AlanH
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 Mar 27 comment How to prove that every number, such that its square root is an integer, has an odd number of divisors? why must an odd product imply an odd number of divisors? Jan 18 awarded Notable Question Dec 22 awarded Notable Question Nov 24 awarded Nice Question Nov 16 awarded Notable Question Nov 10 awarded Popular Question Oct 27 awarded Notable Question Oct 6 awarded Yearling Jun 27 awarded Notable Question Jun 21 awarded Notable Question Feb 11 awarded Self-Learner Feb 6 awarded Popular Question Dec 2 revised Give upper and lower bound for $\left|\cos{na} + \frac{\sin{nb}}{n}\right|$ updated post to include more work Dec 1 asked Give upper and lower bound for $\left|\cos{na} + \frac{\sin{nb}}{n}\right|$ Dec 1 accepted How to find the maximum and minimum of $\dfrac{\sin x}{x^2+1}$? Nov 25 asked How to find the maximum and minimum of $\dfrac{\sin x}{x^2+1}$? Nov 11 accepted How to show $a_n = \frac{n+1}{n-1}$ is strictly decreasing by induction? Nov 11 asked How to show $a_n = \frac{n+1}{n-1}$ is strictly decreasing by induction? Oct 15 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 $ny$? Oct 14 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 $n(y-x)>1$?