1
vote
1answer
80 views

Commutative diagram with blank spacing and crossing-layer arrows

Related to a previous post, now pardon me to go to a specific example, here is my output and my Minimum Working Environment ...
1
vote
1answer
63 views

Blank or no arrow in a commutative diagram

I learned from this nice post that a commutative diagram with the CD environment can have arrows pointing and their commands: right @>>> left @<<< down @VVV up @AAA ...
1
vote
0answers
50 views

Wrong and ugly output of an arrow

I have a weird output regarding xrightarrow{}. Why is that happening? How can I fix it? \documentclass[12pt]{article} \usepackage[top=0.3in, bottom=1.2in, left=0.8in, right=0.8in]{geometry} ...
1
vote
1answer
100 views

The meaning of $\rightsquigarrow$? [closed]

Perhaps this is not the good place to ask this question. In order to write a scientific paper, I would like to use the symbol $\rightsquigarrow$ (works also with $\leadsto$ which has a clearer ...
2
votes
1answer
142 views

To have a question mark over an arrow [duplicate]

I want to have a question mark over the arrow "\to". I cannot use "\limits^{?}" command because "\to" is not a mathematical operator. How can you have a question mark over the arrow?
13
votes
2answers
504 views

Long Dashed Right Arrow

Is there a \dashrightarrow equivalent of: \xrightarrow{\hspace*{4mm}} or \longrightarrow or a similar way to fudge it?
9
votes
4answers
317 views

Highlighting equation with arrow

I want to create an equation with highlighting as shown bellow. But using following code: \documentclass[10pt,a4paper]{article} \usepackage[utf8]{inputenc} \usepackage{amsmath} ...
0
votes
0answers
104 views

Better extensible arrows

Using amsmath and extarrows packages, we have many extensible arrows. But these arrows look ugly, since some parts in an arrow are boldfaced. Are there any better-looking extensible arrows?
8
votes
2answers
198 views

Underarrow with smaller depth, shorter minimum length, and smaller arrow head?

I am using underarrows from amsmath to decorate messages with their direction, as in $\underleftarrow{\mathsf{msg}}$ () and $\underrightarrow{\mathsf{msg}}$ (). I am looking for a better underarrow, ...
11
votes
4answers
383 views

Curved arrow describing a step in a mathematical derivation

Is it possible to achieve something like this in LaTeX? I want a curved arrrow pointing from 1st line to the other line and is coupled with an equation number which indicates the equation used. I ...
15
votes
2answers
7k views

\xRightarrow (text)

I know it's possible to have \xrightarrow (text), but if I try to do \xRightarrow (text) I get an error each time. Does anybody know if it's a syntax error or if there is a other way to produce the ...
16
votes
1answer
2k views

Is there a left-handed equivalent of \implies?

I’m aware of and use the \implies and \iff commands to denote right-handed implication and if and only if (so A=>B and A<=>B). I’ve been looking for a similar command for left-handed implication ...
6
votes
1answer
246 views

Understanding ext@arrows

I don't quite understand how \ext@arrow of amsmath is working. When I look at the code, its functionality seems straight forward to me at the first glance. \def\ext@arrow#1#2#3#4#5#6#7{% ...
2
votes
1answer
1k views

Commutative diagram with parallel arrows in opposite direction

I have a diagram of the following form, written with the package amscd: \begin{align*} \begin{CD} W @>\phi>> X \\ @V{a}V{b}V @V{c}V{d}V \\ Y @>\phi>> Z \\ \end{CD} ...
8
votes
4answers
745 views

Better transitive closure of labelled arrow

I think the answer will be easy, but I haven't found it yet: I use labelled arrows like \xrightarrow\tau a lot. Sometimes, I need the transitive closure of such relations, which I write ...