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Math.SE seems to be going the stackoverflow way. Pity.


Nov
15
revised Given $a_{1}=1, \ a_{n+1}=a_{n}+\frac{1}{a_{n}}$, find $\lim \limits_{n\to\infty}\frac{a_{n}}{n}$
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Nov
15
comment How can one efficiently generate n small relatively prime integers?
@Charles: The whole point of the question is to generate small numbers which are relative prime and if possible in linear time. This answer does not help in that regard (the reason for my -1). The mistakes are irrelevant.
Nov
15
comment $G$ finite abelian. $G/H$, $G/K$ primary cyclic. $H\cap K=1$. $H\neq 1\neq K$. Is $HK=G$?
+1 for showing the attempt.
Nov
15
revised Polynomials, derivatives and repeated roots
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Nov
15
comment Polynomials, derivatives and repeated roots
+1: For a more general proof.
Nov
15
comment Polynomials, derivatives and repeated roots
@Arturo: Given the way the question was phrased, I am confident this is $\mathbb{R}[x]$ or $\mathbb{C}[x]$. (Looks more like a high-school/beginning college level question to me).
Nov
15
comment Polynomials, derivatives and repeated roots
@Qia: Why can't we assume that in $\mathbb{R}[x]$?
Nov
15
answered Polynomials, derivatives and repeated roots
Nov
15
comment Recurrence trouble: $T(n)=2T(n/2)+T(n/3)+\theta(n^2)$
@ECE: What do you mean by better result? Akra-Bazzi immediately shows that T(n) = theta(n^2). What more are you expecting?
Nov
15
comment Recurrence trouble: $T(n)=2T(n/2)+T(n/3)+\theta(n^2)$
@ECE: A better way is Akra-Bazzi as I just described! If this is homework and you are expecting a simpler answer, please say so.
Nov
15
comment Recurrence trouble: $T(n)=2T(n/2)+T(n/3)+\theta(n^2)$
@ECE: I still have no clue what you are trying to say. I have edited the answer to add more information.
Nov
15
revised Recurrence trouble: $T(n)=2T(n/2)+T(n/3)+\theta(n^2)$
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Nov
15
comment Recurrence trouble: $T(n)=2T(n/2)+T(n/3)+\theta(n^2)$
@ECE: What? I don't understand.
Nov
15
revised Recurrence trouble: $T(n)=2T(n/2)+T(n/3)+\theta(n^2)$
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Nov
15
answered Recurrence trouble: $T(n)=2T(n/2)+T(n/3)+\theta(n^2)$
Nov
15
answered How to find the logical formula for a given truth table?
Nov
14
revised Calculate point on hypotenuse of right-angled triangle
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Nov
14
revised Does the series $\sum\limits_{n=1}^{\infty}\frac{\sin(n-\sqrt{n^2+n})}{n}$ converge?
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Nov
14
comment Does the series $\sum\limits_{n=1}^{\infty}\frac{\sin(n-\sqrt{n^2+n})}{n}$ converge?
+1 for showing the effort.
Nov
14
comment How to calculate the expected number of distinct items when drawing pairs?
+1: For the effort!