Physics
From wikiluntti
Introduction
Lagrangian mechanics
https://jacopobertolotti.com/LagrangianIntro.html?t=_5Jje_Wuf6wuYYp7sAX2Fw&s=33
Quantum
Unraveling long-time quantum dynamics using flow equations https://scirate.com/arxiv/2308.13005?t=2SNTGzgANBUWMXhb3GhgWg&s=33