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David Holden

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

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16 Must a ring (commutative, with 1), in which every non-zero ideal is prime, be a field? Aug 8 '19
13 Evaluate the limit $\lim\limits_{n \to \infty} \frac{1}{1+n^2} +\frac{2}{2+n^2}+ \ldots +\frac{n}{n+n^2}$ Dec 24 '13
13 Linear independence of $\sqrt{2}$, $\sqrt[3]{2}$, $\sqrt[4]{2}, \dots$ over the rationals Feb 16 '15
13 How do I show this $\cos^2(\arctan(x))=\frac{1}{1+x^2}$ Aug 16 '16
11 Proof that $n/(n^2+1)$ tends to 0 as $n$ tends to infinity Dec 2 '13
9 convergence of the iterated cosine [duplicate] Dec 30 '13
9 Query regarding Theorem 1.21 in Baby Rudin Nov 13 '14
9 Inequality $\arctan x ≥ x-x^3/3$ Jan 12 '15
8 Structure of the full symmetric group on a countably infinite set Dec 12 '13
8 is the unique solution of $\cos t = t$ a transcendental number? Dec 29 '13
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