dotequal
I need this symbol. I've searched for it but can't find its unicode. All I can find is ≐ ,≑ and ≖, but what I need is a dot inside the equal, not above or around or a ring inside.
Here is its latex.
\documentclass{article}
\usepackage{MnSymbol}
\usepackage{amsmath}
\DeclareMathOperator{\equaldot}{\mathrel{=\hskip-0.64em\cdot\hskip0.15em}}
\begin{document}
\[
a \equaldot b
\]
\end{document}
from
In latex, how to type a math symbol that is an equal sign with a dot in the middle?
If there isn't such a Unicdoe, is there a way to combine two symbols = and · together?
That's to say, is there a way to make two Unicode stack together?
You can define that symbol on your own. Here's a possible solution:
\newcommand*{\defeq}{\def\arraystretch{0}\begin{array}{c}
\overline{\underline{\,.\,}}
\end{array}}
Related
I can use \DeclareUnicodeCharacter{0278}{\phi} and then $ɸ$ to display the ɸ symbol in LaTeX. However, when I try to use:
\usepackage[utf8]{inputenc}
\DeclareUnicodeCharacter{0360}{\eth}
\begin{document}
$ð$
\end{document}
ð doesn't display. Why doesn't this work?
You need
a package which provides the \eth macro in the encoding you are using, e.g. stix
the \eth macro from this package is, unlike \phi, a text macro and not a math macro, so either use it outside of a math environment or surround it with \text{..} from the amsmath package
if your tex distribution is not totally out of date, you don't need \usepackage[utf8]{inputenc}, that's the default since a couple of years
\documentclass{article}
\usepackage{amsmath}
\usepackage{stix}
\DeclareUnicodeCharacter{0360}{\eth}
\begin{document}
ð
$\text{ð}$
\end{document}
or avoid all the trouble and simply use an unicode aware engine like lualatex:
% !TeX TS-program = lualatex
\documentclass{article}
\begin{document}
ð
\end{document}
I'd like to create a single symbol which is contains a delta "∆" and a t.
For visualisation purposes i use Matlab Live Script.
Combining several latin letters is easy done by:
sym('dt')
But these either result in an exception or don't do a conversion:
sym('Delta t')
sym('Deltat')
The workaround to multiply two symbols does not work in all cases:
sym('Delta')*sym('t')
(sym('Delta')*sym('t'))^2
However, if i square the symbol, i'd like to have this behavior:
sym('dt')^2
But it should contain the delta symbol:
Is this what you want?
title('\Deltat')
If you want, you can also do
title('\Deltat^{2}')
The answer is no, you cant use non-ASCII for variables in MATLAB. This means no \Delta, no \epsilon, or any other non-standard chars.
You can generate the LaTeX representation of the results, and then print them either in text in MATLAB or in your favourite LaTeX editor with the function latex
How can I added a note on a figure plot in Matlab which contain math symbols (kappa, gamma, alpha, symbol of containing, ...) as explained in the image:
You can add a text label using the text command.
For example
plot(0:10, (0:10).^2);
% Add text at x=5, y=10
text(5, 10, 'this is text');
% Add text at x=5, y=50, with Greek letters
text(5, 50, '\pi is nice, \alpha is too');
This works because the interpreter is set to LaTeX by default. For the full list of supported TeX commands, see this list in the documentation. In particular, since you asked about Greek letters, here is a basic list. Most are as you would expect, preceded by a backslash:
Character Sequence Symbol
\alpha α
\beta β
\gamma γ
\delta δ
\epsilon ɛ
\zeta ζ
\eta η
\theta Θ
\kappa κ
\lambda λ
\mu µ
\xi ξ
\pi π
\rho ρ
\sigma σ
Notes on the LaTeX interpreter.
You can also render maths inside text captions (or axes labels, and chart titles) using $inline mode$ or $$display mode$$. See the linked docs for more details.
You can set the default interpreter to LaTeX (if for some reason it isn't) using
set(0,'defaulttextinterpreter','latex')
The default interpreter is already latex so all you have to do is something like this as an example. not the backslash to access the latex commands. You will have to search what symbols you want on the internet.
legend('\rho = 0.5')
I would like to use the Letter μ (LaTeX: \mu) in my surface plot. Unfortunately when I use the LaTeX symbol \mu in the zlabel('Power [\muW]'); command it results in:
'Power [ μ W]' instead of 'Power [μW]'
How can I avoid these spaces around μ?
I can't reproduce your problem, which could be due to you using an older version of Matlab. In the past it was neccesary to set the latex interpreter fist, before using Latex syntax. So the following should work:
zlabel('Power [$$\mu$$W]','interpreter','latex');
Nowadays it seems to recognize automatically at least greek letters.
Is it possible using Greek alphabet to represent variables in MATLAB?
For example, I'd like to use the Greek character epsilon as a variable in MATLAB. I tried to insert \epsilon but I received an error.
It is not possible.
I refer to the following part of Matlab documentation:
Valid Names
A valid variable name starts with a letter, followed by letters,
digits, or underscores. MATLAB is case sensitive, so A and a are not
the same variable. The maximum length of a variable name is the value
that the namelengthmax command returns.
Letter is defined as ANSI character between a-z and A-Z.
For example, the following hebrew letter Aleph returns false (in Matlab R2018a returns true):
isletter('א')
By the way, you can always check whether your variable name is fine by using genvarname.
genvarname('א')
ans =
x0x1A
While Andrey's answer is true for variable names it's a different story for figures.
title('\epsilon\omega') will actually work and generate an epsilon and an omega as title (although the matlab font replaces them with different symbols). If you export the figure as an eps or pdf file you will see that the title really is epsilon omega. Actually any LaTeX control sequence will work!
Same is true for all the figure text objects such as legends and axis labels.