Touching the Z₂ in Three-Dimensional Rotations
classification
🧮 math.HO
math.ATmath.GR
keywords
braidsclosedfactfundamentalgrouppathspresentedproof
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A simple and self-contained proof is presented of the well-known fact that the fundamental group of SO(3) is $Z_2$, using a relationship between closed paths in SO(3) and braids.
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