Continuous extension of maps between sequential cascades

Annals of Pure and Applied Logic 172 (4):102928 (2021)
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Abstract

The contour of a family of filters along a filter is a set-theoretic lower limit. Topologicity and regularity of convergences can be characterized with the aid of the contour operation. Contour inversion is studied, in particular, for iterated contours of sequential cascades. A related problem of continuous extension of maps between maximal elements of sequential cascades to full subcascades is solved in full generality.

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Citations of this work

The rudin–keisler ordering of p-points under ???? = ????Andrzej Starosolski - 2021 - Journal of Symbolic Logic 86 (4):1691-1705.

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References found in this work

Ultrafilters on ω.James E. Baumgartner - 1995 - Journal of Symbolic Logic 60 (2):624-639.
Ultrafilters on $omega$.James E. Baumgartner - 1995 - Journal of Symbolic Logic 60 (2):624-639.
P-hierarchy on β ω.Andrzej Starosolski - 2008 - Journal of Symbolic Logic 73 (4):1202-1214.
A few special ordinal ultrafilters.Claude Laflamme - 1996 - Journal of Symbolic Logic 61 (3):920-927.

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