Diagonal (original) (raw)
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A diagonal of a square matrix which is traversed in the "southeast" direction. "The" diagonal (or "main diagonal," or "principal diagonal," or "leading diagonal") of an 
square matrix is the diagonal from 
to 
.
The solidus symbol / used to denote division (e.g., 
) is sometimes also known as a diagonal.
See also
Cantor Diagonal Method, Diagonal Matrix, Diagonal Metric, Diagonal Ramsey Number, Diagonal Triangle, Diagonalizable Matrix, Polygon Diagonal, Polyhedron Diagonal, Shallow Diagonal, Skew Diagonal, Solidus, Subdiagonal,Superdiagonal, Tridiagonal Matrix
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Cite this as:
Weisstein, Eric W. "Diagonal." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Diagonal.html