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Wolf summation is a mathematical concept related to summation techniques used in analysis, particularly in the context of probability and statistical mechanics. It often pertains to the summation of infinite series or sequences, particularly in areas where traditional summation methods may not converge or may not provide useful information. The term may also appear in discussions around series acceleration techniques or in the theory of series that involve oscillatory or divergent behavior.

The Ziff–Gulari–Barshad (ZGB) model is a theoretical framework used to study surface phenomena, particularly in catalysis and reaction-diffusion processes on surfaces. Proposed in the 1980s by Robert M. Ziff, Steven Gulari, and Robert A. Barshad, the model specifically addresses the dynamics of chemical reactions occurring on a two-dimensional lattice representing a solid surface.