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math.DG2021
-invariant steady gradient Ricci solitons on four-manifolds
Timothy Buttsworth
Using center manifolds and topological degree theory, we construct a new family of complete, -invariant and steady gradient Ricci solitons on the four-dimensional non-compac…
math.DG2021
The prescribed cross curvature problem on the three-sphere
Timothy Buttsworth, Artem Pulemotov
The paper studies the problem of prescribing positive cross curvature on the three-dimensional sphere. We produce several existence results and an example of non-uniqueness, dispro…
math.DG2021
-invariant Ricci solitons and ancient flows on
Timothy Buttsworth
Consider the standard action of on . We establish the existence of a uniform constant so that any…