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References to 'triangular matrix'
1. an example for Schur decomposition by georgiosl
2. BN-pair by tedgar
3. Borel subgroup by CWoo
4. Bruhat decomposition by nerdy2
5. characteristic matrix of diagonal element cross-section by lars_h
6. Cholesky decomposition by gufotta
7. commuting matrices are simultaneously triangularizable by georgiosl
8. corollary of Schur decomposition by Daume
9. determinant by rmilson
10. determining rank of matrix by Algeboy
11. diagonal matrix by rspuzio
12. eigenvalue problem by archibal
13. enumerating graphs by Algeboy
14. examples of rings by matte
15. Givens rotation by akrowne
16. Gram-Schmidt orthogonalization by akrowne
17. Householder transformation by mathcam
18. If $A \in M_n(R)$ and $A$ is supertriangular then $A^n=0$ by Daume
19. lecture notes on determinants by rmilson
20. lecture notes on the Cayley-Hamilton theorem by rmilson
21. Lie's theorem by bwebste
22. M-matrix by kshum
23. matrices of special form by matte
24. matrix factorization by mathcam
25. Nagao's theorem by bwebste
26. nichols-zoeller theorem by joking
27. nilpotent matrix by jgade
28. normal equations by akrowne
29. polynomial identity algebra by CWoo
30. proof of generalized Ruiz's identity by GeraW
31. proof of Schur's inequality by Andrea Ambrosio
32. proof of theorem for normal matrices by Andrea Ambrosio
33. proof that $\det e^A = e^{\operatorname{tr}A}$ by cvalente
34. QR decomposition by akrowne
35. reducible matrix by Mathprof
36. Schur complement by georgiosl
37. simultaneous block-diagonalization of upper triangular commuting matrices by lars_h
38. simultaneous triangularisation of commuting matrices over any field by lars_h
39. simultaneous upper triangular block-diagonalization of commuting matrices by lars_h
40. strictly upper triangular matrix by Daume
41. theorem for normal triangular matrices by Mathprof
42. theory from orders of classical groups by Algeboy
43. unit triangular matrix by Daume