Zur konstruktion von energiehyperflächen

An analytical approximation for the hypersurface ℰ ( pr ‐approximation) is given using the two‐ and three‐center‐functions p λμ and r   μν λ , which is valid for any number N of atoms and is invariant with respect to the number of centers in its analytical structure (rule of construction). This is valid too if N is reduced either by the association of atoms or by transitions to infinity. p λμ can be fixed by two‐center‐systems. But r   μν λis still free except for the fulfilling of some simple requirements. The rule of construction proposed for ℰ is an example for using so‐called analytical computers.