Actually it is one of the exercises of Munkres. $G$ is a group of homeomorphisms of the torus having order $2$. How do I get $G$ in order to make $T/G$ homeomorphic to the Klein bottle? Can anybody give me a hint?
2026-05-05 04:45:16.1777956316
How to make the orbit space $T/G$ of torus $T$ homeomorphic to the Klein bottle?
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