In the following solution to ex21 (iii) I do not understand the second last line. Is there a mistake?
The first summation implies the degree of $f$ is $n$ whereas the second summation implies the degree of $f$ is $np$?
2026-03-25 11:54:04.1774439644
Fields of prime characteristic in which an irreducible polynomial has a root of multiplicity > 1
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