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Results tagged with primitive-roots
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user 17907
For questions related to primitive roots, the generators of the multiplicative group of integers modulo n.
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Does the expression $x^4 +y^4$ take on all values in $\mathbb{Z}/p\mathbb{Z}$?
emtom has found the right reference, but there is a more explicit result in that book (Ireland and Rosen, A Classical Introduction to Modern Number Theory). In fact, Theorem 5 of Chapter 8 (on page 10 …
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