Natural Such a functionality signifies a partial function on naturals, where the proof of even (n) may very well be observed like a precondition. With the Cambridge English Corpus There's no real difference between the standard first-order objects in the mathematical discourse - for example naturals, sets and so forth https://madhumehharcapsule.blogspot.com/2025/09/ayurvedic-natural-remedies-for-energy.html