Matrix Main Diagonal

A Matrix Main Diagonal of an [math]\displaystyle{ n \times m }[/math] matrix is a vector [math]\displaystyle{ v }[/math] where [math]\displaystyle{ v_i = A_{i,i} }[/math].

• See: Matrix, Diagonal Matrix.

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References

2013

• http://en.wikipedia.org/wiki/Main_diagonal
  • In linear algebra, the main diagonal (sometimes leading diagonal or major diagonal or primary diagonal or principal diagonal) of a matrix [math]\displaystyle{ A }[/math] is the collection of entries [math]\displaystyle{ A_{i,j} }[/math] where [math]\displaystyle{ i }[/math] is equal to [math]\displaystyle{ j }[/math].

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