Mathematics
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j.c.
  • Member for 13 years, 1 month
  • Last seen more than 2 years ago
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143
Are there examples of non-orientable manifolds in nature?
52
Analogue to covering space for higher homotopy groups?
46
Best books for mathematical background?
44
What is the exterior derivative intuitively?
43
Why does the sky change color? Why is the sky blue during the day, red during sunrise/set and black during the night?

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