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Related papers: Generic fibrations around multiple fibers

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In this article, we generalize the results discussed in [arXiv:1004.3762] by introducing a genus to generic fibers of Lefschetz fibrations. That is, we give families of relations in the mapping class groups of genus-1 surfaces with…

Geometric Topology · Mathematics 2023-01-02 Hakho Choi

We construct three new families of fibrations $\pi : S \to B$ where $S$ is an algebraic complex surface and $B$ a curve that violate Xiao's conjecture relating the relative irregularity and the genus of the general fiber. The fibers of…

Algebraic Geometry · Mathematics 2015-06-30 Alberto Albano , Gian Pietro Pirola

We consider fibrations by affine lines on smooth affine surfaces obtained as complements of smooth rational curves $B$ in smooth projective surfaces $X$ defined over an algebraically closed field of characteristic zero. We observe that…

Algebraic Geometry · Mathematics 2022-05-31 Adrien Dubouloz

We study certain types of piecewise smooth Lagrangian fibrations of smooth symplectic manifolds, which we call stitched Lagrangian fibrations. We extend the classical theory of action-angle coordinates to these fibrations by encoding the…

Symplectic Geometry · Mathematics 2009-08-13 R. Castano-Bernard , D. Matessi

In this paper we introduce a new way of displacing Lagrangian fibers in toric symplectic manifolds, a generalization of McDuff's original method of probes. Extended probes are formed by deflecting one probe by another auxiliary probe. Using…

Symplectic Geometry · Mathematics 2014-02-20 Miguel Abreu , Matthew Strom Borman , Dusa McDuff

Initiated by Gromov, the study of holomorphic curves in symplectic manifolds has been a powerfull tool in symplectic topology, however the moduli space of holomorphic curves is often very difficult to find. A common technique is to study…

Symplectic Geometry · Mathematics 2007-05-23 Brett Parker

In this paper, we describe a new surprising example of a fibration of the Clifford torus S3 x S3 in the 7-sphere by great 3-spheres, which is fiberwise homogeneous but whose fibers are not parallel to one another. In particular it is not…

Differential Geometry · Mathematics 2014-07-21 Haggai Nuchi

We characterize regularity of Lagrangian submanifolds in Weinstein Lefschetz fibrations, establishing a conjecture of Giroux and Pardon. Our main result is the Weinstein analogue of a closed symplectic Lefschetz pencil result of Auroux,…

Symplectic Geometry · Mathematics 2025-10-21 Joseph Breen , Agniva Roy , Luya Wang

Four-folds with trivial canonical bundles are divided into six classes according to their holonomy group. We consider examples that are fibred by abelian surfaces over the projective plane. We construct such fibrations in five of the six…

Algebraic Geometry · Mathematics 2015-12-01 Justin Sawon

We study a natural generalization of inverse systems of finite regular covering spaces. A limit of such a system is a fibration whose fibres are profinite topological groups. However, as shown in a previous paper (Conner-Herfort-Pavesic:…

Algebraic Topology · Mathematics 2019-01-09 Gregory R. Conner , Wolfgang Herfort , Petar Pavešić

Exploiting the affinity between stable generalized complex structures and symplectic structures, we explain how certain constructions coming from symplectic geometry can be performed in the generalized complex setting. We introduce…

Differential Geometry · Mathematics 2025-11-12 Lorenzo Sillari

We conclude the multiple fibration problem for closed orientable Seifert three-orbifolds, namely the determination of all the inequivalent fibrations that such an orbifold may admit. We treat here geometric orbifolds with geometries…

Geometric Topology · Mathematics 2023-02-14 Oliviero Malech , Mattia Mecchia , Andrea Seppi

We provide an explicit desingularization and study the resulting fiber geometry of elliptically fibered fourfolds defined by Weierstrass models admitting a split A_4 singularity over a divisor of the discriminant locus. Such varieties are…

High Energy Physics - Theory · Physics 2013-09-11 Mboyo Esole , Shing-Tung Yau

Integral symplectic 4-manifolds may be described in terms of Lefschetz fibrations. In this note we give a formula for the signature of any Lefschetz fibration in terms of the second cohomology of the moduli space of stable curves. As a…

Symplectic Geometry · Mathematics 2014-11-11 Ivan Smith

We carry out a systematic study of a class of 6D F-theory models and associated Calabi-Yau threefolds that are constructed using base surfaces with a generalization of toric structure. In particular, we determine all smooth surfaces with a…

High Energy Physics - Theory · Physics 2015-04-21 Gabriella Martini , Washington Taylor

We show that under appropriate hypotheses, a plumbing of symplectic surfaces in a symplectic 4-manifold admits strongly convex neighborhoods. Moreover the neighborhoods are Lefschetz fibered with an easily-described open book on the…

Symplectic Geometry · Mathematics 2011-11-23 David Gay , Thomas E. Mark

We introduce an alternative way of constructing continuous flexible tubes and tubular structures based on a discrete, semi-discrete and smooth construction of surfaces known as T-hedra in the discrete case and profile-affine surfaces in the…

Differential Geometry · Mathematics 2023-01-25 Kiumars Sharifmoghaddam , Rupert Maleczek , Georg Nawratil

We discuss the most general condition under which a singular local tube fibration exists. We give an application to composition of map germs.

Algebraic Geometry · Mathematics 2023-07-04 Ying Chen , Mihai Tibăr

In this paper, we develop the theory for classifying all the geometric fibrations of compact, connected, flat $n$-orbifolds, over a 1-orbifold, up to affine equivalence. We apply our classification theory to classify all the geometric…

Geometric Topology · Mathematics 2020-05-08 John G. Ratcliffe , Steven T. Tschantz

The study of fibrations of the target manifolds of string/M/F-theories has provided many insights to the dualities among these theories or even as a tool to build up dualities since the work of Strominger, Yau, and Zaslow on the Calabi-Yau…

High Energy Physics - Theory · Physics 2007-05-23 Chien-Hao Liu