FUZxxl

1,320 reputation

522

bio	website	about:blank
	location	Berlin, Germany
	age	18
visits	member for	2 years, 5 months
	seen	Jun 13 at 1:59
stats	profile views	232

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

	1,320 reputation	bio	website	about:blank	visits	member for	2 years, 5 months
522 badges		location	Berlin, Germany		seen	Jun 13 at 1:59

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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	accepted	Why is it impossible to define multiplication in Presburger arithmetic?
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?
Mar 30	asked	Why is it impossible to define multiplication in Presburger arithmetic?
Mar 4	awarded	Good Question
Feb 23	comment	How to prove that $\lim\limits_{x\to0}\frac{\sin x}x=1$? How do we know that sin x is equal to x for small values?
Jan 1	awarded	Yearling
Dec 12	awarded	Nice Question
Dec 5	awarded	Nice Answer
Oct 31	awarded	Taxonomist
Oct 23	awarded	Popular Question
Oct 18	asked	Squaring modulo n — is there a systematic way to generate the fixpoints?
Sep 30	awarded	Popular Question
Sep 8	revised	The inverse of the inscribed angle theorem added 44 characters in body
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	accepted	The inverse of the inscribed angle theorem
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.