منابع مشابه
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Enterprise applications, that is large and long-lived applications, require persistence. Conventional approaches to persistence suffer from various deficiencies since they pass a considerable amount of the persistence workload on the programmer. Programmers have to transfer data to and from storage devices and have to provide mappings from the programming data structures to the storage device d...
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We propose a generic framework to obtain certain types of contracted and centrally extended algebras. This is based on the existence of quadratic algebras (reflection algebras and twisted Yangians), naturally arising in the context of boundary integrable models. A quite old paradox concerning the“expansion” of the E2 algebra into sl2 is resolved using the representation theory of the aforementi...
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Canonical transformation (CT) theory describes dynamic correlation in multireference systems with large active spaces. Here we discuss CT theory's intruder state problem and why our previous approach of overlap matrix truncation becomes infeasible for sufficiently large active spaces. We propose the use of strongly and weakly contracted excitation operators as alternatives for dealing with intr...
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ژورنال
عنوان ژورنال: The Mathematical Gazette
سال: 1907
ISSN: 0025-5572,2056-6328
DOI: 10.2307/3605254