Which of these do you want to learn more about: - What e^A means when A is a matrix - How to think about solutions to linear systems of ordinary differential equations.
-
A beautiful little result about exponentiation that should be much better known is this result of Thompson's; it says exponentiation of Hermitian matrices almost commutes.pic.twitter.com/LotR9av0cf
The history and proof of the theorem is actually rather complex, but is described in section II.A of this paper (bottom left, page 2): https://arxiv.org/pdf/quant-ph/0307190.pdf …
