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math.GT2018
An infinite-rank summand of the homology cobordism group
Irving Dai, Jennifer Hom, Matthew Stoffregen +1
We show that the three-dimensional homology cobordism group admits an infinite-rank summand. It was previously known that the homology cobordism group contains a $\mathbb{Z}^\infty…
math.GT2018
Connected Heegaard Floer homology of sums of Seifert fibrations
Irving Dai
We compute the connected Heegaard Floer homology (defined by Hendricks, Hom, and Lidman) for a large class of 3-manifolds, including all linear combinations of Seifert fibered homo…