Help pleaseĦĦĦ 1.-Prove that each subfield of the field of complex numbers contains every rational number. 2.-Prove that each field of characteristic zero contains a copy of the rational number field. Thanks
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1: Let be a field. 2:let be a field, be its identity. Let to be are distinct from each other since if then , which will contradict to it is easy to show that is a subfield of and is a isomorphism.
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