1,511 reputation
825
bio website about:blank
location Berlin, Germany
age 19
visits member for 3 years, 6 months
seen Jul 16 at 0:07

I'm a highschool student from Germany interested in functional programming, especially Haskell.


Jun
10
comment How and why did Weierstrass $\wp$ get its special symbol?
It's basically a cursive / script p.
Jun
8
comment How can I make this recurrent equation non-recurrent?
@hardmath Yes, that's what I'm trying to do. I just saw myself how trivial this question is.
Oct
20
comment How to prove that $\lim\limits_{x\to0}\frac{\sin x}x=1$?
It's nice that you post an answer that was literally posted as the top comment to this question.
Oct
16
comment How can I find a point where an osculating circle goes through a certain point?
@Lays I couldn't find an answer to my question on the page you linked. Please note, that $P$ usually does not lay on $f$.
May
9
comment How to prove that $\lim\limits_{x\to0}\frac{\sin x}x=1$?
@CutieKrait We defined $\sin$ by geometrical means.
Apr
2
comment Why is it impossible to define multiplication in Presburger arithmetic?
Ah, I see. Thank you for this answer.
Mar
31
comment Why is it impossible to define multiplication in Presburger arithmetic?
@MJD How are these axioms?
Mar
31
comment Why is it impossible to define multiplication in Presburger arithmetic?
@MJD Presburger arithmetic is an axiomatic system. People claim that it is impossible to define multiplication within this system. Why?
Sep
8
comment The inverse of the inscribed angle theorem
I am sorry. I usually don't ignore the orientation of angles. I should've made that clear beforehand.
Sep
8
comment The inverse of the inscribed angle theorem
Nice and easy. Thank you!
Sep
8
comment The inverse of the inscribed angle theorem
In the second case, the sign of the angle $\angle ACB$ is negative. The equation $2\angle ACB=\angle AMB$ does not holds if the signs do not match.
Sep
8
comment The inverse of the inscribed angle theorem
@Karolis I fixed the error. My bad :-(
Sep
8
comment The inverse of the inscribed angle theorem
@KarolisJuodelÄ— No. C can be anywhere but the constraint on the angle $\angle ACB$ must hold.
Jun
21
comment Evaluating $\int_0^{\sqrt{3}}{\frac{\sqrt{1+x^2}}{x}}\,dx$
Try wolframalpha.com for evaluating integrals. It even shows a step-by-step-solution!
Jun
21
comment Given a Turing Machine T, create another Turing machine T2 such that L(T) $\neq$ L(T2)
Theorem of rice?
Jun
21
comment An equivalent statement for convergence
@clark Didn't knew that. Thanks for pointing that out! Please close my question.
Mar
11
comment How to come up with the gamma function?
Okay. Thank you!
Mar
11
comment How to come up with the gamma function?
YOur first interpretion is right. But your answer shows only that the integral satisfies the recurrence relation $\Gamma(x+1)=x\Gamma(x)$ and does not show how one can derive that integral.
Mar
11
comment How to come up with the gamma function?
Thank you for that answer although you don't point out how one get's to $\int_0^\infty t^ne^{-1}\;\mathrm dt$.
Mar
11
comment How to come up with the gamma function?
Sorry. I found out that the article actually contains an answer to my question, thus I removed my post.