搜索结果: 1-15 共查到“cardinal”相关记录15条 . 查询时间(0.421 秒)
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：On cancellation laws in cardinal arithmetic without the axiom of choice
选择公理 基数算术 取消定律
2023/4/17
We survey known results concerning cancellation laws in cardinal arithmetic without the axiom of choice. These results include the cancellation law for Dedekind finite cardinals in cardinal addition a...
Experience with the Cardinal Coordinate System Contributes to the Precision of Cognitive Maps
cardinal coordinate system cognitive map entorhinal cortex
2017/8/29
The coordinate system has been proposed as a fundamental and cross-culturally used spatial representation, through which people code location and direction information in the environment. Here we prov...
Open colorings,the continuum and the second uncountable cardinal
Open colorings the continuum second uncountable cardinal
2015/8/17
The purpose of this article is to analyze the cardinality of the continuum using Ramsey theoretic statements about open colorings or “open coloring axioms.” In particular I will show that the conjunct...
PROPER FORCING,CARDINAL ARITHMETIC,AND UNCOUNTABLE LINEAR ORDERS
PROPER FORCING CARDINAL ARITHMETIC UNCOUNTABLE LINEAR ORDERS
2015/8/17
In this paper I will communicate some new consequences of the Proper Forcing Axiom. First, the Bounded Proper Forcing Axiom implies that there is a well ordering of R which is Σ1-definable in (H(ω2), ...
QUALITATIVE SPATIAL REASONING ABOUT INTERNAL CARDINAL DIRECTION RELATIONS
Qualitative Spatial Reasoning Internal Cardinal Direction Relation External Cardinal Direction Relation Distance Relation Topological Relation Composition Table
2015/8/10
A class of novel spatial relation, internal cardinal direction (ICD) relation, is introduced and discussed. Applying ICD-9 model, the characteristics and the simplification rule of ICD relations are d...
Cardinal numerals in rural sign languages:Approaching cross-modal typology
cardinal numerals morphology numeral bases numerals rural sign languages sign languages
2015/4/27
This article presents data on cardinal numerals in three sign languages from small-scale communities with hereditary deafness. The unusual features found in these data considerably extend the known ra...
CARDINAL DIRECTION RELATIONS QUERY MODELING BASED ON GEO-ONTOLOGY
Direction relations Query Model Digital gazetteer Spatial reasoning
2014/4/25
Direction relations, as an important spatial relationship, is simply expressed as object prosperity in traditional geo-ontology. The lacking of explicit specifications and reasoning rules of direction...
Linear Orderings and Powers of Characterizable Cardinal
Infinitary Logic Scott sentence Characterizable cardinals
2011/2/21
The current paper answers an open question of [5].We say that a countable modelMcharacterizes an infinite cardinal , if the Scott sentence ofMhas a model in cardinality , but no models in cardinalit...
An efficient nonlinear cardinal B-spline model for high tide forecasts at the Venice Lagoon
nonlinear cardinal B-spline model high tide forecasts Venice Lagoon
2009/11/9
An efficient class of nonlinear models, constructed using cardinal B-spline (CBS) basis functions, are proposed for high tide forecasts at the Venice lagoon. Accurate short term predictions of high ti...
Occurrence of star flowers in Cardinal (Vitis vinifera L.) cv.
Grape star flower genetic analysis RAPD cardinal
2010/9/10
Star flowers are flowers that differ from normal Vitis flowers in that the calyptra breaks open from the top like the flowers of most other species plants. This is the first report of the occurrence o...
Expressions of Cardinal Directions in Nilotic and in Ubangian Languages
Cardinal Directions Nilotic Ubangian Languages
2009/5/6
In the Nilotic and Ubangian languages expressions for cardinal directions have been created on the basis of a wide range of conceptual sources: primarily cosmological, geographical and atmospheric con...
Zeno's Paradoxes. A Cardinal Problem. 1. On Zenonian Plurality
Zeno's paradoxes cardinality continuum hypothesis
2008/4/15
In this paper the claim that Zeno's paradoxes have been solved is contested. Although "no one has ever touched Zeno without refuting him" (Whitehead), it will be our aim to show that, whatever it was ...
关于Cardinal L-样条的一些极值问题
2007/12/11
本文研究了Cardinal L-样条函数空间对一类可微函数类在$L^1(R)$尺度下的最佳逼近和最佳线性逼近,确定了这两类最佳逼近的精确值相等,并表明了Cardinal L-样条插值为最佳的线性逼近方法。
Cardinal-Hermite插值逼近
Sobolev空间 Cardinal-Hermite插值 逼近
2012/11/13
Sobolev空间的Cardinal样条逼近已有较多研究.在此研究了Sobolev空间的Cardinal-Hermite插值问题,构造了插值逼近算子,并利用插值算子对多项式的重构性质获得了逼近阶的估计.
Lipschitz空间的Cardinal样条逼近
Lipschitz空间 Cardinal样条 逼近
2012/11/13
给出了Lipschitz空间Lip(γ,Lp)利用多元Cardinal样条的逼近和刻画,给出了Cardinal样条逼近算子的Bernstein不等式以及K-泛函由逼近阶的控制不等式.