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:
“And in these dark cells,
packed street after street,
souls live, hideous yet
O disfigured, defaced,
with no trace of the beauty
men once held so light.”
—Hilda Doolittle (1886–1961)