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Alex

Apparently, this user prefers to keep an air of mystery about them.

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  • Member for 7 years, 7 months
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  • Last seen May 13 at 7:16

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14 Can we arrange $\{1,…,16\}$ in $4\times 4$-grid so {products of rows} = {products of columns}? Jan 22
8 How do I find the roots of this polynomial of degree $4$? Dec 30 '15
8 Polynomial of $3\times 3$ matrix with $\operatorname{tr}(A)=\operatorname{tr}(A^2)=0$ and $\det(A)=1$ Dec 31 '15
7 If $K\cap\Bbb Q^{\text{cycl}}=\Bbb Q(\zeta_m)$ and $K/\Bbb Q$ Galois, then $\text{Gal}(K(\zeta_n)/K)\cong\text{Gal}(\Bbb Q(\zeta_n)/\Bbb Q(\zeta_m))$ Apr 14 '16
5 Find a relation between the sum of $100$ positive numbers and the sum of their pairwise products Dec 31 '15
4 Dimension of the eigenspace Mar 4 '16
4 Example of field's normal closure that's not Abelian? Jul 22 '16
3 Which primes ramify when adjoining roots of a unit? Dec 24 '15
3 How are unramified extensions of number fields formed? Jan 7 '16
3 Submodules and quotients of finitely generated modules Dec 31 '15
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