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Answers (22)

Votes Activity Newest

8	Prove that lim $(\sqrt{n^2+n}-n) = \frac{1}{2}$
7	Does bounded and continuous implies Lipschitz?
5	Prove that if $n$ is a positive integer then $\sqrt{n}+ \sqrt{2}$ is irrational
4	Calculating the class group of $\mathcal{O}_K$, for $K=\mathbb{Q}(\sqrt{7})$?
3	Inequality on lengths and sums of vectors $\left\lVert\sum_i \vec{a_i}\right\rVert \le \sum_i \left\lVert \vec{a_i}\right\rVert$

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Reputation (586)

+30	Prove that lim $(\sqrt{n^2+n}-n) = \frac{1}{2}$
+10	Show that the form $w$ is closed but not exact
+30	Does bounded and continuous implies Lipschitz?
+10	Graph (or manifold) Lipschitz satisfy the sphere (ball) condition?

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Questions (8)

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9	Is there an irreducible projective hypersurface such that its complement has zero Euler characteristic?
3	Can you have solution for the equation $\|\nabla f\|^2=f\,\Delta f$, for a homogeneous polynomial $f$ with $\deg(f)>2$?
2	Lipschitz manifold and semi-algebraic is Lipschitz graph?
1	Extension of a map $g:\overline{B_1^n}\to \mathbb{R}^2$
0	First Betti number of a finite union of circles

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16	Gromov-Hausdorff convergence to a circle

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