Math 2.0

concept

Element

Summary

An element of a set is one of the objects that the set contains. The relation "is an element of" is written with the symbol ∈\in.

What this node needs for W2
  • edge instance_of in: at least two examples (0 of 2)
  • edge not_instance_of in: at least one non-example (0 of 1)
  • edge specializes both: the more general notions and the special cases (0 of 1)

The writing levels say how complete the text of a node is. They do not measure its truth.

Sources

  1. Web https://en.wikipedia.org/wiki/Element_of_a_set, lead section