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Idonknow
  • Member for 11 years, 7 months
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A mathematician is a person who can find analogies between theorems;

A better mathematician is one who can see analogies between proofs and the best mathematician can notice analogies between theories;

And one can imagine that the ultimate mathematician is one who can see analogies between analogies

--S. Banach

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question
11
Examples of Baire Class $\xi+1$ but not $\xi$ functions for each countable ordinal $\xi.$
May 31, 2018
question
8
If $E\oplus_\phi E \cong E\oplus_\psi E,$ does it imply that $\phi= \psi$?
Jul 31, 2018
question
7
How do I efficiently find a sequence of Reidemeister moves between equivalent link diagrams?
Nov 6, 2013
question
7
Status of two Banach space theory open problems posted by Pełczyński
Apr 24, 2018
question
7
Reference Request: Existence of Ordinal Rank Theory?
May 26, 2018
question
4
If the closed unit ball of Banach space has at least one extreme point, must the Banach space the be a dual space?
Dec 2, 2018
question
3
Example of a Baire Class $1$ function $f$ satisfying $\omega\cdot n<\beta(f)\leq \omega\cdot (n+1)$ for some natural number $n\geq 1.$
Jun 1, 2018
question
3
Does Bishop-Phelps Theorem hold for extreme points (slightly different version)?
Jun 12, 2018
question
3
Is it true that every Banach space has at least one extreme point that is normed by some point?
Oct 24, 2018
question
2
Usage of complex moments in complex plane
May 13, 2013
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42
What is the difference between LyX and LaTeX?
41
Prove that there is a real number $a$ such that $\frac{1}{3} \leq \{ a^n \} \leq \frac{2}{3}$ for all $n=1,2,3,...$
30
Given $y_n=(1+\frac{1}{n})^{n+1}$ show that $\lbrace y_n \rbrace$ is a decreasing sequence
25
Let $p_1, p_2,\dots,p_n$ be polynomials of $k$ variables $x_1,\dots,x_k$ and $p_1^2 + \dots +p_n^2=x_1^2 + \dots + x_k^2$ Prove that $n \geq k$.
24
Open sets in product topology