Integral Domain

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An 'Integral Domain', often just called domain, is a commutative ring \(R \), with \(1\neq 0 \) and has no zero divisors.

Any unital subring of an integral domain is an integral domain.

An ideal is prime if and only if \(R/I \) is an integral domain.

Every field is an domain.

If \(R \) is a domain, \(S \) is a ring and \( f : R \to S\) is a ring homomorphism, then \(\text{Ker}(f)\) is a prime ideal.