منابع مشابه
Characterization of PF rings by the Finite Topology on duals of R Modules
Abstract : In this paper we study the properties of the finite topology on the dual of a module over an arbitrary ring. We aim to give conditions when certain properties of the field case can still be found here. Investigating the correspondence between the closed submodules of the dual M∗ of a module M and the submodules of M , we prove some characterizations of PF rings: the up stated corresp...
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در این پایان نامه، در ابتدا برای مدول ها روی دامنه های پروفر شرایط معادل به دست آورده ایم و خواصی از ددکیند مدول ها روی دامنه های پروفر مشخص کرده ایم. در ادامه برای ددکیند مدول های با تولید متناهی روی حلقه های به طور صحیح بسته شرایط معادل به دست آورده ایم و ددکیند مدول های ضربی را مشخص کرده ایم. گزاره هایی در مورد بعد ددکیند مدول ها بیان کرده ایم. در پایان، قضایای lying over و going down را برا...
15 صفحه اولDevelopment and Operational Status of Pf-ring and Pf-ar
The Photon Factory storage ring (PF-ring) and the Photon Factory advanced ring (PF-AR) continue a stable user operation as a synchrotron radiation source. The MTBF of the PF-ring has been kept at high around 200 h. At the PF-ring, a top-up operation started in April 2009. A rapid-polarization-switching device consisting of tandem polarizing undulators and a new injection system using a pulsed s...
متن کاملThe PF STAR Children’s
This paper describes the corpus of recordings of children’s speech which was collected as part of the EU FP5 PF STAR project. The corpus contains more than 60 hours of speech, including read and imitated native-language speech in British English, German and Swedish, read and imitated non-nativelanguage English speech from German, Italian and Swedish children, and native-language spontaneous and...
متن کاملImprovement to the PF
The PF algorithm, discussed in HD92], computes changes to a materialized view when the underlying base relations change. The algorithm considers each changed base relation in turn and propagates the changes to the derived relations. We propose ways of making this propagation process eecient by exploiting stratiication Ull89] of programs and by storing and reusing some of the information derived...
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ژورنال
عنوان ژورنال: Tohoku Mathematical Journal
سال: 1971
ISSN: 0040-8735
DOI: 10.2748/tmj/1178242640