Stable generalized complex structures

GR Cavalcanti, M Gualtieri - Proceedings of the London …, 2018 - Wiley Online Library
A stable generalized complex structure is one that is generically symplectic but degenerates
along a real codimension two submanifold, where it defines a generalized Calabi–Yau …

Unobstructed Deformations of Generalized Complex Structures Induced by Logarithmic Symplectic Structures and Logarithmic Poisson Structures

R Goto - Geometry and Topology of Manifolds: 10th China …, 2016 - Springer
We shall introduce the notion of C^ ∞ C∞ logarithmic symplectic structures on a
differentiable manifold which is an analog of the one of logarithmic symplectic structures in …

Geometric structures and Lie algebroids

RL Klaasse - arXiv preprint arXiv:1712.09560, 2017 - arxiv.org
In this thesis we study geometric structures from Poisson and generalized complex geometry
with mild singular behavior using Lie algebroids. The process of lifting such structures to …

Self-crossing stable generalized complex structures

GR Cavalcanti, RL Klaasse, A Witte - arXiv preprint arXiv:2004.07559, 2020 - arxiv.org
We extend the notion of (smooth) stable generalized complex structures to allow for an
anticanonical section with normal self-crossing singularities. This weakening not only allows …

Fibrations and stable generalized complex structures

GR Cavalcanti, RL Klaasse - Proceedings of the London …, 2018 - Wiley Online Library
A generalized complex structure is called stable if its defining anticanonical section vanishes
transversally, on a codimension‐two submanifold. Alternatively, it is a zero elliptic residue …

On the number of type change loci of a generalized complex structure

R Torres, J Yazinski - Letters in Mathematical Physics, 2014 - Springer
In this note, we describe a procedure to construct generalized complex structures whose
type change locus has arbitrarily many path components on products of the circle with a …

Fibrations in semitoric and generalized complex geometry

GR Cavalcanti, RL Klaasse, A Witte - Canadian Journal of …, 2023 - cambridge.org
This paper studies a class of singular fibrations, called self-crossing boundary fibrations,
which play an important role in semitoric and generalized complex geometry. These singular …

Classification of boundary Lefschetz fibrations over the disc

S Behrens, GR Cavalcanti, RL Klaasse - arXiv preprint arXiv:1706.09207, 2017 - arxiv.org
We show that a four-manifold admits a boundary Lefschetz fibration over the disc if and only
if it is diffeomorphic to $ S^ 1\times S^ 3\# n\overline {\mathbb {C} P^ 2} $, $\# m\mathbb {C} …

New geometric structures on 3-manifolds: surgery and generalized geometry

J Porti, R Rubio - arXiv preprint arXiv:2402.12471, 2024 - arxiv.org
Cosymplectic and normal almost contact structures are analogues of symplectic and
complex structures that can be defined on 3-manifolds. Their existence imposes strong …

Generalized Luttinger surgery and other cut-and-paste constructions in generalized complex geometry

L Sillari - Journal of Geometry and Physics, 2023 - Elsevier
Exploiting the affinity between stable generalized complex structures and symplectic
structures, we explain how certain constructions coming from symplectic geometry can be …