1,415 reputation
214
bio website kmlinux.fjfi.cvut.cz/…
location Prague, Czech Republic
age 27
visits member for 1 year, 10 months
seen yesterday

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
17
comment Is there an interval notation for complex numbers?
@Teepeemm It's not interval arithmetics, it's simply set arithmetics with addition and multiplication, and you can do this over any ring, right?
Aug
17
comment Is there an interval notation for complex numbers?
@JimmyK4542 It is common to define $X+Y = \{x+y:x\in X, y\in Y\}$ IMHO. There's no need to introduce an extra symbol for that.
Aug
17
comment Is there an interval notation for complex numbers?
+1 This just shows that defining a complex interval to be a rectangle doesn't sound like a great idea...
Aug
17
comment Is there an interval notation for complex numbers?
@GEdgar Better one: Do not introduce notation unless you are 111% sure you need it and it makes your paper easier to follow.
Aug
10
revised What is remainder when $5^6 - 3^6$ is divided by $2^3$ (method)
improved formatting
Aug
10
suggested suggested edit on What is remainder when $5^6 - 3^6$ is divided by $2^3$ (method)
Aug
8
comment What is the oldest open problem in geometry?
@DavidH Sorry, the margin I mean the comment area is too small to catch all of that :D
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