207 reputation
17
bio website
location
age
visits member for 1 year, 8 months
seen Apr 14 at 14:42

Studying Computer Science


Nov
30
awarded  Yearling
Aug
5
accepted Which linear map maps $\begin{bmatrix}a_0&a_1&a_2\end{bmatrix}^\top\mapsto \begin{bmatrix}a_0&a_0+a_1&a_0+a_1+a_2\end{bmatrix}^\top$?
Aug
5
comment Which linear map maps $\begin{bmatrix}a_0&a_1&a_2\end{bmatrix}^\top\mapsto \begin{bmatrix}a_0&a_0+a_1&a_0+a_1+a_2\end{bmatrix}^\top$?
Ah that's how you do it. Very easy, thanks!
Aug
5
asked Which linear map maps $\begin{bmatrix}a_0&a_1&a_2\end{bmatrix}^\top\mapsto \begin{bmatrix}a_0&a_0+a_1&a_0+a_1+a_2\end{bmatrix}^\top$?
Aug
4
revised Prove that $\{x_1=1,\,x_{n+1}=\frac {x_n}2+\frac 1{x_n} \}$ converges when $n \to \infty$
added 27 characters in body
Aug
4
revised Prove that $\{x_1=1,\,x_{n+1}=\frac {x_n}2+\frac 1{x_n} \}$ converges when $n \to \infty$
added 2 characters in body
Aug
4
accepted Prove that $\{x_1=1,\,x_{n+1}=\frac {x_n}2+\frac 1{x_n} \}$ converges when $n \to \infty$
Jun
10
revised Prove that $\{x_1=1,\,x_{n+1}=\frac {x_n}2+\frac 1{x_n} \}$ converges when $n \to \infty$
added 2 characters in body
Jun
10
answered Prove that $\{x_1=1,\,x_{n+1}=\frac {x_n}2+\frac 1{x_n} \}$ converges when $n \to \infty$
Jun
10
comment Prove that $\{x_1=1,\,x_{n+1}=\frac {x_n}2+\frac 1{x_n} \}$ converges when $n \to \infty$
How did you transform $x_n-{1\over 2}\Bigl(x_n+{2\over x_n}\Bigr)$ into ${1\over 2}{(x_n^2-2)\over x_n}$?
Jun
10
asked Prove that $\{x_1=1,\,x_{n+1}=\frac {x_n}2+\frac 1{x_n} \}$ converges when $n \to \infty$
Jun
6
answered Solving a simple ${\cal O}(N\log N)$ recursive equation.
Jun
6
revised Solving a simple ${\cal O}(N\log N)$ recursive equation.
added 8 characters in body
Jun
6
answered Solving a simple ${\cal O}(N\log N)$ recursive equation.
Jun
6
revised Solving a simple ${\cal O}(N\log N)$ recursive equation.
corrected substitution
Jun
5
comment Solving a simple ${\cal O}(N\log N)$ recursive equation.
This sum looks good; I remember that my algorithms & data structures professor used a very special trick to prove that this sum does indeed equal ${\cal O}(N\log N)$.
Jun
5
asked Solving a simple ${\cal O}(N\log N)$ recursive equation.
Jun
5
accepted Quadratic matrices: When is $A^\top B^\top = AB$?
Jun
4
awarded  Nice Question
Jun
3
awarded  Editor