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Mathematics
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Reyo
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  • Member for 9 years, 9 months
  • Last seen more than 9 years ago
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question
6
Proving the series of partial sums of $\sin (in)$ is bounded?
Mar 25, 2015
question
6
Explicit bijection between $\mathbb Q$ and $\mathbb Z \times \mathbb Z$?
Apr 11, 2015
question
4
Prove that if $f$ is entire and $|f(z)| \leq |z|^2+12$ then $f$ is a polynomial of deg $\leq 2$
Jun 21, 2015
question
3
How many matroids with 1 element exist?
Dec 27, 2014
question
3
Let $f: [a,b] \rightarrow [c,d]$ be a monotonic function, so that $image(f)=[c,d]$. Show that $f$ is continuous in $[a,b]$
Dec 31, 2014
question
3
Prove that if $f$ is holomorphic so that $f'(z)=\alpha f(z)$ then $f(z)=ce^{\alpha z}$
Apr 25, 2015
question
3
Show that the set of all points $x \in \mathbb R$ where $f$ is differentiable is definable in $\mathcal M=(\mathbb R; +,-(), \cdot, \lt, 0,1,f)$
May 27, 2015
question
3
Ultraproducts explicit example
Jul 4, 2015
question
2
Prove that if $f$ is continuous in $[0,1]$, and $f(0)=f(1)= \frac{1}{3}$, then there is $c \in (0,1)$ so that $f(c)=c^2$
Dec 31, 2014
question
2
Prove that if $\lim_{n \rightarrow \infty}n(f(\frac{1}{n})-f(0))=L$ then $f'(0)=L$.
Feb 8, 2015