Structure and Interpretation of Classical Mechanics (2015)
Sussman is one of the very few classical mechanics textbooks that gives a reasonable definition of the Legendre transform. Most physicists cannot actually tell you what that transform is, even though it sits at the heart of both classical and quantum mechanics.<p><a href="http:&#x2F;&#x2F;blog.jessriedel.com&#x2F;2017&#x2F;06&#x2F;28&#x2F;legendre-transform&#x2F;" rel="nofollow">http:&#x2F;&#x2F;blog.jessriedel.com&#x2F;2017&#x2F;06&#x2F;28&#x2F;legendre-transform&#x2F;</a>