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john w.
  • Member for 10 years, 2 months
  • Last seen more than 1 year ago
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12
Move QED symbol to the left, i.e. at the end of the sentence
9
How to prove: $n! \times (n+1) = (n+1)!$
7
$S^{2n}$ is the universal cover of $B$, what is $\pi_1(B)$.
6
$f$ an isometry from a hilbert space $H$ to itself such that $f(0)=0$ then $f$ linear.
5
ACC on principal ideals implies factorization into irreducibles. Does $R$ have to be a domain?
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