The Lazy Universe: An Introduction to the

Principle of Least Action" is a rare book on a rare topic: it is about 'action' and the

Principle of Least Action.

Brizard presents students, academics, and researchers with the second edition of his comprehensive introduction to Langrangian mechanics, the history of the Langrangian method, FermatEs Principle of Least Time, and the mathematical principles of several mathematical predecessors of HamiltonEs

Principle of Least Action and the Euler-Lagrange equations of motion.

Recently derivation of CTG equations was made based on the principle of least action [3].

In this section we shall write down known relations for the Lagrange function and the principle of least action for the covariant theory of gravitation (CTG).

We shall remind that the principle of least action is usually applied to conservative systems for which precise potential functions are given, from which acting forces can be found.

But Darwinian Evolution, being a natural process, is itself subject to the

principle of least action.