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A proof of Thurston's topological characterization of rational functions
Thurston's topological characterization rational functions
2015/8/26
The criterion proved in this paper was stated by Thurston in November 1982. Thurston lectured on its proof on several occasions, notably at the NSF summer conference inDuluth, 1983, where one of the a...
Topological finiteness for edge-vertex enumeration
Topological finiteness edge-vertex enumeration
2015/8/25
The number of PL-homeomorphism types of combinatorial manifolds in a fixed dimension with an upper bound on g2 is finite.
One of the foundations of oriented matroid theory is the topological representation theorem of Folkman and Lawrence [8]. It says that an oriented (simple) matroid can be realized uniquely as an arrang...
An interesting example of a compact Hausdorff space that is often presented in beginning courses in topology is the unit square [0, 1]× [0, 1] with the lexicographic order topology. The closed subspac...
针对实际工程中存在的多工况、载荷不确定的情况, 研究了概率方法表示载荷不确定性的多工况线性结构稳健拓扑优化设计方法. 基于线弹性位移叠加原理给出了多工况、不确定性条件下结构柔度均值与方差的计算方法, 并在此基础上推导了结构灵敏度公式. 对于承受M个工况的二维结构, 根据每个工况下的柔度均值和方差以及灵敏度信息求出其结构整体的均值、方差及灵敏度信息;而结构在单工况n个不确定载荷下的均值方差及灵敏度信...
An evolutionary behavioral model for decision making
Intelligent and autonomous agents adaptive behavior automated planning
2015/7/22
For autonomous agents the problem of deciding what to do next becomes increasingly complex when acting in unpredictable and dynamic environments pursuing multiple and possibly conflicting goals. One o...
Geo-information Management
Geo-information management contextual modelling hierarchical identification
2015/7/6
The contribution deals with the contextual design of spatial data for the purposes of the regional development, land management and
government, describes the role of remote sensing data and contextua...
Aspects of Data Modeling of Fused Surfaces with Planimetric Data in a Topographic Geodatabase
Raster TIN Accuracy
2015/7/6
As a result of building a topological surfaced geodatabase for the test area, the paper discuses the investigation of modeling 3D
surface data, and its fusion with other planinmetric modeled data, an...
Representation of a 3-d City Model in Spatial Object-relational Databases
Databases GIS Modeling
2015/7/6
Three-dimensional city models become more and more important in many GIS applications. Examples are, apart from simple
visualization, city and land use planning as well as telecommunication planning ...
A spatiotemporal data model consists of attributes or classes, operations, and consistency constraints. Various models have been
proposed by the geographic information system (GIS) community. These m...
Topological bifurcation theory : old and new Jean Mawhin Universite Catholique de Louvain
Topological bifurcation theory Jean Mawhin Universite Catholique de Louvain
2015/4/3
Topological bifurcation theory : old and new Jean Mawhin Universite Catholique de Louvain.
Operadic formulation of topological vertex algebras and Gerstenhaber or Batalin-Vilkovisky algebras
Operadic formulation topological vertex algebras Gerstenhaber Batalin-Vilkovisky algebras
2015/3/25
We give the operadic formulation of (weak, strong) topological vertex algebras, which are variants of topological vertex operator algebras studied recently by Lian and Zuckerman. As an application, we...
Higher-dimensional category theory is the study of n-categories, operads, braided monoidal categories, and other such exotic structures. It draws its inspiration from areas as diverse as topology, qua...
On Topological String Theory.
Generalized complex geometry and topological sigma-models
complex geometry topological sigma-models
2015/3/19
Generalized complex geometry and topological sigma-models.