Natural Such a operate signifies a partial purpose on naturals, the place the evidence of even (n) can be noticed like a precondition. From the Cambridge English Corpus There isn't any authentic distinction between the standard initially-order objects on the mathematical discourse - including naturals, sets and so forth - https://buyherbalmedicines.health.blog/2025/08/18/best-ayurvedic-brand-in-india-discover-cureayu-health-products/