User Julian Rosen

82 votes

Sophisticated treatments of topics in school mathematics

answered Dec 7, 2015 at 22:16

43 votes

What are reasons to believe that e is not a period?

answered Sep 30, 2017 at 1:47

39 votes

Accepted

Why these surprising proportionalities of integrals involving odd zeta values?

answered Apr 22, 2019 at 16:00

33 votes

Accepted

Classical algebraic varieties VS $k$-schemes VS schemes

answered Feb 18, 2014 at 21:35

27 votes

Does there exist a full and faithful embedding of $\mathsf{Poset}$ in $\mathsf{Set}$?

answered Dec 21, 2018 at 12:21

26 votes

Massive cancellations

answered Nov 25, 2014 at 5:31

24 votes

Accepted

Growth of the "denominator" of powers of an algebraic number

answered Nov 22, 2013 at 1:10

23 votes

Accepted

Similar matrices over $\mathbb Z_p$

answered Oct 11, 2017 at 20:26

22 votes

Accepted

Is every sequence that looks like an AP really an AP?

answered Apr 30, 2017 at 23:39

19 votes

Accepted

How do I evaluate this sum :$\sum_{n=1}^{\infty}\frac{H_{n}^3}{(n+1)2^n} $?

answered Oct 13, 2016 at 21:53

17 votes

Accepted

Is a topological fiber-bundle, whose total space admits a retraction onto a fiber, trivial?

answered Sep 22, 2017 at 13:42

17 votes

The underlying space of a scheme remembers its affineness?

answered Apr 13, 2019 at 3:19

16 votes

Measuring a presheaf's failure to be a sheaf?

answered Aug 21, 2017 at 15:13

16 votes

Accepted

Is an entire function, with nowhere vanishing derivative, always a covering map?

answered Oct 19, 2015 at 18:46

14 votes

Accepted

Evaluating the integral $\int_0^\infty \frac{\psi(x)-x}{x^2}dx.$

answered May 10, 2011 at 21:21

14 votes

Evaluating the integral $\int_{1}^{\infty}\frac{\{u\}}{u^{2}}\left(\log u\right)^{k}du.$

answered May 11, 2011 at 3:29

13 votes

Accepted

Motives associated to a Number Field

answered Oct 7, 2017 at 23:56

13 votes

Accepted

Must a continuous $\varphi:\mathbb R^n\to\mathbb R^n$ with $\mathbb Q^n \subseteq \varphi[\mathbb Q^n]$ be surjective?

answered Jun 25, 2021 at 18:01

12 votes

Accepted

mod 5 partition identity proof

answered Feb 5, 2016 at 16:42

12 votes

Characterizing $\mathbb{Q}[X]$ via a property of its tensor powers

answered Dec 26, 2013 at 3:12

11 votes

Accepted

Identify ring of polynomials symmetric under forgetting variables

answered Apr 15, 2015 at 14:10

11 votes

Flipping coins on a budget

answered Sep 18, 2012 at 4:31

10 votes

Accepted

Can an odd map be null homotopic?

answered Oct 18, 2014 at 19:48

10 votes

Accepted

Recognize this countably generated abelian group?

answered Oct 30, 2015 at 19:29

10 votes

How few $k$-dimensional subspaces of $V$ are enough to have a complement to each $n-k$-dimensional subspace?

answered Oct 16, 2016 at 0:39

10 votes

Accepted

“Algebraization" of $p$-adic fields

answered Sep 22, 2018 at 19:49

9 votes

Limiting probabilities for two-player game drawing random uniform numbers

answered Oct 1, 2014 at 16:18

9 votes

Accepted

Connectedness of units in finite-dimensional commutative complex algebras

answered Oct 28, 2015 at 18:33

9 votes

Accepted

Is there a "free abelian group of rank 1" in the category of affine group schemes?

answered Jul 13, 2015 at 5:16

8 votes

Accepted

Does the limit of this product over primes converge for all $\Re(s) > \frac12$?

answered Nov 29, 2015 at 19:49

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79 Answers

Sophisticated treatments of topics in school mathematics

What are reasons to believe that e is not a period?

Why these surprising proportionalities of integrals involving odd zeta values?

Classical algebraic varieties VS $k$-schemes VS schemes

Does there exist a full and faithful embedding of $\mathsf{Poset}$ in $\mathsf{Set}$?

Massive cancellations

Growth of the "denominator" of powers of an algebraic number

Similar matrices over $\mathbb Z_p$

Is every sequence that looks like an AP really an AP?

How do I evaluate this sum :$\sum_{n=1}^{\infty}\frac{H_{n}^3}{(n+1)2^n} $?

Is a topological fiber-bundle, whose total space admits a retraction onto a fiber, trivial?

The underlying space of a scheme remembers its affineness?

Measuring a presheaf's failure to be a sheaf?

Is an entire function, with nowhere vanishing derivative, always a covering map?

Evaluating the integral $\int_0^\infty \frac{\psi(x)-x}{x^2}dx.$

Evaluating the integral $\int_{1}^{\infty}\frac{\{u\}}{u^{2}}\left(\log u\right)^{k}du.$

Motives associated to a Number Field

Must a continuous $\varphi:\mathbb R^n\to\mathbb R^n$ with $\mathbb Q^n \subseteq \varphi[\mathbb Q^n]$ be surjective?

mod 5 partition identity proof

Characterizing $\mathbb{Q}[X]$ via a property of its tensor powers

Identify ring of polynomials symmetric under forgetting variables

Flipping coins on a budget

Can an odd map be null homotopic?

Recognize this countably generated abelian group?

How few $k$-dimensional subspaces of $V$ are enough to have a complement to each $n-k$-dimensional subspace?

“Algebraization" of $p$-adic fields

Limiting probabilities for two-player game drawing random uniform numbers

Connectedness of units in finite-dimensional commutative complex algebras

Is there a "free abelian group of rank 1" in the category of affine group schemes?

Does the limit of this product over primes converge for all $\Re(s) > \frac12$?