Paper · May 17, 2024

K-stability of special Gushel-Mukai manifolds

Yuchen Liu, Linsheng Wang

math.AGarXiv:2405.10797v5Épijournal de Géométrie Algébrique, Volume 10 (July 6, 2026) epiga:13743
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Abstract

Gushel-Mukai manifolds are specific families of -dimensional Fano manifolds of Picard rank and index where . A Gushel-Mukai -fold is either ordinary, i.e. a hyperquadric section of a quintic Del Pezzo -fold, or special, i.e. it admits a double cover over the quintic Del Pezzo -fold branched along an ordinary Gushel-Mukai -fold. In this paper, we prove that a general special Gushel-Mukai -fold is K-stable for every . Furthermore, we give a description of the first and last walls of the K-moduli of the pair , where is the quintic Del Pezzo fourfold (or fivefold) and is an ordinary Gushel-Mukai threefold (or fourfold). Besides, we compute -invariants of quintic Del Pezzo fourfolds and fivefolds which were shown to be K-unstable by K. Fujita, and show that they admit Kähler-Ricci solitons.

Comments: 36 pages, Final version

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  1. Optimal Degenerations of K-unstable Fano threefolds

    Minghao Miao and Linsheng Wang PDF

    Topics Kähler–Einstein & K-stability, Kähler–Ricci solitons, 3-manifolds · Same author Linsheng Wang · Shared terms “Mukai”, “threefold”, “unstable”

  2. Kähler-Ricci solitons on Fano threefolds with non-trivial moduli

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    Topics Kähler–Einstein & K-stability, Kähler–Ricci solitons, 3-manifolds · Same author Linsheng Wang · Shared terms “threefold”, “Fano”

  3. Log del Pezzo -surfaces, Kähler-Einstein metrics, Kähler-Ricci solitons and Sasaki-Einstein metrics

    Daniel Hättig, Jürgen Hausen and Hendrik Süß PDF

    Topics Kähler–Einstein & K-stability, Kähler–Ricci solitons, Kähler geometry · Shared terms “Del Pezzo”, “Picard”

  4. A Note On Kähler-Ricci Flow on Fano Threefolds

    Minghao Miao and Gang Tian PDF

    Topics Kähler–Ricci solitons, 3-manifolds, Kähler geometry · Shared terms “Mukai”, “admit Kähler”, “threefold”

  5. Lower bound of modified -energy on a Fano manifold with degeneration for Kähler-Ricci solitons

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    Topics Kähler–Ricci solitons, Kähler geometry, Stability & uniqueness · Shared terms “Fano manifold”

  6. Extremal Kähler–Ricci solitons on Fano manifolds are Kähler–Einstein

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    Topics Kähler–Einstein & K-stability, Kähler–Ricci solitons, Kähler geometry · Shared terms “Fano manifold”

  7. From Kähler Ricci solitons to Calabi-Yau Kähler cones

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    Topics Kähler–Einstein & K-stability, Kähler–Ricci solitons, Kähler geometry · Shared terms “Fano manifold”, “Fujita”

  8. Multiplier Hermitian-Einstein metrics on Fano manifolds of KSM-type

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    Topics Kähler–Einstein & K-stability, Kähler–Ricci solitons, Kähler geometry · Shared terms “Fano manifold”

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