We study the cohomology of reflexive rank 2 sheaves on smooth projective threefolds. Applications are given to the moduli space of reflexive sheaves.

that gained speed in the nineteenth and twentieth century in the western world, a typical modernist practice of technology politics emerged. The concepts of modernization and modernity need to be handled with care, of course, since their use may easily lead to an identification with modernizers, actors who have invented and used these labels to advance their cause. In addition, using these conc...

This article focuses on individual reflections ‘ngevent’, which later became ‘slang’ among youths who represent their existence in seeking experiences outside of the campus as volunteers art and cultural events during status students Yogyakarta. study is based a phenomenological study, uses in-depth interviews, participant observation, document studies data collection carried out after selectin...

Let $R$ be a commutative Noetherian ring. We prove that  over a local ring $R$ every finitely generated $R$-module $M$ of finite Gorenstein projective dimension has a Gorenstein projective cover$varphi:C rightarrow M$ such that $C$ is finitely generated and the projective dimension of $Kervarphi$ is finite and $varphi$ is surjective.

THE VALUABLE EMPHASIS ON MODERNITY in colonial and postcolonial African studies has profoundly divided precolonial African history from what comes after. But the depth and complexity of African aspirations for moral community and the forms of collective action they inspire, often in the face of severe material constraints, exceed the explanatory power of narratives of modernity oriented toward ...

Abstract. Let δ(P) be the δ-vector of a reflexive polytope P ⊂ R of dimension d and δ(P) the δ-vector of the dual polytope P ⊂ R. In general, δ(P) = δ(P) does not hold. In this paper, we give a higher-dimensional construction of a reflexive polytope whose δ-vector equals the δ-vector of the dual polytope. In particular, we consider the case that the reflexive polytope and the dual polytope are ...

Some workers have suggested that a hypothetical genetic mutation in an African population less than 100,000 years ago led to a cascade of neurological changes in the human brain that culminated in the appearance of modern language. Language then triggered the socioeconomic and cognitive changes we associate with behavioral modernity and Africans, armed with behavioral modernity, then spread out...

OBJECTIVES Good ventilation is more important in hospitals than in many other buildings. The objective of this study was to evaluate the effect of the condition, performance and modernity of ventilation systems on the perceived indoor air quality (IAQ) and the indoor air-related symptoms of hospital personnel. MATERIALS AND METHODS An inspection and evaluation graded on a 1 to 3 scale of the ...