Hairy Ball Theorem

Posted2 months agoActive2 months ago

greekanalyst

2 points

1 comments

en.wikipedia.orgSciencestory

calmneutral

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MathematicsTopologyGeometry

Key topics

Mathematics

Topology

Geometry

The Hairy Ball Theorem, a mathematical concept stating that it's impossible to comb a hairy ball flat, is shared via a Wikipedia link, sparking a brief discussion on its implications.

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01Story posted
Nov 2, 2025 at 4:26 PM EST
2 months ago
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Nov 2, 2025 at 4:32 PM EST
6m after posting
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1 comments in 0-1h
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04Latest activity
Nov 2, 2025 at 4:32 PM EST
2 months ago
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Discussion (1 comments)

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dlcarrier

2 months ago

This article has one of my favorite concatenations of jargon into a single sentence:

    In this regard, it follows that for any compact regular 2-dimensional manifold with non-zero Euler characteristic, any continuous tangent vector field has at least one zero.

Those are all words most people recognize, but without experience in topology, it is completely incomprehensible.

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ID: 45793587Type: storyLast synced: 11/17/2025, 7:49:33 AM

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