Basis of skew symmetric matrix

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Homework Help Overview

The discussion revolves around finding a basis for a 3x3 skew-symmetric matrix, defined by the property that the transpose of the matrix is equal to its negative.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants are questioning the dimension of the matrix and the number of independent elements. There is uncertainty about how to express the basis for the skew-symmetric matrices.

Discussion Status

Some participants have provided insights into the dimensions of matrices, with one noting the difference between the dimension of a general 3x3 matrix and that of a skew-symmetric matrix. There is an ongoing exploration of the relationships between the elements of the matrix.

Contextual Notes

Participants are discussing the constraints imposed by the skew-symmetric property, which affects the number of independent elements in the matrix.

chuy52506
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Homework Statement


Let W be a 3x3 matrix where A^t(transpose)=-A. Find a basis for W.


Homework Equations



Find a basis for W.

The Attempt at a Solution


I have no idea how to start it.
 
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What is the dimension of A? Count the independent elements.
 
the dimension is 9 correct? I don't know how to express the basis though.
 
9 is the dimension of an arbitrary 3x3 matrix. Under the constraint AT = -A you have fewer independent elements. Can you identify which elements are dependent upon or equal to one another?
 

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