identity matrix

square matrix with ones on the main diagonal and zeros elsewhere

en-US/aɪˈdɛntɪti ˈmeɪtɹɪks/
en-GB/aɪdɛntɪtiː ˈmeɪtɹɪks/

Categories:

identity elementidempotent matrixalternating sign matrixsignature matrixscalar matrixorthostochastic matrixunistochastic matrixpermutation matrix