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sma
  • Member for 6 years, 3 months
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2 votes
1 answer
46 views

Show the $\gcd(\gcd(f_1, f_2), f_3) =1$, where $(f_1,f_2,f_3) = (1)$ or $(f_1,f_2,f_3)$ generate the unit ideal.

2 votes
1 answer
86 views

Show that we can find a function $f \in L^1(\mathbb R^n)$ s.t. the Fourier transform of $f$, $\hat{f}=1$ in some neighborhood of $0.$

1 vote
1 answer
172 views

Does a bounded function on $\mathbb{R}^n$ mean it is an essentially bounded measurable function?

1 vote
1 answer
325 views

What is $f(r\cos(\theta), r\sin(\theta))$ equal to $1$ in this double integral?

1 vote
1 answer
359 views

Alternative way for expressing "No student in this class has sent e-mail to exactly two other students in this class."

1 vote
0 answers
188 views

Hash without overflow

0 votes
1 answer
150 views

How to do least squares fitting with matrix product of 3 matrices?

0 votes
1 answer
199 views

Reducing 3 SAT to max 2 SAT

0 votes
1 answer
576 views

If $E[XY]=0$, then does that imply $E[X]=0$ or $E[Y]=0$? [closed]

0 votes
2 answers
189 views

If ||Av|| = ||A*v||, then AA*=A*A.

0 votes
1 answer
4k views

Probability Density Function of $Y=X^3$

0 votes
1 answer
62 views

Show $E[T(n)] \in \Omega(n\cdot\log(n))$

0 votes
1 answer
90 views

Method of moments for estimating $n$ in a binomial r.v. - is the estimator the UMVUE?