activity
20002024
most citedA Kummer construction for gravitational instantons

45 citations · 138 across the 21 of their papers we have counts for

collaborators

24 papers

math.DG2024

Degenerating conic Kähler-Einstein metrics to the normal cone

Olivier Biquard, Henri Guenancia

Let be a Fano manifold of dimension at least and be a smooth divisor in a multiple of the anticanonical class, with . It is well-known that Kähler-…

math.DG2023★ 2 cited

Gravitational Instantons, Weyl Curvature, and Conformally Kaehler Geometry

Olivier Biquard, Paul Gauduchon, Claude LeBrun

In a previous paper, the first two authors classified complete Ricci-flat ALF Riemannian 4-manifolds that are toric and Hermitian, but non-Kaehler. In this article, we consider gen…

math.DG2023

Instability of conformally Kähler, Einstein metrics

Olivier Biquard, Tristan Ozuch

We prove the instability of conformally Kähler, compact or ALF Einstein 4-manifolds with nonnegative scalar curvature which are not half conformally flat. This applies to all the k…

math.DG2023★ 1 cited

About a Family of ALF Instantons with Conical Singularities

Olivier Biquard, Paul Gauduchon

We apply the techniques developed in our previous article to describe some interesting families of ALF gravitational instantons with conical singularities. In particular, we comple…

math.DG2021★ 19 cited

On toric Hermitian ALF gravitational instantons

Olivier Biquard, Paul Gauduchon

We give a classification of toric, Hermitian, Ricci flat, ALF Riemannian metrics in dimension 4, including metrics with conical singularities. The only smooth examples are on one h…

math.DG2021★ 7 cited

Degenerating Kähler-Einstein cones, locally symmetric cusps, and the Tian-Yau metric

Olivier Biquard, Henri Guenancia

Let be a complex projective manifold and let be a smooth divisor. In this article, we are interested in studying limits when of Kähler-Einstein metrics $ω…