2026-04-05

1705: Universal Net with Directed Index Set

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definition of universal net with directed index set

Topics


About: topological space

The table of contents of this article


Starting Context



Target Context


  • The reader will have a definition of universal net with directed index set.

Orientation


There is a list of definitions discussed so far in this site.

There is a list of propositions discussed so far in this site.


Main Body


1: Structured Description


Here is the rules of Structured Description.

Entities:
\( D\): \(\in \{\text{ the directed sets }\}\)
\( T\): \(\in \{\text{ the topological spaces }\}\)
\(*f\): \(: D \to T\)
//

Conditions:
\(\forall S \subseteq T (f \in \{\text{ the nets eventually in } S\} \lor f \in \{\text{ the nets eventually in } T \setminus S\})\)
//


References


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