ScalingStacks

Remark . [02HM]

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Remark.

The choice of perturbing the gravitational instanton NiN_{i} of type Aki−1A_{k_{i}-1} by adding a linear function on ℝ3\mathbb{R}^{3} can be regarded as an intermediate choice between resolving the singularity of MϵghM^{\textup{gh}}_{\epsilon} by assuming all punctures pip_{i} have weight ki=1k_{i}=1 and the direct gluing of NiN_{i} to MϵghM^{\textup{gh}}_{\epsilon}. While not strictly necessary, the choice of perturbing NiN_{i} by a linear function makes the exposition more uniform. In particular, the closed definite triple we will construct below fails to be hyperkähler by the same amount in a neighbourhood of qjq_{j} and ±pi\pm p_{i}.

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