AlanH
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 Feb11 awarded Self-Learner Feb6 awarded Popular Question Dec2 revised Give upper and lower bound for $\left|\cos{na} + \frac{\sin{nb}}{n}\right|$ updated post to include more work Dec1 asked Give upper and lower bound for $\left|\cos{na} + \frac{\sin{nb}}{n}\right|$ Dec1 accepted How to find the maximum and minimum of $\dfrac{\sin x}{x^2+1}$? Nov25 asked How to find the maximum and minimum of $\dfrac{\sin x}{x^2+1}$? Nov11 accepted How to show $a_n = \frac{n+1}{n-1}$ is strictly decreasing by induction? Nov11 asked How to show $a_n = \frac{n+1}{n-1}$ is strictly decreasing by induction? Oct15 comment Clarification for proof of $\mathbb{Q}$ being dense in $\mathbb{R}$ (Rudin's PMA) @ThomasAndrews And if it is the $nx$ obtained from $n(y-x)>1$, how does one know to focus on $nx$ and not $ny$? Oct14 comment Clarification for proof of $\mathbb{Q}$ being dense in $\mathbb{R}$ (Rudin's PMA) @ThomasAndrews When you first mention $nx$, are you referring to the $nx$ obtained from $n(y-x)>1$? Oct14 comment Baby Rudin Theorem 1.20 (b) Proof @BrianM.Scott Why doesn't the set begin with "-m_2"? Oct7 awarded Popular Question Oct6 awarded Yearling Sep30 awarded Explainer Aug30 awarded Popular Question Aug25 awarded Popular Question Jul2 awarded Curious Jul2 awarded Inquisitive May25 awarded Popular Question Mar9 awarded Popular Question