12
Is $i\notin \mathbb{Q}(\zeta_p)$ for all odd primes $p$?
math.stackexchange.com
12
Approximate my atomic weight
codegolf.stackexchange.com
12
Can a closed interval be an open set in a topological space?
math.stackexchange.com
12
Is every Wolstenholme number greater than or equal to its index?
math.stackexchange.com
12
Is one spelling mistake in the academic CV a big deal?
academia.stackexchange.com
12
A reinterpretation of the $abc$ - conjecture in terms of metric spaces?
mathoverflow.net
12
How to obtain an upper bound for $\prod_{p\mid N} (1 + 1/\sqrt{p})$ where $N$ is square free?
mathoverflow.net
12
Probability that two random integers have only one prime factor in common
math.stackexchange.com
12
Generate a Padovan Spiral
codegolf.stackexchange.com
12
Convergence of "alternating" harmonic series where sign is +, --, +++, ----, etc.
math.stackexchange.com
12
Generate a modulo rosace
codegolf.stackexchange.com
12
Even sharper upper bound for prime product?
mathoverflow.net
11
If $a$ and $b$ are two roots of $x^4 + x^3 - 1 = 0$ prove that $ab$ is a root of $x^6 + x^4 + x^3 - x^2 - 1$.
math.stackexchange.com
11
Island Golf #1: Circumnavigation
codegolf.stackexchange.com
11
The forbidden built-in
codegolf.stackexchange.com
11
Moments of merit
mathoverflow.net
11
For a complex number on the unit circle with irrational argument z, does $z^{N!}$ ever converge?
math.stackexchange.com
11
Determinant identity: $\det M \det N = \det M_{ii} \det M_{jj} - \det M_{ij}\det M_{ji}$
math.stackexchange.com
11
Determine whether a number is 2017-friable without primes in your source code
codegolf.stackexchange.com
11
Rate of convergence of the prime zeta function P(2)
mathoverflow.net
11
$\sum_{i=1}^x\sum_{j=1}^xf(i\cdot j)$ Double Summing a (Not Completely) Multiplicative Function
mathoverflow.net
11
What is an example of an application of a higher order derivative ($y^{(n)}$, $n\geq 4$)?
math.stackexchange.com
11
How to solve this equation:$\sqrt{x-\sqrt{x-\sqrt{x-\sqrt{x-5}}}}=5$
math.stackexchange.com
11
Examples of polynomial injections $f:\mathbb{N}\times \mathbb{N}\to \mathbb{N}$
math.stackexchange.com
11
iHateOddNumbers
codegolf.stackexchange.com
11
Powers of π equal to fraction
math.stackexchange.com
11
Repeatedly taking mean values of non-empty subsets of a set: $2,\,3,\,5,\,15,\,875,\,...$
math.stackexchange.com
11
Is there a reason why the Maclaurin coefficients of the Riemann zeta function are asymptotically close to -1?
math.stackexchange.com
10
Ordinary Generating Function for Mobius
mathoverflow.net
10
How long should one wait for a report before asking about its status?
mathoverflow.net
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