Question

State whether 2z is a field or not.​

Answer 1

Answer:

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Step-by-step explanation:

The set of even integers 2Z forms a commutative ring under the usual operations of addition and multiplication. However, 2Z does not have a 1, and hence cannot be a division ring nor a field nor an integral domain. ... So, R[x] is never a division ring nor a field.

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