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 Jan23 awarded Good Answer Jan22 revised convergence of $\prod_{n=1}^\infty (1-\frac{z}{n!})$ edited tags Jan18 awarded Popular Question Jan17 reviewed Close Simplifying a hyperbolic trigonometric expression Jan17 reviewed Close let $x$ be in finite group $G$ and let order of $x$ is $p$. If $h^{-1}xh = x^{10}$ for a finite group show that $p=3$ Jan15 comment convergence of $\prod_{n=1}^\infty (1-\frac{z}{n!})$ @corciacandy What do you mean by 'order'? If you are talking about convergence order towards the convergence of the product is uniform or punctually you can use the M test Weiersstrass to achieve uniform convergence. Jan13 revised convergence of $\prod_{n=1}^\infty (1-\frac{z}{n!})$ added 534 characters in body Jan13 answered convergence of $\prod_{n=1}^\infty (1-\frac{z}{n!})$ Jan13 revised Proving $proj_{proj_{\vec u} \vec v} \vec v=proj_{\vec u} \vec v$ deleted 2 characters in body Jan8 revised $C^p_0(B,\mathbb{X})$ is a Banach space with the norm of $C^p\!\!$-topology? Making the question a little more specific and clear. Jan6 revised $C^p_0(B,\mathbb{X})$ is a Banach space with the norm of $C^p\!\!$-topology? added 4 characters in body Jan4 reviewed Close Irreducibility of multivariate polynomials over algebraic numbers Jan4 reviewed Leave Open Prove this is a Martingale Jan4 comment if $x = \sqrt{x+1} + \sqrt{x+2} + \sqrt{x+3}$ then x =? @user21820 yes. I did not express myself properly. I wanted to say that for each root a new root is added. Thanks for pointing. Jan3 revised Find this limit: $\lim_{n \to \infty}{(e^{\frac{1}{n}} - \frac{2}{n})^n}$ added 151 characters in body Jan3 revised Find this limit: $\lim_{n \to \infty}{(e^{\frac{1}{n}} - \frac{2}{n})^n}$ Improvements in algebraic expressions. Added colors. Jan3 comment if $x = \sqrt{x+1} + \sqrt{x+2} + \sqrt{x+3}$ then x =? What do you think strange is not strange. The truth is that every time you raise squared each algebraic expressions you enter one (1) new root in the equation. Example: $x=1\implies x^2=1\implies x=1 \mbox{or } x=-1$ Jan3 comment C*-algebras: Literature? @Freeze_S No problem. Added a more complete list. Jan3 revised C*-algebras: Literature? Improvements and update the answer. Jan3 answered C*-algebras: Literature?