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XT Chen
  • Member for 6 years
  • Last seen more than a month ago
  • Peking University, Haidian, Beijing, China
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About

Currently an undergraduate in PKU. Interested in algebraic geometry.

I am devoted to introducing methods from algebraic topology into algebraic geometry. Topics like derived geometry, motivic homotopy and algebraic K-theory are what I am interested in.

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27
Why the sphere spectrum is more correct than $\mathbb{Z}$?
17
Calculating the exponential of an upper triangular matrix
13
Seek for a algebro-geometric proof: the group homomorphism $\mathrm{SL}(2,\mathbb{Z}) \rightarrow \mathrm{SL}(2,\mathbb{Z}/N\mathbb{Z})$ is surjective
10
Is there a strictly increasing differentiable function maps positively measurable set to zero measure set?
9
How to prove the existence and uniqueness of the solution of a second order linear ODE?