collude 发表于 2025-3-21 17:10:34
书目名称An Invitation to Hypoelliptic Operators and Hörmander‘s Vector Fields影响因子(影响力)<br> http://impactfactor.cn/if/?ISSN=BK0155638<br><br> <br><br>书目名称An Invitation to Hypoelliptic Operators and Hörmander‘s Vector Fields影响因子(影响力)学科排名<br> http://impactfactor.cn/ifr/?ISSN=BK0155638<br><br> <br><br>书目名称An Invitation to Hypoelliptic Operators and Hörmander‘s Vector Fields网络公开度<br> http://impactfactor.cn/at/?ISSN=BK0155638<br><br> <br><br>书目名称An Invitation to Hypoelliptic Operators and Hörmander‘s Vector Fields网络公开度学科排名<br> http://impactfactor.cn/atr/?ISSN=BK0155638<br><br> <br><br>书目名称An Invitation to Hypoelliptic Operators and Hörmander‘s Vector Fields被引频次<br> http://impactfactor.cn/tc/?ISSN=BK0155638<br><br> <br><br>书目名称An Invitation to Hypoelliptic Operators and Hörmander‘s Vector Fields被引频次学科排名<br> http://impactfactor.cn/tcr/?ISSN=BK0155638<br><br> <br><br>书目名称An Invitation to Hypoelliptic Operators and Hörmander‘s Vector Fields年度引用<br> http://impactfactor.cn/ii/?ISSN=BK0155638<br><br> <br><br>书目名称An Invitation to Hypoelliptic Operators and Hörmander‘s Vector Fields年度引用学科排名<br> http://impactfactor.cn/iir/?ISSN=BK0155638<br><br> <br><br>书目名称An Invitation to Hypoelliptic Operators and Hörmander‘s Vector Fields读者反馈<br> http://impactfactor.cn/5y/?ISSN=BK0155638<br><br> <br><br>书目名称An Invitation to Hypoelliptic Operators and Hörmander‘s Vector Fields读者反馈学科排名<br> http://impactfactor.cn/5yr/?ISSN=BK0155638<br><br> <br><br>conformity 发表于 2025-3-21 23:00:57
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,Geometry of Hörmander’s Vector Fields,, and some of its physical meanings which have been known for a long time. We then pass to survey some ideas and fundamental results about the metric induced by a system of vector fields, which are contained in some papers of the middle 1980’s. This area is by a now an independent field of study, bumisanthrope 发表于 2025-3-22 10:05:21
,Beyond Hörmander’s Operators,0’s. As we will see, most of these developments have . the class of operators under study, passing from classical Hörmander’s operators to operators “structured on Hörmander’s vector fields”, in various senses, or operators also containing nonsmooth ingredients. In the end, most of these new kinds oArthropathy 发表于 2025-3-22 13:59:06
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Book 2014have been intensively studied since the late 1960s and are still an active field of research. This text provides the reader with a general overview of the field, with its motivations and problems, some of its fundamental results, and some recent lines of development..ARCHE 发表于 2025-3-22 22:39:24
2191-8198 e research in this area, ranging on several different discip.Hörmander‘s operators are an important class of linear elliptic-parabolic degenerate partial differential operators with smooth coefficients, which have been intensively studied since the late 1960s and are still an active field of researPLE 发表于 2025-3-23 01:22:55
Sabine Junginger,Caroline Paulick-Thiel operators with real coefficients, Hörmander’s proved in 1967 a fundamental result which opened the way to the study of what are now called “Hörmander’s operators”. The chapter describes this circle of ideas.extinct 发表于 2025-3-23 07:26:52
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