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Jordan normal form - Wikipedia
Jordan normal form
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An example of a matrix in Jordan normal form. The grey blocks are called Jordan blocks.
<span>In linear algebra, a Jordan normal form (often called Jordan canonical form) [1] of a linear operator on a finite-dimensional vector space is an upper triangular matrix of a particular form called a Jordan matrix, representing the operator with respect to some basis. Such a matrix has each non-zero off-diagonal entry equal to 1, immediately above the main diagonal (on the superdiagonal), and with identical diagonal entries to the left and below them.
Let V be a vector space over a field K. Then a basis with respect to which the matrix has the required form exists if and only if all eigenvalues of the matrix lie in K, or equivalent Summary
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