{math-operators} is about operators in math mode. These include sums, integrals and similar, text operators like sin, cos, etc.

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5
votes
3answers
379 views

How do you create a set in LateX?

I am very lost. I haven't been liking LaTeX as it's quite hard for me to get the hang of it, so I've decided to practice on my own during the summer, but I am already stuck on something that seems ...
3
votes
1answer
58 views

operatorname does not work for Greek capitals in Beamer with T1 font encoding

I cannot define operatorname for \Delta when line \usepackage[T1]{fontenc} is added into preamble. For \delta or without T1 things seem to work properly. But for the following example I get ‘´ d’ ...
0
votes
0answers
22 views

Is there a built-in command like `\sin` except for curl? [duplicate]

I know that we can write \sin x to get a non-italic sin. I would have expected there to be a similar command for curl, so I could write \curl \mathbf{F}. Is there such a command, or should I define my ...
3
votes
1answer
28 views

\DeclareSymbolFont undesired effect

I would like to have math operator names in Sans Serif. \DeclareSymbolFont{operators}{OT1}{cmss}{m}{n} does the job but has also an effect on Greek capitals. How do I change font for operator names ...
7
votes
1answer
77 views

How do I make a $\sigma$ the same size as an uppercase $\sum$ with a symbol or letter in the center of the hole of the $\sigma$?

I am a bit to new to figure out how to simultaneously make something that looks like this: \sum_a^b but instead is a lowercase \sigma that has been enlarged so that I can write a little letter ...
0
votes
0answers
67 views

How to write a definite integral in latex?

And also how to edit the differential ? And how to put a summatory ?
0
votes
1answer
37 views

Conditional branch with \ifinner and Spacing in higher derivative (2 independent questions) [duplicate]

I made some macros shown below, which outputs ordinary/partial derivative. I was checking whether they work as I expected, and found that \dif{y}{x} expands to \tfrac{\difd y}{\difd x} in align ...
2
votes
1answer
30 views

Wick contraction on boldface symbols

How can I Wick contract boldface letters? I am currently using the wick.sty package but it does not allow either {\bf X} nor {\bf X} to be Wick contracted against anything else. Is there some way ...
0
votes
2answers
34 views

Eulerian polynomials of the second kind with \genfrac?

The Eulerian polynomials of the second kind are defined as (see for example here) E_n(x) = \sum_{m\ge0} \left\langle\!\!\left\langle n\atop m\right\rangle\!\!\right\rangle x^m . I would like to ...
10
votes
2answers
7k views

How do I write $\sim$ approximately with the correct spacing?

I would like to use the symbol $\sim$ as "approximately". e.g: \documentclass{minimal} \begin{document} There are $\sim 10^{80}$ atoms in the universe. \end{document} I think that I need to declare ...
12
votes
2answers
1k views

How can I use \lVert and \rVert norm symbols (‖x‖) with the Iwona math font?

I want to use \lVert and \rVert to denote the vector norm. With Computer Modern this works quite fine. But when trying to use Iwona as a math font, I run into trouble: \documentclass{standalone} ...
4
votes
1answer
121 views

Standard for typesetting mathematical objects other than variables

Is there a standard in mathematics for typesetting the textual (not symbolic) identifiers of mathematical objects other than variables? Textual identifiers of mathematical objects other than ...
3
votes
1answer
39 views

How to define d in integral expression for \int \dif x f(x) notation

There seems to be some consensus about defining \dif like this: \newcommand{\dif}{\mathop{}\!\mathrm{d}} Should I \mathrm the d in my integrals?, What is the difference of \mathop, \operatorname ...
1
vote
1answer
34 views

Changing the operator font with unicode-math loaded

How could I change the operator font to, let's say, the sans serif style, with the unicode-math package loaded? The following code only works without that package: \documentclass{article} ...
0
votes
1answer
43 views

How to type this math symbol? [duplicate]

I've got to type this symbol in my article. I've searched through Internet but haven't seen anything about how to write it in TeX command. It is perhaps rarely seen or used. But I really need to use ...
1
vote
2answers
40 views

How do I write a multi row single column (or multiple columns) equation?

\documentclass[a4paper,12pt,numbers=noenddot]{scrartcl} \usepackage{mathtools} \usepackage{bm} \begin{document} \begin{equation} \nabla_Q N_I = \{{N_{I,1}} \\ {N_{I,2}} \\ {N_{I,3}}\} = ...
0
votes
1answer
31 views

How to indent the equation number to the right?

\documentclass[a4paper,12pt,numbers=noenddot]{scrartcl} \usepackage{mathtools} \usepackage{amsmath} \begin{document} \begin{equation} \delta{\mathbf{E_e} = \sum \limits_{I=1}^{M} \emph{B}_{LI} ...
1
vote
2answers
140 views

How do I place the argument of “min” below rather than to the side?

\documentclass[a4paper,12pt,numbers=noenddot]{scrartcl} \usepackage{mathtools} \usepackage{amsmath} \usepackage{amssymb} \usepackage{bm} \begin{document} \begin{equation} ||\mathbf{x}^{1} - ...
14
votes
5answers
3k views

How to create my own math operator with limits?

How can i write my own math operator with limits? I want it to look like: \sum\limits_{e=1}^{m} but with a capital A (if possible bigger than the normal text) instead of the sum. Thanks for the ...
2
votes
1answer
116 views

How to fix \min in beamer?

If I use \min in a regular document, it shows correctly: However, if I use the same command in a beamer presentation I get: Here's my header: \documentclass[mathserif]{beamer} ...
9
votes
2answers
440 views

How to add mathematical notation of a set

I'm pretty new to Latex, so please bare with me. I'm trying to add this notation to my document: I created the above picture from the Online Latex Equation Editor, but it seems that when I try ...
5
votes
1answer
62 views

Compilation error with \ifnum in ConTeXt

Why the following code gives me the following error? Code: \begingroup \catcode`\"=12 \gdef\newmcodes@{\mathcode`\'39\mathcode`\*42\mathcode`\."613A% \ifnum\mathcode`\-=45 \else ...
2
votes
1answer
46 views

How do I reduce the space between operators in math mode? [duplicate]

I have these operators +=, -= etc. in Math mode. LaTeX introduces space around single character operators. So I get + = and - = instead. However, in my case I want no space between the + and the =, ...
1
vote
1answer
30 views

Large Brackets Make Line Breaks too Small

\documentclass[10pt,letterpaper]{article} \usepackage[utf8]{inputenc} \usepackage{mathtools} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{parskip} ...
1
vote
2answers
101 views

Writing limits of integration [duplicate]

I'm not sure exactly what it's called, but I would like to draw the line after an integral has been "solved," showing limits of integration, like so: There is a line with a 9 above and 1 below.
6
votes
3answers
52 views

Bigcup, bigwedge etc. inside brackets gets space above

I want to have the following formula: \[\Phi=\{\phi\}\cup\left\{\exists \mathsf{x_0}\ldots\exists \mathsf{x_{n-1}}\left[\bigwedge_{0\leq i<j\leq n-1} \mathsf{x_i}\neq\mathsf{x_j}\right]\right\}\] ...
4
votes
1answer
140 views

How to correctly write +: R × R → R?

When viewing addition on (say) a ring R as a map R × R → R, one often writes something like {+}\colon R\times R\to R. However, I assume that perhaps \mathord+\colon R\times R\to R is more ...
7
votes
4answers
117 views

Aligned underbraces between amsmath equations

I have an \amsmath aligned environment containing some equations aligned with &=. I want to be able to place underbraces between the equations in such a way that that both the contents and “point” ...
3
votes
1answer
107 views

Trigonometric function script? [duplicate]

Is there a script for the sinc function analogous to \sin for sinus? If not, what method should I use to insert it in a equation?
1
vote
2answers
47 views

Equation and math system on same line

To add a math system into a LaTeX document, I add to preambol \newenvironment{sistema}% {\left\lbrace\begin{array}{@{}l@{}}}% {\end{array}\right.} then in the document I do something like ...
52
votes
3answers
17k views

newcommand vs. DeclareMathOperator

As far as I understand, whatever can be done using DeclareMathOperator can also be achieved using newcommand, but not the other way around. If this is the case, what are the circumstances where ...
6
votes
2answers
260 views

Nested Summation

Using below code i am getting result shown in below image but its not properly displayed for ex space on either side of =. First summation sign is small. Brackets ( ) are small. All items are not ...
5
votes
2answers
168 views

Spacing around math operator in sub-/superscript

Consider the following: \documentclass{article} \begin{document} What I have: \[x^{1+1}\] What I would like: \[x^{1\,+\,1}\] That is, I will like to have spacing around the operator as in ...
5
votes
3answers
636 views

How do I write logical iff symbol?

I'm currently hearing a lecture about formal systems (a computer science lecture). The lecturer makes a symbol that is written like overlying < and >: Every time when he draws it, he says ...
4
votes
2answers
221 views

Symbol inbetween “#” and “ff”

I wondered how to create a symbol that looks like "#" (for connected sum) and "ff" for "fiber". The size and angles should be like the "#", but the vertical bars should look like two f`s. Another way ...
12
votes
4answers
456 views

\wedge and \vee juxtaposed in one symbol

How can I combine the symbols \wedge and \vee into one symbol, like \wedge\vee and \vee\wedge? I am thinking of something like \gtrless but rotated by 90 degrees. The purpose is similar to the \pm ...
5
votes
2answers
117 views

\scriptstyle placement fine tuning

I need a functional composition operator. I find \circ too big for it, so I've declared a math operator (within the amsart documentclass) as \scriptstyle\circ instead; the size is exactly what I would ...
0
votes
1answer
61 views

Hyperbolic functions both produce error and result already existant when inserted in preamble

I'm trying to write hyperbolic functions like sech, csch, etc, Since amsmath doesn't recognize them in the form \sech, \csch, ... I wrote a preamble like \DeclareMathOperator{\sech}{sech} but I get ...
2
votes
2answers
83 views

cup with a dot in it - but in mathjax! [closed]

Looking for solutions I have found that there are 3 ways, all can be found here Is a cupdot symbol available in amsmath? It seems that those answers are just copied and pasted all over the internet ...
1
vote
1answer
143 views

Undefined control sequence for beta symbol list

I am new to Latex, please help me! I would like to give a beta symbol with a sequence of values as below. \boldsymbol{\beta} = (\beta_1,\beta_2,\dotsc,\beta_n) output looks promising. β = (β1, ...
1
vote
1answer
135 views

A hack for getting a *capital* Weierstrass P in order to represent the Power Set operation [closed]

I've been reading around stack exchange trying to find out how to get the symbol I wanted for the power set operation in set theory. In my opinion, the best and most standard symbol for this is the ...
4
votes
4answers
75 views

Write text (or symbol) vertically below another symbol in latex

I have to write some equations in latex, my Latex equation: \begin{align} G _{a_{1},\ldots ,a_{k}}\ast_{b_{1},\ldots ,b_{k}} G^{\prime }=G^{\prime \prime } \end{align} How can I make the text ...
1
vote
1answer
119 views

Derivatives are sized differently with commath [duplicate]

I'm writing a derivation in an upper level physics class and I use derivatives extensively. I'm using the commath package \od{}{} command and they are being sized differently in different places. ...
6
votes
3answers
18k views

latex symbol for “if and only if” [duplicate]

In LaTeX the symbol for material implication is produced by $\to$, but for biconditional ?
4
votes
3answers
144 views

How do I modify the size of S the summation operand?

I bet this fancy summation operand S is in fact $\mathcal{S}$, am I right? But how do I modify the size of this thingy? \bigg or \left\right doesn't seem to work... And something like this: ...
4
votes
1answer
63 views

framed package change math?

This code : \documentclass{article} %\usepackage{framed} \begin{document} bla bla bla $\cap_{i\in I} X_i.$ \end{document} produces : and the same code with the line \usepackage{framed} ...
4
votes
2answers
6k views

Package or command for inverse hyperbolic trig functions?

What are the commands for all the: inverse trig functions (arcsec(x), arcCsc(x), arcCot(x)); hyperbolic trig functions (sech(x) and csch(x)), and inverse hyperbolic trig functions?
5
votes
1answer
326 views

Expectation Operator

I use the following command to typeset E[A|B] \documentclass{article} \usepackage{mathtools} \DeclareMathOperator{\ExpOp}{E} \DeclarePairedDelimiterX{\ExpArg}[1]{[}{]}{#1} ...
6
votes
2answers
253 views

How to create a bracket-ing √-Operator?

In formulas involving square roots, I consider the overline rather irritating and would like to create an operator that turns \sqrt{x} into √[x], i.e. the argument is bracket-delimited instead of the ...
3
votes
2answers
110 views

How can I recreate MnSymbol's \udotdot command without using MnSymbol?

MnSymbol has a \udotdot command (search for \udotdot in the comprehensive latex symbol list document), but I don't want to import MnSymbol because of all the side-effects (for instance, it creates ...