# Questions tagged [math-operators]

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

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### Symbol “represented by” from quantum mechanics [duplicate]

The symbol I'm referring to is a standard equal sign with a dot right above it. I've looked around, but cannot seem to find the LaTeX code for the symbol used by Sakuri to represent operators in his ...
20 views

### XeLaTex: error on Z operator of an equation

I try to write the following equation using amsmath: So far I tried the following approaches: $H : G \rightarrow \Z_{q}^{*}$ $H : G \rightarrow \Zeta_{q}^{*}$ But both of them result to erroneous ...
71 views

### Resize several math operators to the same size

I need to use several math operations between the same kind of objects and would like them to be of matching sizes. E.g. I have two different operations: $\otimes$ and $\ast$. But the asterisk is much ...
216 views

### How do I fix the parentheses and division bar spacing in this quotient of partial derivatives?

With this code: $\frac{\left(\ffrac{\partial \left[\frac{P}{T}\right]}{\partialV}\right)_T }{\left(\ffrac{\partial V}{\partial T}\right)_V}$ And where: \newcommand{\ffrac}{\ensuremath{\frac{\...
107 views

### Define a new big operator in ConTeXt

I would like to replace the sum symbol by a big plus as Pedro G. Mattos wanted to do here How can I define a big plus operator that works like \bigcup?. In the wiki I found that the command I should ...
52 views

### How can i type a negative angle

How can I type a negative angle? Like this: I've been trying a lot of things around $U\angle\gamma$ but couldn't make it work.
44 views

### Error when defining a math operator and corresponding \renewcommand

I tried to define a new math operator - essentially a math macro. I wanted to define an operator for the Eccentricity of a graph or network. The code seems to work when I generate a PDF, however I am ...
115 views

245 views

### Inserting mathematical operator in Lyx

I would like to insert the less than or equal mathematical operator in the text of a Lyx document. Insert/Special Character/Symbols shows the symbol in the text, but compiling results in an error ("...
125 views

### Invalid Math Operator Declaration in LaTeX

I am trying to define two operators, FM0 and FM4, using the code below \DeclareMathOperator{\FM0}{FM0} \DeclareMathOperator{\FM4}{FM4} But when I use them as \FM0(x) = \frac{\PP(x)}{\sum_{i=1}^{N} ...
95 views

### how to represent Sum in latex [duplicate]

I want to represent the following sum in LaTeX. I have tried it in the following way: $$\sum_{{1 \le k \le n}_{ k odd}} k^2$$ But I have not got the desired result. Please help me.
848 views

### Libertinus Math: (too) small math symbols?

I am using LuaLaTeX and the unicode-math package with Libertinus Math as main font (it's a good match for Minion Pro). This is probably intended to be so, but I feel some symbols, e.g., the tensor ...
45 views

### How to invert a mathematical operator? [duplicate]

How can I invert a mathematical operator about an imaginary vertical axis that runs through the symbol's center? Specifically, consider the symbol \prec, which resembles the less-than symbol <. I'd ...