Natural This kind of operate represents a partial perform on naturals, where by the proof of even (n) could possibly be viewed as being a precondition. From your Cambridge English Corpus There is not any true difference between the usual initial-order objects in the mathematical discourse - including naturals, sets https://safeherbalsupplements.tech.blog/2025/09/03/cureayu-vegetarian-ayurvedic-remedies-for-everyday-health/