湖南科技大学学报(自然科学版)
湖南科技大學學報(自然科學版)
호남과기대학학보(자연과학판)
JOURNAL OF HUNAN UNIVERSITY OF SCIENCE & TECHNOLOGY(NATURAL SCIENCE EDITION)
2014年
2期
115-120
,共6页
加权射影空%加权blowup%陈-阮上同调
加權射影空%加權blowup%陳-阮上同調
가권사영공%가권blowup%진-원상동조
weighted projective space%weighted blowup%Chen-Ruan cohomology
orbifold是带有奇点结构的的广义流形,其具有整体的拓扑结构和局部的奇性结构.以加权射影空间CPn (A)为例子,利用代数几何的方法,对orbifold的奇点进行加权blowup.分析blowup之后其所有奇点集,即sector的变化.利用abelian orbifold的de Rham模型,计算所有sector的奇异上同调.根据阶转移数的变化,计算新的orbifold即Bl(CPn (A))陈-阮上同调.最后通过对比得到blowup前后陈-阮上同调的关系.
orbifold是帶有奇點結構的的廣義流形,其具有整體的拓撲結構和跼部的奇性結構.以加權射影空間CPn (A)為例子,利用代數幾何的方法,對orbifold的奇點進行加權blowup.分析blowup之後其所有奇點集,即sector的變化.利用abelian orbifold的de Rham模型,計算所有sector的奇異上同調.根據階轉移數的變化,計算新的orbifold即Bl(CPn (A))陳-阮上同調.最後通過對比得到blowup前後陳-阮上同調的關繫.
orbifold시대유기점결구적적엄의류형,기구유정체적탁복결구화국부적기성결구.이가권사영공간CPn (A)위례자,이용대수궤하적방법,대orbifold적기점진행가권blowup.분석blowup지후기소유기점집,즉sector적변화.이용abelian orbifold적de Rham모형,계산소유sector적기이상동조.근거계전이수적변화,계산신적orbifold즉Bl(CPn (A))진-원상동조.최후통과대비득도blowup전후진-원상동조적관계.
Orbifold is a generalized manifold,which is a topological space with of singular points.The weighted projective space CPn (A)was blown up at a singular point,using the method of algebraic geometry.and the change of all twisted sectors and degree was studied shifting numbers after blowing up.The Chen -Ruan cohomology ring of the blowup was calculated and then the difference was showed from the Chen -Ruan cohomology ring of to the one of CPn(A)its blowup.