Neil G
Reputation
781
Top tag
Next privilege 1,000 Rep.
Create tags
 Dec15 asked What is the $d\sigma/\sigma$ rule? Dec7 comment Big $\mathcal{O}$ Notation question while estimating $\sum \frac{\log n}{n}$ Can someone repair the title: "Big O notation." Dec1 comment $e$ to 50 billion decimal places @Arturo, I think I understand, thanks. Dec1 comment $e$ to 50 billion decimal places @Arturo, My point is that the parallelization and vectorizing problem is essentially solved by the mapreduce algorithm. All one needs is a program that calculates some digits, whether in hex or in decimal. Dec1 comment $e$ to 50 billion decimal places @J.M. I really don't see that. It's a standard map-reduce with key=decimal positions, value=decimal values. The map-reduce framework does the consolidation automatically. Dec1 comment $e$ to 50 billion decimal places @J.M. Good point, but calculation of the digits of pi and e are easily parallelizable since the calculation of later digits don't depend on earlier ones. Dec1 comment $e$ to 50 billion decimal places Nice answer, but why do you say that we are not good at parallel computing? Most of Google's services are proof of excellent parallelization. Nov24 comment Number of nodes on diagonal planes of a cube Thanks......... Nov24 accepted Number of nodes on diagonal planes of a cube Nov24 comment Number of nodes on diagonal planes of a cube ... or maybe $\binom{A}{2} - 3\binom{B}{2} - 3\binom{C}{2}$ Nov24 comment Number of nodes on diagonal planes of a cube @Rahul: Right, I see that now. So, the solution will be of the form (A choose 2) - 3 (B choose 2)? Nov24 asked Number of nodes on diagonal planes of a cube Nov9 answered About a weighted sum of hitting times for random walks on graphs Nov3 comment Chinese remainder theorem How do you justify the second sentence? Nov3 comment Chinese remainder theorem I have added it. Please let me know if it's correct. Nov3 answered Chinese remainder theorem Nov3 comment Chinese remainder theorem Yes, I will add it as a solution. Nov3 accepted Chinese remainder theorem Nov3 revised Chinese remainder theorem Forgot a condition Nov3 comment Chinese remainder theorem I will update the question. (This problem is a part of a larger problem and I forgot the conditions that I'd used.)