celtschk
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 May 15 reviewed Reject Interior of closed ball May 2 reviewed Approve examples of a special problem in linear transformation Apr 25 reviewed Approve Proof of $\sum_{k = 1}^{n} \frac{1}{k^{2}} < 2 - \frac{1}{n}$ Apr 17 reviewed Approve how does this converges? Sequence and series convergence Apr 11 reviewed Approve radical expression foil which confuses me Apr 6 reviewed Approve Prove a language is Context Free Apr 6 reviewed Approve Proof polynomial has only one real root. Apr 5 reviewed Approve How can I show whether the series $\sum_{n=1}^\infty \frac{(-1)^n}{n(2+(-1)^n)}$ converges or diverges? Apr 5 reviewed Reject Please can you check my proof of this about twice differentiable function Apr 5 reviewed Approve Find $t$ in $N = b \times g^t$. Mar 26 reviewed Approve Proof by Induction $4^n \geq 16n^2$ Mar 26 reviewed Approve Proof of Integration formula Mar 26 reviewed Approve Cauchy-Schwarz Inequality and Linear inependence and $\cos \theta$ Mar 25 reviewed Approve define $f :R\to R$ by $f(x)=\frac{1}{(x-1)}$ when $x<1$ and $f(x)=\sqrt{(x-1)}$ when $x\geq 1$. Show that $f$ is a bijection and determine its inverse Mar 24 reviewed Approve Maximization with the Dual using the Simplex Method. Jan 25 reviewed Approve Have arrows in a category with this property a special name? Jun 13 reviewed Approve Why is $1 =1$? why is it so why cant be $1 =$ something else? Sep 22 reviewed Approve Are there infinitely many “super-palindromes”? Sep 19 reviewed Reviewed Strictly increasing function Aug 24 reviewed Approve $\operatorname{Aut}(\mathbb Z_n)$ is isomorphic to $U_n$.