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4 votes
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Shortest interval over which there are more quadratic residues than nonresidues

Hi, I refer to formula (8) in Chapter 1 of H. Davenport, Multiplicative Number Theory, Third Edition, Springer (2000), which says that for primes $q\equiv 3 \bmod 4$: $$ L\left(\left(\frac{\cdot}{q}\ …
Timothy Foo's user avatar
  • 1,075
4 votes

Irreducibility of polynomials related to quadratic residues

Hi, In Remark 2 of "Zeros of Fekete Polynomials", (http://arxiv.org/PS_cache/math/pdf/9906/9906214v1.pdf), Conrey et. al. give $$\sup_{|z|=1}|f(z)| \ll p^{0.5} \log p.$$ But the Mahler measure of $f …
Timothy Foo's user avatar
  • 1,075
1 vote

Irreducibility of polynomials related to quadratic residues

Regarding the Galois group of the factor $g(x)=g(q,x)$of these Fekete polynomials that is conjectured to be irreducible, here is PARI code that counts, for each prime $q \equiv 1 \bmod 4$, $17 \leq q …