Application of Deans Negative Eigenvalue Theorem to Aperiodic Polymers

Application of Dean s Negative Eigenvalue Theorem to Aperiodic Polymers.—The 

Assuming that some other convenient factorization is found in the form 

The representation of a polymer unit by one orbital is, of course, a rather crude approximation but calculations of this type49-50 may still throw light on the qualitative effects of aperiodicity. There seems to be, however, no difficulty in applying Dean s method in a more sophisticated way, namely substituting the matrix elements a and bt by Fock matrix blocks which could be taken from appropriate cluster calculations.51 

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