Exponential Trace
Expressions like exp(tr(A)), where A is a square matrix, occur so often in some fields (e.g. multivariate statistical theory), that a shorthand notation has become common:
This is sometimes referred to as the exponential trace function; it is used in the Golden Thompson inequality.
Read more about this topic: Trace (linear Algebra)
Famous quotes containing the word trace:
“Beauty is a precious trace that eternity causes to appear to us and that it takes away from us. A manifestation of eternity, and a sign of death as well.”
—Eugène Ionesco (b. 1912)