What is the 4D Equivalent of a Möbius Strip or Klein Bottle?

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    Geometry Topology
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Discussion Overview

The discussion revolves around identifying a four-dimensional equivalent of the Möbius strip and Klein bottle, exploring theoretical concepts in topology and geometry. Participants propose various models and generalizations while questioning the nature of dimensionality in these constructs.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants suggest that real projective space could be a candidate for the 4D equivalent of a Möbius strip and Klein bottle.
  • Others propose that a higher-dimensional Klein bottle could serve as the 4D equivalent.
  • One participant argues that the Klein bottle is a two-dimensional manifold and questions the dimensionality of the constructs being discussed.
  • Another participant mentions that connecting edges of a cube could yield a manifold, but the classification of this as a Möbius strip is debated.
  • Some participants discuss the embedding properties of the Klein bottle and other manifolds in different dimensional spaces, noting that certain manifolds cannot be embedded in R^4 but can in R^5.
  • There are references to generalizing the Klein bottle to three-dimensional flat manifolds and the implications of such generalizations.
  • One participant describes the construction of the Klein bottle and its relationship to other surfaces, such as the torus and real projective plane.
  • A theorem regarding the embedding of closed n-dimensional manifolds is mentioned, highlighting the relationship between orientability and dimensionality.
  • Some participants suggest exploring tesseracts as a potential 4D construct related to the discussion.
  • There are multiple methods proposed for generalizing the Klein bottle, including identifying faces of a cube in various ways.

Areas of Agreement / Disagreement

Participants express differing views on the dimensionality and classification of the Klein bottle and its generalizations. There is no consensus on a definitive 4D equivalent, and multiple competing models and interpretations remain present throughout the discussion.

Contextual Notes

Participants note that the definitions and properties of the manifolds discussed may depend on the context of topology versus differential geometry, leading to different interpretations and conclusions.

  • #31
martinbn said:
You would use "string" instead of "curve"?
Probably not. I just took the first word that came to mind. I would likely use path so that I directly have a parameterization to work with - just in case. It avoids reediting.
 

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