Equivalent Matrix in Z[i] Module: How to Transform Vectors?

In summary, the conversation discusses transforming vectors in the Z[i] module using a transformation matrix. The individual is unable to reduce the matrix to diagonal form due to only being able to multiply by integer numbers. The diagonal matrix is eventually determined to be 1 0, 0 8+11i. The concept of the Z[i] module is also discussed, with it being clarified as a module where the coefficients are from the ring of Gaussian integers. The use of the word "Gaussian" is questioned.
  • #1
pivoxa15
2,255
1

Homework Statement


How do you turn the transformation matrix

1+i 3
2-i 5i

into a diagonal matrix when it is transforming vectors in the Z module?

What is the Z module? Normally one states R module M. where R is the coefficient one multiplies to the elements in the module.

The Attempt at a Solution


I have tried but can't seem to reduce to diagonal form as I can only multiply by integer numbers?
 
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  • #2
I have just worked out the diagonal matrix. It is

1 0
0 8+11i

However my question of what is the Z module still stands. I know clearly what a Z ring is.
 
  • #3
Z is the same whether you think of it as a ring or a module- the "Gaussian integers"- all numbers of the form a+ bi where a and b are integers and i is, of course, the imaginary unit.
 
  • #4
I think that the Z module is referring to any module where the coefficients are from the ring of the Gaussian integers. Why use the word Gaussian?
 

What is an "Equivalent Matrix in Z[i] Module"?

An equivalent matrix in Z[i] module is a matrix that represents the same linear transformation as another matrix, but with respect to a different basis. In this case, the basis used is the set of complex numbers of the form a + bi, where a and b are integers and i is the imaginary unit.

How do I determine the equivalent matrix in Z[i] module for a given matrix?

To determine the equivalent matrix in Z[i] module, you need to find the transformation matrix that converts the original basis to the complex basis of a + bi. This can be done by solving a system of equations using the original basis vectors and the complex basis vectors.

What is the significance of transforming vectors in Z[i] module?

Transforming vectors in Z[i] module allows for a more concise and efficient representation of linear transformations that involve complex numbers. It also allows for easier computation and manipulation of these transformations.

Can any matrix be transformed into an equivalent matrix in Z[i] module?

Yes, any matrix can be transformed into an equivalent matrix in Z[i] module as long as it represents a linear transformation. However, the resulting matrix may not always be in the most simplified form.

Are there any practical applications for equivalent matrices in Z[i] module?

Equivalent matrices in Z[i] module have applications in various fields such as physics, engineering, and computer science. They are particularly useful in representing and analyzing systems that involve complex numbers, such as electrical circuits and quantum mechanics.

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