A Collaboratively Edited Textbook on the Foundations of Quantum Mechanics https://book.mattleifer.info/ 2026-04-17T21:14:40+00:00 https://book.mattleifer.info/ https://book.mattleifer.info/lib/exe/fetch.php?media=wiki:logo.png text/html 2025-08-09T00:21:52+00:00 Anonymous (anonymous@undisclosed.example.com) https://book.mattleifer.info/doku.php?id=two_ways:quantum_theory_two_ways&rev=1754698912&do=diff Quantum Theory Two Ways In this section, we will look at two fairly informal ways to arrive at the basic mathematical formalism for quantum theory. It is intended to be accessible to those who have not seen the quantum formalism before, and it may seem trivial to those who have taken