JohnJamesSmith
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 Aug 21 awarded Yearling Jul 27 awarded Guru Aug 21 awarded Yearling Jun 4 awarded Good Answer Aug 21 awarded Yearling Apr 9 awarded Enlightened Apr 9 awarded Nice Answer Aug 21 awarded Yearling Aug 19 revised If $x, \log_{10}(x), \log_{10}\log_{10}(x)$ are in arithmetic progression, find the range of $x$. proof of existence Aug 19 answered If $x, \log_{10}(x), \log_{10}\log_{10}(x)$ are in arithmetic progression, find the range of $x$. Aug 18 comment $f(x) = x^r$ equaling to $r \cdot x$ when $f$ is cyclic group $G \rightarrow G$ No, the $\cdot$ in $r\cdot x$ is plain old multiplication of integers. This multiplication is not the same as the group operation, which in this case happens to be integer addition. Aug 18 comment $f(x) = x^r$ equaling to $r \cdot x$ when $f$ is cyclic group $G \rightarrow G$ The added quote clarifies everything :) When the group operation is addition, $f(x) = rx$ by definition. As Marc notes, the notation is somewhat distasteful. Aug 18 answered Find a side of a triangle given other two sides and an angle Aug 18 comment $f(x) = x^r$ equaling to $r \cdot x$ when $f$ is cyclic group $G \rightarrow G$ I must be missing something. What do you mean by $r \cdot x$? Is $r$ an element of $G$? Jun 25 answered Closest point of line segment without endpoints May 12 answered Sum from 0 to n of $n \choose i$? May 12 answered Working out two lengths when only one length and an angle is known on a right-angled triangle Apr 27 revised Best self study math books? edited tags Apr 26 revised Showing that $\cos\left(\frac{\pi}{5}\right)=\frac{1}{2}\phi?$ added image comment Apr 26 answered Showing that $\cos\left(\frac{\pi}{5}\right)=\frac{1}{2}\phi?$