
Special Issue on Differential Geometry Inspired by Mathematical Physics in honor of JeanPierre Bourguignon for his 75th birthday
The Guest Editors for this special issue are
Denis Auroux (Harvard University, USA)
Patrick Foulon (Institut de Mathématiques de Marseille, France)
Marc Herzlich (Université de Montpellier, France)
Oussama Hijazi (Université de Lorraine, France)
Andrei Moroianu (Université ParisSaclay, France)
This special issue is dedicated to JeanPierre Bourguignon on the occasion of his 75th birthday.
Topics for this special issue will include:
 spin geometry, spectral problems;
 Ricci and scalar curvatures, Einstein metrics;
 Kähler–Einstein metrics and other canonical metrics in complex geometry (extremal, etc.);
 positive curvature;
 Ricci flow;
 relativity;
 geometric analysis;
 mathematics and society.
There is no limit to the length of an article. Deadline for paper submission is June 30, 2023.
How to Submit an Article to the Issue.
All articles will go through the standard peer reviewing procedure of SIGMA.
If you have your paper ready earlier than the deadline, we encourage you to send it now. The reviewing process starts once the paper is submitted and we will publish the paper as soon as the positive publication decision is made. The paper will be indexed in the relevant databases as soon as it is published without waiting for completion of the special issue.
Papers in this Issue:

Total Mean Curvature and First Dirac Eigenvalue

Simon Raulot
SIGMA 19 (2023), 029, 14 pages [ abs
pdf ]

CYT and SKT Metrics on Compact SemiSimple Lie Groups

Anna Fino and Gueo Grantcharov
SIGMA 19 (2023), 028, 15 pages [ abs
pdf ]

Yamabe Invariants, Homogeneous Spaces, and Rational Complex Surfaces

Claude LeBrun
SIGMA 19 (2023), 027, 11 pages [ abs
pdf ]

Spin${}^h$ Manifolds

H. Blaine Lawson Jr.
SIGMA 19 (2023), 012, 7 pages [ abs
pdf ]

On Asymptotically Locally Hyperbolic Metrics with Negative Mass

Piotr T. Chruściel and Erwann Delay
SIGMA 19 (2023), 005, 15 pages [ abs
pdf ]

A Note on Coupled Dirac Operators

Nigel J. Hitchin
SIGMA 19 (2023), 003, 9 pages [ abs
pdf ]

Seven Concepts Attributed to SiméonDenis Poisson

Yvette KosmannSchwarzbach
SIGMA 18 (2022), 092, 13 pages [ abs
pdf ]
