  Everett's Relative State Interpretation (aka Many Worlds Interpretation) has
gained increasing interest due to the progress understanding the role of
decoherence. In order to fulfill its promise as an intellectually economic
realistic description of the physical world, two postulates are formulated. In
short they are 1) for a system with continuous coordinates $\mathbf x$,
discrete variable $j$, and state $\psi_j(\mathbf x)$, the density
$\rho_j(x)=|\psi_j(x)|^2$ gives the distribution of the location of the system
with the respect to the variables $x$ and $j$; 2) an equation of motion for the
state $i\hbar \partial_t \psi = H\psi$. The contents of the standard
(Copenhagen) postulates are derived including the quantum probabilities (Born's
rule).
