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Projective bitopological spaces II.
Published online by Cambridge University Press: 09 April 2009
Extract
Gleason [3] proved that in the category G of compact Hausdorff spaces and continuous maps, the projective objects are precisely the extremally disconnected spaces contained in the category. Strauss [7] generalised this and proved that in the category G of regular Hausdorif spaces and perfect maps the projective objects are again precisely the extremally disconnected ones. Observe that Gleason's category is a full subcategory of Strauss's category.
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- Copyright © Australian Mathematical Society 1972
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