The introduction of dynamics for the simple system of A reversibly reacting to B requires nine variables for definition, which is more than double the four parameters required to define the static catalytic reaction (two adsorption enthalpies, one activation energy, and overall reaction enthalpy). As depicted in Figure , as the complexity of catalytic systems expands by the number of catalytic surface reactions, the number of parameters required to define the oscillating systems significantly expands. Dynamic systems require at least 2n + 1 parameters to define all energetic states, where n is the number of parameters required to define the static catalytic reaction. If the scaling relationships to predict changes in the transition state energy or the relative binding energies of surface intermediates become nonlinear, then the number of parameters further expands accordingly.