john mangual
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# 7,481 Reputation

77 Apr 23
 +2 21:08 accept modification of Dedekind cuts +5 17:51 upvote How to write $\sqrt{4x^2 - 3}$ in the ring $\mathbb{Q}[x]/(x^3 - x - 1)$? +50 12:34 bounty What book or website has nice, colorful diagrams illustrating real quadratic integer rings? +10 12:26 upvote What book or website has nice, colorful diagrams illustrating real quadratic integer rings? +10 00:57 upvote Algebraic number theory topics for undergrads
32 Apr 22
 +15 18:42 accept Prove that $\mathcal{O}_3$ and $\mathcal{O}_7$ are euclidean domains +2 16:17 accept Explicit Galois Action for $X^3 - X -1$ +15 14:06 upvote Explicit Galois Action for $X^3 - X -1$
62 Apr 21
 +35 20:20 upvote Explicit Galois Action for $X^3 - X -1$ -8 20:04 downvote Explicit Galois Action for $X^3 - X -1$ +25 18:24 upvote How to write $\sqrt{4x^2 - 3}$ in the ring $\mathbb{Q}[x]/(x^3 - x - 1)$? +10 03:18 upvote Is $\sum_{k=1}^{m-1}\frac{1}{\sin^2\frac{k\pi}{m}}=\frac{m^2-1}{3}$ true for $m\in\mathbb N$?
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