منابع مشابه
BOOLEAN SUBTRACTΓVΈ ALGEBRAS THOMAS M . HEARNE and
and prove that the study of such structures is equivalent to the study of generalized Boolean algebras. We call such structures Boolean subtractive algebras since they are subtractive algebras in the sense of Crapo and Rota ([1], 3.7). Alternatively, such structures might be called generalized colonies since, as we later prove, every colony is a Boolean subtractive algebra. As an example of a B...
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It is proved that the quasi-proximity space induced by the bicompletion of a quasi-uniform T0-space X is a subspace of the quasi-proximity space induced by the Samuel bicompactification of X. The result is then used to establish that the locally finite covering quasi-uniformity defined on the category Top0 of topological T0-spaces and continuous maps is not lower K-true (in the sense of Brümmer...
متن کاملCognitive hostility and suicide.
OBJECTIVE To determine whether a specific component of hostility (i.e. cognitive or behavioural) may predict suicide in a prospective design, controlling for depressive mood. METHOD In 1993, 14,752 members of the 'GAZ et ELectricité' (GAZEL) cohort (10,819 men, mean age=49.0 years; 3933 women, mean age=46.2 years) completed the Center for Epidemiologic Studies Depression Scale and at least on...
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Subsequent to the demons t ra t ion tha t the major h i s tocompa t ib i l i t y molecu la r complex (MHC) 1 is a necessary de t e rminan t in i m m u n e specific ki l l ing by cytotoxic lymphocytes (CTL) in virus-infected target cells (1), e luc ida t ion of the p h e n o m e n o n of M H C restr ict ion has been sought th rough several different exper imen ta l approaches. O n the basis of d...
متن کاملSamuel Kaski and Jaakko Peltonen
D imensionality reduction is one of the basic operations in the toolbox of data analysts and designers of ma chine learning and pattern recognition systems. Given a large set of measured variables but few observations, an obvious idea is to reduce the degrees of freedom in the measurements by representing them with a smaller set of more “condensed” variables. Another reason for reducing the dim...
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ژورنال
عنوان ژورنال: Polar Record
سال: 1993
ISSN: 0032-2474,1475-3057
DOI: 10.1017/s003224740002386x