Matrice unité
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Définition
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Identity Matrix
An identity matrix, also known as a unit matrix, is a square matrix in which all of the elements of the principle diagonal are ones, and the rest are zeros. Because an identity matrix is a square matrix, its number of rows matches its number of columns. When multiplying a given matrix with an identity matrix, the values remain the same. In short, the identity matrix functions in the same way that the number 1 does within a real number system.
Contributeurs: Arielle Halindintwali, Imane Meziani, wiki
