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seen May 19 at 7:47

Mar
18
answered Proof that maximizing a function is equivalent to minimizing its negative
Mar
18
answered Is $S=\{(x,y)\in[0,1]\times[0,1]:x,y\in\mathbb Q\}$ Lebesgue measurable?
Mar
15
answered Is this a valid proof to show $\frac{n^5}{2^n}$ diverges?
Mar
8
awarded  Editor
Mar
8
revised Is the function $f(x)=\sin(1/x)$ differentiable at $x=0$?
added 72 characters in body
Mar
8
answered Is the function $f(x)=\sin(1/x)$ differentiable at $x=0$?
Mar
8
awarded  Teacher
Mar
8
comment exponent(power) prime of $n!$ in its factorization
because the next number which divides $p$ is $2p$ and we have that $p>n/2$ or $2p>n$
Mar
8
answered exponent(power) prime of $n!$ in its factorization
Mar
8
comment Two questions regarding circles
Stefan, thanks for editing the formulas, now I know how to write them.
Mar
8
awarded  Informed
Mar
8
answered Two questions regarding circles