Questions tagged [matrices]
{matrices} is about matrices in {equations} and {diagrams}.
2,003
questions
150
votes
2
answers
1.1m
views
Matrix in Latex
I am new to Latex, and I have been trying to get the matrix of following form
[x11 x12 x13 . . . . x1n
x21 x22 x23 . . . . x2n
.
.
.
.
xd1 xd2 xd3 . . . . xdn]
...
- 1,603
112
votes
5
answers
355k
views
95
votes
2
answers
41k
views
How to use more than 10 tab stops in bmatrix or other amsmath matrix environments?
I'm using bmatrix environment from the amsmath package, and I'm trying to do something like this:
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{equation}
\begin{...
- 18.2k
92
votes
3
answers
104k
views
How can I increase the line spacing in a matrix?
I'm trying to create a pmatrix whose components are rather complicated fractions (Christoffel symbols), and the line spacing is too small making the whole thing a bit cramped and hard to read.
Is ...
- 1,093
88
votes
7
answers
134k
views
How do I left-align entries in a matrix with \begin{matrix}?
I'd like to left align the -1 entry in the following matrix so that the 1s line up. Is there a way to get matrices to ignore signs in that way?
\begin{matrix}
1 & 1 \\
1 & -1 \\
\end{...
- 3,721
86
votes
2
answers
23k
views
"Single ampersand used with wrong catcode" error using tikz matrix in beamer
I am having trouble getting a basic example of a matrix of notes to show up in my beamer presentation. I am using the code copied from the pgf manual. Here is a complete working example. The error I ...
user4692
83
votes
2
answers
347k
views
3 dots in matrix
I was wondering if anyone knew how to draw 3 dots in a matrix that go in a diagonal way usually to represent that element flow similarily in the slots. I know there's one that goes in the bottom right ...
alice
78
votes
10
answers
118k
views
What's the best way make an "augmented" coefficient matrix?
When studying systems of linear equations, it's nice to remind people that the last column of the coefficient matrix holds the constants. This is often done in books by putting a vertical line ...
- 935
77
votes
5
answers
132k
views
Label rows of a matrix by characters
How to add label to index the rows and columns of the matrix ?
because I want to number the line outside the matrix
\[
\begin{array}{lc}
\ Mat_{\varPhi to M} & \left(\begin{array}{@...
- 1,303
72
votes
13
answers
46k
views
Highlight elements in the matrix
I have a matrix and need to highlight some elements in the matrix. I have found how to highlight a single element (I want to put the cell in the square):
$$ A = \begin{bmatrix}
\fbox{0} & \fbox{0}...
- 721
67
votes
5
answers
626k
views
How to write an m⨉n matrix in LaTeX?
I tried using the below code but it works only for 2⨉2 matrix.
\[
M=
\left[ {\begin{array}{cc}
1 & 2 \\
3 & 4 \\
\end{array} } \right]
\]
Now the following doesn't work for me:
...
- 1,279
63
votes
2
answers
48k
views
How to create a matrix with 20 columns in latex
The code below works, but when I add 10 more columns, it does not. So, how can I add ten more columns to the matrix below?
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{...
- 3,483
61
votes
9
answers
250k
views
typesetting column vector
I would like to define a command which typesets a column vector.
For one vector I can have something like:
\left(
\begin{array}{c}
a\\
b\\
\end{array}
\right)
I would like the command to produce ...
- 22.8k
58
votes
12
answers
23k
views
Is there a way to automatically transpose a matrix written in Latex?
As writing matrices in LaTeX is an extremely time-consuming activity, I was wondering if a software or a site exists that automatically gave the transposed form of a matrix, that is to say, given a ...
56
votes
3
answers
62k
views
How to typeset a matrix with MathJax?
I need to typeset a matrix with square brackets as delimiters for math.se (I believe they use MathJaX). How would I do that?
- 561
52
votes
5
answers
20k
views
How do I label different rows or columns of a matrix using braces?
I have a matrix enclosed in brackets [ ] (or (), or {}, or |'s, or ||'s):
- a b c d -
| e f g h |
| i j k l |
- m n o p -
which I want to label like so:
R
|---|
-- - a b c d -...
- 3,575
51
votes
5
answers
11k
views
Perform matrix operations (addition, product, transpose, etc.) in LaTeX?
I know the calc package can perform infix-notation arithmetic in LaTeX... but I want more!
I'd like to perform (not necessarily infix-notation) linear-algebra operations such as scalar ...
- 59.5k
48
votes
3
answers
399k
views
Help me input a column vector
I'm trying to input an arrow vector (a column vector, see the picture) in an align environment, but it reports an error.
Can someone show me the TeX code of it in an align environment?
- 481
47
votes
2
answers
31k
views
TikZ matrix as a replacement for tabular
I would like to use TikZ matrices to for some drawings. I am currently using nodes and positioning them manually to simulate a tabular. That helps in positioning arrows and shading.
However, if I use ...
- 8,151
45
votes
1
answer
70k
views
How do I get normal-sized fractions in my matrices?
I would like to write something like the definition of a gradient operator in cartesian coordinates.
\usepackage{amsmath}
\begin{equation}
\nabla \Phi =
\begin{pmatrix}
\frac{\partial ...
- 942
44
votes
3
answers
53k
views
Upper triangular matrix with big zero in lower triangular?
I can represent an upper trapezoidal matrix say as shown below. I would like to replace all those zeros with a single big zero that spans across the low triangle rows and columns, and maybe also add a ...
- 1,897
43
votes
8
answers
19k
views
Using display style fraction in a matrix environment
I'd like use the \dfrac command in a bmatrix environment as follows:
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\[
\begin{bmatrix}
\dfrac{\partial f}{\partial x}
\\
\dfrac{\...
- 1,087
43
votes
2
answers
154k
views
How to draw matrix with dots?
How can I draw a matrix with dots in tex like the one shown below:
- 495
41
votes
4
answers
14k
views
Multirow/multicolumn cells in TikZ matrices?
Is it possible to make TikZ matrix cells span multiple rows/columns, like they can in LaTeX tables using \multirow or \multicolumn? Specifically, I'd like to typeset something like the following in a ...
- 1,022
40
votes
2
answers
163k
views
Vertical line in matrix using LaTeXiT [duplicate]
Possible Duplicate:
What's the best way make an “augmented” coefficient matrix?
I am trying to make a vertical line in a matrix in LaTeXiT. I have read that it should be possible ...
- 503
40
votes
7
answers
37k
views
Matrix change row or column background
I have a matrix shown below. I would like to have the whole row green rather than only the cells.
How can I do that?
\begin{equation}\label{eq:appendrow}
\newcommand\x{\times}
\newcommand\y{\...
- 1,897
40
votes
1
answer
111k
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.
...
33
votes
4
answers
171k
views
How to draw the calculation of a determinant?
I'm trying to reproduce the following calculation of a determinant in LaTeX:
Any ideas? I thought of using the tabular environment but unfortunately I'm not able to align the "=" correctly.
- 333
32
votes
4
answers
35k
views
Where is the \matrix command?
From what I can see, \matrix was a TeX command, but I cannot seem to find documentation on it.
It works in MathJax, so I wonder if it can be used in LaTeX.
ie this is valid MathJax:
$$
\left[
\...
- 4,456
32
votes
3
answers
65k
views
How do I make a small pmatrix?
I want a small matrix but the only command I can find is \smallmatrix which leaves the brackets out. Is there a simliar one that includes brackets?
- 421
32
votes
3
answers
86k
views
Vertical spacing between fractions in matrix environment [duplicate]
Possible Duplicate:
How can I increase the line spacing in a matrix?
Using display style fraction in a matrix environment
How to add extra spaces between rows in tabular environment?
When a ...
- 996
31
votes
5
answers
74k
views
Diagonal dots spanning multiple lines/columns of a matrix
I'm filling in large sparse matrices, for example
\begin{bmatrix}
0 & -2 & 1 & & -1 & 2 \\
2 & \ddots & \ddots & \ddots & & -1 \\
...
- 413
30
votes
2
answers
3k
views
Levi-Civita symbol: 3D matrix
During the current review of the tensors I have arrived at a page of Wikipedia where you can see the symbol of Levi-Civita in a beautiful three-dimensional matrix.
I hope that nobody will be angry ...
- 56.8k
30
votes
3
answers
85k
views
vertical and horizontal line in a matrix
I want to create a bmatrix on the right
\documentclass[10pt,a4paper]{article}
\usepackage[english]{babel}
\usepackage{amsmath}
\begin{document}
\begin{equation}
\begin{bmatrix}[c|c]
_B[T]_B &...
- 401
29
votes
8
answers
71k
views
How to construct a confusion matrix in LaTeX?
A confusion matrix looks like:
Is there an easy way to do the same using LaTeX?
Otherwise I could just create a diagram with any software.
- 545
28
votes
4
answers
4k
views
Problem with defining shortcuts for TikZ matrices
For answering a question yesterday I wanted to define a shortcut for creating a matrix inside a tikzpicture. As a minimal example, consider
\newcommand\mymatrix[1]{
\begin{tikzpicture}
\...
- 90.2k
28
votes
3
answers
24k
views
How do I typeset vertical and horizontal lines inside a matrix?
(From the notation used in course notes for Stanford CS229 available online.) I'm trying to typeset the following matrices made up of row or column vectors:
Any ideas?
- 383
27
votes
6
answers
188k
views
How to have matrices side by side in latex?
I'm new to latex and all of my matrices seem to be created on new lines, I can't seem to put them side by side. Here is what I am doing to make a matrix (with the 2d identity matrix as an example):
\...
user3231
27
votes
2
answers
25k
views
Matrix in a matrix
I would like to draw a matrix with top left, top right, bottom left and bottom right blocks.
The top left should be a 3x3 matrix with numerical entries, the top right is 0, the bottom left is 0 and ...
- 273
26
votes
3
answers
17k
views
Aligning the minus sign in a matrix
I would like to be able to align the minus sign in a matrix so that the minus is to the left of the numerical column. I have written my matrix as the following:
\begin{eqnarray}
\left(
\begin{...
- 765
26
votes
4
answers
10k
views
Draw a line through one column of a matrix
I'd like to "cancel" (draw a line through) a column of a matrix (using \begin{pmatrix}..\end{pmatrix}). How can I do this?
- 4,272
24
votes
6
answers
21k
views
bordermatrix with blocks
I need to write a complicated matrix, that has a structure as in the attached picture.
user3307
23
votes
3
answers
23k
views
Underbrace in a matrix
I want to display the structure of a matrix as shown in the image below:
Can this be done using pmatrix and \underbrace?
My attempt at combining pmatrix and \underbrace results in a compile error.
\...
- 6,372
23
votes
7
answers
17k
views
Formatting arrows between rows of corresponding matrices
Some material I'm creating requires output that looks like this:
(note the position of the arrows).
I'm using the following code (with the AMS macros) to generate this, and I'm looking for ...
- 3,683
22
votes
4
answers
3k
views
Matrix with labels nested in braces
What's the best way to produce a matrix with labels that are nested in braces, like this:
- 323
22
votes
2
answers
46k
views
How to write matrices with dimensions in latex?
I am just starting to use latex, and with all the internet help i figured out how to do many things myself, but now i am stuck. How can I write what you all can see in the picture?
Thanks for the ...
- 321
22
votes
3
answers
5k
views
How can I visualize Matrix operations?
I would like to visualize some matrix operations like that:
How can I do that (preferably something that also works for mathjax)?
- 19k
21
votes
5
answers
3k
views
Huge matrix in my document. Possible ways to make it look better?
The following is the source for a matrix I'm using in my document:
\documentclass{scrartcl}
\usepackage[english]{babel}
\usepackage[T1]{fontenc}
\usepackage[latin1]{inputenc}
\usepackage{amsmath}
\...
- 709
21
votes
3
answers
38k
views
Adjusting separation between matrix entries
I have a very large matrix which overflows in the margin. I would like the matrix to fit inside the margins, but I would like to do this without rescaling it, and also without affecting other array-...
- 345
21
votes
2
answers
11k
views
Creating a matrix with column or row vectors as arguments
At times it's convenient to write a matrix in terms of it's row or column component vectors instead of explicitly giving each particular scalar entry. I'm basically talking about this:
I did some ...
- 311