I need to prove that this two rings are isomorphic.

b) what are the element of ?

Thank YOU

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- July 9th 2013, 09:26 AMjohn27Prove that A[X1,,,Xn] isomorphic with A[X1,,,Xn-1][Xn]
I need to prove that this two rings are isomorphic.

b) what are the element of ?

Thank YOU - July 9th 2013, 01:09 PMemakarovRe: Prove that A[X1,,,Xn] isomorphic with A[X1,,,Xn-1][Xn]
Is this about polynomials? Then consists of polynomials of whose coefficients are polynomials of . It is clear that ultimately such thing is a polynomial of .

- July 9th 2013, 02:56 PMjohn27Re: Prove that A[X1,,,Xn] isomorphic with A[X1,,,Xn-1][Xn]
Yes they are RINGS POLYNOMIALS.

- July 10th 2013, 10:21 AMjohn27Re: Prove that A[X1,,,Xn] isomorphic with A[X1,,,Xn-1][Xn]
what are the element of A[X1,,Xn-1][Xn] ?