main report file on demand (i.e. include/import/add/call a ...
26
votes
3answers
2k views
How to have overlapping under-braces and over-braces
I am trying to typeset an equation that has overlapping over and under braces as per the image below:
I have managed to typeset it using a sort of a hack, by typing the equation twice, once using ...
24
votes
4answers
1k views
When to use math mode?
In my document, the numbers inside math mode appear differently than those numbers out. Sometimes, I have numbers like "10 squared" within a paragraph, so it seems useful to use $10^2$. However, maybe ...
20
votes
1answer
345 views
How would one design a math font?
There are (some very nice) text fonts which do not have math support. Though there are ways to 'remedy' this, such as the mathastext package and some others, these are hardly satisfactory. All accents ...
10
votes
1answer
465 views
Which version of LaTeX permits more than 16 alphabets?
Sometimes I receive a message:
! LaTeX Error: Too many math alphabets used in version normal.
I know that there is a limit of 16 alphabets at most allowed to one article. However this message ...
19
votes
5answers
2k views
Is there a wider equal sign?
I have defined the equal by definition sign:
with this code: \newcommand{\eqdef}{\overset{def}{=}}.
However, "def" extends over the edges of the equal sign. Is there a wider equal sign to use?
12
votes
3answers
485 views
How can I illustrate decimal to binary conversion?
As part of my homework for discrete math I need to convert different decimal values, both positive and negative, to 8-bit binary representations using signed magnitude, 1's complement, and 2's ...
11
votes
4answers
3k views
Evaluation of Differentiation and Integration
I was having some thought about what would be the syntax to make the end point evaluation of derivatives or integrals. Such as making the | with the two end points of evaluation on the top an bottom ...
16
votes
2answers
2k views
Is there a difference between the `displaymath` and `equation*` environments?
The amsmath documentation says
Basic LaTeX doesn’t provide an equation* environment, but rather a functionally equivalent environment named displaymath.
Are they really the same or is there a ...
