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Everything about Defective matrix

Non-diagonalizable matrix; one lacking a basis of eigenvectors

In linear algebra, a defective matrix is a square matrix that does not have a complete basis of eigenvectors, and is therefore not diagonalizable. In particular, an matrix is defective if and only if it does not have linearly independent eigenvectors. A complete basis is formed by augmenting the eigenvectors with generalized eigenvectors, which are necessary for solving defective systems of ordinary differential equations and other problems. Wikipedia →

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  5. Go sideways: Triangular matrixA closely related topic
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📖 Definitions

Noun A square (n×n) matrix that has fewer than n linearly independent eigenvectors, and is therefore not diagonalisable.

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