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

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How can I define (user defined) functions in math mode?

I am used to define some complicated and frequent mathematical expressions to be able to use them easily in my papers. For example I have defined \def\c{{\mathbb{C}}} for $\mathbb{C}$ (the field of ...
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249 views

My limits are moved [duplicate]

Possible Duplicate: Writing a limit so that the subscript goes directly underneath I am not sure how to explain this, but my code doesn't behave $\lim_{(x,y)\to(0,0)} xy + y$ ...
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133 views

Symbol for definition := [duplicate]

Sometimes the symbol := is used to denote a definition. For example, X:=Y+Z means that X is defined to be Y+Z. When using LaTeX, can I just use $:=$, or do I need to do something special?
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781 views

Combining \operatorname with \mathnormal and \mathrm

Related Question: Typesetting the square of a mathematical operator \operatorname converts its argument into a function symbol with appropriate spaces on the left and on the right. However, I ...
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30 views

Large Brackets Make Line Breaks too Small

\documentclass[10pt,letterpaper]{article} \usepackage[utf8]{inputenc} \usepackage{mathtools} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{parskip} ...
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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 ...
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133 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 ...
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176 views

Short line in math expression?

I have a mathematical terminology, and I can not do it correctly using LaTex. The origin form is in picture below: My version is: The main problem is the line between a number and the word ...
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466 views

How to show a wide bar over a letter?

I want to have a wide bar over XY but it just shows a small bar. Any idea? \item In the standard $(x,y)$ coordinate plane, point $X$ has coordinates $(-4,0)$ and point $Y$ has coordinates $(0,-8)$. ...
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46 views

How do I create a newcommand which outputs a letter with an index? [duplicate]

When I use \newcommand{\F1}{$\mathrm{F}_1$} I get the Missing \begin{document}. error and missing $ inserted if I move it inside the document. How do I define a macro so that \F1 would expand to ...
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155 views

summation line for multiple rows

Is there a way to add multiple lines of numbers using a "summation line"? Specifically, I want to create something like the below, only better looking. \documentclass{article} ...
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791 views

Changing all the integral symbols from the MnSymbol package, or how to get full math support with Garamond Premier Pro in XeLaTeX?

I'm editing a document in which I chose the Adobe Garamond Premier Pro font as the main font. The only free math font I found that fits with the AGPPro so far is the one from the MnSymbol package. ...
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LaTeX notation for summation over all combinations of two variables?

Is there a notation that expresses a summation over all order-independent combinations of two variables? I have a single set of objects and want to show the summation of the joint probabilities of ...
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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}}\} = ...
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33 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 ...
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Subscript of sum [duplicate]

How can I make a subscript for sum in latex like the following picture: I tried \sum_{q_i} but that doesn't make the result I want. It makes the following result:
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1answer
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Using < > symbols inside algorithmic [duplicate]

Possible Duplicate: Why do the less than symbol (<) and the greater than symbol (>) appear wrong as upside down exclamation or question mark? I have the following code ...
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1answer
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One more question regarding “function restriction”

This question is in connection with How to typeset function restrictions There, egreg gives a satisfactory answer (at least for me) The problem is that I'd like to do the same thing with ...
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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} ...
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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, ...
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1answer
88 views

About greater sign and sigma

What I want to write is if N+1 > N we do sigma (all the N) / the length of the array For the greater sign I use If N+1 \textgreater N But it's shown like this if N+1 >N No space ...
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137 views

Assigning different colors to numerical values below a certain parameter?

I'm relatively new to Latex so apologies for any stupidity upcoming. I'm trying to read a Matlab vector into a latex table with values ranging between 0 and 1. For the values less than 0.1, I want ...
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246 views

using unicode-math with math keyboard or hotkeys?

Here is more information about the unicode math-package: http://ctan.mackichan.com/macros/latex/contrib/unicode-math/unicode-math.pdf A great pro for using unicode math, is that your code is much ...
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861 views

Undefined control sequence math operators

I have an algorithm defined under figure container. For some reason I am getting a strange error in the conditional expression of the second If block statement. \begin{figure} \begin{flushleft} ...
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1answer
856 views

Is there a symbol for a circled intersection? Like \oplus for the plus sign [duplicate]

Possible Duplicate: How do I put a circle around an operator? Is there a symbol for a circled intersection sign? or an alternative way to render something like in the image below? Something ...
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1answer
116 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. ...
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How to denote number of summands below the expression? [duplicate]

If we want to write for example $\mathbb{N}=\mathbb{N}\times\dots \mathbb{N}$ and below the RHS write "n copies" how we will do it in Latex?
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\varamalg and \varcoprod operators for disjoint union

For the disjoint union, I don't like \amalg and \coprod very much. So, I did all my best to create a \varamalg with this code: \documentclass{article} \usepackage[utf8]{inputenc} ...
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\sum not properly displayed? [duplicate]

When I do $ \sum_{k=1}^{K} $ I get this: But I want to get this: where i is above! I am working in beamer.
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can't renew math command '\exp', why? [duplicate]

In the preamble of the main.tex file I've written \renewcommand{\exp}[1]{ \exp \left( {#1} \right) } so that the math function \exp automatically includes the round brackets. In the file I wrote ...
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184 views

How to implement a template for math journal? [closed]

I want to design a math journal. Please give me a structure for it. For any article there is an individual .tex file. (Excuse me for my bad English :) )
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Down right arrow similar to \to [duplicate]

I want an arrow of the same size and style as the \to arrow, but first going down and then right, similar to this: . Until now I just have managed to do: \rotatebox[origin=c]{180}{$\Lsh$} But it is ...
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\lesssim (and some others) not working [duplicate]

I'm writing a latex document and trying to use \lesssim (listed for example in here: http://en.wikipedia.org/wiki/Help:Displaying_a_formula#Relations ) in the text like this: $a \lesssim b$. However, ...
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How do I get a literal ~ in math mode? [duplicate]

Possible Duplicate: How does one insert a backslash or a tilde (~) into LaTeX? How can I write tilde ~ in math mode? When I write $~$, I get a space. When I write $\~$, I get an error. I ...
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330 views

Why do people write italic “d”s in integrals? [closed]

In some German books, I see what I consider proper: \int \mathrm d x In other books, I just see this: \int d x Since everybody writes $\sin(x)$ instead of just $sin(x)$, I wonder why people ...
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How to create this simple model with arrow and text on the top?

How to create this simple model with arrow and text on the top ? Regards
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Using Trigonometric Functions [closed]

When I type Trig functions using {} or () I seem to get the same result, what is the difference between the two?
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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 ...
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1answer
51 views

use a “+” or “-” by itself without terms

I want to typeset an I with a subscripted "+" sign. How can I do this? I know there's a trick to tell TeX that there are no operands, but I can't remember what it is, and I can't seem to search for it ...
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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 ...
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1answer
300 views

How to use \lll properly

I need the symbol <<< (left rotation). Now from TexStudio help, I found it as \lll. But when I use it, I get an error Undefined control sequence ... \lll. How to fix it?
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320 views

Double sided inequality [duplicate]

Is it possible to type an inequality operator like in the image above to be used in Stack Exchange Mathematics domain. It would be nice if I could add those H1 and H0 labels too.
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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 ...
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1answer
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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} ...
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1answer
104 views

Table for Binary Operations

I am trying to build a table used for different binary operations, especially with thicker lines on the sides separating the elements in the set from the "products" of the operations. I know this ...
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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 ...
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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 ...
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How to write a definite integral in latex?

And also how to edit the differential ? And how to put a summatory ?
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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 ...
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93 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? ...