Category:Lower Sections
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This category contains results about Lower Sections.
Definitions specific to this category can be found in Definitions/Lower Sections.
Let $\struct {S, \preceq}$ be an ordered set.
Let $L \subseteq S$.
Definition 1
$L$ is a lower section in $S$ if and only if:
- $\forall l \in L, s \in S: s \preceq l \implies s \in L$
Definition 2
$L$ is a lower section in $S$ if and only if:
- $L^\preceq \subseteq L$
where $L^\preceq$ is the lower closure of $L$.
Definition 3
$L$ is a lower section in $S$ if and only if:
- $L^\preceq = L$
where $L^\preceq$ is the lower closure of $L$.
Subcategories
This category has only the following subcategory.
Pages in category "Lower Sections"
The following 22 pages are in this category, out of 22 total.