Linked Questions

34
votes
1answer
74k views

How to represent the trace of a matrix [duplicate]

Possible Duplicate: Define additional math operators to be typeset in roman The trace of a matrix is often written as "Tr [matrix] ", but there does not seem to be a naive LaTeX symbol for this. ...
18
votes
1answer
30k views

How to type error function in LaTeX math environment [duplicate]

Possible Duplicate: Define additional math operators to be typeset in roman It may be a very simple question to people who know. If I want to type commonly used functions like exponential ...
8
votes
1answer
17k views

How should I write arctanh? [duplicate]

Possible Duplicate: Define additional math operators to be typeset in roman If I want to use the function sin in LaTeX, I write $\sin x$ or $\sin(x+1)$. If I want to use the function arctanh, I ...
8
votes
1answer
14k views

Is there a command for inverse secant (arcsec)? [duplicate]

Possible Duplicate: Define additional math operators to be typeset in roman \arccos, \arcsin, and \arctan seem to work, but not \arcsec, \arccot, \arccsc. I'm using the following math packages: ...
6
votes
1answer
14k views

Trigonometric function script? [duplicate]

Is there a script for the sinc function analogous to \sin for sinus? If not, what method should I use to insert it in a equation?
1
vote
2answers
3k views

What is the correct way of writing the support of a function in math mode? [duplicate]

So far i have been using $\text{supp} u$ but that is very cumbersome and probably wrong, do we have an equivalent of \lim for $\lim$?
1
vote
2answers
6k views

Avoiding italicization in math mode [duplicate]

I want to avoid text being italicized when it's inside dollar signs. For example I want the Gal part of $Gal(f)$ to show as plain text, without having to write Gal$(f)$. How do I do this? Thanks.
3
votes
1answer
1k views

How to express “null T” in math mode [duplicate]

What is the correct way to express "null T", which represents the nullspace of a linear map T? I've been doing \newcommand{\nullspace}{\text{null }} which is a hack, but I want there to be a space ...
2
votes
1answer
5k views

Definition of cotan function [duplicate]

Possible Duplicate: Define additional math operators to be typeset in roman Is the cotan function defined somewhere? I cannot find it. It is defined as cotan(x)=cos(x)/sin(x). Should it be \...
2
votes
0answers
2k views

How to type hyperbolic secant (sech)? [duplicate]

Possible Duplicate: Define additional math operators to be typeset in roman I'm trying to type the sech (Hyperbolic Secant) in LaTeX, but when I do use \sech(z) it will be known as an "Undefined ...
1
vote
1answer
514 views

How to have Ran(A) in math mode? [duplicate]

Code \documentclass{article} \usepackage[T1]{fontenc} \usepackage{amsmath, amsthm, amssymb} \begin{document} $\ker(A)$ works! $\ran(A)$ does not work. \end{document} How can you have the Ran(A) in ...
1
vote
1answer
588 views

How to write maths without italics [duplicate]

Possible Duplicate: Define additional math operators to be typeset in roman easy question. I am writing some maths and I want to write the epigraph of a function so I type $epi(\varphi)$ but the ...
1
vote
1answer
442 views

Newcommand \Log [duplicate]

I would like to define a \Log command which does essentially the same as \log, but has a capital first letter (I want to use both of them). I am using amsart (I think this does not matter).
2
votes
1answer
328 views

How do I get \DeclareMathOperator to put the limit beneath? [duplicate]

I use at the picture above: \DeclareMathOperator{\vo}{vol} And this is the complete line: \[ \lim_{a}=\vo_{a} \] I can make that the a will be below the vol? (like the lim). Thank you!!
2
votes
2answers
37 views

Placing symbols under a text word [duplicate]

I want to place a limit under a word, as done here except with an arbitrary text rather than an existing math operator like lim or max. \mathop{avg}\limits_{y\in U(x)} gives me the following, but I ...

15 30 50 per page