In descriptive set theory, a tree on a set X {\displaystyle X} is a collection of finite sequences of elements of X {\displaystyle X} such that every prefix of a sequence in the collection also belongs to the collection.
A mechanical tree shaker is a device that uses a hydraulic cylinder to squeeze a tree. It is used in the harvesting of some fruit trees, especially pecans. Tree shakers...
Tree rearrangements are deterministic algorithms devoted to searching for an optimal tree structure. They can be applied to any set of data that are naturally arranged into a tree, but...
Tree spiking involves hammering a metal rod, nail or other material into a tree trunk, either inserting it at the base of the trunk where a logger might be expected...
In mathematics, real trees are a class of metric spaces generalising simplicial trees. They arise naturally in many mathematical contexts, in particular geometric group theory and probability theory. They are...
This is a family tree of the Thomson family. The Thomsons are Canada's wealthiest family, includes some of Canada's wealthiest individuals, and hold the titles Barons of Fleet in the...
In mathematics, the Double extension set theory is an axiomatic set theory proposed by Andrzej Kisielewicz consisting of two separate membership relations on the universe of sets, denoted here by...
In mathematical logic, positive set theory is the name for a class of alternative set theories in which the axiom of comprehension holds for at least the positive formulas...
Quasi-set theory is a formal mathematical theory for dealing with collections of objects, some of which may be indistinguishable from one another. Quasi-set theory is mainly motivated by the assumption...
