Category: News

Is Zn an integral domain?

Zn is a ring, which is an integral domain (and therefore a field, since Zn is finite) if and only if n is prime. For if n = rs then rs = 0 in Zn; if n is ...

Who earns more doctor or IAS?

If both are honestly working in government job then salary wise IAS is better placed as promotions are faster for him. However, if doctors don't take...