KhashF's user avatar
KhashF's user avatar
KhashF's user avatar
KhashF
  • Member for 5 years, 6 months
  • Last seen this week
23 votes

Results from abstract algebra which look wrong (but are true)

10 votes
Accepted

Ergodic measures for the logistic map

9 votes

Any hints on how to prove that the function $\lvert\alpha\;\sin(A)+\sin(A+B)\rvert - \lvert\sin(B)\rvert$ is negative over the half of the total area?

9 votes

Can the product of two disjoint subsets of numbers like 7, 77, 777, ... be equal?

8 votes

Examples of common false beliefs in mathematics

7 votes

Which great mathematicians had great political commitments?

7 votes

Computing $\pi_1$ of the complement of a non-singular plane curve

6 votes
Accepted

Quotient of a normal quasi-projective variety by a finite group

5 votes
Accepted

Hausdorff dimension of Julia set

5 votes

How to compute singular homologies of affine hypersurface in $A^4$

5 votes
Accepted

Equation of the Chebyshev $\psi$ function

5 votes

Prominent non-mathematical work of mathematicians

4 votes

What's a great christmas present for someone with a PhD in Mathematics?

4 votes
Accepted

Computing the maximum modulus

4 votes
Accepted

Commuting matrices of complex functions

4 votes

Theorems with many distinct proofs

4 votes
Accepted

Does the following condition imply ergodicity?

3 votes

vector field on the torus

3 votes

3-periodic point implies positive topological entropy

3 votes

Sumsets with the property "$A+B=C$ implies $A=C-B$"

3 votes

An easy proof that $S(n)$ does not embed into $A(n+1)$?

3 votes
Accepted

fundamental group of $X/\mathbb{R}^n$

3 votes

Order of abelian subgroup of the automorphism group of an abelian group

3 votes

Sufficient condition such that the set of zeros of an analytic function $f:\mathbb{R}^n \to \mathbb{R}$ contains only isolated points

3 votes

"Totally real" linear transformations

3 votes

A finite group whose conjugacy classes outside a normal subgroup have equal size

2 votes
Accepted

Does this property implies Lipschitz continuity?

2 votes

Non-negative integer solutions of a system of equations $\sum_{i=1}^{n} x_i^2 = 4k-6, \sum_{i=1}^{n} x_i = 2k$

2 votes

What are the necessary conditions on $f$ if $f(x)=f(\sin(\pi x)+x)\iff x\in\Bbb{Z}$?

2 votes

Two definitions of Teichmüller space: relative isotopy or not?