# Tagged Questions

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

1answer
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### 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 ...
2answers
164 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 ...
1answer
45 views

### amsmath matrix vs loading the array package

Here is an interesting interaction. Consider the example below. When ever the array package is loaded, extra space appears on the right in the output. Any ideas as to why? ...
1answer
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### 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 ...
3answers
91 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 ...
3answers
53 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 ...
1answer
39 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 ...
2answers
69 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 ...
1answer
28 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 ...
0answers
39 views

### Change the font used by \text

The \text macro can be used to embed text fragments in math formulas. However, if one uses separate math and text fonts (e.g. because the text font does not support math), \text of course uses the ...
1answer
84 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 ...
1answer
53 views

### Font size inside subequations environment!

How I can change the font size inside the subequations environment? See below: $$\textstyle \xi_{1} = A + B + C;$$ The command \textstyle works fine inside the ...
1answer
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### 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} ...
3answers
99 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 ...
1answer
35 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 ...
2answers
179 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} ...
1answer
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### 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 ...
1answer
32 views

### Subequation labeling inside an “aligned” environment

I can align several equations inside a single brace with the following code. \left\lbrace \begin{aligned} k \cdot E &= 0 \\ k \cdot B &= 0 ...
1answer
21 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: \mathrm{sgn}(t) 1, ...
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 ...
2answers
38 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{ ...
2answers
83 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 \label{eqn:assumption} There is a bounded linear operator $B:X\to X^*$ such that ...
2answers
80 views

0answers
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### Math symbols coming out blurry (bitmapped)

I am a LaTex beginner user and I am trying to compile a file for an IEEE publication and for some reason I get blurry (not vector format) math symbols, mostly brackets, \asterisks and integrals ...
2answers
51 views

### Getting Examples to look like Theorems/Lemmas/Corollaries

How do you get a latex document to present example in the same bold type face as you can for theorems/lemma/corollaries?
1answer
37 views

### How to obtain even space between variables in math mode?

When I combine numbers and several variables in an equation, the spacing between the numbers and variables are not even. What is the correct way to display the equation? The red box highlight the ...
2answers
59 views

### line break in math mode within longtable environment

I have a long mathematical expression within parenthesis which is larger than the column width that I have specified for my table. How do I force it to break the expression onto a new line? ...
2answers
52 views

### Aligning multiple column equation on left

I would like some equations aligned to the left, inline with text, with equation numbers aligned to the right, and with a middle column aligned with itself. The solution here and other solutions ...
1answer
45 views

### Align after \therefore

If I place my alignment ampersand after a therefore symbol (from amssymb), the proper spacing between the therefore and the rest of the equation is lost. Is there a way to prevent this from happening? ...
0answers
30 views

### Extra vertical space when using align and no numbering

I think I've found a small bug in the way the showonlyrefs=true option in mathtools works. Consider this semi-minimal example: \documentclass[12pt]{article} \usepackage[utf8]{inputenc} % UFT8 - ...
1answer
51 views

### Adjusting the size of round parenthesis in an equation

I am not sure what is the common rule in adjusting parenthesis in equations. Let me illustrate my question by the following example \documentclass{article} \usepackage[T1]{fontenc} ...
1answer
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### Clash between amsmath, atbegshi, and texpower packages?

Consider this document: \documentclass{article} \usepackage{amsmath} \usepackage{texpower} \usepackage{picture} \usepackage{atbegshi} \setbox0\hbox{\textbf{TEXT}} \AtBeginShipout{% ...
1answer
63 views

### mathrm doesn't change back pdflatex (pre-install of texmaker)

I'm having the problem, that commands like \mathrm, \mathbf, ... change the look of the entire line of the equation and not only the code that is wrapped by the braces. I'm using the IEEEAerospaceCLS ...
2answers
41 views

### How can I use \underrightarrow command with iopart.cls class?

I would like to use \underrightarrow command which is included in amsmath.sty package. But, the publisher forces to use iopart.cls class, which is incompatible with amsmath.sty. Any alternative ...