Full Galois groups of polynomials with slowly growing coefficients
arxiv(2024)
摘要
Choose a polynomial f uniformly at random from the set of all monic
polynomials of degree n with integer coefficients in the box [-L,L]^n. The
main result of the paper asserts that if L=L(n) grows to infinity, then the
Galois group of f is the full symmetric group, asymptotically almost surely,
as n→∞.
When L grows rapidly to infinity, say L>n^7, this theorem follows from a
result of Gallagher. When L is bounded, the analog of the theorem is open,
while the state-of-the-art is that the Galois group is large in the sense that
it contains the alternating group (if L< 17, it is conditional on the general
Riemann hypothesis). Hence the most interesting case of the theorem is when L
grows slowly to infinity.
Our method works for more general independent coefficients.
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