发布求助
文献互助 智能选刊 最新文献

Russian Academy of Sciences. Izvestiya Mathematics最新文献

筛选
英文 中文
ALGEBRAIC CYCLES ON A REAL ALGEBRAIC GM-MANIFOLD AND THEIR APPLICATIONS 实代数gm流形上的代数循环及其应用
Russian Academy of Sciences. Izvestiya Mathematics Pub Date : 1900-01-01 DOI: 10.1070/IM1994v043n01ABEH001554
Vyacheslav A Krasnov
{"title":"ALGEBRAIC CYCLES ON A REAL ALGEBRAIC GM-MANIFOLD AND THEIR APPLICATIONS","authors":"Vyacheslav A Krasnov","doi":"10.1070/IM1994v043n01ABEH001554","DOIUrl":"https://doi.org/10.1070/IM1994v043n01ABEH001554","url":null,"abstract":"For an algebraic cycle on a real algebraic GM-manifold , the relationship between the homology classes and is studied. It is shown that similar relations hold for smooth cycles on a GM-surface. The results are applied to prove congruences for the Euler characteristic of the set .","PeriodicalId":158473,"journal":{"name":"Russian Academy of Sciences. Izvestiya Mathematics","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128993178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
RANDOM PROCESSES GENERATED BY A HYPERBOLIC SEQUENCE OF MAPPINGS. I 由映射的双曲序列生成的随机过程。我
Russian Academy of Sciences. Izvestiya Mathematics Pub Date : 1900-01-01 DOI: 10.1070/IM1995v044n02ABEH001596
V I Bakhtin
{"title":"RANDOM PROCESSES GENERATED BY A HYPERBOLIC SEQUENCE OF MAPPINGS. I","authors":"V I Bakhtin","doi":"10.1070/IM1995v044n02ABEH001596","DOIUrl":"https://doi.org/10.1070/IM1995v044n02ABEH001596","url":null,"abstract":"For a sequence of smooth mappings of a Riemannian manifold, which is a nonstationary analogue of a hyperbolic dynamical system, a compatible sequence of measures carrying one into another under the mappings is constructed. A geometric interpretation is given for these measures, and it is proved that they depend smoothly on the parameter. The central limit theorem is proved for a sequence of smooth functions on the manifold with respect to these measures; it is shown that the correlations decrease exponentially, and an exponential estimate like Bernstein's inequality is obtained for probabilities of large deviations.","PeriodicalId":158473,"journal":{"name":"Russian Academy of Sciences. Izvestiya Mathematics","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127309343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 28
PROJECTIVE BUNDLES, MONOIDAL TRANSFORMATIONS, AND DERIVED CATEGORIES OF COHERENT SHEAVES 射影束、单轴变换和相干束的派生范畴
Russian Academy of Sciences. Izvestiya Mathematics Pub Date : 1900-01-01 DOI: 10.1070/IM1993v041n01ABEH002182
Dmitri Orlov
{"title":"PROJECTIVE BUNDLES, MONOIDAL TRANSFORMATIONS, AND DERIVED CATEGORIES OF COHERENT SHEAVES","authors":"Dmitri Orlov","doi":"10.1070/IM1993v041n01ABEH002182","DOIUrl":"https://doi.org/10.1070/IM1993v041n01ABEH002182","url":null,"abstract":"This paper studies derived categories of coherent sheaves on varieties that are obtained by projectivization of vector bundles and by monoidal transformations. Conditions for the existence of complete exceptional sets in such categories are derived; they give new examples of varieties on which exceptional sets exist.","PeriodicalId":158473,"journal":{"name":"Russian Academy of Sciences. Izvestiya Mathematics","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114359757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 332
INVARIANTS OF THE SMOOTH STRUCTURE OF AN ALGEBRAIC SURFACE ARISING FROM THE DIRAC OPERATOR 由狄拉克算子引起的代数曲面光滑结构的不变量
Russian Academy of Sciences. Izvestiya Mathematics Pub Date : 1900-01-01 DOI: 10.1070/IM1993v040n02ABEH002167
V Ya Pidstrigach, A N Tyurin
{"title":"INVARIANTS OF THE SMOOTH STRUCTURE OF AN ALGEBRAIC SURFACE ARISING FROM THE DIRAC OPERATOR","authors":"V Ya Pidstrigach, A N Tyurin","doi":"10.1070/IM1993v040n02ABEH002167","DOIUrl":"https://doi.org/10.1070/IM1993v040n02ABEH002167","url":null,"abstract":"We construct invariants of the smooth structure of an algebraic surface in terms of coupled Dirac operators. The invariants allow us to distinguish between del Pezzo surfaces and fake del Pezzo surfaces by their smooth structure.","PeriodicalId":158473,"journal":{"name":"Russian Academy of Sciences. Izvestiya Mathematics","volume":"376 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129095683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 49
TWISTORS AND -STRUCTURES 捻线器和结构
Russian Academy of Sciences. Izvestiya Mathematics Pub Date : 1900-01-01 DOI: 10.1070/IM1993v040n01ABEH001851
D V Alekseevskiĭ, M M Graev
{"title":"TWISTORS AND -STRUCTURES","authors":"D V Alekseevskiĭ, M M Graev","doi":"10.1070/IM1993v040n01ABEH001851","DOIUrl":"https://doi.org/10.1070/IM1993v040n01ABEH001851","url":null,"abstract":"The authors distinguish a class of twistor spaces that are associated, following Bérard-Bergery and Ochiai, with -structures on even-dimensional manifolds and connections in . It is assumed that is a complex totally geodesic submanifold of the affine symmetric space . This class includes all the basic examples of twistor spaces fibered over an even-dimensional base. The integrability of the canonical almost complex structure and the holomorphy of the canonical distribution in are studied in terms of some natural -structure with a connection on the manifold . Some examples are also treated.","PeriodicalId":158473,"journal":{"name":"Russian Academy of Sciences. Izvestiya Mathematics","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123875705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
TOPOLOGY OF THE SPACE OF NONDEGENERATE CURVES 非退化曲线空间的拓扑结构
Russian Academy of Sciences. Izvestiya Mathematics Pub Date : 1900-01-01 DOI: 10.1070/IM1994v043n02ABEH001565
M Z Shapiro
{"title":"TOPOLOGY OF THE SPACE OF NONDEGENERATE CURVES","authors":"M Z Shapiro","doi":"10.1070/IM1994v043n02ABEH001565","DOIUrl":"https://doi.org/10.1070/IM1994v043n02ABEH001565","url":null,"abstract":"A curve on a sphere or on a projective space is called nondegenerate if it has a nondegenerate moving frame at every point. The number of homotopy classes of closed nondegenerate curves immersed in the sphere or projective space is computed. In the case of the sphere Sn, this turns out to be 4 for odd n≥3 and 6 for even n≥2; in the case of the projective space Pn, 10 for odd n≥3 and 3 for even n≥2.","PeriodicalId":158473,"journal":{"name":"Russian Academy of Sciences. Izvestiya Mathematics","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115837093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
CONSTRUCTIVE DESCRIPTION OF CERTAIN CLASSES OF FUNCTIONS ON QUASISMOOTH ARCS 拟光滑弧上某类函数的构造描述
Russian Academy of Sciences. Izvestiya Mathematics Pub Date : 1900-01-01 DOI: 10.1070/IM1995v044n01ABEH001589
V V Andrievskiĭ, V V Maĭmeskul
{"title":"CONSTRUCTIVE DESCRIPTION OF CERTAIN CLASSES OF FUNCTIONS ON QUASISMOOTH ARCS","authors":"V V Andrievskiĭ, V V Maĭmeskul","doi":"10.1070/IM1995v044n01ABEH001589","DOIUrl":"https://doi.org/10.1070/IM1995v044n01ABEH001589","url":null,"abstract":"Three classes of functions are introduced, corresponding to known results in the theory of uniform polynomial approximation of functions on arcs in the complex plane. The structural properties of functions in these classes are described from a unified point of view, which allows one to understand more fully their nature and the differences between them.","PeriodicalId":158473,"journal":{"name":"Russian Academy of Sciences. Izvestiya Mathematics","volume":"144 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116562611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
GRAPHS WITH PROJECTIVE SUBORBITS. CASES OF SMALL CHARACTERISTICS. I 具有投影子轨道的图。案例小的特点。我
Russian Academy of Sciences. Izvestiya Mathematics Pub Date : 1900-01-01 DOI: 10.1070/IM1995v045n02ABEH001645
V I Trofimov
{"title":"GRAPHS WITH PROJECTIVE SUBORBITS. CASES OF SMALL CHARACTERISTICS. I","authors":"V I Trofimov","doi":"10.1070/IM1995v045n02ABEH001645","DOIUrl":"https://doi.org/10.1070/IM1995v045n02ABEH001645","url":null,"abstract":"This article is devoted to a positive solution, announced earlier by the author, of the question of boundedness of orders of stabilizers of vertices of connected finite symmetric graphs with projective suborbits. The case when the characteristic of the field is 3 and the automorphism group of the graph acts intransitively on its 3-arcs is considered. (The case when the characteristic of the field is 3 and the group acts transitively on the 3-arcs of the graph will be considered in Part II of this paper.) In parallel, some cases of a field of characteristic 2 are studied.","PeriodicalId":158473,"journal":{"name":"Russian Academy of Sciences. Izvestiya Mathematics","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126461253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信