I do not think you can do anything with primes whose square divides ... (sci.math)Re: commutative rings such that all elements except 1 are zero divisors... a ring, all algebraic elements, are idempotent. ... > 1 are zero divisors, but not every element is idempotent? ... > it is automatic that an embedding R -> R' takes idempotents to ... (sci.math)A commutative non-Boolean ring such that all eleme