Hagen von Eitzen
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382/400 score
 14h comment Sum of two normal numbers need not be a normal one Actually, if one doesn't know what normal means one would not even guess that $d_i(\omega)$ denotes the $i$th binary digit of $\omega$ ... 14h answered Prove or disprove $\mathbb{Q}[x] /(x^5-3) \cong \mathbb{Q}[x] /(x^5-9)$ 14h revised Find all odd positive integers $n$ greater than $1$ such that for any coprime divisors … added 1025 characters in body 1d comment Proving that $F_{kn}$ is a multiple of $F_n$ by induction on $n$ (Fibonacci numbers) Yeah, make your choice so that the proof works ... 1d answered What sequence of polynomials is equal to $2^n$ for integers $1$ to $k$? 1d answered Find all odd positive integers $n$ greater than $1$ such that for any coprime divisors … 1d comment Assumptions, Axioms and Premises Maybe the attempt to make a somewhat formal distiction between these is as moot as for a distinction between lemma, proposition, theorem, corollary. 1d awarded Nice Answer 1d answered The relation $\cong$ an equivalence relation on nonempty collection of groups $\mathcal{G}$ 1d comment Proof of infinite monkey theorem. @AdityaAgarwal it is a theorem about a probability hence probabilty theory is the tool to use. Also, Borel-Cantelli is more or less equivalent to the infinite monkey theorem. The idea is to compare convergence of $1-\prod(1-p)$ with that of $\sum p$ 1d answered Is an empty parenthesis a valid mathematical expression? 1d answered Largest eigenvalues of AA' equals to A'A 2d revised “Convex” polynomials edited body 2d answered “Convex” polynomials 2d answered shown that f is even 2d answered How do I go about proving that an even function about x=0 has a derivative of 0? 2d answered Use of brackets around the integrand 2d answered Let $f:[0,\infty]\to R$ be differentiable on $(0, \infty)$, and $f'(x)\to b$ as $x \to \infty$. Show that $\lim_{x \to \infty}\frac{f(x)}{x}=b$ 2d comment Is there a symbol for “given” in mathematics? Actually, I wouldn't use "given" in this context for the natural language version. 2d revised Solutions for the following equation. deleted 9 characters in body