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Let C_{TS} be the subgroup of the smooth knot concordance group generated bytopologically slice knots. Endo showed that C_{TS} contains an infinite ranksubgroup, and Livingston and Manolescu-Owens showed that C_{TS} contains a Z^3summand. We show that in fact C_{TS} contains an infinite rank summand. Theproof relies on the knot Floer homology package of Ozsvath-Szabo and theconcordance invariant epsilon.Comment: 36 pages, 15 figure

An infinite-rank summand of topologically slice knots