←
equivalence with hash
ideal
•
library
•
elements
• order
collection
→
Order defined by a relation that is transitive, antisymmetric, and total.
concept
order
[contravariant
value
element
]
subtypes
function
[
sign
,
element
,
element
]
←
equivalence with hash
ideal
•
library
•
elements
• order
collection
→