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2d
reviewed Close Advice on dealing with the gap
2d
comment Advice on dealing with the gap
AA should ask their advisor for advice -- that's what advisors are for!
Feb
8
reviewed No Action Needed Grothendieck, A Place to Begin
Feb
8
reviewed Reviewed calculus integral with logs
Feb
7
comment If the natural density (relative to the primes) exists, then the Dirichlet density also exists, and the two are equal
This follows just by partial summation, and would have been known to everyone. For example, how did Chebyshev know that the limit in the prime number theorem, if it exists, must be one?
Feb
6
reviewed Close Algebra math word problem to be solved using elimination or substitution method
Feb
6
reviewed Leave Open Greatly expanded new edition of a Bourbaki chapter on algebra?
Feb
5
comment Asymptotics of product of Euler's totient function (A001088)?
Yes and it equals $\frac{1}{e}\prod_p (1-1/p)^{1/p} $.
Feb
4
reviewed Leave Open Does the sum $\sum_{n=1}^{\infty}\frac{1}{p_n(p_{n+1}-p_n)}$ converge?
Feb
2
comment natural radical and an algebraic expression in $\pi$ and/or $e$
I didn't really have anything to add to that one line. By all means include it in the question. (Ok here's one more line to go with my comment: the same constant also appeared in an old asymptotic formula of Bateman to count the number of integers $n$ for which $\phi(n)\le x$. This is why I recognized the Euler product at once, but it is just a coincidence.)
Feb
1
reviewed Close Hypothesis testing for independent and non-identical distribution
Jan
30
comment natural radical and an algebraic expression in $\pi$ and/or $e$
$\zeta(2)\zeta(3)/\zeta(6)$.
Jan
28
revised Upper bound on answer for Pell equation
added 678 characters in body
Jan
28
awarded  Nice Answer
Jan
28
revised Upper bound on answer for Pell equation
added 1124 characters in body
Jan
27
comment Upper bound on answer for Pell equation
You only get from this a bound of $\exp(p^{1/2+\epsilon})$. Please see argument in my answer below.
Jan
27
answered Upper bound on answer for Pell equation
Jan
27
reviewed Reviewed Binomial Expansion for non-commutative setting
Jan
27
reviewed No Action Needed Pointwise convergence of Fourier series, Fefferman's article
Jan
25
reviewed Leave Open Polynomial factoring over finite fields