Sorry for so many questions. This is the second-to-last problem in the last homework.(adsbygoogle = window.adsbygoogle || []).push({});

I don't think I even understand the question. I know what a group isomorphism is. How does it relate to the field of quotients of ring E of all even integers. How do I show F is isomorphic to the field of rational numbers? What's the mapping from E to the rationals?

http://i111.photobucket.com/albums/n149/camarolt4z28/IMG_20110806_121111.jpg?t=1312651137 [Broken]

http://i111.photobucket.com/albums/n149/camarolt4z28/IMG_20110806_121121.jpg?t=1312651148 [Broken]

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# Homework Help: Prove F isomorphic to the field of rational numbers

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