Invertible matrix
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Invertible matrix and Pseudo-inverseMath/Linear algebra 2019. 10. 8. 15:36
1. Overview $$AB=BA=I_{n}$$ 2. Description 2.1 Pre-requirement A matrix is invertible if it is Square matrix Full rank Non-zero determinant 2.2 Properties Let $A$ be a square n by n matrix over a field $K$ (for example the field $R$ of real numbers). The following statements are equivalent for any given matrix are either all true or all false: A is invertible, that is, A has an inverse, is nonsi..