Linked Questions
12 questions linked to/from About Goldbach's conjecture
2
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1
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828
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Does asymptotic Goldbach imply GRH?
It seems to me that a proof of $\alpha_{n}=o(n)$ where the quantity $\alpha_{n}$ is defined in About Goldbach's conjecture together with the main result of https://kyushu-u.pure.elsevier.com/en/...
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2
votes
1
answer
320
views
Robin's criterion, Goldbach's conjecture and upper bound for $r_{0}(n)$
This question is a follow-up to both About Goldbach's conjecture and Question in Proof of Hardy Ramanujan theorem about $\omega(n) =\sum_{p|n} 1$.
Can one derive from Robin's criterion for RH an ...
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2
votes
1
answer
1k
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About Extended Goldbach's conjecture
Hello,
This question is a follow-up from About Goldbach's conjecture.
As $N_{2}(n)=\sum_{r\leq n}1_{\mathbb{P}}(n-r)1_{\mathbb{P}}(n+r)$, Chebotarev's theorem allows to write:
$$\dfrac{N_{2}(...
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-3
votes
1
answer
308
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Is this Goldbach conjecture related quantity equal to the number of Goldbach decompositions up to a bounded quantity?
This question is a follow-up to About Goldbach's conjecture and as such deals with the notion of primality radius of a composite integer $n$, that is, a positive integer $r$ such that both $n-r$ ...
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3
votes
1
answer
254
views
If there are two primes at an even distance $k$ is there another disjoint pair of primes also at distance $k$?
Suppose $p,q$ are two primes at even distance $k$. Must there necessarily exist a different pair $p',q'$ composed of entirely different numbers such that $p'$ and $q'$ are also at distance $k$?
Edit: ...
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-1
votes
1
answer
726
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A possible consequence of Dirichlet's theorem about primes in arithmetic progression
EDIT : I copy-paste the beginning of a previous question since Gerry Myerson suggested this question should be self-contained.
"let's consider a composite natural number $n$ greater or equal to $4$. ...
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5
votes
0
answers
781
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Would the following conjectures imply Cramer's conjecture?
Assume Goldbach's conjecture. Then for every $n\ge 2$ there exists at least one non-negative integer $r\le n-2$ such that both $n+r$ and $n-r$ are primes. Let's write $r_{0}(n):=\inf\{r\le n-2, (n-r,n+...
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6
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0
answers
472
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Average value of $\prod_{p|d}{p-1\over p-2}$ for $d=nq$, $n\in{\mathbb N}$, with $p$ odd prime
$\newcommand{\mean}{\mathop{\mathrm{mean}}}$
Define
$$
S(d) = \prod_{p|d\atop p>2}{p-1\over p-2}.
$$
Bombieri and Davenport (1966) proved that
$$
\mean\limits_{d\in{\mathbb N}} S(d) =
\mean\...
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2
votes
0
answers
268
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Lower bounding the number of Galois radii of an integer
Recall that I call $r>0$ a Galois radius of an integer $n$ if $n-r=p^a$ and $n+r=q^b$ with $p$ and $q$ primes and positive $a$ and $b$ and a primality radius of $n$ if $a=b=1$.
Does it suffice to ...
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0
votes
0
answers
255
views
Is RH equivalent to the following estimate?
This question is a follow up from About Goldbach's conjecture and comes from what I read about the Farey series related criterion for RH.
Let $r_{k}(n)$ be the $k+1$-th potential typical primality ...
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1
vote
0
answers
239
views
Which upper bound for $r_{0}(n)$ can be obtained through the Chinese Remainder theorem?
Assume Goldbach's conjecture. Then for every integer $n$ greater than one there exists a non negative integer $r$ such that both $n-r$ and $n+r$ are prime numbers. For a given $n$, let's denote $r_{0}(...
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1
vote
0
answers
128
views
Upper bound for $\alpha_{n}$ from Mertens' third theorem
This question is a follow-up to About Goldbach's conjecture.
I would like to know if an unconditional upper bound for $\alpha_{n}$, defined as $n(N_{2}(n)-\dfrac{nN_{1}(n)}{P(n)})$ (where $N_{2}(...
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