Find Jordan Canonical Form with Maple

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SUMMARY

The discussion focuses on finding the Jordan Canonical Form of a specific 10x10 nilpotent matrix using Maple or GNU Octave. The matrix has been confirmed to be nilpotent as its sixth power results in the zero matrix. The signature of the matrix is identified as (0, 5, 0, 3, 0, 2). The Jordan Canonical Form is computed using the 'jordan' function in GNU Octave, yielding a specific block structure that represents the matrix's eigenvalues and their algebraic multiplicities.

PREREQUISITES
  • Understanding of nilpotent matrices and their properties
  • Familiarity with Jordan Canonical Form and its significance in linear algebra
  • Basic knowledge of Maple and GNU Octave for matrix computations
  • Experience with matrix signatures and eigenvalue analysis
NEXT STEPS
  • Learn how to use the 'jordan' function in GNU Octave for Jordan form calculations
  • Explore nilpotent matrices and their applications in linear algebra
  • Study the properties of Jordan blocks and their implications for matrix theory
  • Investigate the use of Maple for symbolic computations in linear algebra
USEFUL FOR

Mathematicians, students in linear algebra courses, and anyone involved in computational mathematics who needs to understand matrix theory and Jordan Canonical Forms.

joypav
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Hi all!
I have to show that the matrix 10x10 matrix below is nilpotent, determine its signature, and find its Jordan canonical form.

[-2 , 19/2 , -17/2 , 0 , -13 , 9 , -4 , 7 , -2 , -13]
[15 , -51 , 48 , -8 , 80 , -48 , 19 , -39 , 10 , 74]
[-7 , 34 , -33 , 0 , -50 , 31 , -11 , 27 , -6 , -47]
[1 , -4 , 4 , -1 , 7 , -4 , 1 , -3 , 1 , 6]
[0 , -2 , 2 , 0 , 3 , -2 , 1 , -1 , 0 , 3]
[-11 , 91/2 , -87/2 , 4 , -70 , 42 , -16 , 35 , -8 , -65]
[-1 , 9/2 , -9/2 , 0 , -7 , 4 , -1 , 4 , -1 , -6]
[-9 , 39 , -37 , 2 , -58 , 36 , -14 , 30 , -7 , -55]
[-7 , 32 , -31 , 1 , -48 , 29 , -11 , 25 , -5 , -45]
[5 , -25/2 , 23/2 , -3 , 20 , -12 , 5 , -10 , 3 , 18]

I've shown that the matrix to the sixth power is the zero matrix (so it's nilpotent). And I believe the signature is (0, 5, 0, 3, 0, 2).. if I've done it correctly.

Anyways, I have not yet found the Jordan Canonical form. We are allowed to use Maple but I do not yet have it for my laptop (an old professor of mine said he would get it for me so I don't have to pay). I know there is a command in Maple that will find it for you.
Could someone with Maple (or Matlab) find it for me? I would really appreciate it!
 
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joypav said:
Hi all!
I have to show that the matrix 10x10 matrix below is nilpotent, determine its signature, and find its Jordan canonical form.

[-2 , 19/2 , -17/2 , 0 , -13 , 9 , -4 , 7 , -2 , -13]
[15 , -51 , 48 , -8 , 80 , -48 , 19 , -39 , 10 , 74]
[-7 , 34 , -33 , 0 , -50 , 31 , -11 , 27 , -6 , -47]
[1 , -4 , 4 , -1 , 7 , -4 , 1 , -3 , 1 , 6]
[0 , -2 , 2 , 0 , 3 , -2 , 1 , -1 , 0 , 3]
[-11 , 91/2 , -87/2 , 4 , -70 , 42 , -16 , 35 , -8 , -65]
[-1 , 9/2 , -9/2 , 0 , -7 , 4 , -1 , 4 , -1 , -6]
[-9 , 39 , -37 , 2 , -58 , 36 , -14 , 30 , -7 , -55]
[-7 , 32 , -31 , 1 , -48 , 29 , -11 , 25 , -5 , -45]
[5 , -25/2 , 23/2 , -3 , 20 , -12 , 5 , -10 , 3 , 18]

I've shown that the matrix to the sixth power is the zero matrix (so it's nilpotent). And I believe the signature is (0, 5, 0, 3, 0, 2).. if I've done it correctly.

Anyways, I have not yet found the Jordan Canonical form. We are allowed to use Maple but I do not yet have it for my laptop (an old professor of mine said he would get it for me so I don't have to pay). I know there is a command in Maple that will find it for you.
Could someone with Maple (or Matlab) find it for me? I would really appreciate it!

With GNU Octave (open source version of MatLab):
Code:
A=[[-2 , 19/2 , -17/2 , 0 , -13 , 9 , -4 , 7 , -2 , -13]
[15 , -51 , 48 , -8 , 80 , -48 , 19 , -39 , 10 , 74]
[-7 , 34 , -33 , 0 , -50 , 31 , -11 , 27 , -6 , -47]
[1 , -4 , 4 , -1 , 7 , -4 , 1 , -3 , 1 , 6]
[0 , -2 , 2 , 0 , 3 , -2 , 1 , -1 , 0 , 3]
[-11 , 91/2 , -87/2 , 4 , -70 , 42 , -16 , 35 , -8 , -65]
[-1 , 9/2 , -9/2 , 0 , -7 , 4 , -1 , 4 , -1 , -6]
[-9 , 39 , -37 , 2 , -58 , 36 , -14 , 30 , -7 , -55]
[-7 , 32 , -31 , 1 , -48 , 29 , -11 , 25 , -5 , -45]
[5 , -25/2 , 23/2 , -3 , 20 , -12 , 5 , -10 , 3 , 18]];

pkg load symbolic
jordan(sym(A))
  ⎡0  1  0  0  0  0  0  0  0  0⎤
  ⎢                            ⎥
  ⎢0  0  1  0  0  0  0  0  0  0⎥
  ⎢                            ⎥
  ⎢0  0  0  1  0  0  0  0  0  0⎥
  ⎢                            ⎥
  ⎢0  0  0  0  1  0  0  0  0  0⎥
  ⎢                            ⎥
  ⎢0  0  0  0  0  0  0  0  0  0⎥
  ⎢                            ⎥
  ⎢0  0  0  0  0  0  1  0  0  0⎥
  ⎢                            ⎥
  ⎢0  0  0  0  0  0  0  1  0  0⎥
  ⎢                            ⎥
  ⎢0  0  0  0  0  0  0  0  0  0⎥
  ⎢                            ⎥
  ⎢0  0  0  0  0  0  0  0  0  1⎥
  ⎢                            ⎥
  ⎣0  0  0  0  0  0  0  0  0  0⎦
 

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