Mathematics
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playitright

i did undergrad math at the university of michigan and now i'm just reading through textbooks on subjects i find interesting

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5 Show that $\frac{P(z)}{Q(z)} = \sum_{k=1}^{n}\frac{P(\alpha_k)}{Q'(\alpha_k)(z-\alpha_k)}$ Feb 27 '17
3 Show that $a^2 \equiv a \mod (1+i)$ for all $a \in \mathbb{Z}[i]$. Dec 13 '16
3 Does $\bigcup_{n=1}^\infty \left(-\infty, 1-\frac{1}{n}\right) = (-\infty, 1)$? Nov 22 '17
3 Successful studying for a proof-based course final exam? Dec 10 '15
2 Writing a sum of unit step functions as a piecewise function Apr 26 '16
2 Having trouble classifying and solving the ODE $2yy' = y^2 + t - 1$ Feb 17 '16
2 Prove that $\langle 2 \rangle \cong \langle 3 \rangle$ (subgroups of $\mathbb{Q}_{>0}$) Nov 8 '16
1 Expanding $E[N^2]-E[N]$ Apr 12 '16
1 Show that any automorphism of $\mathbb{Z}_n$ is equal to multiplication by $f(1)$ mod $n$. Nov 15 '16
1 Show that $GL_n(\mathbb{R})/GL_n^+(\mathbb{R}) \cong \mathbb{Z}_2$ Dec 12 '16
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