Many built-in mathematical and logical operators, functions, and constants can be used to specify parameters, variables, equation coefficients, and material properties. These tables list the unary and binary operators (Table 5-1 and Table 5-2), special operators (Table 5-8), mathematical functions and constants (Table 5-6), and physical constants predefined as variables (Table 5-7) that are available in COMSOL Multiphysics. See also Component Couplings and Coupling Operators for information about coupling operators.