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On the blending of real/complex analysis with number theory. The study involves distribution of prime numbers and other problems and helps giving asymptotic estimates to these.

5 votes

More accurate formula for the Chebyshev $\psi$ function

The original result is due to Goldston "On a result of Littlewood concerning prime numbers. II". This result has recently been made explicit, see (https://arxiv.org/abs/2107.14468v1). Ramaré also has …
Daniel Johnston's user avatar
5 votes
Accepted

Conjectured error term when counting square-free integers

Your guess is correct! It is indeed conjectured that $a=1/4$. A good recent reference is [1]. In particular, it is known that $$E(x)=\Omega(x^{1/4})$$ and computations have shown $$|E(x)|<1.12543x^{1/ …
Daniel Johnston's user avatar
4 votes

The twin prime problem and the Jurkat-Richert Theorem

As discussed in Stanley's answer, the main overarching reason why we cannot prove the Twin Prime conjecture (or Goldbach's conjecture) is the parity problem. However, in terms of the specific lower bo …
Daniel Johnston's user avatar
4 votes
Accepted

Weights in the proof of Chen's theorem in Nathanson's "Additive Number Theory The Classical ...

Choosing optimal weights in sieve theory is a very difficult problem that is often done by trial and error. In Nathanson's book it seems as if he was attempting to produce the simplest and shortest ve …
Daniel Johnston's user avatar
3 votes

A question regarding Cramér's proof on prime gaps under the Riemann Hypothesis

I wanted to give some additional remarks to Will Sawin's answer and the associated comments. Carneiro, Milinovich, and Soundararajan certainly have the best result in literature (as far as I'm aware). …
Daniel Johnston's user avatar
3 votes

Bounds of zeta function near $\Re(s)=1$

In addition to GH from MO's answer, if one wishes to keep the $(\log|\Im(s)|)^{2/3}$ factor, then there is a very recent improvement due to Bellotti [1]. In particular, Bellotti proved that $$ \zeta(s …
Daniel Johnston's user avatar
2 votes

Riemann–Von Mangoldt formula

In addition to 2734364041's answer, this paper of Tim Trudgian may be useful: in particular, Trudgian shows that for all $T\geq e$, $$\left|N(T)-\frac{T}{2\pi}\log\left(\frac{T}{2\pi e}\right)-\frac{7 …
Daniel Johnston's user avatar