“Hugh Everett's relative-state formulation of quantum mechanics is an attempt to solve the quantum measurement problem by dropping the collapse dynamics from the standard von Neumann-Dirac formulation of quantum mechanics.

The famous special-relativity equation that Einstein's theory introduced was that of e = m c 2 . In the formula, e stands for "energy," m stands for "mass," and c stands for "the speed of light." The consequences of the formula are many. First, one can conclude that energy and mass are proportional.

These are the wavefunction, matrix, path integral, phase space, density matrix, second quantization, variational, pilot wave, and Hamilton–Jacobi formulations.

In physics, relativistic quantum mechanics (RQM) is any Poincaré covariant formulation of quantum mechanics (QM). This theory is applicable to massive particles propagating at all velocities up to those comparable to the speed of light c, and can accommodate massless particles.