Unified field theory of (the not mathematically well-defined) quantum electrodynamics. One can extend this system to include the weak and strong nuclear forces to get the Einstein–Yang–Mills–Dirac System. The French physicist Marie-Antoinette Tonnelat published a paper in the early 1940s on the standard commutation relations for the quantized spin-2 field. She continued this work in collaboration with Erwin Schrödinger after World War II. In the 1960s Mendel Sachs proposed a generally covariant field theory that did not require recourse to renormalisation or perturbation theory. In 1965, Tonnelat published a book on the state of research on unified field theories. In 1963 American physicist
Unified neutral theory of biodiversity not straight, but the slope changes from being steep at small areas, shallower at intermediate areas, and steep at the largest areas. The formula for species composition may be used to calculate the expected number of species present in a community under the assumptions of the Unified Theory. In symbols where θ is the fundamental biodiversity number. This formula specifies the expected number of species sampled in a community of size "J". The last term, formula_63, is the expected number of "new" species encountered when adding one new individual to the community. This is an increasing function of θ and