Logan Maingi
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 Apr 18 awarded Excavator Apr 18 revised How to prove $\cos \frac{2\pi }{5}=\frac{-1+\sqrt{5}}{4}$? Corrected final expression Mar 20 awarded Yearling Jan 3 awarded Vox Populi Jan 3 awarded Talkative Jan 3 awarded Suffrage Dec 21 reviewed No Action Needed Darboux's theorem of several variables Dec 21 reviewed Close Matrix with orthogonal columns? Dec 21 reviewed Approve Is Lyapunov equation always solvable with A as a negative definite matrix? Dec 21 reviewed Approve Restrictions on universal specification (in first-order logic)? Dec 21 reviewed Reject Is this true? $(1+1/n)^n=1+1/1!+1/2!+1/3!+1/4!+\cdots + 1/n!$ Dec 21 reviewed Approve Extended version of the boundedness theorem: $f$ attains its bounds $\inf$ and $\sup$ of $\{f(x) | x \in [a,b]\}$ Dec 21 reviewed Reviewed Infiniteness of non-twin primes. Dec 21 reviewed Looks OK Let $x,y,z$ be integers and $11$ divides $7x+2y-5z$. Show that $11$ divides $3x-7y+12z$. Dec 21 reviewed No Action Needed In a family with two children, what are the chances, if one of the children is a girl, that both children are girls? Dec 21 reviewed Close functional equations with restricted domain Dec 21 reviewed Close random thought: are some infinite sets larger than other Dec 21 reviewed No Action Needed $L^2$ method to solve the PDE $\bar{\partial}u=f$, where $f\in L^{ 2 }_{ (0,p) }(\Omega )$ Dec 21 reviewed Close Consider $P(n)$ as a number of $n$-permutations, which each cycle have even length, and … Dec 21 reviewed Approve Probability that a geyser erupts