Mathematics
Xiang Yu's user avatar
Xiang Yu's user avatar
Xiang Yu's user avatar
Xiang Yu
  • Member for 8 years, 11 months
  • Last seen more than a month ago
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About

I'm currently a PhD student majored in mathematics at City University of Hong Kong. My research interest lie in asymptotic analysis, nonlinear elasticity and enumerative combinatorics.

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All Questions Answers
Score Newest
answer
47
Proof of $(\mathbb{Z}/m\mathbb{Z}) \otimes_\mathbb{Z} (\mathbb{Z} / n \mathbb{Z}) \cong \mathbb{Z}/ \gcd(m,n)\mathbb{Z}$
Dec 20, 2015
question
29
Solve the functional equation $f(x)f(1/x)=f(x+1/x)+1$, $f(1)=2$, where $f(x)$ is a polynomial.
Aug 2, 2020
question
25
The inverse of a bijective holomorphic function is also holomorphic
Dec 2, 2014
answer
25
Does convergence in $L^p$ imply convergence almost everywhere?
Nov 9, 2015
question
20
Linear homomorphisms of square matrices are conjugations
Apr 22, 2015
answer
11
How does the quotient $\mathbb{R}/\mathbb{Z}$ become the circle $S^1$?
Mar 23, 2016
answer
10
Continuity of the roots of a polynomial in terms of its coefficients
Jul 22, 2020
answer
10
How to prove that the sum of two log-convex functions is log-convex?
Jan 15, 2016
question
8
If $f$ is a continuous function such that $|f(x+y)-f(x)-f(y)|$ is bounded and $f(n)=o(n)$, then $f$ is bounded
Apr 4, 2015
answer
8
Is this an identity: $\int_X f \, d\mu=\int_{\mathbb{R}} \mu(f^{-1}(t)) \, dt$?
Dec 16, 2014

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