XT Chen
• Peking University, Haidian, Beijing, China
• Member for 2 years, 10 months

# 66 Questions

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### Poincaré duality maps the Thom class of the normal bundle to $(-1)^{nk}i_*(\mu_M)$

Jun 7 '20 at 13:59 XT Chen 1,344
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### When is $x^a\sin (x^{-b})$ $\alpha$-Hölder Continuous on $[0,1]$?

Dec 22 '19 at 17:16 fGDu94 3,610
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### If $f(0) = f(n)$ then there are $n$ different $(x , y)$ such that $f(x) = f(y)$ and $x-y \in \mathbb{Z}/\{0\}$

Apr 29 '19 at 0:52 XT Chen 1,344
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### Define homology by simplicial Eilenberg Maclane spectra.

Sep 17 at 18:05 Noel Lundström 4,133

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### Calculate the scheme-theoretic closure

Mar 20 at 14:46 XT Chen 1,344
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### Where does the coefficient $\frac{1}{2}$ of $(-1)^p\frac{1}{2}\bar{\partial}_E^* = \bar{\partial}^*$ in $A^{0,q}(\Omega_X^p)$ come from?

Sep 20 '20 at 4:22 XT Chen 1,344
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### $\Omega=\{(z_1,z')\in \mathbb{C}\times\omega ; \mathrm{log}(\vert z_1 \vert)+u(z') < 0\}$ is pseudoconvex if $u$ is plurisubharmonic

Aug 23 '20 at 8:09 XT Chen 1,344

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### If every subgroup of $G$ is $G^k$ for some k, then $G$ is a cyclic group. [duplicate]

Oct 28 '19 at 11:41 Shaun 32.1k
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### Mean Value Theorem of Integrals for improper integrals:$\int_a^b f(x)g(x) \mathrm{d}x = f(a^+)\int_a^\xi g + f(b^-)\int_\xi^b g$

May 3 '19 at 7:28 XT Chen 1,344

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