Title: Torus knots and rational homology balls

Abstract: 
In this talk we will try to motivate and partially answer the
question: which integer surgeries on torus knots result in 3 manifolds
which bound rational homology balls?  Our approach combines Kirby
calculus, Heegaard-Floer homology and the combinatorial study of
lattice embeddings. This is a work in progress in collaboration with
P. Aceto, K. Larson et M. Golla.