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9. Universal DR cycles

Proposed by Holmes, Schmitt, Schwarz:

JPPZ have DR-cycle with target varieties (possibly take $B \mathbb{G}_m$ as target).

One Should get a universal DR-cycle on $\mathbf{Pic}_{\mathcal C / \mathcal M}$ (similar to a cycle on blowup)
  • Unpleasant comparison questions: prove that a natural diagram is commutative
  • What if the target is $B=\mathbb{Z}_r$?
  • Can we generalize the JPPZ formula to the universal DR cycle?

      Cite this as: AimPL: Double ramification cycles and integrable systems, available at http://aimpl.org/doubleramific.