Finite degeneration conjecture to a weak Kähler–Ricci soliton
Finite degeneration conjecture to a weak Kähler–Ricci soliton
Let be a Fano manifold and consider weak conical Kähler–Ricci solitons on varying pairs , satisfying
A test-configuration for is a -equivariant degeneration whose central fiber is a polarized variety. Finite degeneration conjecture. One can solve the displayed equation up to by passing through finitely many singular times and changing the pair at each time. At one obtains a -Fano variety admitting a weak Kähler–Ricci soliton, and there is a test-configuration for with central fiber . This conjecture proposes a finite continuation and degeneration process when the original Fano manifold admits no Kähler–Einstein metric. The supplied status evidence says that the cited toric-surface case of the earlier Yau–Tian–Donaldson conjecture is established, but does not resolve this conjecture.
Sources & referencesView supporting material
Primary source
Gábor Székelyhidi, “Extremal Kähler metrics”, arXiv:1405.4836 (2014).
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