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Rectangle condition and its applications
Geometric Topology · Submitted 28 Apr 2014
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We show that the satisfaction of the rectangle condition for a $n$-bridge decomposition can guarantee that the Hempel distance for the $n$-bridge decomposition is greater than or equal to $2$.
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The abstract, sentence by sentence
In this paper, we define the rectangle condition on the bridge sphere for a $n$-bridge decomposition of a knot whose definition is analogous to the definition of the rectangle condition for Heegaard splittings of $3$-manifolds. We show that the satisfaction of the rectangle condition for a $n$-bridge decomposition can guarantee that the Hempel distance for the $n$-bridge decomposition is greater than or equal to $2$. In particular, we give an interesting family of alternating 3-bridge knots by using the rectangle condition and a modified train track argument.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | In this paper, we define the rectangle condition on the bridge sphere for a $n$-bridge decomposition of a knot whose definition is analogous to the definition of the rectangle condition for Heegaard splittings of $3$-manifolds. | contribution 0.97 | 0.91 | 0.05 | asserted 0.99 |
| s1 | We show that the satisfaction of the rectangle condition for a $n$-bridge decomposition can guarantee that the Hempel distance for the $n$-bridge decomposition is greater than or equal to $2$. | result 0.99 | 0.95 | 0.69 | asserted 0.98 |
| s2 | In particular, we give an interesting family of alternating 3-bridge knots by using the rectangle condition and a modified train track argument. | contribution 0.82 | 0.95 | 0.11 | asserted 1.00 |
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The paper
Original abstract
In this paper, we define the rectangle condition on the bridge sphere for a $n$-bridge decomposition of a knot whose definition is analogous to the definition of the rectangle condition for Heegaard splittings of $3$-manifolds. We show that the satisfaction of the rectangle condition for a $n$-bridge decomposition can guarantee that the Hempel distance for the $n$-bridge decomposition is greater than or equal to $2$. In particular, we give an interesting family of alternating 3-bridge knots by using the rectangle condition and a modified train track argument.
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We mention that Kwon [ref] recently gave another criterion for recognizing strongly irreducible bridge spheres.
A knot with destabilized bridge spheres of arbitrarily high bridge number · Bridge diagrams and $2$-connected condition · 0.81
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