Incompatible element: definition

It may not at first be obvious that the Jahn-Teller theorem applies to transition states (40). The proof rests on the fact that the matrix element of the distortion gives a first-order change in energy and hence is linear in Q. In other words there must be a non-zero slope in some direction and this is incompatible with the definition of a transition point as a saddle point on the potential energy surface. 

Algorithm of integrated risk assessment, realised as an element of integrated operational control, includes description of incompatibilities, probability of their causes and significance of their effects, the real risk assessment using the Integrated Risk Ratio and definition of the key incompatibilities creating the main risk value. 

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