Natural Such a function represents a partial function on naturals, in which the proof of even (n) can be found like a precondition. From the Cambridge English Corpus There isn't a actual difference between the usual initial-order objects in the mathematical discourse - for example naturals, sets and so forth https://vegetarianayurvedicremedies.video.blog/2025/09/03/herbal-medicines-online-cureayu-non-prescription-remedies/