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Talk:Open book decomposition

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I thought that Lawsons theorem is just about odd-dimensional spheres, not about arbitrary odd-dimensional manifolds? --Suhagja (talk) 07:38, 23 January 2013 (UTC)[reply]

Why call it a "fibration" if it is fact a fibre bundle?

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The section Definition and construction begins as follows:

"Definition. An open book decomposition of a 3-dimensional manifold M is a pair (B, π) where

  • B is an oriented link in M, called the binding of the open book;
  • π: M \ B → S1 is a fibration of the complement of B such that for each θ ∈ S1, π−1(θ) is the interior of a compact surface Σ ⊂ M whose boundary is B. The surface Σ is called the page of the open book."

A "fibration" is a generalization of a fibre bundle.

But isn't π : M \ B → S1 a genuine fibre bundle projection?

If this is correct, it is much better to label π as such, rather than the much more general concept of a fibration.

I hope someone familiar with this subject can make this definition more precise.