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- Half-disk_topology abstract "In mathematics, and particularly general topology, the half-disk topology is an example of a topology given to the set X, given by all points (x,y) in the plane such that y ≥ 0. The set X can be termed the closed upper half plane.To give the set X a topology means to say which subsets of X are "open", and to do so in a way that the following axioms are met: The union of open sets is an open set. The finite intersection of open sets is an open set. The set X and the empty set ∅ are open sets.↑ ↑".
- Half-disk_topology wikiPageID "29156736".
- Half-disk_topology wikiPageRevisionID "583655337".
- Half-disk_topology hasPhotoCollection Half-disk_topology.
- Half-disk_topology subject Category:General_topology.
- Half-disk_topology subject Category:Topological_spaces.
- Half-disk_topology type Abstraction100002137.
- Half-disk_topology type Attribute100024264.
- Half-disk_topology type MathematicalSpace108001685.
- Half-disk_topology type Set107999699.
- Half-disk_topology type Space100028651.
- Half-disk_topology type TopologicalSpaces.
- Half-disk_topology comment "In mathematics, and particularly general topology, the half-disk topology is an example of a topology given to the set X, given by all points (x,y) in the plane such that y ≥ 0. The set X can be termed the closed upper half plane.To give the set X a topology means to say which subsets of X are "open", and to do so in a way that the following axioms are met: The union of open sets is an open set. The finite intersection of open sets is an open set. The set X and the empty set ∅ are open sets.↑ ↑".
- Half-disk_topology label "Half-disk topology".
- Half-disk_topology sameAs m.0dlmfxf.
- Half-disk_topology sameAs Q5641600.
- Half-disk_topology sameAs Q5641600.
- Half-disk_topology sameAs Half-disk_topology.
- Half-disk_topology wasDerivedFrom Half-disk_topology?oldid=583655337.
- Half-disk_topology isPrimaryTopicOf Half-disk_topology.