projective variety是什么意思

网络释义

用法例句

Let X be a n dimensional projective variety,x be a fixed point in X,and let C_t(X,_X(1)) be the set of rational curves C of degree t passing through x in X,p_t(X)=dimC_t(X,_X(1)) for any positive integer.

设X是n维射影代数簇,取定X中一点x,设Ct(X,X(1))表示X中的过x点的t次有理曲线的集合,pt(X)=d imCt(X,X(1))。

On Small Contraction Maps of Projective Varieties Odd Dimensional;

关于奇数维射影代数簇的小收缩态射的研究

Structure of the Minimal Dimensional Exceptional Locus of Small Contraction over Projective Varieties of Odd Dimension;

奇维数射影代数簇的小收缩态射的极小维例外集的结构

Study on Nef-Value Morphisms of Higher Dimensional Projective Varieties;

关于高维代数簇的nef-值态射的研究

Flip of Small Contraction on Odd-dimensional Projective Variety;

奇维数代数簇上的小收缩映射翻转的存在性

Study on the Existion of the Flip of Contraction of Higher Dimensional Projective Algebraic Varieties;

对高维代数簇收缩映射翻转存在性的研究

electron-photon shower counter

电子光子簇射计数器

nonsingular irreducible projective varieties

非奇异不可约射影簇

The Generic Finiteness of the m-canonical Map for 3-folds of General Type;

一般型三维代数簇上的m-典范映射的一般有限性

Most of the reflectors are clustered close to the lunar equator.

大多数反射镜都簇集在月球赤道附近。

Some Researches on Piecewise Algebraic Curves and Piecewise Algebraic Varieties;

分片代数曲线与分片代数簇的若干研究

Study of Energy Response Nonlinearity of BSC at BES

北京谱仪桶部簇射计数器能量响应特性研究

Working Gas Study for End Cap Shower Counter of Beijing Spectrometer

北京谱仪端盖簇射计数器工作气体的研究

The influence on the radiation characteristics of an amorphous nanocluster by introducing photonic crystals

光子晶体对非晶纳米团簇辐射特性的影响

Some Researches on Piecewise Algebraic Curves, Piecewise Algebraic Varieties, and Piecewise Semialgebraic Sets;

分片代数曲线、分片代数簇与分片半代数集的某些问题研究

The Application of a Theorem of Linear Algebra in Projective Geometry;

探讨线性代数的一个定理在射影几何中的应用

SOME NEW PROPERTIES OF ALGEBRAIC CURVES AND HYPERSURFACES IN PROJECTIVE SPACE

射影空间中代数曲线与超曲面的一些新的性质

Researches on Multivariate Spline, Multivariate Weak Spline and Piecewise Algebraic Variety;

多元样条、弱样条及分片代数簇若干问题研究

Some Researches on Approximate Implicitization and Piecewise Algebraic Varieties;

近似隐式化和分片代数簇某些问题的研究