Natural Such a functionality represents a partial functionality on naturals, in which the evidence of even (n) can be noticed being a precondition. From the Cambridge English Corpus There's no true difference between the usual initially-order objects on the mathematical discourse - such as naturals, sets and so forth - https://ayurvedicmedicineforlifestyle.law.blog/2025/09/03/ayurvedic-medicine-for-lifestyle-disorders-cureayu-solutions/