This post summarizes symbols used in complex number theory.
\documentclass[11pt]{article}
\usepackage{amsmath, amssymb}
\begin{document}
\begin{description}
\item[Set of complex numbers:]$\mathbb{C}$
\item[Notation 1:]$z=a+ib$
\item[Notation 2:]$i^2=-1$
\item[Real part denotation:]$\Re(z)$ and $\operatorname{Re}(z)$
\item[Imaginary part denotation:]$\Im(z)$ and $\operatorname{Im}(z)$
\end{description}
\end{document}
The set of complex numbers
\usepackage{amssymb}
$\mathbb{C}$
See here for a complete list of set symbols.
Complex number notation
$a+bi$ $i^2=-1$
Nothing unexpected here, the standard i or sometimes j is used.
Real part
\usepackage{amsmath}
$\Re(z)$ and $\operatorname{Re}(z)$
Imaginary part
\usepackage{amsmath}
$\Im(z)$ and $\operatorname{Im}(z)$
This comes from Mathematica (IIRC) and is not otherwise standardized, but there may be some disambiguation benefit in using the double-struck italic letters from Unicode’s Letterlike Symbols block: U+2148 ⅈ and U+2149 ⅉ.
At the very least, I’ve found it useful to use those characters in my source code (via \newunicodechar) in case house standards require upright roman, or bold, or whatever formatting.
Thanks for mentioning! Tom.
Hi
I want to put a curl over voltage symbol to signify that it is complex voltage . Do you know how to do it
Hello,
I’m not familiar with the notation, which is why I might have gotten the symbols wrong. You might still find the code below useful.
Cheers, Tom.
\documentclass[11pt]{article} \usepackage{amsmath} \usepackage{siunitx} \begin{document} Some text $\overset{\sim}{\text{\si\volt}}$ other text. Some text $\displaystyle_{\text{\si\volt}}^{\sim}$ other text. \end{document}Hello i would like to put stripe over x like in this link http://www.gymnazium.milevsko.cz/dokumenty/sfm/pol_3/prumer.png . do you think you could help me pls ?
Hi Frovis,
Here’s how to get ‘x-bar’ as shown in the picture:
$\bar{x}$ %or $\overline{x}$Best, Tom
I hoped that
\mathbb{i}would print the double-struck italic letters from Unicode’s Letterlike Symbols block: U+2148 ⅈ, but it prints a strange thing that is not even near my expectation… Could someone please fix this?The stix package has a double-struck italics i, although I’m not sure this is the font you were looking for.
\documentclass{article} \usepackage{stix} \begin{document} $\mathbbit{i}$ \end{document}