User Jan-Christoph Schlage-Puchta

7 votes

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Is there a left-orderable profinite group?

answered Dec 16, 2014 at 19:38

7 votes

Consequences of the Inverse Galois Problem

answered Mar 25, 2015 at 16:00

7 votes

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How many integers divide a number that involves just three non-zero digits?

answered Aug 12, 2014 at 12:22

6 votes

Quadratic residues and nonresidues of arbitrary patterns

answered Oct 29, 2013 at 12:47

6 votes

Not especially famous, long-open problems which anyone can understand

answered Dec 17, 2014 at 15:59

6 votes

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Upper bound for number of prime numbers in a range

answered Jul 4, 2015 at 17:54

6 votes

Equality of Euclidean numbers / constructible numbers

answered Jul 14, 2015 at 20:22

6 votes

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Prime factors of the members of a certain recurrence

answered Oct 13, 2014 at 8:12

6 votes

expressing permutations in terms of generators

answered Oct 21, 2016 at 10:05

6 votes

What is the relationship between the abscissa of holomorphy and abscissa of convergence of a Dirichlet series

answered Jan 11, 2017 at 9:59

5 votes

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Is there any research on how many pairs of prime numbers exist that they describe an even number via Goldbach's Conjecture?

answered Jan 14, 2017 at 15:41

5 votes

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Can there be more than two zeta zeros in between a Gram point and a França-LeClair point?

answered Jan 14, 2017 at 18:13

5 votes

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Is the affine group generically 2-generated?

answered Nov 4, 2016 at 12:39

5 votes

Extending the discussion on "super Catalan" numbers

answered Sep 24, 2016 at 8:58

5 votes

Very particular limsup of an integral

answered Sep 29, 2016 at 11:12

5 votes

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Unknown bias in a distribution related to prime numbers

answered Aug 25, 2016 at 15:57

5 votes

Demystifying complex numbers

answered Mar 16, 2019 at 9:24

5 votes

Analogues of the Riemann zeta function that are more computationally tractable?

answered Sep 8, 2018 at 13:48

5 votes

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Counting prime points in a bounded region

answered Feb 16, 2017 at 18:06

5 votes

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Specializing non-trivial primality tests

answered Nov 4, 2017 at 22:17

5 votes

What exactly is wrong with this statement (Lucas-Penrose fallacy)?

answered May 27, 2015 at 10:45

5 votes

representations of $S_k \times S_j$

answered Apr 22, 2016 at 9:22

4 votes

List of proofs where existence through probabilistic method has not been constructivised

answered Dec 27, 2015 at 15:24

4 votes

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Upper bound on level of a congruence subgroup of the modular group

answered Nov 22, 2015 at 12:57

4 votes

Is there a nonabelian free group inside a group of positive rank gradient?

answered Sep 3, 2015 at 19:46

4 votes

How to prove that this equation has only one solution?

answered Jun 25, 2015 at 11:16

4 votes

The density of numbers of the form $p + 2^k$

answered Nov 5, 2013 at 17:05

4 votes

Sum over integer compositions

answered Sep 19, 2013 at 13:59

4 votes

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Subset of the integers with certain properties

answered Aug 12, 2014 at 12:43

4 votes

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Major arcs in the proof that every odd number is the sum of at most 5 primes

answered May 12, 2014 at 9:47

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144 Answers

Is there a left-orderable profinite group?

Consequences of the Inverse Galois Problem

How many integers divide a number that involves just three non-zero digits?

Quadratic residues and nonresidues of arbitrary patterns

Not especially famous, long-open problems which anyone can understand

Upper bound for number of prime numbers in a range

Equality of Euclidean numbers / constructible numbers

Prime factors of the members of a certain recurrence

expressing permutations in terms of generators

What is the relationship between the abscissa of holomorphy and abscissa of convergence of a Dirichlet series

Is there any research on how many pairs of prime numbers exist that they describe an even number via Goldbach's Conjecture?

Can there be more than two zeta zeros in between a Gram point and a França-LeClair point?

Is the affine group generically 2-generated?

Extending the discussion on "super Catalan" numbers

Very particular limsup of an integral

Unknown bias in a distribution related to prime numbers

Demystifying complex numbers

Analogues of the Riemann zeta function that are more computationally tractable?

Counting prime points in a bounded region

Specializing non-trivial primality tests

What exactly is wrong with this statement (Lucas-Penrose fallacy)?

representations of $S_k \times S_j$

List of proofs where existence through probabilistic method has not been constructivised

Upper bound on level of a congruence subgroup of the modular group

Is there a nonabelian free group inside a group of positive rank gradient?

How to prove that this equation has only one solution?

The density of numbers of the form $p + 2^k$

Sum over integer compositions

Subset of the integers with certain properties

Major arcs in the proof that every odd number is the sum of at most 5 primes