arbitrary-sum
AKA arbitrary-collection.The mereological sum of any two or more endurants (physical or not). Arbitrary sums have no unity criterion (they are 'extensional').
disjointWith
arbitrary-sum
AKA arbitrary-collection.The mereological sum of any two or more endurants (physical or not). Arbitrary sums have no unity criterion (they are 'extensional').
type
comment
AKA arbitrary-collection.The m ...... rion (they are 'extensional').