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location Germany
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Oct
2
accepted Application of Desargues' theorem for constructions
Sep
30
awarded  Explainer
Sep
19
comment Application of Desargues' theorem for constructions
Opening two questions for the same topic isn't appropriate
Sep
19
asked Application of Desargues' theorem for constructions
Sep
17
comment Integral of $x^x$
use $y=x^x$ (there is no closed form)
Jul
23
awarded  Yearling
Jul
6
comment Solving congruences
@JoeJohnson126 because 7 is not equivalent to 1 mod 5 (congruence II)
Jul
6
comment Solving congruences
Thanks, with necessary/sufficient it seems quite logical. Thanks a lot.
Jul
6
accepted Solving congruences
Jul
2
awarded  Curious
Jul
2
awarded  Inquisitive
Jun
28
asked Solving congruences
May
21
comment Problem with root equation
What have you tried? Use $\sqrt{4-x^2}=\sqrt{(2-x)(2+x)}$ To control your work: the solution ist $x=\frac 6 5$
Apr
24
accepted Uniqueness of Point
Apr
3
comment Uniqueness of Point
and how do I argue for $X \notin [PQ]$ and the 3rd case $a=b$?
Apr
2
answered Uniqueness of Point
Apr
2
comment Uniqueness of Point
I have to plug in $d(X,P) + d(X,Q) = |P-Q|$ for e.x. $d(X,P)$ or how should I start?
Apr
2
asked Uniqueness of Point
Mar
27
revised Ring theory question: $I=\langle x,2 \rangle$ prime/maximal ideal in $\mathbb Z[x]$?
improved formatting
Mar
27
suggested suggested edit on Ring theory question: $I=\langle x,2 \rangle$ prime/maximal ideal in $\mathbb Z[x]$?