Mathematics
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Q. Zhang

Apparently, this user prefers to keep an air of mystery about them.

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  • Member for 5 years, 2 months
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  • Last seen 14 hours ago

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11 Prove $\sqrt{2}$ is between $\dfrac{a}{b}$ and $\dfrac{a+2b}{a+b}$ Sep 18 '16
8 Compute integral of general form $ \int_0^\infty \left(\frac{x}{\sinh x}\right)^n d x $ Mar 29
6 Quotient of $\textrm{GL}(2,\textbf{R})$ by the conjugate action of $\textrm{SO}(2,\textbf{R})$ Sep 12 '16
6 Understanding Godement's criterion on quotient manifolds Sep 13 '16
5 Prove that if A is an uncountable set and B is a countable set, then A-B must be uncountable Sep 18 '16
5 Prove $x^x+y^y\ge x^2+y^2$ for $x,y>0$ and $x+y\le 2$. Apr 4
4 How to solve the nonlinear recurrence relation $a_{n+1} = \frac{1-a_n}{3+a_n}$ Apr 5
4 Finding trigonometric integral Sep 20 '16
4 $GL_{n}(\mathbb{Z})$ and $GL_{n+1}(\mathbb{Z})$ are not isomorphic Jan 4 '20
4 What are the orbits of tensor product under the action of a product of groups? Dec 7 '19
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