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Eric Ley's user avatar
Eric Ley's user avatar
Eric Ley
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I'm interested in low dimensional topology.

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7
Continuous surjection $\mathbb R^m\to \mathbb R^n$ that is not a quotient map
7
How to solve $\int_0 ^1 \left( \frac{x^2}{1+x^2} \right)\frac{1-x\tan(x)+ \tan(x)-x}{1 -x\tan(x)-\tan(x)-x}dx$?
5
Every continuous function from $\mathbb{R}$ to $\mathbb{R}$ is a quotient map