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Lior Bary-Soroker

Tel Aviv

http://www.math.tau.ac.il/~barylior

In Tel Aviv
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Top Questions
72 votes

The inverse Galois problem, what is it good for?

nt.number-theory galois-theory asked Nov 24 '09 at 23:46
mathoverflow.net

26 votes

Is $\varphi(n)/n$ the maximal portion of $n$-cycles in a degree $n$ group?

finite-groups gr.group-theory co.combinatorics asked Dec 25 '09 at 21:12
mathoverflow.net

20 votes

When to split/merge papers?

mathematical-writing career advice asked Jan 10 '10 at 21:07
mathoverflow.net

19 votes

Number of zero digits in factorials

elementary-number-theory factorial decimal-expansion asked Jan 25 '13 at 21:14
math.stackexchange.com

17 votes

Element in the absolute Galois group of the rationals

absolute-galois-group nt.number-theory asked Nov 25 '09 at 13:06
mathoverflow.net

17 votes

A short proof for simple connectedness of the projective line

ag.algebraic-geometry ac.commutative-algebra etale-cohomology characteristic-p etale-covers asked Nov 15 '17 at 16:16
mathoverflow.net

11 votes

Number of generators of a subgroup of a finite simple group

finite-groups asked Jun 23 '12 at 11:45
mathoverflow.net

10 votes

If $I$ is a finitely generated ideal of $A[X]$, is $I\cap A$ necessarily finitely generated for a commutative unital ring $A$?

abstract-algebra commutative-algebra ring-theory ideals asked Feb 21 '13 at 13:11
math.stackexchange.com

9 votes

Does any integral domain contain an irreducible element?

commutative-algebra ring-theory algebraic-number-theory asked Feb 7 '13 at 15:33
math.stackexchange.com

9 votes

What is the density of integers of the form $a^2+nb^2$?

nt.number-theory reference-request analytic-number-theory asked Jan 10 '17 at 7:55
mathoverflow.net

1 2

Top Answers
30
Can a non-surjective polynomial map from an infinite field to itself miss only finitely many points?
mathoverflow.net

26
Fun but serious mathematics books to gift advanced undergraduates.
math.stackexchange.com

23
Examples of interesting false proofs
mathoverflow.net

12
How to find number of prime numbers between two integers
math.stackexchange.com

10
Degrees of factors of polynomial $f(x)=x^q-(ax^2+bx+c)\in \mathbb{F}_q[x]$
mathoverflow.net

9
Prove that $ f(x) $ has at least two real roots in $ (0,\pi) $
math.stackexchange.com

9
Twin primes for polynomials in $\Bbb Z[X]$
mathoverflow.net

9
Infiniteness of the Galois cohomology over a number field with coefficients in a finite Galois module
mathoverflow.net

8
Question about inverse Galois problem
math.stackexchange.com

8
Showing $[\mathbb{Q}(\sqrt[4]{2},\sqrt{3}):\mathbb{Q}]=8$.
math.stackexchange.com

7
What can be said about the Galois group of $f(g(x))$?
math.stackexchange.com

7
Prove $\lim \limits_{x \to\infty } \frac{f(x)}{x}=0$ and $f$ differentiable implies $ \lim \limits_{x \to\infty } \inf |f'(x)|=0 $
math.stackexchange.com

7
How can we find this limit $\lim_{n\to\infty \\x\to\infty}f^n(x)$?
math.stackexchange.com

7
Cases where the number field case and the function field (with positive characteristic) are different
mathoverflow.net

6
A polynomial whose Galois group is $D_8$
math.stackexchange.com

6
Counterexamples in Algebra?
mathoverflow.net

6
Maximal separable extension of $\mathbb F_q((t))$
mathoverflow.net

5
Example of algebraic field not honoring the Total Order relation?
math.stackexchange.com

5
Elements of infinite order in a profinite group
mathoverflow.net