All Questions
3 questions
7
votes
3
answers
911
views
Does the equation $x^2+x=a$ have an integer solution?
I am writing a paper on the topological structure of the Golomb space (defined here) and arrived to the following question:
Question 1. Is it true that for a number $a\in\mathbb N$ the equation $x^2+...
2
votes
1
answer
600
views
Density of rational points over finite fields, an estimate of Lang-Weil constant
Let $X\hookrightarrow\mathbb P^n_{\mathbb F_q}$ be a geometrically integral hypersurface over the finite field $\mathbb F_q$ of degree $\delta$. In order to estimate the number of its rational points, ...
2
votes
0
answers
87
views
Variation of Gauss/Jacobi sums on a variety
Let $V \subset \mathbb P^n$ be a nice (smooth, projective?) variety over a finite field $\mathbb F_q$. Let $\chi_0,\chi_1,\dots,\chi_{n}: \mathbb F_q^\times \to \mathbb Q(\mu_{q-1})$ be multiplicative ...