All Questions
Tagged with expression-construction matrix
16
questions
2
votes
0
answers
34
views
Setting pieces of "matrices" - unwanted behavior
I am constructing matrices whose elements are lists themselves (of varying length), and am (re)setting the entries of these matrices using among others the "All" command. It seems that in ...
- 332
3
votes
2
answers
755
views
Creating of the Jordan Canonical Form
I have a matrix polynomial P(s) and the Jordan blocks of P(s) corresponding to every eigenvalue sj (j=1,...,k).
How can the Jordan Canonical Form be generated, i.e. the block diagonal matrix which has ...
- 31
1
vote
4
answers
319
views
Creating a block diagonal matrix when the submatrices in the diagonal are unknown
Let us assume that we have an integer $j$ $(j=1,2,...,k)$ and that for every $j$ is generated a matrix $P$ of dimensions $j$x$j$ . For example, if $j=1$ then $P=(-2)$.
If $j=2$ then
$$R = \begin{...
- 51
5
votes
6
answers
1k
views
Replace element of a matrix with condition
consider a matrix
$\left( \begin{array}{ccccc} 0 & 0 & 1 \\ 1 & 0 & 0 \\ 1 & 1 & 0
\\ \end{array}\right)$
How do I do a program that does these steps
1-Replace each ...
user44376
4
votes
4
answers
475
views
Generating a family of 0-1 matrices satisfying a particular property
I'm looking for an elegant way to generate the set of all possible matrices that satisfy the following properties:
Each matrix has 9 rows and c columns, where 1<=c<=9.
Each matrix has exactly ...
- 183
0
votes
1
answer
65
views
0
votes
1
answer
776
views
How does one initialize large arrays in Mathematica with a structured format? [closed]
I want to create a 10 by 10 matrix that increases by 1 every unit across like:
1 2 3 4 5 6 7 8 9 10
11.....
Is there a function that does this without having ...
- 3
4
votes
4
answers
963
views
Writing a circular matrix
I have two square matrices, $A$ and $B$, of the same size, say, of $m \times m$. What I want is to write a programme/function of three variables, $A$, $B$ and $n$, that outputs the $mn \times mn$ ...
- 601
4
votes
3
answers
923
views
Creating a matrix under conditions
I would like to create a matrix whose elements satisfy the following conditions ( Mathematica 9 )
...
- 848
7
votes
5
answers
654
views
Elegant method of generating this matrix?
Good evening,
I need to determine an elegant (as possible) method of computing an $n\times n$ matrix below (the matrix shown is just a $16\times16$ example). I've been toying with ...
- 771
2
votes
2
answers
154
views
specified matrix query
can you tell me a way (best?) to get a matrix with i=N,j=N dimensions (quadratic) according to the following rules:
variables: N , M, n
the diagonal must contain zeros
it must contain exactly M ...
- 619
10
votes
4
answers
1k
views
8
votes
11
answers
1k
views
Ragged Diamonds
diamond[n_Integer] :=
Table[1, {#}] & /@ (Range[n]~ Join~Range[n - 1, 1, -1])
diamond[5] // MatrixForm
How could a more functional, "tablefree", solution ...
- 81.5k
19
votes
11
answers
2k
views
Efficient way to build a certain square matrix
For odd n I'm looking for a short and swift way to construct with (f.e.)
n = 3
n = 11
<...
- 81.5k
4
votes
3
answers
442
views
Efficient matrix / array generation
What is the most efficient way of generating the following matrix?
$\left(
\begin{array}{ccccc}
1 & 0 & 1 & 0 & 1 & 0 & 1 & \dots\\
\frac{1}{2} & \frac{1}{2} & 0 &...
- 8,778