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Top Questions
51
votes
Decomposing polynomials with integer coefficients
elementary-number-theory
polynomials
diophantine-equations
asked Jul 6, 2012 at 5:42
math.stackexchange.com
38
votes
Proving a known zero of the Riemann Zeta has real part exactly 1/2
complex-analysis
special-functions
riemann-zeta
conjectures
riemann-hypothesis
asked Oct 25, 2010 at 8:53
math.stackexchange.com
31
votes
Does $\left(n^2 \sin n\right)$ have a convergent subsequence?
sequences-and-series
analysis
special-functions
asked Jun 28, 2012 at 22:40
math.stackexchange.com
19
votes
On applying the quadratic formula to a first-degree equation
polynomials
roots
infinity
limits
asked Aug 16, 2010 at 6:32
math.stackexchange.com
19
votes
Convergence of series involving iterated $ \sin $
analysis
sequences-and-series
asked Dec 12, 2010 at 3:44
math.stackexchange.com
9
votes
How many elements in a ring can be invertible?
abstract-algebra
ring-theory
finite-rings
asked Jul 10, 2012 at 1:36
math.stackexchange.com
Top Answers
29
Let $f:\mathbb{R}\longrightarrow \mathbb{R}$ a differentiable function such that $f'(x)=0$ for all $x\in\mathbb{Q}$
math.stackexchange.com
20
Fake induction proof
math.stackexchange.com
6
Examples where it is easier to prove more than less
math.stackexchange.com
5
What to call a symbol that denotes an "undisclosed" given number?
matheducators.stackexchange.com