1976 ◽  
Vol 13 (2) ◽  
pp. 523-527 ◽  
Author(s):  
Z. Haba ◽  
A. A. Nowicki

2008 ◽  
Vol 20 (08) ◽  
pp. 951-978 ◽  
Author(s):  
ASAO ARAI ◽  
YASUMICHI MATSUZAWA

We develop a mathematical theory of time operators of a Hamiltonian with purely discrete spectrum. The main results include boundedness, unboundedness and spectral properties of them. In addition, possible connections of a time operator of H with regular perturbation theory are discussed.


Author(s):  
Paul Elliott

This chapter examines the post-millennial gangster film. It begins by differentiating between Gangster Heavy and Gangster Light. The chapter then describes how the protagonist of the post-millennial gangster film (with a few notable exceptions) comes not from the ranks of the Mafioso or the well-organised criminal fraternity but from the door of the nightclub or the big city back street. They are small-time operators or part of a close-knit street crew and unlike their more ethical forebears, their main source of income is drugs. Moreover, their on-screen violence is often more graphic and detailed. The post-millennial gangster film has in more recent years begun to examine street and knife crime, and the gangsters themselves have become ever younger, as the surrounding society seeks to come to terms with widely disseminated images of youth gangs and rioting. Thus, the chapter looks at the sons, daughters, and even grandchildren of gangsters and asks how they fit in with the story of British cinema. What emerges is a depiction of gang culture that is tinged with issues of class, race, and gender as British cinema seeks to represent a society shaped by changes in Government, socio-economics, and, as the first decade of the new millennium progressed, increasing anxieties over issues such as knife crime, immigration, and youth violence.


2019 ◽  
Vol 53 (2) ◽  
pp. 025301 ◽  
Author(s):  
K Nakatsugawa ◽  
T Fujii ◽  
A Saxena ◽  
S Tanda

2010 ◽  
Vol 43 (50) ◽  
pp. 505303 ◽  
Author(s):  
G C Hegerfeldt ◽  
J G Muga
Keyword(s):  

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