# Tagged Questions

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

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### Accented operators using babel

I'm using the es-minimal option in babel which, among other things, disables accents on operators. Since I want accented operators I used the \accentedoperators command however the operators remain ...
32 views

### Spacing around equal sign with breqn

In the following minimal example, the spacing around the equal sign is wrong. How can I fix this? It is rendered as x =0 instead of x = 0. Changing to align* instead of dmath* works fine. \...
387 views

### Integral symbol in Lyx yields errors

I get errors when trying to use the integral math symbol in Lyx document using the report class. I am usig LyX Version 2.1.3. Code and errors below: #LyX 2.1 created this file. For more info see ...
190 views

### How to adjust self defined multiple product signs

The latex code below produces multiple product signs: \documentclass{article} \usepackage{amssymb,amsmath,graphicx,color} \newcommand{\invcircledast}{% \mathbin{\vphantom{\circledast}\text{% \...
114 views

### Lining numbers in mathnormal

Is there a simple way to have lining numbers (instead of old style ones) using \mathnormal{} ? I want $\mathnormal{abc123}$ to look like $abc123$. My problem is that I have an operator \Declaremathop[...
183 views

### Words under sum that's in a denominator

if I try this; Substituting the expression for $$\Psi$$ in to the above and rearranging we derive an expression for the vacuum field $$\Psi'$$ as a function of $$\mu$$, \Psi' = \...
189 views

### mathjax \sqrt command

I don't if this forum is the right place where post my question, anyway, it concerns TeX. Mathjax seems to create the bar over the argument of \sqrt command as a box with a sequence of very densely ...
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### Is there a command of the type “\blabla” where I can write \mbox{div}(F)

Maybe my question is easy. When I want to write $$\mbox{div}(F) = \sum_i (F_i)_{x_i}$$ I have to type \mbox{div}(F), which is cumbersome. Is there a way to define a command \blabla to produce \...
158 views

### \textsuperimposetilde does not superimpose as \sum subscript

Compiling the document, the tilde and P lie seperately under the \sum operator, but as the command superimpose would suggest, I would like them to be superimposed. Works just fine when using \...
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### Math Operators and beamer

I'm using xelatex and I'm having a very strange problem: while \documentclass{article} \usepackage{xparse} \usepackage{subfig} \usepackage{amsmath} \...
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### 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 $(0,-8)$. ...
10k views

### 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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### How to type specific things on the hat of expression?

I have problem typing this on the hat of max in the following example:
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### How to change the Math Delimiter font [duplicate]

I am using minion math font to change the operator as minion math. I successfully changed display math operator like \sum, \int etc., But I am unable to change the Minion Math font "Math Delimiter" ...
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### New DeclareMathOperator

In my MWE below, I wanted the create a shortcut for some operators. How can I get the \DeclareMathOperator command to show up like the conventional way of using the actual command $\mathbf{z}(k)$ ? ...
100 views

### Vector Arrow Weirdness

Here's something strange: \documentclass[letterpaper]{amsart} \usepackage{amsmath} \usepackage{amsfonts} \usepackage{gensymb} \DeclareMathOperator{\Vi}{\vec{i}} \begin{document} $\Vi$ $\vec{i}$ \end{...
2k views

### How to write a modified limit operator? [duplicate]

I am trying to write an generalised limit operator, which look approximately like the standard \lim, except it has an additional symbol in front, connected by a hyphen (see example below). I would ...
2k views

### 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 ...
39 views

### Notation for proper normal subgroup

Is there any easy way to put not-equal sign to any binary operation symbol like \triangleright etc. For example, I want to use it for a proper normal subgroup. If found one solution for \lhd but it ...
65 views

### how to print long relation operators like simeq and sim with text above in latex

ENV xelatex --version XeTeX 3.14159265-2.6-0.99991 (TeX Live 2014) bibtex --version BibTeX 0.99d (TeX Live 2014) \mathrel{\simeq\!\simeq} not what I want. \stackrel{\text{mytext}{\simeq}} the ...
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### Is there a way to use commands like \equiv without declaring a function?

I just want to add \equiv to my sentence but I keep getting an error when trying to compile in texmaker. Seems like what I need to do is wrap it in but I don't want to treat it as ...
190 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 ...
138 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 ...
908 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
219 views

### math cases package problem

I am preparing a presentation with beamer. I want to use a math formulas that contains a cases \begin{cases}{|x|=} x, & for $x \geq 0$\\ -x, & for $x < 0$ \end{cases} the problem in ...
450 views

### Formula in displaystyle but operator limit in normal subscript position [duplicate]

Possible Duplicate: Show inline math as if it were display math I have a formula in an equation environmente i.e., in a display style modality. Moreover, since I have to enumerate an operator,...
205 views

### Computing a simple maths calculation and use the result as page numbers in the Table of Contents

Following up this question here, I am looking for a way to compute a simple maths calculation inside the document and let the result of this calculation be the value that appears as page number in the ...
703 views

### Custom radical sign with plain XeTeX

I would like to use Cambria Math font in mathematical equation, and I have a simple problem here. plain TeX uses many symbols for the root sign, so it can use the proper one depending on context, ...
46 views

### pdfTex: \operatorname with Computer Modern Roman

I am using the default font, Computer Modern Roman, and I am trying to get \operatorname to work properly. The issue is that it appears to look identical to normal text. This question: LuaLaTeX: No ...
135 views

### Group binary operation symbol?

I tried to write • as the binary operation for a group (G, •), but \cdot seems too small and \bullet seems too large, so what symbol is normally used?
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### Using \mathtt{A} and the Package \usepackage{MnSymbol}

How can you use the symbol \mathtt{A} and the Package \usepackage{MnSymbol}? My code begin with \PassOptionsToPackage{dvipsnames}{xcolor} \documentclass[a4paper]{book} \usepackage{lmodern} \...
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### 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} \mode<...
267 views

### Proper way to typset minimum value of variable in formula?

To typeset a value with a subscript I use this: $U_{\text{res}}$ Which results in: Now I'd like to write "the minimum value of Ures", how would I correctly typeset that? The first thing I tried ...
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### Curl and divergence operators [duplicate]

I'm wondering if there's a TeX package where I could find a proper command to type curl and divergence in equations. Any help? Cheers, Riccardo