User Karl Kroningfeld - Mathematics Meta Stack Exchange

Karl Kroningfeld

Member for 10 years, 8 months
Last seen more than a month ago

Königsberg, Germany

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Some graduate student.

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20

What are two continuous maps from $S^1$ to $S^1$ which are not homotopic?

13

injection $\mathbb{N}\times\mathbb{N}\to\mathbb{N}$

11

Difference between basis and subbasis in a topology?

11

Atiyah Macdonald – Exercise 2.15 (direct limit)

10

Is $(\ln 2)^2$ transcendental?