## Geometry & Topology

### Lens spaces, rational balls and the ribbon conjecture

Paolo Lisca

#### Abstract

We apply Donaldson’s theorem on the intersection forms of definite 4–manifolds to characterize the lens spaces which smoothly bound rational homology 4–dimensional balls. Our result implies, in particular, that every smoothly slice 2–bridge knot is ribbon, proving the ribbon conjecture for 2–bridge knots.

#### Article information

Source
Geom. Topol., Volume 11, Number 1 (2007), 429-472.

Dates
First available in Project Euclid: 20 December 2017

https://projecteuclid.org/euclid.gt/1513799837

Digital Object Identifier
doi:10.2140/gt.2007.11.429

Mathematical Reviews number (MathSciNet)
MR2302495

Zentralblatt MATH identifier
1185.57006

#### Citation

Lisca, Paolo. Lens spaces, rational balls and the ribbon conjecture. Geom. Topol. 11 (2007), no. 1, 429--472. doi:10.2140/gt.2007.11.429. https://projecteuclid.org/euclid.gt/1513799837

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