Plenio, M B and Virmani, S 2008. Many-body physics and the capacity of quantum channels with memory. New Journal of Physics, Vol. 10, Issue. 4, p. 043032.
First off, let’s be specific about the differences between modern and “old school” geometry. The reach, head angle (HA), wheelbase (WB), and effective seat angle (SA)—demonstrated below ...
Scheglov, Dmitri 2013. Growth of periodic orbits and generalized diagonals for typical triangular billiards. Journal of Modern Dynamics, Vol. 7, Issue. 1, p. 31.