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References to 'identity matrix'
1. adjacency matrix by CWoo
2. bilinear form by rmilson
3. category of matrices by rspuzio
4. Cayley's parameterization of orthogonal matrices by rspuzio
5. centralizer of matrix units by asteroid
6. change of basis by CWoo
7. characteristic values and vectors (of a matrix) by perucho
8. classical groups by Algeboy
9. commutant of $B(H)$ is $\mathbb{C}I$ by asteroid
10. commuting matrices by Algeboy
11. determinant as a multilinear mapping by rmilson
12. diagonal matrix by rspuzio
13. Donaldson's theorem by whm22
14. eigenvalue (of a matrix) by mathcam
15. elementary matrix by CWoo
16. example of Banach algebra which is not a $C^*$-algebra for any involution by asteroid
17. example of matrix representations by drini
18. example of permutation matrix by Wkbj79
19. examples of groups by AxelBoldt
20. finite projective plane by Mathprof
21. generalized B\'ezout theorem on matrices by perucho
22. Hadamard matrix by Koro
23. Householder transformation by mathcam
24. jet bundle by rspuzio
25. Kronecker delta by akrowne
26. lecture notes on determinants by rmilson
27. lecture notes on the Cayley-Hamilton theorem by rmilson
28. matrices of special form by matte
29. matrix exponential by mathcam
30. matrix inverse by akrowne
31. matrix unit by CWoo
32. modular group by rm50
33. modular theory by Algeboy
34. monodromy group by rspuzio
35. multivariate distribution function by CWoo
36. orthogonality relations by mhale
37. Pauli matrices by invisiblerhino
38. permutation matrix by Wkbj79
39. physical vector by rmilson
40. proof of Cramer's rule by rmilson
41. reciprocal polynomial by rspuzio
42. resolvent matrix by mps
43. Rodrigues' rotation formula by acastaldo
44. rotation matrix by matte
45. Schur complement by georgiosl
46. similar matrix by Wkbj79
47. triangular matrix by Wkbj79
48. zero matrix by waj