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Oct
12
awarded  Yearling
Sep
5
comment Can an observed event in fact be of zero probability?
Almost never
Jul
31
answered Produce unique number given two integers
Jul
18
comment When does $Ax=b$ have any solutions?
A non-zero determinant is required only for a unique solution.
Feb
4
comment integral from zero to zero
Perhaps the Dirac delta function is an $f$ which gives a non-zero value
Dec
31
answered Am I Calculating Quartiles Correctly?
Nov
7
comment How to put 9 pigs into 4 pens so that there are an odd number of pigs in each pen?
It's certainly not an odd number though!
Aug
16
comment If $AB=I_n$ and $BA=I_m$ then $n=m$.
It is possibly simpler to say that the conditions in the question mean that $rank(A) = m$ and $rank(A) = n$. Since the rank of a matrix is unique that means $n = m$
Aug
1
comment $2^a +1$ is not divisible by $2^b-1$.
@AndréNicolas Thanks, I really appreciate it.
Aug
1
comment $2^a +1$ is not divisible by $2^b-1$.
Can you explain the last line a little more please?
Jun
4
comment $\int^{1}_{0} f^{-1} = 1 - \int^1_0 f$
@Harold Do you mean obvious?
May
22
comment A Question about Doctoral Theses in Mathematics
Good points. I'd also add that a thesis is also a measure of your expertise in the subject matter and research skills (which is essentialy what the doctorate signifies, not a groundbreaking result), and a short thesis may imply a lack thereof.
Apr
4
revised How can I Create an integral that can only be evaluated via complex contour integration?
Made the question consistent with the quote
Apr
4
suggested suggested edit on How can I Create an integral that can only be evaluated via complex contour integration?
Oct
5
awarded  Commentator
Oct
5
comment How to prove that $G_3>0$ in this case?
If cubing is enough to ensure you have a real number, then squaring this will give you a positive number
Oct
5
comment How to prove that $G_3>0$ in this case?
$\omega^6 = \(\omega^3\)^2$
Oct
5
awarded  Editor
Oct
5
revised What sorts of problems can fractals solve?
added 275 characters in body
Oct
5
answered What sorts of problems can fractals solve?