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Chuwei Zhang

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103 reputation
 bio website visits member for 7 months
6 badges
 location seen Apr 30 at 21:28
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7 Questions

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3
 Let $\alpha$ be a root of $X^3+X^2-2X+1\in\mathbb{Q}[X]$.
3
 Invariant subspaces
3
 What is $\cap_{i\in \emptyset}A_i$?
3
 In a graph, the vertices can be partitioned $V=V_1\cup V_2$ so that at most half of all edges run within each part?
0
 Approximating Borel sets by finite unions of intervals
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2 Answers

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1
 Given $\int_0^1 x f(x)dx=0$, show that $\int_0^1|1-f(x)|dx>1/2$
1
 Invariant subspaces

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Mathematics Stack Exchange Mathematics 103 rep 6

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