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Prime numbers, diophantine equations, diophantine approximations, analytic or algebraic number theory, arithmetic geometry, Galois theory, transcendental number theory, continued fractions

3 votes
1 answer
519 views

Prime number theorem via the explicit formula

Can the prime number theorem be obtained from the explicit formula, $\psi(x)=x-\sum_{\zeta(\rho)=0}\frac{x^\rho}{\rho}+O(1)$? Here, $\psi(x)=\sum_{k=1}^\infty\sum_{p^k<x}\log p$
Mustafa Said's user avatar
  • 3,699
5 votes
2 answers
1k views

Density of fake zeros of Zeta

I am investigating whether or not there exist $\epsilon > 0$ such that $\zeta(s) \neq 0$ on the strip $1-\epsilon < \Re(s) \leq 1$. Suppose not. Then given $\delta > 0$ there exists a zero of zeta $\ …
Mustafa Said's user avatar
  • 3,699
1 vote

Teaching prime number theorem in a complex analysis class for physicists

You can start by defining the Riemann Zeta function as $\zeta(s) = \sum_{n=1}^\infty \frac{1}{n^s}$ for $s$ real and then prove the Euler product formula, $\zeta(s) = \prod_{p} \frac{1}{1-p^{-s}}$ for …
Mustafa Said's user avatar
  • 3,699
0 votes
2 answers
185 views

Convergence of Riemann's Product representation of Xi

During his investigation of zeta Riemann defined the $\xi$ function as $\xi(s):= \Gamma(\frac{s}{2})(s-1)\pi^{-s/2}\zeta(s)$ which is an entire function that is invariant under the substitution $s \to …
Mustafa Said's user avatar
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3 votes
0 answers
249 views

What was the first result that belongs to the field of analytic number theory?

Euclid proved that there are infinitely many primes via a clever algebraic argument that most of us are familiar with. Euler proved that $\lim_{s \to 1^+} \sum_p \frac{1}{p^s} = +\infty$ which gives …
Mustafa Said's user avatar
  • 3,699
29 votes
1 answer
2k views

Riemann's attempts to prove RH

I read somewhere that Riemann believed he could find a representation of the zeta function that would allow him to show that all the non-trivial zeros of the zeta function lie on the critical line. I …
Mustafa Said's user avatar
  • 3,699
35 votes
7 answers
6k views

Heuristic argument for the Riemann Hypothesis

Is there a heuristic argument that supports the validity of the Riemann hypothesis or are we just relying on numerical evidence? Moreover, what is the strongest theorem that supports the validity of …
Mustafa Said's user avatar
  • 3,699
7 votes
0 answers
1k views

A problem of Erdős on convergence of $\sum (-1)^nn/p_n$ and equidistribution of $\pi(n)$ mod...

Erdős asked1 whether the series $$\sum_{n=1}^\infty \frac{(-1)^n n}{p_n}$$ converges. Here, $p_n$ denotes the n-th prime. I can show that this series converges simultaneously with the series $\sum_{ …
Mustafa Said's user avatar
  • 3,699
4 votes
2 answers
929 views

Heuristics behind the Circle problem?

Is there a heuristic argument behind the exponent in the circle problem? The problem that I am referring to is the following: Consider a circle of radius $R$ centered at the origin in the plane and …
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  • 3,699
12 votes
2 answers
2k views

What are the implications of a zero of zeta off the critical line

So what happens if there is a non-trivial zero of the Riemann zeta function off the critical line? Has there been any work in the following direction: We know from Landaus theorem that there is a po …
Mustafa Said's user avatar
  • 3,699
6 votes

What is a sieve and why are sieves useful?

The goal of sieve theory is to obtain upper and lower bounds on the cardinality of sets of the form $$S(A, \mathcal{P}, t) = \{ n \in A : \forall p \in \mathcal{P}\ (p|n \to p>t) \}$$ where $A$ is a …
Mustafa Said's user avatar
  • 3,699
13 votes
1 answer
892 views

Parity of the Prime Counting Function

I am interested in the distribution of the parity of $\pi(x)$, the prime counting function, over the natural numbers. Let: $\ \ E_n := \left\{ k \in \left\{1,\dots,n\right\} : \pi(k) \equiv 0 \mod 2 …
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0 votes

prime zeta function when $0<s<1$

This estimate is probably very crude, but here we have that $\sum_{p \leq x} \frac{1}{p^s} \leq \pi(x)\frac{1}{2^s}$.
Mustafa Said's user avatar
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19 votes
4 answers
2k views

What are the obstructions to showing that $\zeta$ doesn't vanish on the strip $1- \varepsilo...

Most (if not all) of the proofs of the Prime Number Theorem that I have seen in the literature rely on the fact that the Riemann zeta function, $\zeta(s)$, does not vanish on the line ${\rm Re}(s) = 1 …
Mustafa Said's user avatar
  • 3,699
18 votes
2 answers
5k views

How did Riemann calculate the first few non-trivial zeros of the zeta-function?

Does anyone know how Riemann calculated the first few non-trivial zeros of the Zeta function? I am wondering if he approximated the integral, $\frac{1}{2 \pi i} \int_{R} \frac{{\xi}^\prime(z)}{\xi (z …
Mustafa Said's user avatar
  • 3,699

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