AlbertH
Reputation
4,129
Top tag
Next privilege 5,000 Rep.
Approve tag wiki edits
 May 18 awarded Yearling Dec 9 awarded Caucus Sep 30 awarded Explainer Sep 1 comment Principles of Mathematical Analysis, Dedekind Cuts, Multiplicative Inverse Since $p < 1$, there exists an integer $n$ great enough to satisfy $p < 1 - (n + 1)^{-1}$. Then for each $m$ greater than $n$ inequality (1) holds. Aug 21 awarded Informed Jun 5 awarded Nice Answer May 18 awarded Yearling Dec 8 revised Upper bound for norm of Hilbert space operator improved formating Dec 8 answered Upper bound for norm of Hilbert space operator Nov 8 answered Why is it that the vector space of all derivations has the basis $\partial/\partial{x_1} \ldots \partial/\partial{x_n}$? Nov 6 answered Why is this true:$\nabla \cdot (\vec V \otimes \vec V)=(\vec V\cdot \nabla ) \vec V +\vec V(\nabla\cdot \vec V) \;\;?$ Jul 19 revised Suppose $xyz=8$, try to prove that $\sqrt{\frac{1}{1+x}}+\sqrt{\frac{1}{1+y}}+\sqrt{\frac{1}{1+z}}<2$ Replaced the initial wrong proof. Jul 18 answered Suppose $xyz=8$, try to prove that $\sqrt{\frac{1}{1+x}}+\sqrt{\frac{1}{1+y}}+\sqrt{\frac{1}{1+z}}<2$ Jul 10 comment Proving $\frac{a^4}{b^3} +\frac{b^4}{c^3} +\frac{c^4}{a^3} \ge 3$ There was a typo. I corrected it. Thanks. Jul 10 revised Proving $\frac{a^4}{b^3} +\frac{b^4}{c^3} +\frac{c^4}{a^3} \ge 3$ Corrected typo Jul 10 revised Proving $\frac{a^4}{b^3} +\frac{b^4}{c^3} +\frac{c^4}{a^3} \ge 3$ Improved formatting Jul 10 answered Proving $\frac{a^4}{b^3} +\frac{b^4}{c^3} +\frac{c^4}{a^3} \ge 3$ Jul 9 comment Proving $\frac{a^4}{b^3} +\frac{b^4}{c^3} +\frac{c^4}{a^3} \ge 3$ Can you explain me how you deduced $\min_{a^5+b^5+c^5=3}\frac{a^4}{b^3} +\frac{b^4}{c^3} +\frac{c^4}{a^3} \ge \max_{a^5+b^5+c^5=3}3(abc)^{\frac 1 3}$? Jun 18 answered Please the Inequality in the proof of The Isoperimetric Inequality May 18 awarded Yearling