Let be the ring of matrixes with elements from the ring . the set of matrixes in which all elements below the diagonal are 0. the set of matrixes with the elements in the principal diagonal are 0. the set of diagonal matrixes.

Prove that,

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- September 27th 2008, 07:07 PMroporteM_n Matrix ring
Let be the ring of matrixes with elements from the ring . the set of matrixes in which all elements below the diagonal are 0. the set of matrixes with the elements in the principal diagonal are 0. the set of diagonal matrixes.

Prove that,

- September 27th 2008, 07:20 PMThePerfectHacker