Trace (linear algebra)
SUM OF THE ELEMENTS OF THE MAIN DIAGONAL OF A SQUARE MATRIX
Trace of a matrix; Trace of a square matrix; Matrix trace; Trace-free; Trace (matrix); Traceless; Trace of an endomorphism; Trace matrix; Trace (mathematics); Trace function; Exponential trace; Trace of a linear operator
In linear algebra, the trace of a square matrix , denoted , is defined to be the sum of elements on the main diagonal (from the upper left to the lower right) of . The trace is only defined for a square matrix ().