Top network posts

• 7 Show $\sqrt[3]{5}$ is not contained in any cyclotomic extension of $\mathbb{Q}$.
• 5 Subspace of polynomials vanishing to order $n$
• 5 Let $|G|=2^np$, $p$ an odd prime, $H\unlhd G$ a Sylow $2$-subgroup with $H\cong(\Bbb{Z}/2\Bbb{Z})^n$, $p\nmid 2^n-1$. Prove $Z(G)$ is nontrivial.
• 5 Is ring $\mathbb{Z}_5[x]/I$ is a field, when: $I=(3x^3+2x+1)\mathbb{Z}_5[x]$?
• 5 Are Imaginary Numbers as $Real$ as Real Numbers?
• View more network posts →