 To give an illustration of how \(\lambda\) is used in this setting, let us inspect the grammar of a typical application (McMichael and Zalta, 1980). One typically has a predication operator (or, more precisely, a family of predication operators) \(p_k (k \ge 0)\). In a language where we have terms \(\mary\) and \(\john\) and a binary relation loves, we can formally express: