axiomatic formulation of quantum mechanics as explained by one of the greatest pure and applied mathematicians in modern history. In this book all the modern mathematical machinery to deal with quantum theories, such as the general notion of Hilbert space, that of self-adjoint operator and a complete general version of the spectral theory for self-adjoint unbounded operators, was introduced for the first time. Feynman, R P (1942). "The Principle of Least Action in Quantum Mechanics". Ph.D. Dissertation, Princeton University. Reprinted as Laurie M. Brown ed., (with title Feynman's Thesis: a New Approach to Quantum Theory). World Scientific, 2005. . The earliest record of the (complete) path integral formalism, a Lagrangian formulation of quantum mechanics, anticipated by ideas from Dirac, via the Wiener integral. Quantum field theory Klein and Gordon papers: The publications formulate what became known as the Klein–Gordon equation as the first relativistically invariant Schrödinger equation (however the equation was considered contemporaneously by Schrödinger - in his personal notes - and Fock, among others). Dirac equation: In these papers, Dirac formulates and derives the Dirac equation, which won him a Nobel Prize (1933) in Physics. Introduction of the Feynman diagrams approach to quantum electrodynamics. Extended the concept of gauge theory for abelian groups, e.g. quantum electrodynamics, to nonabelian groups to provide an explanation for strong interactions by use of what are now known as the Yang–Mills equations. Electroweak unification papers: Combined the electromagnetic and weak interactions (through the use of the Higgs mechanism) into an electro-weak theory, and won the trio the Nobel Physics Prize (1979). Also seen as a step towards the Standard Model of particle physics. Higgs et al. 1964 papers: Collectively these three papers (called the 1964 PRL symmetry breaking papers) formulated the concept of the Higgs mechanism. Also important later work done by t'Hooft. Gross, Wilczek & Politzer 1973 papers: Won the three researchers the Nobel Physics (2004) prize for the prediction of asymptotic freedom. Standard graduate textbook in quantum field theory. Relativity Special The primary sources section of the latter article in particular contains many additional (early) publications of importance in the field. For a translation see: https://en.wikisource.org/wiki/Translation:The_Relative_Motion_of_the_Earth_and_the_Aether. Hendrik Lorentz was a major influence on Einstein's theory of special relativity. Lorentz laid the fundamentals for the work by Einstein and the theory was originally called the Lorentz-Einstein theory. After 1905 Lorentz wrote several papers on what he called "Einstein's principle of relativity". "On the