A Geometric Framework for the Subfield Problem of Generic Polynomials via Tschirnhausen Transformation
نویسندگان
چکیده
Let k be an arbitrary field. We study a general method to solve the subfield problem of generic polynomials for the symmetric groups over k via Tschirnhausen transformation. Based on the general result in the former part, we give an explicit solution to the field isomorphism problem and the subfield problem of cubic generic polynomials for S3 and C3 over k. As an application of the cubic case, we also give several sextic generic polynomials over k.
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