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

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3
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1answer
48 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
90 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
82 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
31 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 ...
6
votes
2answers
217 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 ...
4
votes
2answers
206 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
345 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
87 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
58 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 ...
1
vote
1answer
53 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, ...
2
votes
2answers
78 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
80 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
55 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 ...
4
votes
3answers
140 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
56 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} ...
5
votes
1answer
200 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
236 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 ...
1
vote
1answer
89 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. ...
3
votes
2answers
97 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 ...
8
votes
1answer
73 views

Automate correct spacing after ! in math mode

$(2n)!/\bigl(n!\,(n+1)!\bigr)$ $${52!\over13!\,13!\,26!} + 33!! - y$$ $(2n)!/\bigl(n!(n+1)!\bigr)$ $${52!\over13!13!26!} + 33!! - y$$\bye How could we automate the spacing after !? As explained in ...
3
votes
2answers
118 views

How to save space displaying “max x \in [a,b]”?

I just create a summary for usage in my exam and there are a lot of information worth to be on this summary page. k=1,...,n below max is a waste of space (I have more than 10 of these wasted lines ...
3
votes
1answer
47 views

operatorname and mathbin spacing

It seems like operators (e.g. \sin) don't mix nicely with binary operations (e.g. \circ). An example: \documentclass{article} \usepackage{amsmath} \begin{document} $\sin \circ f$ $\mathrm{sin} ...
4
votes
2answers
159 views

For Hom and H*(X,Z) — which fonts? [closed]

This is a question about style, I am debating whether the math operator \Hom should be just \DeclareMathOperator{\Hom}{Hom} or if it should be some variant like ...
7
votes
1answer
69 views

Operator with both arguments and limits

I'd like to define a command \E that can be used precisely as follows: it should translate \E{f(x)} \E_x{f(x)} into \mathbb{E}(f(x)) \mathbb{E}_x(f(x)) respectively. Specifically, the goal is to ...
7
votes
2answers
307 views

Large Blackboard bold R operator with text underneath

How do I typeset a large blackboard bold R (size of a \sum symbol) as an operator in an equation? See image. I can get the text to display underneath with \mathop{}, but I can't make the R big. ...
0
votes
0answers
22 views

How do I represent “U+2259 ≙ estimates” in math mode? [duplicate]

I need the math operator that resembles an equal sign with a hat (corresponds to / estimates). I've searched detexify and Wikibooks up and down to no avail. It's such a common symbol. There has to be ...
3
votes
2answers
116 views

How to Obtain a Bold Upright Integral Sign?

Having searched around I couldn't find a package that could produce the following integral sign. How do I produce this bold looking vertical symbol? Xe-/LuaTeX are totally fine with me. ...
1
vote
1answer
30 views

Limits position of new defined large operators

It is possible to introduce new large operators by using the command, \DeclareMathSymbol {⟨symbol⟩} {\mathop} {⟨sym-font⟩} {⟨slot⟩} I wonder if it is possible to change their default limits ...
3
votes
1answer
125 views

How to write the limits under all three summation : $\sum \sum \sum_{0 \leq i < j <k\leq n} 1$ [duplicate]

I want to write the limits under all three summation means starting from summation left side going towards right side ( dependent limits) , Please help on this. $$\sum \sum \sum_{0 \leq i < j ...
5
votes
2answers
158 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 ...
4
votes
3answers
494 views

Symbol for not conditionally independent

I have previously used some code from here to produce a symbol to represent the conditionally independence of some variables. Does anyone know a method for generating a symbol for not conditionally ...
2
votes
1answer
106 views

Standard AMS-Sum Operator using MnSymbols?

Because a professor who reads one of the lectures I attend this term writes so slowly, I typeset a lecture script for that lecture in TeX. For the use of some symbols and for better underbrace ...
5
votes
3answers
416 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
76 views

sqrt sign with sharp or rounded corner

My MWE \documentclass[a4paper,11pt]{article} \usepackage{letltxmacro} %MACRO \LetLtxMacro{\oldsqrt}{\sqrt} % makes all sqrts closed \renewcommand{\sqrt}[1][\ ]{% ...
4
votes
1answer
82 views

Add very nice lambda in empheq package or package-less

My MWE \documentclass[a4paper,11pt]{article} \usepackage[T1]{fontenc} \usepackage[utf8]{inputenc} \usepackage{lmodern} \usepackage{empheq} %\usepackage{mathptmx} \begin{document} ...
4
votes
1answer
151 views

mathematical operator disappear

I have a problem with mathematical operators such as "=", "+" etc. Whenever I type them within a mathematical environment (equation, eqnarray, in line equations via $...$, displayed equation via ...
5
votes
1answer
62 views

How to change math symbols of the stix package to CM ones?

Well, math operators like \int or \sum provided by the stix package are in my opinion ugly and I want those of CM instead. Is it possible? If so, how?
3
votes
3answers
355 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 ...
0
votes
2answers
77 views

Resizing the sum operator [duplicate]

The following simple expression produces a sum operator as in (1). But I want it to be bigger like in (2), of course, without altering the size of inner braces. Any suggestion? ...
7
votes
2answers
366 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 ...
2
votes
1answer
91 views

If f is the name of a math function, should it not be set upright? [closed]

I was happy to find out that my intuition about setting differential operators and common math constants was right (see the accepted answer). However, this got me thinking. My rationale for using ...
2
votes
1answer
292 views

Symbol similar to \equiv

What's the command for typing 3 lines exactly like \equiv but with index in the middle of top line? Thanks. EDIT: this is the symbol I meant
2
votes
1answer
117 views

The sign for “questioned equal to”

I want to write in TeX this sign: ≟ (Put in headings for bigger size). What's the syntax?
8
votes
3answers
293 views

atan2 does not work with pgfplots

Trying to plot the amplitude and argument of two sine waves in terms of their amplitudes and phases using pgfplots, An error appears while compiling the atan2 function (supported by pgfmath). Here is ...
5
votes
2answers
140 views

Math operator always in textstyle

I would like to define a macro that expands to the same symbol as \sum but using the inline style (\textstyle) even when used in a displayed environment. Here's what I got: ...
0
votes
0answers
70 views

convert latex formula to image using rtf2latex2e

i am having a tex file converted from rtf (OS: windows 8.1) using rtf2Latex2e . is ther e is any options to convert all formula,subscript ,superscript... to image because when i am trying to convert ...
3
votes
1answer
142 views

Redefine DeclareMathOperator [duplicate]

I'm looking for a way to replace \DeclareMathOperator{\Operator}{Operator} by something which would resemble \MathOperator{Operator}. I tried to define a new command ...
0
votes
0answers
35 views

How can I make the larger integration sign without using this $$…$$ [duplicate]

How can I make the larger integration sign without using this $$...$$ Since I have written that $(Uu)(x,y)=\dfrac{1}{\Gamma(r_1)\Gamma(r_2)} \int\limits_0^x \int\limits_0^y ...
4
votes
1answer
57 views

Float addition operator in LaTeX?

I need to get the +. sign (see the OCaml float addition operator) in LaTeX. However, when I try: *$\mid h :: t \-> h +. sumList(t)$ \\** The output is as follows: How can I make sure that ...
4
votes
2answers
281 views

Smashoperator for the vertical space?

I would like to vertically smash a summation sign in a way that the line has a vertical space as if the summation sign wouldn't be there. To illustrate it please see the MWE. The space between the ...