Does anyone have a good quick proof of this using the Simplicial Approximation Theorem? I'm aware that it comes out as a corollary when considering edge paths and the edge group, but this seems like quite heavy machinery for what should be a simple idea. I haven't been able to put together a convincing argument myself though!
2026-03-29 09:11:53.1774775513
The Fundamental Group of a Polyhedron Depends Only on its $2$-Skeleton
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