“Orderings of filters in terms of reloids” – a formal approach
I updated the draft “Orderings of filters in terms of reloids. Extensions of Rudin-Keisler ordering” at this Web page. In the updated version reloids between different sets (I now call them trans-reloids.) are considered in a formal manner, unlike a somehow informal approach in the previous version of this draft. Instead of proving all properties […]
“Orderings of filters in terms of reloids” – draft updated
I updated the draft “Orderings of filters in terms of reloids. Extensions of Rudin-Keisler ordering” at this Web page. The updated version contains a new theorem (or rather a counter-example) which I proved with the help of Andreas Blass. This version is yet too rough draft and I hope to finish rewriting it in a […]
Orderings of filters in terms of reloids – in terms of category theory
My draft article “Orderings of filters in terms of reloids. Extensions of Rudin-Keisler ordering” is updated. Read here. Now it uses the language of basic category theory. It is yet not carefully checked for errors.
Orderings of filters in terms of reloids – online draft
I put a preliminary draft (not yet checked for errors) of the article “Orderings of filters in terms of reloids” at Algebraic General Topology site. The abstract Orderings of filters which extend Rudin-Keisler preorder of ultrafilters are defined in terms of reloids that (roughly speaking) is filters on sets of binary relations between some sets. […]