{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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12
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3answers
939 views

polytopes as inequalities sistem solutions in R3 (x-y-z) cartesian space

i'm here to ask if there's a TikZ/pgf support to draw areas resulting from a system of linear inequalities, into a xyz cartesian space. i found examples of my needs for xy plan at How to plot polygon ...
7
votes
2answers
467 views

How to show a placeholder instead of an equation?

I am looking for functionality similar to the endfloat package but for equations. Instead of displaying an equation I would like to display a placeholder such as [equation 1 here] Does anyone know ...
17
votes
2answers
733 views

How do I discard a portion of an equation number when cross-referencing?

I am writing a LaTeX document in which I number equations within sections. Thus, in my preamble I have \makeatletter \@addtoreset {equation}{section} ...
6
votes
1answer
209 views

The same height of text in a large document

I’m typesetting a large document that contains a lot of mathematics. The only problem is that the height of text on some pages that ends with a displayed formula is less than (about 3-6mm) the height ...
39
votes
3answers
3k views

Which command should I use for displayed equations?

A number of related questions have already been asked about this issue: align vs equation which is preferable to what to do with this hyperref note on amsmath and even eqnarray vs align But I'm ...
1
vote
1answer
406 views

Using \jot crashes \intertext’s spacing

As mentioned in Intertext vertical spacing, there seems to be some inconsistencies in spacing around AMS’ macro \intertext, even without changing the length of \jot. But if I’m using a longer \jot to ...
4
votes
1answer
991 views

I used eqnarray ignorantly and now must change all to align.. any solutions?

Other than manually going over all the dozen plus instances where I ignorantly used eqnarray must all be changed to align. I first tried doing a finad replace all and replaced align, and then, for ...
3
votes
1answer
119 views

alignment of symbols [duplicate]

I tried to align the equation and have some text on the equal sign. But it turns out that the equal sign that has text over it is no longer aligned to previous one anymore (I believe it is the text ...
2
votes
1answer
272 views

Vertically asymmetric matrices

I am noticing an odd problem with LaTeX that causes matrices and arrays that I compile to have a whitespace gap at the top of the array. When I use the same code as others online, I produce different ...
75
votes
4answers
148k views

How can I split an equation over two lines

I am having the following equation: \begin{equation} Q(\lambda,\hat{\lambda}) = -\frac{1}{2} P(O \mid \lambda ) \sum_s \sum_m \sum_t \gamma_m^{(s)} (t) \left( n \log(2 \pi ) + \log \left| C_m^{(s)} ...
3
votes
1answer
900 views

Best practice for annotation in lines of align for derivation?

When presenting a lengthy mathematical derivation that draws upon previously introduced theorems or equations, it is good practice to write down the derivation line for line (e.g. using the align ...
26
votes
3answers
45k views

Show equation number only once in align environment

I want the equation number to be shown only at the last line, or better, somewhere in the middle of all. So instead of (1), (2), ... only (1). I use \begin{align} ... \end{align}
3
votes
2answers
800 views

How to turn equation tags off by default?

I'm writing a document in which very few of the equations actually need tags. So instead of using starred environments, I would much prefer to exchange the meaning of the starred with the non-starred ...
4
votes
1answer
157 views

Code inside an equation environment is executed 4 times (or isn't it?).

I created a small example: \documentclass[a4paper,12pt]{article} \usepackage{amsmath} \usepackage[pdfstartview=FitH]{hyperref} \usepackage{bookmark} \begin{document} one line \newcounter{test} ...
3
votes
2answers
345 views

equation positioning problem

With this code: \documentclass{article} \begin{document} \rm \setlength{\parindent}{1cm} Estimatorul nonparametric pentru functia de distributie cumulative, $F(x)$, in punctul $x$ este raportul de ...
9
votes
1answer
3k views

Extra vertical space between aligned equations in ConTeXt?

In LaTeX, I can use \\[3mm] for example, to put extra vertical space, if I think it will improve the readability of displayed, aligned equations. And in fact I find I do this quite a bit. But what ...
1
vote
2answers
312 views

LaTeX equation positioning problem

With this portion of code \rm \setlength{\parindent}{1cm} Estimatorul nonparametric pentru functia de distributie cumulative, $F(x)$, in punctul $x$ este raportul de puncte intermediare care sunt mai ...
7
votes
3answers
1k views

Diagram displayed as an equation

Sorry to ask a direct question like that but: how can you do that ? Is it a complicated use of align ? Is it really and equation (mathmode) ?
2
votes
2answers
1k views

alignment of text between 2 lines in align*

I have this: \begin{align*} &f(1) = -11 & &\mbox{while q satisfies} &q(1) = 11,\\ &f(-2) = 20 & &\mbox{} &q(-1) = 20 \end{align*} which puts the text "while" ...
5
votes
2answers
951 views

How to make equations, figures and theorems use the same numbering scheme

It was asked a while ago how to make equation use the same counter as a theorem for example and one solution was to make the theorem counter use the equation instead by using ...
2
votes
1answer
866 views

Align number from enumerate with equation

I'm trying to have an equation as the first line of one of my items in an enumerate environment. Example: \begin{enumerate} \item \[ x \] \end{enumerate} I want the $x$ to have the same ...
3
votes
1answer
2k views

An environment to change the vertical space around a formula

Specially in beamer presentations, I use a custom environment to change the vertical space around a formula. The code is: \newenvironment{shrinkeq}[1] { \bgroup ...
1
vote
1answer
451 views

Alignat issue - extra space in one line

My code looks like this: \begin{alignat}{2} \theta^2&\equiv\frac{2m a^2\epsilon}{\hbar^2},\ \lambda&\equiv&\theta^{\frac{2p}{p+1}}\frac{E}{\epsilon},\\ ...
7
votes
1answer
5k views

aligning a multiline formula with the bullet of itemize

I would like to use a multiline equation into an itemized list, but such that the bullet of the list is aligned with the first line of my equation. The current code I use is like this: ...
11
votes
2answers
198 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 ...
3
votes
1answer
157 views

Fitting display math with luatex?

I took a latex file and edited it to be more readable on my phone. Specifically, I used the geometry package to typeset it on pages measuring 3x4. I set the text to be left justified to keep words ...
16
votes
2answers
778 views

Suppress equation number when not refered to [duplicate]

Is is possible to use only equation or align environments without the * and then automatically suppress the equation number if there is nothing refering to that equation? It would make the LaTeX-life ...
6
votes
1answer
350 views

Itemized Equation

I am new to latex, so please pardon me if this question seems trivial. I am writing a document and write equations in \begin{equation} ... \end{equation} since I would like the equations to be ...
5
votes
2answers
379 views

Is it possible to tweak the alignment of an equation when it is broken using breqn?

I have a looooooooong displaymath that I'm using breqn to break into smaller chunks. As there are no actual relation symbols, I've manually added \allowbreak everywhere I'd be happy for one to occur ...
7
votes
1answer
1k views

Centering xymatrix in equation environment

The xymatrix diagram does not seem to vertically align when grouped in an equation environment. For example, this code produces the following image (which seems to place the xymatrix 2.5em lower than ...
3
votes
2answers
351 views

Double braces in equation

I'm trying to create the attached image formulae. But I don't know how to get the double braces to work. This is my attempt with only single brace. x(t_n) = \left\{ \begin{array}{l l} 0 ...
18
votes
2answers
6k views

Alignment of equals sign in multiple align environments

I have multiple align environments in my document, separated by a small paragraph of text: \begin{align*} foo &= something very very long compared to the other align \end{align*} explanation ...
12
votes
1answer
7k views

Span formula over multiple pages.

I've looked through the search but I couldn't find what I specifically want. I have the following \begin{equation} \begin{split} Very long equation \end{split} \end{equation} Now, I have half a ...
6
votes
2answers
233 views

How to get the equation to look in a required format?

I am still new in LaTeX - beginner. How can I have the equation to look like this (the example is shown in ms word): Lexical level: f o x + plural (‘+’ is a morpheme boundary) Surface level: ...
4
votes
2answers
1k views

Complicated alignment within multiline equation

I'm having trouble getting the desired alignment behavior in a set of "sets" that I'm typesetting. I have a bunch of set definitions of the form $$U = \{\text{$x$ $|$ $x$ satisfies some ...
4
votes
1answer
875 views

Multiple equation numbers for a tikz picture

I am attempting to draw two related exact sequences in the same tikz picture, for alignment purposes. I currently have wrapped the tikzpicture environment in an equation environment, so that both ...
0
votes
1answer
679 views

Split equation problem

I would like to split the following equation in two parts. Very basic thing, seems to be. \begin{equation} \zeta_k(x) = \frac{\sin (\frac{1}{2} (x - x_0)) \cdots \sin(\frac{1}{2} (x-x_{k-1}))} { ...
16
votes
2answers
33k views

How to link an equation in LaTeX

I am wondering how I can link an equation in LaTeX, I mean when I click on the link then I'll be directed to that specific equation.
4
votes
1answer
2k views

Newline in equations

The code looks something like: $$ If \ abs(dx) = abs(dy) \ then \\ step = abs(dx)\\ else \\ step = abs(dy)\\ $$ I want the '\\' to ...
6
votes
1answer
12k views

How to shift one equation only towards the left margin

I have an equation extending into the right margin and off the page. I have many equations. For this equation only, I would like to shift it to the left. MWE below. \documentclass[twoside]{book} ...
9
votes
3answers
12k views

List of Equations / Table of Equations

After finding Table of Equations and http://www.latex-community.org/forum/viewtopic.php?f=5&t=428, I set about making a List of Equations for my document. The catch here is that we already have a ...
6
votes
3answers
8k views

Change border color of a \boxed equation?

I recently asked this question. The solution worked for me but I have a problem. cropped images are as small as possible. I would like to have a gif that bounds to borders of box of the equation. so I ...
8
votes
1answer
32k views

using subequations

I have an equation consisting of two parts and would like to use subequation for that. Here's the code: \usepackage{amsmath} \begin{subequations} \begin{equation} \operatorname{min}_{a,b,c} ...
2
votes
1answer
933 views

amsart and enumerate environment

I'm using the amsart documentclass. Now the equation numbers are aligned to the left, I'm okay with that but what bothers me is the following: If I have equations in an enumerate environment it ...
2
votes
1answer
481 views

Could I change the default column sep of `aligned` from \quad to \qquad globally?

I need your help: to change the default column sep of aligned from \quad to \qquad globally, thanks.
12
votes
1answer
448 views

How can I extract equations from one document for use in another?

I have a LaTeX document that includes many equations. I would like to create a separate "quick reference" sheet that includes many of these equations. Instead of copy-and-pasting the equations from ...
5
votes
3answers
457 views

How can I align numbers in equations?

What is the best way to produce the following: (Image shows a typo)
2
votes
1answer
2k views

Multi-line equations with explanations on some lines

I would like something like this: STH = STH REASONS Explained. = STH LOOOOOOOOOOOOOOOOOOONG REASON = STH. How can I do this?
3
votes
4answers
1k views

codecogs like software/ IDE/ LaTeX environment ?

I have been using the website, codecogs for mathematical equations - and it is wonderful for a noob like me. However, I wish to avail of such support when I am offline, is there similar facility for ...
4
votes
4answers
1k views

How Can I Avoid Writing “\noindent” After Equations [duplicate]

Possible Duplicate: How can I get rid of indentation after an equation? Just a quick question: For clarity, in my LaTeX files I always leave a blank line after equations: $$ equation $$ ...