1,447 reputation
214
bio website kmlinux.fjfi.cvut.cz/…
location Prague, Czech Republic
age 27
visits member for 1 year, 11 months
seen Sep 14 at 12:30

Math PhD student at Czech Technical University in Prague and at LIAFA in Paris.

Code licence details applicable on my posts on TeX.SX.


Aug
8
comment What is the oldest open problem in geometry?
@littleO This problem is as old as the humankind. First, we thought that the earth is flat. Then we realized that it's not flat, then we forgot this and neglected it, then we found out it's true. Then we thought that the whole space is flat (i.e., $\simeq\mathbb R^3$), only to realize that this is not true either.
Aug
1
revised Produce unique number given two integers
added 130 characters in body
Aug
1
answered Produce unique number given two integers
Jun
13
comment Proof of irrationality of a series
+1 very nice, simple, straighforward yet not trivial argument :)
Jun
5
comment Prove $\sqrt6$ is irrational
sorry, corrected. And well, I say that I use stronger weapons, which can be used in a large framework, I know that simpler solutions exist.
Jun
5
revised Prove $\sqrt6$ is irrational
added 2 characters in body
Jun
3
answered What is a Parabolic Fixed Point?
Jun
3
answered Prove $\sqrt6$ is irrational
Jun
3
comment Evaluate a limit (probably involving L'Hôpital rule)
you should use exp in the appropriate places I believe, now you mix e as a number and e(x) as a function.
Mar
31
comment How do I integrate $\frac{1}{x^6+1}$
@MorganWilde Because you have to, the space of polynomials modulo a quadratic polynomial is generated by $1,x$ and not only by $1$.
Mar
31
comment How do I integrate $\frac{1}{x^6+1}$
+1 certainly faster than my approach. It's been a while I knew these tricks, now I remember only the general techniques :-/
Mar
31
comment How do I integrate $\frac{1}{x^6+1}$
@MorganWilde No worries, I added a small tutorial.
Mar
31
revised How do I integrate $\frac{1}{x^6+1}$
added 495 characters in body
Mar
31
answered How do I integrate $\frac{1}{x^6+1}$
Mar
31
comment which axiom(s) are behind the Pythagorean Theorem
@William if $A_1\wedge A_2\wedge\dots\wedge A_n \Leftrightarrow B$, then $B$ is equivalent to the system of axioms $A_1,\dots,A_n$, so I'm no quite sure what you speak to in the second part. And if $A\wedge B\Rightarrow T$ and $A\wedge C\Rightarrow T$ and $A\wedge B\not\Rightarrow C$ and $A\wedge C\not\Rightarrow T$, then you got two non-equivalent proofs of your theorem $T$. I would never "guess" which axioms are "better" in any other way than possibility to derive ones from the others. (But maybe it's just too late and I overlook some stupidity in my arguments.)
Mar
31
comment which axiom(s) are behind the Pythagorean Theorem
Equivalent = Relying the same set of axioms, usually. Therefore a proof that uses less axioms is "better", and a proof that uses different non-equivalent axioms is simply "different".
Mar
28
revised If $\mathbb Z_m\times\mathbb Z_n$ is cyclic, then it's generated by $(\mathrm{gen}(F),\mathrm{gen}(G))$
corrected mn.gcd to mn/gcd
Mar
28
suggested suggested edit on If $\mathbb Z_m\times\mathbb Z_n$ is cyclic, then it's generated by $(\mathrm{gen}(F),\mathrm{gen}(G))$
Mar
17
comment Why can't you pick socks using coin flips?
+1 for "countable vs. uncountable".
Mar
2
revised How do I setup the lagrangian for this problem?
added 818 characters in body