{amsmath} is a package provided by AMS that enhances LaTeX's mathematical typesetting capabilities in various ways.

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1answer
78 views

Does the align environment provided by amsmath not enter math mode?

I asked a question earlier today, where I learned that the subequations environment provided by amsmath does not enter math mode: Missing $ inserted error when using \frac inside subequations ...
5
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1answer
260 views

Missing $ inserted error when using \frac inside subequations environment?

Here's a MNWE (minimum not working example): \documentclass[12pt,letterpaper]{article} \usepackage{amsmath} \usepackage{amsthm} \usepackage{amsfonts} \usepackage{amssymb} \begin{document} ...
3
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5answers
104 views

Multi-line equation with split

I have the following problem: Obviously I want the = to be aligned and I need two lines for the equation following the third =. Also I'm not so sure whether I used the \big{[} and \big{]} commands ...
2
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3answers
248 views

How to define vectors when used in equation

So in short I want to have something that looks like this: So far I managed to get to the following output: with the code as follows: \documentclass[12pt, a4paper] {article} ...
2
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1answer
87 views

amsmath align* tampering with a counter of mine

\documentclass[a4paper]{report} \usepackage{amsmath,mathtools} \makeatletter \newcount\mw@shortcnt \mw@shortcnt=0 \newcommand{\short}[1]{% \global\advance\mw@shortcnt by +1% ...
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0answers
32 views

Correct typesetting of aligned (or multiline etc) equations after a pagebreak [duplicate]

I was writing a block of mathematical formulas using the align environment. While I was writing these aligned equations I reached a pagebreak and the whole block moved to the next page so it made me ...
0
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1answer
103 views

textit - undefined control sequence

I got a problem using \textit{}`. The error which occurs is "Undefined control sequence". It occurs in a formula. \texitit{P}_{int} = \int_{V^r} \textbf{\textit{P}}^{i+1} : ...
2
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3answers
253 views

Multi-Line Brackets

I can't seem to get the parenthesis to wrap around the RHS of the equality. I get the following error: Errors: ./review.tex:239: Extra }, or forgotten \right. [\end{split}] ./review.tex:239: Missing ...
4
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1answer
73 views

Amsmath double line equation alignment centered

I need an equation that consists of three parts (or one equation including 3 equations in total), it should look like this: My code for now gives me the following: So I would like to have the two ...
0
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1answer
63 views

Describing and referencing exercises in latex

I would be like reference the exercises have done such that it says Exercise 1 (Author [number], Chapter i, Exercise i.j ) \documentclass[a4paper, 11pt, notitlepage]{report} \usepackage{amsfonts} % ...
3
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1answer
46 views

Aligning Vertically Spaced Equations

This question is most likely a duplicate and trivial, but I ask nonetheless as it is causing frustration. I have written the following \begin{equation} \begin{split} \alpha_{a}\alpha_{b}+\alpha_{b} ...
2
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2answers
57 views

Is it possible to use \underbrace across align* environment?

I have two sets of equations in an align* environment and they are all just how I want them, but I want to draw an underbrace from the left bottom equation to the right bottom equation, but it throws ...
3
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1answer
4k views

What is the Latex convention for sign function?

What is the correct type for sign(x)(signum function)? I'm using: \documentclass[journal,transmag]{IEEEtran} \usepackage{amsmath} \usepackage{amssymb} \newcommand{\sign}{\text{sign}} Is that ...
2
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1answer
49 views

arrows with same length between spaces

I have a problem regarding code in latex. The problem is that the length of the arrows are different depending on the length of the labeling of the maps. e.g. the map {f_{x_0}} has an arrow which is ...
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0answers
53 views

Referring to a complete subequation environment. Is there a recommended style? [closed]

I have a subequations environment which is labelled and inside it I have an alignat environment which has a label for each line. Would you say it is ok to refer to the complete model as I do it in ...
7
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2answers
5k views

On \atop again: how to obtain the same result without warning

I know this question has been already discussed but the answer does not seem to work in my case. I am using the \atop command with the amsmath package to stack two symbols (more specifically $a=x$ ...
3
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1answer
139 views

What LaTeX math is not covered in the MathML specification?

Does anybody have an exhaustive list of what parts of the standard LaTeX math macros that are not covered by the MathML specification? By standard, ideally I mean the maths packages distributed with ...
5
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2answers
88 views

How to change the colour of a tag in align?

I'm having the following article: \documentclass{article} \usepackage{amsmath} \begin{document} \begin{align*} d(x, y) &= d(y, x) \tag{symmetry} \\ &\leq d(y, z) + d(z,x) ...
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2answers
271 views

How can I write a cursive letter k in math?

Using amsmath, writing $\ell$ produces a cursive lowercase letter l. I would like to have a reasonably matching cursive lowercase letter k, available through \kay e.g., so that I can write things ...
4
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2answers
323 views

How can I remove the qed symbols from all lemma proofs?

the following code will only make the qed not appear in the second proof. However, it it possible to make the qed symbol never appear at the end of the proofs without having to specify it locally ...
3
votes
3answers
589 views

Looking for stylized H-symbol

I'm wondering if LaTeX knows the following symbol (sorry for the hand-drawing, I didn't even find it online once): It's kind of a stylized H letter that is sometimes used to denote the Hilbert ...
1
vote
1answer
150 views

Tag placing with amsmath

I'm using amsmath and its \tag command to tag equations. I remember having a situation where I liked having the tag on the left better than on the right. So I gave my class (which is report btw) the ...
4
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1answer
338 views

Wrong (too much) vertical space above \vdots in small matrix

If one uses \vdots in a smallmatrix-environment the vertical spacing above the dots is too large. It is the same spacing as in a normally sized matrix-environment. Minimal working example: ...
3
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3answers
64 views

Center the second line of an equation

How do I get the following output? f a b c = <centered definition of f> g a b c d = <centered definition of g> These are definition of functions, but the bodies are big; I would ...
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2answers
157 views

Different horizontal (!) spacing of delimiters with `\left`, `\bigl`, `\Bigl`,

I use \arrowvert as a middle delimiter. For example in the definition of sets, i.e. \lbrace x \arrowvert x < a \rbrace. Moreover, I try to avoid \left, \right and \middle but use the AMSmath macros ...
0
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1answer
61 views

Getting items above and below a compound math symbol

I'm trying to get information to appear above and below a math symbol such as \sum or \leftrightarrows. I've found information detailing \mathop and the syntax behind it but when I try to use it, it ...
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1answer
87 views

ams math + AUCTeX + refTeX causing label references to always be \eqref not the desired \vref

As stated on the reftex documentation “Note that this is automatically done by the ‘amsmath.el’ style file of AUCTEX, see Section 7.8.2, page 38 – so if you use AUCTEX, this configuration will not be ...
1
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1answer
198 views

Incomplete \iffalse error in AMS alignment

MWE: \documentclass[a4paper]{report} \usepackage{amsmath,xparse} \makeatletter \newif\ifinvd@lims\invd@limsfalse \newif\iflr\lrfalse \ExplSyntaxOn \newcommand{\delim}[3][lr]{ \begingroup ...
4
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1answer
105 views

Font size inside subequations environment!

How I can change the font size inside the subequations environment? See below: \begin{equation} \textstyle \xi_{1} = A + B + C; \end{equation} The command \textstyle works fine inside the ...
5
votes
1answer
151 views

Incorrect reference when combining amsmath, hyperref, and \tag

In the following MWE, I receive a warning and a reference points to the wrong element. \documentclass{article} \usepackage{hyperref} \usepackage{amsmath} \begin{document} \begin{equation} ...
4
votes
3answers
136 views

Why does \label not work in math mode when using [fleqn] with amsmath?

Try the following \documentclass[11pt]{article} \usepackage[fleqn]{amsmath} \begin{document} \newcounter{eqnthing}\setcounter{eqnthing}{0} \[a+b=c\refstepcounter{eqnthing}\label{maththing}\] \par ...
2
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1answer
131 views

Two column equation block with vertical separator

I have seen various examples in text books and web pages (like here) of two column equation blocks, where the left column has some equation(s) and the right column has some explanation on variable ...
3
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2answers
187 views

How may I write 'and generally' and the second equation on one line?

Please note that the two equations ought to be aligned; the text and generally should be flush left, but the second equation should be centred. \documentclass{article} \usepackage{mathtools} ...
1
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1answer
80 views

Amsmath's \binom looking weird

Using the MWE \documentclass[fontsize=8pt, a4paper, DIV12]{scrbook} \usepackage{amsmath} \begin{document} \[ e^t = x^{(5)} - 2x^{(3)} + \dot{x} = \sum_{k = 0}^{5} \binom{5}{k} p^{(k)}(t) e^t ...
3
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1answer
82 views

Subequation labeling inside an “aligned” environment

I can align several equations inside a single brace with the following code. \begin{equation} \left\lbrace \begin{aligned} k \cdot E &= 0 \\ k \cdot B &= 0 ...
3
votes
1answer
86 views

creating conditional array using iopart

I need to write a conditional equation using iopart.cls, a class that doesn't work with amsmath. Usually I'd use the cases environment from amsmath like so: \begin{equation} \mathrm{sgn}(t) 1, ...
1
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0answers
16 views

Horizontally align \vdots with equal signs in aligned environment [duplicate]

I have a number of equations aligned at the equal sign. I insert a line containing just \vdots to indicate a bunch of steps and then equations again. How I can make the \vdots align with the equal ...
2
votes
2answers
2k views

Problem with cross referencing using gather environment

I am using gather environment to write bunch of equations. When I try to cross-reference those equations, the equation number doesn't show up. Here is my code \documentclass[12 pt]{article} ...
4
votes
2answers
54 views

Putting a tag in aligned enviroment

I want to set a counter in the following two lines (to the right) \[ \left\{ \begin{aligned} & u_t = H(x,t,Du)&\text{ in }& \mathbb{R}^n\times (0,T) \\\\ & u(x,0)=u_0(x) & \text{ ...
8
votes
2answers
2k views

In exponents, parenthesis too small, \big too big

When something big (a fraction, a sum, an integral...) appears within a pair of parenthesis, one can typically use \left(...\right) to get delimiters large enough to surround the contents. The ...
8
votes
1answer
187 views

Adaptively sized delimiters that don't go beyond the size of \bigl and \bigr

I would like adaptively sized delimiters, but only up to \bigl/\bigr-size. That is, there is variation only between ordinary/normal size and one size higher. \documentclass{article} ...
12
votes
2answers
327 views

Manually controlled size of delimiters in macros

I am using the amsmath package and I'd like to control the size of my delimiters manually, i.e. using the \bigl, \Bigl, ... , \Bigr, \bigr commands, instead of \left, \middle, \right. Now I want to ...
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votes
2answers
91 views

Confusing missing $ [closed]

Can anyone help with this. I'm not sure at all what I'm doing wrong but i get an error Missing $ inserted. $ on the 2nd line with c)\ The rest of the text works fine and there are ...
3
votes
2answers
120 views

how to give some text an equation number

I want to be able to write the following in LaTeX: We make the further assumption that \begin{equation} \label{eqn:assumption} There is a bounded linear operator $B:X\to X^*$ such that ...
2
votes
2answers
365 views

How to make a table more vertically compact?

I finally managed to use the cases construct within a table: \documentclass{article} \usepackage{amsmath} \begin{document} \begin{table} \begin{tabular}{l p{7cm} ll} \hline a & b & c \\ ...
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1answer
763 views

How to make nested fractions bigger? [duplicate]

I have a nested fraction on the right-hand side of an equation. I use the LaTeX code as follows to produce the equation: \begin{equation} \frac{1}{T_{ex}} = ...
37
votes
2answers
29k views

What is the difference between \dfrac and \frac?

The title says it all, both \dfrac{a}{b} and \frac{a}{b} make fractions, so what is the difference between the two?
0
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1answer
70 views

Cant get theorems in an appendix

I get the error \begin{document} ended by \end{theorem}. \end{theorem} and Environment theorem undefined. \begin{theorem} when trying to compile this latex document. Here is the problematic ...
3
votes
1answer
64 views

Formatting an equation environment to fit within the margins

\mathcal{P}^s_{\delta}(F) = sup \Bigg\{ \sum_{i}|B_i|^s : \{B_i\} \text{is a collection of disjoint balls of radii at most $\delta$ with centres in F} \Bigg\} This piece of text wont stay in the ...
5
votes
1answer
243 views

Show integration limits above & below the integral

Well considering this code, the "E" is shown after the integral: \begin{equation} m = \iiint_E \rho \ \mathrm{d}V \end{equation} The limit is shown slightly behind the number, how can I place it in ...