منابع مشابه
TRANSFORMATION SEMIGROUPS AND TRANSFORMED DIMENSIONS
In the transformation semigroup (X, S) we introduce the height of a closed nonempty invariant subset of X, define the transformed dimension of nonempty subset S of X and obtain some results and relations.
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The scale, scope, and significance of humanitarian action have expanded significantly since the late 1980s. This article reflects on two ways in which humanitarianism has been transformed. First, its purpose has been politicized. Whereas once humanitarian actors attempted to insulate themselves from the world of politics, they now work closely with states and attempt to eliminate the root cause...
متن کاملtransformation semigroups and transformed dimensions
in the transformation semigroup (x, s) we introduce the height of a closed nonempty invariant subset of x, define the transformed dimension of nonempty subset s of x and obtain some results and relations.
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ژورنال
عنوان ژورنال: Nature
سال: 1989
ISSN: 0028-0836,1476-4687
DOI: 10.1038/338216a0