Prove that the ring of integers ≺ Zp,⊕,⊙ ≻ can be embedded in every integral domain          D = ≺ D, +, · ≻ of prime ring characteristic p ∈ P.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Prove that the ring of integers ≺ Zp,⊕,⊙ ≻ can be embedded in every integral domain          D = ≺ D, +, · ≻ of prime ring characteristic p ∈ P.

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Step 1

Given that p,, is a ring of integers. Also D=D,+,· is an integral domain of prime characteristics p.

We know that a ring R,+,· is embedded into a ring R',+',·', if there is a subring S,+',·' of R',+',·' such that  R,+,·S,+',·'.

Since p=0,1,2,,p-1, therefore p,, is a ring with integer addition and multiplication modulo p.

Since D=D,+,· is an integral domain of prime characteristic  p, therefore p is the least positive integer such that  e+e++ep times=0d, where e is multiplicative identity element of D=D,+,· and 0d is an additive identity of D.

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