{equations} is about the various environments to typeset displaystyle mathematics, e.g. equation and {align}. For general questions about mathematical typesetting use {math-mode}. Both tags are possible on the same question.

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Align multiline equation with expression after equal sign

I am trying to align a multiline equation using array within the equation but it turns out it doesn't do very well. The code I am using is as follows: \begin{equation}\ \begin{array}{lcl} ...
11
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1answer
481 views

Text in an equation

This is best explained by example. Suppose I have the following: \[ \begin{align*} C_3 \rightarrow 6 automorphisms\\ C_4 \rightarrow 8 automorphisms\\ C_5 \rightarrow 10 automorphisms ...
11
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4answers
8k views

abovedisplayskip vs abovedisplayshortskip

What is the difference between these two? http://en.wikibooks.org/wiki/TeX/abovedisplayskip http://en.wikibooks.org/wiki/TeX/abovedisplayshortskip I don't know why, but it seems to work unusually. ...
11
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3answers
6k views

Modify \eqref command

I want to edit the \eqref command so that \eqref will produce Eq. (1), for example, instead of (1). Of course, I could define \newcommand{\reff}{Eq.~\eqref} but then I lose my editor's ability to ...
11
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3answers
4k views

Why doesn't lineno number a paragraph when it is followed by an indented equation?

While searching for the source of missing line numbers, I realized that paragraphs followed immediately by an equation have no line number, but this is fixed when a space is included, e.g. the ...
11
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4answers
20k views

Avoid large spaces between text and equations

I use the options \renewcommand{\baselinestretch}{1.25} \setlength{\parskip}{0pt} \setlength{\parindent}{0pt} in the preamble of my document and most of the time the document looks like intended. ...
11
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3answers
26k views

Using \gather and \align together

I'm very picky regarding alignment inside my proofs. What's frustrating me right now is that I have some lines that I want to be center-aligned (using \begin{gather}) and others that I wish to align ...
11
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4answers
897 views

Equation number for each row of a matrix equation

Is it possible to give an equation number to each row of a matrix equation? How could I have equation labels in the vein of subequation numbers, one for each row of the matrix equation? Here, I'd ...
11
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1answer
256 views

Strip section number from equation range reference

I am trying to adjust equation range numbering from (1.10)-(1.15) to (1.10-15). By calling this in the preamble: \crefrangelabelformat{equation}{(#3#1#4-#5#2#6)} and then this in the document: ...
11
votes
2answers
845 views

Which is the preferred command for equations in LaTeX?

While browsing some of the older questions I learned that I should not use $$. I also learned that I blamed LaTeX for obscure error messages that can be prevented by using \( and \). I started to ...
11
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1answer
3k views

Does amsmath provide any medium to auto-break equations?

I'm writing large equations in texlive with amsmath, and I want them to be automatically broken at the end of the line. Is there any way to do that with amsmath? What would you recommend me to do ...
11
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1answer
148 views

Aligning two fractions in the split environment

I have two equations: \begin{equation} \begin{split} d_1 & =\frac{aaaaaaaaaa}{b}\\ d_2 & =\frac{aaaaaa}{b} \end{split} \end{equation} I want the fraction lines to ...
11
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2answers
1k views

Custom alignment of columns in align environment

I need to typeset two columns of equations, each row typeset with an equation number to the right as with an ordinary equation. The first column must be centered, and the second column must be ...
11
votes
2answers
715 views

Label variables of equation using tikz without using itemize

I'm trying to use tikz to label the variables of an equation. I know of a similar question (Itemized Equation) but the answer uses itemize to label the variables. I would like to do something similar ...
11
votes
1answer
449 views

What would be the appropriate technique for typesetting a “where” list of variable specifications after an equation?

I'm often finding I need to lay out an equation in a manner resembling the following source: \begin{align*} x = y + z \end{align*} where $y = $ the value of $y$; $z = $ the value of $z$. ...
11
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1answer
6k views

Vertical spacing before and after equation environment: empty line or not?

The vertical spacing in front of and behind the amsmath equation environment is different whether I insert a blank line or not (im using KOMA-Script with parskip=half if this is important). I'd like ...
11
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1answer
3k views

Coloured equation number (without changing colour of reference using hyperref)

I am working on a file where I am using the package hyperref so that the references to equations are linked and coloured. Here is a MWE: \documentclass{article} \usepackage{amsmath} ...
11
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1answer
2k views

Referencing subequations with cleveref

I try to refer to the parent number of subequations with \cref from the cleveref package. However, I would like to change the output "eq. (...)" into "eqs. (...)" when I refer to parent numbers ...
11
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2answers
6k views

Horizontal Line Separating Steps in Aligned Equation

I have an equation that I'm trying to display with horizontal line separation. The result I'm looking for is similar to this question, but I'm not sure how to apply it to my equation (below). ...
11
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1answer
2k views

What is the advantage of using the equation environment in latex?

My flatmate uses \flalign for all of his equations in LaTeX and after thinking about it, it makes sense. Is the \equation environment not just more restrictive? Is there ever an advantage to using the ...
11
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2answers
1k views

Text mode commands/symbols in math mode

I am fairly new to LaTeX, and have run into a problem with commands apparently only available in text mode, where I would like to use them in math mode as well (e.g. integrated in equations). One of ...
11
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1answer
3k views

Describing steps in an equation

I am always describing the steps on how a formula is achieved or describing the underlying Mathematical principles taken to solve a problem in the align environment. But the descriptions are not ...
11
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1answer
7k views

Vertical alignment of dots in equation

Consider the following example: \documentclass{article} \usepackage{mathtools} \begin{document} \begin{alignat*}{6} 1 && 2 && ...
11
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1answer
271 views

Writing Notes, want my equations organized at the end of document

I'm writing up my textbook notes in LateX. As I am writing paragraphs, I am inserting equations while I'm writing. I want to somehow display all of my numbered equations at the end of my document ...
11
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2answers
212 views

How do I make “gather” object, place its self in the text, the same way as an equation object?

Assuming the amsmath package is installed. I found a difference between the way that an equation object and a gather object is embedded within the text. If an equation is beneath a line of text that ...
11
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1answer
19k views

Aligning the right parts in multiple \begin{cases}

Is there an intelligent way to left-align the parts right of & of the two cases environments shown below (if x >= 0, otherwise, if y < 0, otherwise). I wonder if there is a better way than ...
11
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2answers
483 views

Equation number enclosing parentheses misplaced with Polyglossia+Hebrew+amsmath

I am compiling the following MWE using XeLatex within TeXnicCenter and get a garbled equation number: \documentclass{article} \usepackage{amsmath} \usepackage{polyglossia} \setmainlanguage{hebrew} ...
11
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2answers
2k views

What's the difference between split and aligned?

I don't understand the difference between the split and aligned environments introduced by amsmath, so I'm posting this question as a place to collect what subtle details there may be. One thing ...
11
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1answer
233 views

Adding arrows with values over an expression

I'm trying to add arrows to math expressions (especially within limits) to note that there's a value assigned to certain term when solving a limit. I've come across the cancel package and its command ...
11
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1answer
162 views

Split up several equations into smaller ones?

I've tried to search for it, but I couldn't seem to find an answer to my question, so here goes. Let's say I'm writing a report of some sort. I'm up 50 pages or so, and at least 100 equations. Then, ...
10
votes
4answers
7k views

Coding an equation with description

I want to code this equation in LaTeX: I'd like to know how to code the equation and the description below it with a reference as well.
10
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3answers
346 views

“Escaping” Linux kernel version in latex

I'm trying to include a kernel version info (i.e. \texttt{2.6.40.4-5.fc15.x86_64}) in my LaTeX document. However, LaTeX keeps trying to put it into "math-text" ("Missing $ inserted" and so on). How ...
10
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4answers
20k views

side-by-side equations, with equation numbers for each

The align command from amsmath allows me to put two equations side-by-side: \begin{align} x = y && a = b \end{align} Unfortunately for my purposes, this shows both equations under one ...
10
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3answers
2k views

How can I number a few equations together

i would like to write few equations, but all the equations will get only once numbered and in the middle (right side) of the equations. e.q. if i write 3 equations, the number will be to the right of ...
10
votes
3answers
585 views

Boxed equation with number

My minimum working example: \documentclass{report} \usepackage{amsmath} \begin{document} \begin{center} \boxed{K_{k+1}=P_ka_{k+1}^T(a_{k+1}P_ka_{k+1}^T+I_N)^{-1}} \end{center} \end{document} ...
10
votes
2answers
4k views

Using the same number for repeated use of the same equation

I'm a LyX beginner so please don't worry about stating the obvious. I'm numbering equations by section in my document. That's working fine. However, when I refer to the same equation later on in the ...
10
votes
4answers
370 views

Splitting a formula

What is the best way to split an overlong formula such as the following one to multiple lines: \documentclass{scrartcl} \usepackage{amsmath} \begin{document} \begin{eqnarray} P2‘‘ &=& ...
10
votes
4answers
64k views

Bold text and newlines inside equations.

What I'm doing: \usepackage{amsmath} \usepackage{amsthm} \usepackage{eucal} \usepackage{amssymb} \usepackage{mathrsfs} % don't know what some of those do, but i think all the math related ones are % ...
10
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2answers
3k views

How to format Maxwell equations?

Is there a variant of split environment from amsmath package which would allow for two aligned equations in a row? I want to format two pairs of Maxwell equations in two rows and put single equation ...
10
votes
4answers
398 views

Depth and height confusion

I create two equations: $x \notin \mathbb{N}$; and $x \in \mathbb{N}$. As it turns out, both have the same depth value: Depth = 0.39098pt Height = 7.5pt Depth = 0.39098pt Height = 6.88889pt ...
10
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3answers
6k views

How to use the command \autoref to implement the same effect when use the command \eqref?

For example, the first equation of Section 1 in a tex file is numbered in the form (1.1), When we use the commands \autoref and \eqref for referring it, the compiled pdf file will show Equation 1.1 ...
10
votes
3answers
177 views

what is the correct way to typeset equations with a leading indicator/marker on each

I am using \begin{align*} to typeset set of equations. I want to say that the first one applies to case of dimension [T] (time), and the second for [L] (length) and the third for [M] (mass). I want ...
10
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3answers
388 views

Cases environment without the brace

I want to vertically align one equation against two, similar to the cases environment but without the brace: e.g. similar environment to: There must be another solution to the alignment solution ...
10
votes
4answers
6k views

How to export a equation as a image without background?

For example, if we have a equation on a file like: \documentclass[12pt]{standalone} \usepackage{varwidth} \usepackage[utf8x]{inputenc} \usepackage[T1]{fontenc} \usepackage{amsmath, amssymb, ...
10
votes
4answers
1k views

Highlighting equation with arrow

I want to create an equation with highlighting as shown bellow. But using following code: \documentclass[10pt,a4paper]{article} \usepackage[utf8]{inputenc} \usepackage{amsmath} ...
10
votes
2answers
3k views

Equations and Double Spacing

If a document (in any class) is double spaced, how do you redefine the spacing around centered equations as if there was single spacing? Whenever I use double spacing, I feel like the space before and ...
10
votes
3answers
314 views

Which math environment use to make a table layout?

I'd like to typeset math in table layout, which is stretched to page width e.g.: \begin{flalign*} a)\, \lim_{n\to\infty} \frac{1000n}{n^2+1} && b)\, \lim_{n\to\infty} \left( ...
10
votes
1answer
20k views

Left align (to the page) displayed math

How can I left align the display math environment (either $$ or \[)? I keep running into people asking about the align environment; but I just want to change displayed math from center to left align ...
10
votes
2answers
387 views

Tikz figure inside equation with braces that are too large

I'm currently trying to include a tree, visualized using Tikz-qtree and Tikz into an equation. The problem I'm having is that the curly braces are way too large. The code I'm using at the moment is: ...
10
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1answer
371 views

How can I add circles and arrows in linear equation systems?

How can I write a linear equation system that uses circles and arrows to indicate what should be added on each line. This is what I have so far: $S = \begin{cases} x_1+2x_2 - 2x_3 = 1 \\ ...