{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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LaTeX in CorelDRAW

What is a good way to get LaTeX formulas into CorelDRAW figures? I will provide a solution below, based on a rather old macro adapted to work on 64 bit systems as well as 32 bit - it works well, but ...
12
votes
1answer
20k 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 ...
12
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2answers
519 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} \...
12
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1answer
202 views

First reference to equation underlined

In these days I'm writing at my Bachelor's Thesis and I've got a new problem. I have to underline the first reference to figures, tables and equations. By searching in the Internet I've already found ...
11
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4answers
8k 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.
11
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5answers
8k views

How to align the equal signs in this equation such that the first line and last 2 lines align

so I have an equation below. My latex code for it is: \begin{align*} CoJPoD_{ \{I_1, \cdots, I_{k-1}, I_{k+1}, \cdots, I_{n}\} | I_{k} } = CoJPoD_{ \{system \backslash I_{k}\} | I_k} \\ = P\...
11
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3answers
404 views

Alignment in math equations

How can I align my equations as in the image below? I know \begin{equation} \begin{split} x_1'(t) &= x_1(t)+2 x_2(t) \\ x_2'(t) &= 3 x_1(t) \end{split} \end{...
11
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4answers
339 views

Curve Integral typeset problem

I would like typeset equation on the figure below: I've tried code: \begin{equation}\label{fyz:eq_fey_curveint1} \Psi(2)-\Psi(1) = \begin{array}{l} \displaystyle\int_{(1)}^{(2)}(\nabla\...
11
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3answers
3k 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 ...
11
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4answers
3k views

Writing an equation with the units positioned off right

Okay so I have a have a lot of equations in the document I am writing and I am trying to display the units of an equation off to the right. I was wondering how I can achieve this? Right now, all I ...
11
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3answers
1k views

Too long equation without splitting

I am writing an equaition which is too long-wide. I don't want it to split. I tried to change the fontsize within the equation enviroment but it didn't work. I am using \documentclass[11pt]{article} \...
11
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4answers
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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 % ...
11
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3answers
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Writing equation in LaTeX: some part are mysterious to me :)

I would like to write in LaTeX two equations: and I do not know how to do that...Particularly, how to write stuff underneath the max function. And also how to have this line over Wi or Wj. PS: ...
11
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4answers
12k views

How to show two groups of equations side by side: one implies the other?

I would like to show a bunch of equations can imply another bunch of equations, with double right arrow in between. Here are two trials of mine: one is to use another level of math mode to enclose the ...
11
votes
1answer
500 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
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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, ...
11
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3answers
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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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4answers
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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
votes
3answers
28k 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
1k 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
votes
1answer
273 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
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2answers
875 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
149 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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1answer
16k views

Formatting multiple equations in one displaymath line?

If I want to write multiple equations in the same line in displaymath mode, I would do something like this: \[ a + b = c \qquad\text{and}\qquad a^2 + b^2 = c^2 \] But I know it's not good to rely ...
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 left-...
11
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2answers
765 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
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1answer
4k views

Long equation does not page break

I have a series of equations steps, about 20 lines or so. I would like to have it automatically decide page break when necessary, but it resists and always tries to stay in a whole page, rendering the ...
11
votes
1answer
7k 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
votes
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} \usepackage{...
11
votes
1answer
3k 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
7k 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). \begin{...
11
votes
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
votes
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
votes
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
votes
1answer
9k views

Vertical alignment of dots in equation

Consider the following example: \documentclass{article} \usepackage{mathtools} \begin{document} \begin{alignat*}{6} 1 && 2 && ...
11
votes
1answer
277 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
votes
2answers
1k views

Cleveref: Parentheses around references to subequations using \labelcref

Using the Cleveref package (v0.19) i have a problem with missing parentheses when referencing to subequations, using the \labelcref command. Here is a MWE: \documentclass{article} \usepackage{parskip}...
11
votes
1answer
236 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
votes
1answer
163 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
3answers
348 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
votes
4answers
22k 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
votes
3answers
678 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
5k 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
374 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
2answers
33k views

How to write partial differential equation (Ex. dQ/dt=ds/dt) with real partial derivative signs?

I would like to make a partial differential equation by using the following notation: dQ/dt (without / but with a real numerator and denomenator). Earlier today I got help from this page on how to ...
10
votes
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
3answers
5k views

How to put your symbol explanation for the formula?

I have a formula written in LaTeX. What is the best way to explain what the symbols mean in the formula? For example I have this equation with a where: symbol definitions \begin{equation} \sum_{i=0}^...
10
votes
4answers
420 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
votes
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 ...