  The paper establishes the new state-of-art in the accuracy analysis of
Hutchinson's trace estimator. Leveraging tools that have not been previously
used in this context, particularly hypercontractive inequalities and
concentration properties of sub-gamma distributions, we offer an elegant and
modular analysis, as well as numerically superior bounds. Besides these
improvements, this work aims to better popularize the aforementioned techniques
within the CS community.
