cactus314
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 Jan 14 asked Non-equivalent metrics on $PSL_2(\mathbb{R})$ Jan 13 revised What is $\frac{1}{1+\sqrt[3]{2}}$ in $\mathbb{Q}(\sqrt[3]{2})$? obviously the power is b^3 as the author meant to write Jan 13 comment How do you find the value of $\sum_{r=0}^{44} \tan^2(2r+1)$? Not exactly the same math.stackexchange.com/questions/217240/… Jan 10 awarded Nice Question Jan 10 accepted What is the minimum polynomial of $x = \sqrt{2}+\sqrt{3}+\sqrt{4}+\sqrt{6} = \cot (7.5^\circ)$? Jan 8 answered Probability of A waits B at least 10 minutes Jan 8 answered Book recommendation for rigorous multilinear algebra , tensor analysis, manifolds. Jan 6 accepted Prove there are infinitely many primes in $\mathbb{Z}[i]$ Jan 4 comment What is the minimum polynomial of $x = \sqrt{2}+\sqrt{3}+\sqrt{4}+\sqrt{6} = \cot (7.5^\circ)$? the computation of the minimal polynomial is pretty mechanical... but you can still get it wrong :-) I am asking if we pick out some deeper geometric meaning or symmetric to help us understand better. In the same way roots of unity correspond to regular polygons. Jan 4 asked What is the minimum polynomial of $x = \sqrt{2}+\sqrt{3}+\sqrt{4}+\sqrt{6} = \cot (7.5^\circ)$? Jan 3 revised Graph Relatives for Tessellation of the Hyperbolic Plane 'moduLar' not 'modular' Dec 30 comment calculating $(1-i\sqrt{3})^{1+i}$ This would be useful if you study the zeta function over the imaginary numbers $\zeta_{\mathbb{Z}[i]}(s)$ Dec 29 comment How to write the Adeles over $\mathbb{Q}(i)$? @anomaly if I understand correctly than $\mathbb{Q}_5 \otimes \mathbb{Q}(i) = \mathbb{Q}_{2+i} \oplus \mathbb{Q}_{2-i}$ ? And a similar story for $p = 13 = 2^2 + 3^2$ ? The case $p = 2+i$ seems funny... it's probably not true that $\mathbb{Q}_2 \otimes \mathbb{Q}(i) = \mathbb{Q}_{1+i} \oplus \mathbb{Q}_{1-i}$ Dec 29 asked How to write the Adeles over $\mathbb{Q}(i)$? Dec 28 reviewed Leave Open Isomorphism in Clifford semigroups Dec 28 reviewed Leave Open Solving $x^{x^{x^{x^…}}}=a$ Dec 28 reviewed Leave Open Definition of exact sequence Dec 28 reviewed Leave Open Why use ln-ln plot in proportional hazard test? Dec 28 reviewed Leave Open What is the meaning of adjacency algebra? Dec 27 awarded Nice Answer