Category:Definitions/Frames

From ProofWiki
Jump to navigation Jump to search

This category contains definitions related to Frames.
Related results can be found in Category:Frames.


Let $\struct {L, \preceq}$ be a complete lattice.


$\struct {L, \preceq}$ is a frame if and only if $\struct {L, \preceq}$ satisfies the infinite join distributive law:

  \(\ds \forall a \in L, S \subseteq L:\) \(\ds a \wedge \bigvee S = \bigvee \set {a \wedge s : S \in S} \)      

where $\bigvee S$ denotes the supremum $\sup S$.