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Workshop on Structures in Enumerative Geometry
Workshop Structures in Enumerative Geometry
2017/12/20
The purpose of the workshop is to bring together specialists to work on understanding the many-faceted mathematical structures underlying problems in enumerative geometry. Topics represented at the wo...
第二届IMA非线性和相干结构会议（2nd IMA Conference on Nonlinearity and Coherent Structures）
第二届 IMA非线性和相干结构 会议
2017/4/24
Nonlinearity plays an important role in many fields of Science, Engineering and Technology.The aim of this conference is to bring together researchers working on aspects of nonlinear phenomena and to ...
INVOLUTIVE RATIONAL NORMAL STRUCTURES.
We prove that each overtwisted contact structure has knot types that are represented by
infinitely many distinct transverse knots all with the same self-linking number. In some cases, we can even cla...
Stable Hamiltonian structures in dimension three are supported by open books
Stable Hamiltonian structures dimension open books
2011/2/22
In dimension three, (cooriented) contact structures are closely related to open books via the following results, the rst due to Thurston-Winkelnkemper [8]and the other ones due to Giroux [6]:(1) Ever...
Singular open book structures from real mappings
Singular open book structures real mappings
2010/11/12
We prove extensions of Milnor's theorem for germs with nonisolated singularity and use them to find new classes of genuine real analytic mappings $\psi$ with positive dimensional singular locus $\Sin...
Degeneration of Kaehler structures and half-form quantization of toric varieties
Kaehler structures half-form quantization
2010/11/19
We study the half-form Kaehler quantization of a smooth symplectic toric manifold $(X,\omega)$, such that $[\omega/2\pi]-c_{1}(X)/2 \in H^{2}(X,{\mathbb{Z}})$ and is nonnegative. We define the half-f...
Let A be a Hopf algebra and H a coalgebra. We shall describe and classify up to an isomorphism all Hopf algebras E that factorize through A and H: that is E is a Hopf algebra such that A is a Hopf su...
Associative superalgebras with homogeneous symmetric structures
Associative superalgebras homogeneous symmetric structures
2010/11/19
A homogeneous symmetric structure on an associative superalgebra A is a non-degenerate, supersymmetric, homogeneous (i.e. even or odd) and associative bilinear form on A. In this paper, we show that ...
Extending Structures I: Unifying Crossed and Bicrossed Products
Extending Structures I Unifying Crossed Bicrossed Products
2010/11/12
Let H be a group. We define the concept of an extending structure of the group H which consists of a new algebraic structure (S, *) called H-group, two actions and a generalized cocycle satisfying so...
We introduce the Hausdorff measure for definable sets in an o-minimal structure, and prove the Cauchy-Crofton and co-area formulae for the o-minimal Hausdorff measure. We also prove that every defina...
In this paper we introduce a combinatorial framework which provides an interpretation of RNA pseudoknot structures as sampling paths of a Markov process. Our results give insight into the cross-serial...
Statistical structures on tangent bundles
statistical manifold, Norden metric tangent bundle vertical lift com-plete lift horizontal lift
2009/1/12
We study prolongations of statistical structures on manifolds to their tangent
bundles. We show that tangent bundles over flat statistical manifolds admit
natural almost complex statistical structur...
A Finite Difference Method for Studying Thermal Deformation in 3D Double-Layered Micro- Structures Exposed to Ultrashort-Pulsed Lasers
Finite Difference Thermal Deformation Ultrashort-Pulsed Lasers
2008/11/10
Ultrashort-pulsed lasers have been attracting worldwide interest in science and engineering. Studying the thermal deformation induced by ultrashort-pulsed lasers is important for preventing thermal da...
Community Structures of Networks
Networks graphs community structures clique partitioning problem graph partitioning problem linear programming integer linear programming food webs Zachary's karate club
2014/6/3
We present an approach to studying the community structures of networks by using linear programming (LP). Starting with a network in terms of (a) a collection of nodes and (b) a collection of edges co...