i cant grasp these concepts, 1-to-1 and onto have always annoyed me.(adsbygoogle = window.adsbygoogle || []).push({});

here's 1 question, (i dont know how to post symbols so Beta ..)

(C is Complex numbers)

Let Beta:<C,+> -> <C,+> by Beta(a+bi)=a-bi (that is, the image is a +(-b)i).

Prove Beta is an isomorphism of groups.

i have alot of these problems but maybe a one may help me understand the rest

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# Prove Beta is an isomorphism of groups

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