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20242026
most citedRigidity of the extremal Kerr-Newman horizon

3 citations · 5 across the 4 of their papers we have counts for

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gr-qc2025

Symmetries of extremal horizons

Alex Colling

We prove an intrinsic analogue of Hawking's rigidity theorem for extremal horizons in arbitrary dimensions: any compact cross-section of a rotating extremal horizon in a spacetime…

math.DG2025

Quasi-Einstein structures and Hitchin's equations

Alex Colling, Maciej Dunajski

We prove (Theorem 1.1.) that a class of quasi-Einstein structures on closed manifolds must admit a Killing vector field. This extends the rigidity theorem obtained in \cite{DL23} f…