%0 Journal Article %T The Significance of an Unnoticed Theoretical Element %A Eliahu Comay %J Open Access Library Journal %V 7 %N 4 %P 1-9 %@ 2333-9721 %D 2020 %I Open Access Library %R 10.4236/oalib.1106262 %X Relativistic properties of a Lagrangian density are compared with those of a Hamiltonian density. It is proved that a Lagrangian density and a Hamiltonian density undergo different Lorentz transformations. This outcome is a theoretical element that has been unnoticed for a very long time. It is also proved that this theoretical element plays a crucial role in the structure of weak interactions theory. In particular, it is shown that the theory that uses this element is overwhelmingly superior over the Standard Model electroweak theory. %K Lagrangian Density %K Hamiltonian Density %K Lorentz Transformations %K Weak Interactions %U http://www.oalib.com/paper/5430075