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An expert is a man who has made all the mistakes, which can be made, in a very narrow field. (Niels Bohr)


Jan
3
revised Find this limit: $ \lim_{n \to \infty}{(e^{\frac{1}{n}} - \frac{2}{n})^n}$
Improvements in algebraic expressions. Added colors.
Jan
3
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: $x=1\implies x^2=1\implies x=1 \mbox{or } x=-1$
Jan
3
comment C*-algebras: Literature?
@Freeze_S No problem. Added a more complete list.
Jan
3
revised C*-algebras: Literature?
Improvements and update the answer.
Jan
3
answered C*-algebras: Literature?
Jan
2
answered Find this limit: $ \lim_{n \to \infty}{(e^{\frac{1}{n}} - \frac{2}{n})^n}$
Jan
2
revised $ \|u(x)+u(x)-x +o(\|x\|^p)\|<r $?
added 78 characters in body; edited tags
Jan
2
revised $ \|u(x)+u(x)-x +o(\|x\|^p)\|<r $?
added 78 characters in body; edited tags
Jan
2
revised $ \|u(x)+u(x)-x +o(\|x\|^p)\|<r $?
added 50 characters in body
Jan
2
comment $ \|u(x)+u(x)-x +o(\|x\|^p)\|<r $?
@Behaviour I edited my attempt. I think it is now clearer.
Jan
2
revised $ \|u(x)+u(x)-x +o(\|x\|^p)\|<r $?
added 50 characters in body
Jan
1
revised $ \|u(x)+u(x)-x +o(\|x\|^p)\|<r $?
edited body
Jan
1
asked $ \|u(x)+u(x)-x +o(\|x\|^p)\|<r $?
Dec
31
comment A question regarding a double series.
see jstor.org/stable/1967602?seq=1#page_scan_tab_contents
Dec
29
accepted If $\mu(A|\mathcal{J}_n)=1_{A}$ then $\mu(A|\displaystyle\bigcap_{n\in\mathbb{N}}\mathcal{J}_n)=1_A$?
Dec
28
revised $ C^p_0(B,\mathbb{X})$ is a Banach space with the norm of $C^p\!\!$-topology?
deleted 12 characters in body
Dec
28
revised $ C^p_0(B,\mathbb{X})$ is a Banach space with the norm of $C^p\!\!$-topology?
added 49 characters in body
Dec
28
revised $ C^p_0(B,\mathbb{X})$ is a Banach space with the norm of $C^p\!\!$-topology?
added 637 characters in body
Dec
28
comment $ C^p_0(B,\mathbb{X})$ is a Banach space with the norm of $C^p\!\!$-topology?
@aes It Would Be $u$ is continuous with respect to norm $\|\;\cdot\;\|_{\mathbb{X}}$ and the $i$-th derivative $D^{(i)}u(x)$ is continuous with respect to norm $\|\;\cdot\;\|_{\mathcal{L}(\mathbb{X}^i,\mathbb{X})}$?
Dec
28
comment $ C^p_0(B,\mathbb{X})$ is a Banach space with the norm of $C^p\!\!$-topology?
@aes You mean you need to $\| u \|_{C^{\,0}}<\infty? $