Geodesic
Sums of lens spaces bounding rational balls
Lisca, Paolo1
1Dipartimento di Matematica “L. Tonelli”, Largo Bruno Pontecorvo, 5, Università di Pisa, I-56127 Pisa, ITALY
Algebraic and Geometric Topology, Tome 7 (2007) no. 4, pp. 2141-2164
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We classify connected sums of three-dimensional lens spaces which smoothly bound rational homology balls. We use this result to determine the order of each lens space in the group of rational homology 3–spheres up to rational homology cobordisms, and to determine the concordance order of each 2–bridge knot.

DOI : 10.2140/agt.2007.7.2141
Keywords: 2–bridge knots, concordance group, lens spaces, rational homology balls, connected sums

Lisca, Paolo  1

1 Dipartimento di Matematica “L. Tonelli”, Largo Bruno Pontecorvo, 5, Università di Pisa, I-56127 Pisa, ITALY 
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Lisca, Paolo. Sums of lens spaces bounding rational balls. Algebraic and Geometric Topology, Tome 7 (2007) no. 4, pp. 2141-2164. doi: 10.2140/agt.2007.7.2141

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