In other words, if a contradiction can be proved in Peano arithmetic, then set concept can be logically inconsistent. With this particular definition, specified a natural variety n, the sentence "a set S has n elements" may be formally defined as "there exists a bijection from n to S. acquire, https://topayurvedicbrandsindia.fashion.blog/2025/09/03/natural-health-products-in-india-trusted-cureayu-solutions/